UK Welder Salary 2026/27

Overview of UK welder pay

Welding is one of the most pay-stratified trades in the UK skilled-manual sector. The ONS classifies welders under SOC 2020 code 5215 ("Welding trades") with a median full-time gross of around £33,000 to £40,000 in the 2024 ASHE release, but the median heavily understates the trade because it averages a £27,000 site MIG welder against a £90,000 offshore platform pipe welder. The pay structure splits across six distinct work types: general site fabrication (MIG / MAG, the high-volume entry tier), industrial coded work (TIG / MMA on carbon, stainless and aluminium under EN ISO 9606), pipe coding for petrochemical and nuclear (ASME IX 6G), offshore platform work in the North Sea (substantially tax-advantaged via subsistence allowances), nuclear and aerospace exotic-material work, and motorsport / one-off fabrication.

The single biggest pay step in a welder's career is the move from "generally competent" to "coded" - certified under EN ISO 9606 or ASME IX to weld a specific process on a specific material in a specific position, against a pre-qualified Weld Procedure Specification (WPS). A coded TIG welder on carbon or stainless steel earns 20% to 40% more than a competent uncoded welder doing comparable work, and a 6G all-positional pipe welder commands a further 30% to 60% premium on top of that. The reason is structural scarcity: a generally competent welder may take 200 to 400 hours of focused practice to pass a 6G ASME IX pipe coding, and the test failure rate is materially above other skilled-trade certifications. Customers in petrochemical, nuclear, pharmaceutical and aerospace will not accept un-coded welds on safety-critical components because the liability is uninsurable.

Around 35% to 40% of UK welders are self-employed sole traders or run a personal services company, with the share rising sharply as you move up the coding ladder. Offshore platform welders, nuclear coded specialists and senior CSWIP-certified inspectors are predominantly self-employed or Ltd-company contractors on rolling 3 to 12 month placements, where customers prefer to engage a personal services company against an ECITB / NAECI day rate rather than directly employ. General site welders on construction projects are usually sub-contracted via the Construction Industry Scheme (CIS) with 20% labour withholding. The geographic premium is modest for land-based work (London and the South East add 10% to 20%) but irrelevant for offshore - North Sea rotation work is paid at a single national day-rate band plus subsistence allowances regardless of the welder's home location.

Qualifications and coding tests

The standard entry route is the Welder apprenticeship standard, a 2 to 4 year programme run jointly by an employer and a training provider (typically an FE college, ECITB-registered training centre, or large engineering main contractor's in-house training school). The apprentice combines on-site placement with college coursework, sits the City & Guilds 3268 Welding Skills diploma, earns NVQ Level 2 Welding sign-off, and (for those continuing on the Advanced standard) NVQ Level 3 Welding by the end of year three or four. NVQ Level 2 is the industry entry qualification for general site fabrication; NVQ Level 3 is the progression qualification for senior welders and is increasingly expected for those moving into coded specialist work.

Above NVQ Level 2 / 3 the qualifications that drive pay are coding tests rather than further generic qualifications. A coding test certifies the welder to weld a specific process (TIG / MIG / MMA / FCAW under ISO 4063 process numbers 141 / 135 / 111 / 136 respectively), on a specific material (carbon steel grade S355, stainless 316L, aluminium 5083, duplex 22Cr, super-duplex 25Cr, Inconel 625 / 718, titanium grades 2 / 5), in a specific position (1G flat, 2G horizontal, 3G vertical, 4G overhead, 5G horizontal pipe-fixed, 6G all-positional pipe-fixed at 45°), and to a specific thickness range. The test piece is welded to a pre-qualified Weld Procedure Specification (WPS), then independently radiographed or bend-tested under EN ISO 9606 (for structural welding) or ASME IX (for pressure-equipment and pipeline welding).

The 6-month re-validation is a paperwork exercise (the employer or test body confirms the welder has been using the coded process continuously without rejected welds); the full 12 or 24 month re-test requires a fresh test piece and radiograph or bend test. Welders typically hold 3 to 8 active codings simultaneously across material / process / position combinations; senior pipe welders in petrochemical and nuclear can hold 15 to 25 active codings, with the cost of maintenance running £2,000 to £6,000 a year (an allowable business expense for self-employed welders, employer-funded for employed welders).

CSWIP (Certification Scheme for Welding and Inspection Personnel, administered by TWI) is the inspection-side certification ladder: CSWIP 3.0 (Visual Welding Inspector), CSWIP 3.1 (Welding Inspector, the standard ticket for QA inspection roles), CSWIP 3.2 (Senior Welding Inspector, required for offshore and pressure-vessel work) and CSWIP 3.2.1 / 3.2.2 / 3.2.3 specialist endorsements. The CSWIP 3.1 course is typically a 5-day classroom training plus written and practical examination, costing £1,500 to £2,200 with a 1-day re-validation every 5 years. A CSWIP 3.1 Welding Inspector earns £55,000 to £80,000 employed; CSWIP 3.2 Senior Inspectors on offshore contracts can clear £90,000 to £130,000 with subsistence allowances. CSCS card holding is required for construction-site access; ECITB CCNSG Safety Passport is the equivalent for engineering construction sites (petrochemical, nuclear, power generation, pharmaceutical).

Offshore welders additionally need: BOSIET (Basic Offshore Safety Induction & Emergency Training) - a 3-day course including helicopter underwater escape training, costing around £900 to £1,200; FOET (Further Offshore Emergency Training) - the 1-day, 4-yearly refresher costing £350 to £500; and a valid OGUK / Offshore Medical (Oil & Gas UK fitness assessment, around £150 to £250, valid 2 years). Self-employed offshore welders absorb these costs as allowable training expenses; employed offshore welders generally have them paid by the main contractor with a retention clause.

Employee pay grades

Employed welder pay splits regional and London columns, with the major pay step at NVQ Level 2 to coded welder (the move from general MIG / MAG site fabrication into TIG / MMA coded work under EN ISO 9606 or ASME IX), and a further step at coded welder to 6G pipe welder. Figures below are typical 2025/26 market data from recruiter postings, the ECITB NAECI craft pay reference, and the latest ONS ASHE SOC 5215 release; individual employers vary by £3,000 to £6,000 either side depending on whether the role is mostly general fabrication, mostly coded petrochemical or pipeline, or in the offshore / nuclear / aerospace premium niches.

Source: ECITB NAECI craft pay reference, TWI coding test framework, CSWIP inspector ticket structure, cross-referenced with ONS ASHE 2024 SOC 5215 and industry recruiter postings. Retrieved 2026-06-04.

Self-employed day rates and offshore premium

Self-employed day rates dominate once a welder has coded under EN ISO 9606 or ASME IX and either runs a steady book of industrial / petrochemical sub-contract work or breaks into the offshore / nuclear / aerospace contractor pool. The bands below are gross billings per day (labour, before consumables mark-up where applicable); typical chargeable days per year run 200 to 220 for land-based work and 150 to 180 for offshore work (the offshore rota delivers fewer billed days but a much higher day-rate to compensate).

Worked example: a self-employed coded pipe welder charging £400 a day x 200 chargeable days = £80,000 gross revenue. Subtract roughly £5,000 of allowable expenses (van, fuel, consumables, coding maintenance, PPE renewals, CSWIP refresher, accountant, TWI / NAECI subscription) and you land on around £75,000 of taxable profit - the figure used in the take-home matrix below. An offshore platform welder on £550 a day x 165 offshore rotation days = £90,750 gross labour, plus around £150 a day of tax-free subsistence and travel allowance over the same 165 days = £24,750 of tax-free income, for a combined gross of £115,500 of which £24,750 sits outside the taxable base under HMRC EIM71307.

Day-rate ranges cross-referenced with Offshore Energies UK contractor pay data, ECITB NAECI craft rates, and industry contractor agency postings (Petroplan, Air Energi, Brunel Energy). Offshore rates assume a standard 2-on / 2-off or 2-on / 3-off rotation. Self-reported rates skew slightly high; use ranges as a guide rather than a quoting baseline. Retrieved 2026-06-04.

Take-home: six worked scenarios

Computed from our HMRC-verified salary and self-employed engines. All figures use 2026/27 England tax bands. PAYE rows above apprentice level assume 5% workplace pension via salary sacrifice; self-employed rows use Class 4 National Insurance (mandatory Class 2 abolished from 2024/25). Limited-company row applies Corporation Tax at company level (not shown) before the dividend split. The £110k offshore row models the 60% PA-taper effect on the taxable employment-income leg only; tax-free subsistence allowances under HMRC EIM71307 sit outside this gross.

The £52k coded welder London row sits right at the £50,270 higher-rate threshold once the 5% pension salary sacrifice is applied - this is the high-leverage point in the welder pay curve where pension sacrifice keeps every taxable pound at the 20% basic rate rather than 40%. A 5% pension salary-sacrifice contribution there saves both the 40% Income Tax and the 2% employee NI on the sacrificed amount - a 42% effective relief - which is why sacrifice is the highest-leverage tax move at this earning level.

The £110k offshore platform row is structurally different: every taxable pound between £100,000 and £125,140 is taxed at the 60% effective marginal rate (40% Income Tax + 20% Personal Allowance withdrawal) plus 2% employee NI. On £110,000 of taxable employment income that adds £2,700 of "extra" Income Tax above the headline 40% rate. A £10,000 pension salary sacrifice on the £100k overshoot reclaims £6,200 of that taper - by far the highest single tax-saving move available to an offshore welder.

The Ltd co director row is structurally different again: gross £80,000 splits £35,000 salary + £45,000 dividends. The salary leg pays Income Tax of £4,486 and employee NI of £1,794; the dividend leg pays £11,201 of dividend tax (£15,270 at 8.75% + £29,230 at 33.75%). Total personal tax: £17,482 on £80,000 of pre-tax personal income, or 21.9% effective. Compare against the £75,000 sole trader scenario where roughly comparable profit takes home £54,811 - the Ltd structure saves around £7,707 (before subtracting Corporation Tax of roughly 19% to 25% on the company profit, which the dividend payment presupposes has already been paid).

CIS for construction welding sub-contractors

The Construction Industry Scheme (CIS) is HMRC's mandatory withholding regime for payments from contractors to sub-contractors in the construction sector. For a self-employed welder, CIS applies to the construction-site portion of the work: structural steel erection on commercial and high-rise buildings, mechanical & electrical (M&E) installation, bridge and tunnel work, refurbishment projects, site fabrication for new-build. It does not apply to industrial fabrication shops (factory-floor welding for a manufacturer is normal direct invoice or PAYE), offshore platform work (offshore sits outside the construction sector for CIS purposes - it is governed by the engineering construction industry framework), or motorsport and aerospace fabrication.

When CIS applies, the contractor deducts a flat percentage of the labour element of your invoice at source and pays it to HMRC against your tax bill. The standard rate is 20% if you are CIS-registered as a sub-contractor; the higher rate is 30% if you have not registered. Consumables (welding wire, electrodes, shielding gas, grinding discs) and equipment hire are not subject to the deduction. You reclaim the deductions via your annual Self Assessment return: HMRC offsets the deductions against your Income Tax and Class 4 NIC for the year, and refunds any overpayment.

Worked example: a CIS-registered welder invoices a structural steel contractor £3,800 for a week's site work (£3,200 labour + £600 consumables and gas). The contractor deducts 20% of £3,200 = £640, pays £3,160 to the welder, and pays £640 to HMRC. At year-end the welder's Self Assessment shows £3,200 of CIS-deducted income and £640 of CIS deductions; if total Income Tax + Class 4 NIC due is £15,500, the welder pays £15,500 - £640 = £14,860 in cash. The 20% / 30% withholding is conceptually similar to PAYE but on labour only and reconciled annually rather than monthly.

Gross Payment Status (GPS) is available to established sub-contractors who pass HMRC's turnover, compliance and bank-account tests: with GPS, contractors pay you in full and you settle your own tax via Self Assessment. GPS is worth applying for once your annual sub-contractor turnover exceeds £30,000 (the minimum threshold) and your tax record is clean - the cashflow improvement of receiving labour in full rather than 80% is meaningful for a coded welder running £60k to £100k of annual CIS billings.

Use the CIS calculator to model the 20% / 30% deduction on a specific labour invoice and project the year-end Self Assessment reclaim.

Offshore subsistence and North Sea allowances

Offshore platform work is structurally different from land-based welding in two ways: the rotation pattern (typically 2 weeks on / 2 or 3 weeks off, with 150 to 180 offshore days per year) and the tax treatment of subsistence and travel allowances. HMRC's Employment Income Manual at EIM71307 ("Offshore Allowance") and the related EIM scale rates allow main contractors to pay offshore workers tax-free subsistence allowances reflecting the additional cost of living and working at a remote offshore location, on top of the taxable day rate.

The typical structure for an offshore platform welder pay packet has three components. First, the taxable day rate: £400 to £700 per rotation day, taxed through PAYE if the welder is employed by the main contractor or through Self Assessment if engaged via personal services company. Second, tax-free subsistence allowance: £100 to £200 per offshore day, paid for the additional cost of meals, laundry, communications and incidental expenses incurred while working offshore. Third, travel allowance: tax-free reimbursement of helicopter / fixed-wing transfer to and from the platform, mobilisation and demobilisation travel between the welder's home and the heliport.

The combined effect: an offshore welder on £550 / day x 165 days = £90,750 taxable, plus £150 / day x 165 days = £24,750 tax-free subsistence, plus around £3,000 to £5,000 of travel allowance, has roughly £30,000 of tax-free income on top of a £90,750 taxable base. Crucially, the tax-free portion does NOT count toward "adjusted net income" for the £100,000 Personal Allowance taper, the £60,000 / £80,000 High Income Child Benefit Charge thresholds, the £29,385 Plan 2 student loan repayment threshold, or the £60,000 annual pension allowance taper - so an offshore welder with £120,000 of headline gross may sit comfortably below all of those traps once allowances are stripped out. Careful payroll structuring around this gap is the biggest single tax-planning lever for offshore workers.

The arrangement is contingent on the allowances being genuine reimbursements of additional cost incurred, paid in accordance with the EIM scale rates or with documented actual expenditure, and the welder being on a contractual offshore rota (not a one-off visit). HMRC has tightened the documentation requirements significantly since 2018; main contractors operating offshore (BP, Shell, Equinor, Harbour Energy, Repsol Sinopec, TotalEnergies) typically run dedicated payroll teams to ensure the EIM71307 treatment holds up under enquiry. Self-employed offshore welders engaging via personal services company need their accountant to model the allowances separately from the headline day rate and document each scale-rate component on a per-rotation basis.

Note: the "North Sea allowance" terminology dates back to the older Petroleum Industry Allowance regime; current HMRC practice references the general EIM71307 offshore allowance framework plus the customary scale rates published by Offshore Energies UK and used as the industry baseline. The 2017 onshore "Foreign Earnings Deduction" and offshore "Seafarers' Earnings Deduction" rules are separate regimes and do not apply to UK Continental Shelf offshore welders working on installations within UK territorial waters (they apply only to qualifying seafarers and certain qualifying foreign deployments).

Expenses and capital allowances on welding kit

For a self-employed welder, expense management splits across three categories: revenue (immediately deducted), capital (deducted via Annual Investment Allowance), and use-of-home / vehicle (proportional). Welding is equipment-heavy compared to most other trades - a good TIG / MIG / MMA rig runs £1,500 to £6,000, consumables run 15% to 25% of invoice value, and coding maintenance is a recurring annual cost - so accurate capital allowance accounting matters more than it does for joinery or plumbing.

Revenue expenses (immediately deductible)

• Consumables: welding wire (MIG / MAG / FCAW), TIG tungstens and filler rod, MMA electrodes (E6013 / E7018), shielding gas (argon, argon / CO2 mix, helium for aluminium), grinding discs, flap wheels, wire brushes, anti-spatter spray, weld cleaner solutions - all cost-of-sales, deducted in the period they are used on a job.
• Hand tools and consumables under £200: chipping hammers, wire brushes, slag picks, files, clamps, magnetic squares, weld gauges, small grinders (revenue, immediate deduction).
• PPE and protective clothing: auto-darkening welding helmets, leather welding jackets, leather gauntlets (TIG and MIG / MMA variants), fire-retardant overalls, safety boots, hearing protection, respirator with welding fume filters, dust masks, leather welding aprons - branded / business-purpose deductible in full.
• Van running costs: fuel, insurance, MOT, repairs, breakdown cover. Alternatively, claim HMRC's simplified mileage rate of 45p per mile for the first 10,000 miles, 25p thereafter.
• Coding test fees: EN ISO 9606 and ASME IX coding tests (£200 to £1,200 per test, see coding table above), 6-month re-validations (£100 to £250 per code), CSWIP renewals and refreshers. Allowable as training expenses that maintain existing professional standing.
• Offshore training renewals: BOSIET initial (£900 to £1,200) and FOET 4-yearly refresher (£350 to £500), OGUK Offshore Medical (£150 to £250 every 2 years). All allowable where the welder is in active offshore work.
• Insurance: public liability (£5m to £10m cover typical for industrial welding contracts), tools insurance, professional indemnity for designed-and-installed pressure work.
• Trade body fees: TWI Professional Membership, IEng / EngTech / IIWE professional registration where held, ECITB / NAECI baseline scheme administration fees.
• Mobile phone and internet: business proportion of bills - typically 60% to 80% if no separate personal contract.
• Accountancy fees: sole-trader Self Assessment preparation £400 to £900 a year; Ltd company accounts and Director's Self Assessment £900 to £1,800.

Capital expenses (Annual Investment Allowance)

The Annual Investment Allowance (AIA) allows 100% deduction in year one of qualifying plant and machinery up to a £1m annual limit. For a welder the AIA is most useful for:

• Welding rigs: a quality inverter MIG / MAG set (£1,200 to £3,000), pulse TIG inverter (£1,500 to £4,500), engine-driven MMA / TIG generator for site work without mains (£3,000 to £8,000), multi-process synergic platform (£3,500 to £9,000) - all AIA-eligible at 100% in year one.
• Vans: a £25,000 transit van bought in year one writes off £25,000 against profits via AIA - saving £5,000 (20% rate) to £10,000 (40% rate) in Income Tax plus a further £1,200 to £2,000 in Class 4 NIC. Electric vans qualify for 100% First-Year Allowance and avoid the company-van Benefit in Kind for personal use.
• Engine-driven welding generator: Lincoln Vantage / Miller Bobcat / Hobart EnPak engine-driven welder-generators (£4,000 to £12,000 new) typical for site and pipeline work without mains power. Fully AIA-eligible.
• Plasma cutter and band-saw: Hypertherm or similar plasma cutter (£1,500 to £5,000), horizontal band-saw (£800 to £3,000) - capital plant.
• Fume extraction: portable fume extractor with HEPA filtration (£1,500 to £4,000) - required for indoor welding under COSHH 2002 and now increasingly enforced after the 2019 reclassification of mild steel welding fume as a Group 1 carcinogen. AIA-eligible.
• Pipe positioner / rotator: motorised pipe positioner / turn-roll (£2,500 to £15,000) - capital plant. Standard for pipe welder shops doing roll welding on 4" to 12" line pipe.
• Workshop kit: welding bench, weld backing fixtures, purge dam kit for stainless TIG, cylinder bottle trolley, drying oven for low-hydrogen MMA electrodes - all AIA-eligible above the £200 per-unit threshold.

On disposal (selling the rig or trading in old kit), the disposal proceeds are added back to profits as a balancing charge in that year. For a senior coded welder running a Ltd company, the AIA on a fresh rig + van + fume extractor purchase can take £40,000 to £70,000 of qualifying capex straight off the year one profit - meaningful when sized against a £60k to £90k profit baseline.

Mileage tax relief calculator for the 45p / 25p simplified method, or capital allowances calculator to model AIA on a van, rig or fume extraction purchase.

Use of home as office

Two methods: HMRC's simplified flat rate of £26 a month for 101+ hours of monthly use (no calculation needed), or a proportion of actual bills (council tax, utilities, internet, rent / mortgage interest) based on the number of rooms used for business and the hours used. Self-employed welders with a small home-workshop or garage doing finish work, weld procedure documentation and quoting typically claim the simplified rate; those running a dedicated home workshop space for repeat sub-contract fabrication may pencil out higher under the actual-bills method.

Career progression: worked example

A typical UK welder's career runs: apprentice year one (age 16 to 18), NVQ Level 2 Welding sign-off and newly-qualified general welder (year 2 to 4), first coded ticket in TIG or MMA on carbon / stainless steel plate (year 4 to 6), 6G all-positional pipe coding under ASME IX (year 6 to 10), then a choice point - stay employed at £55,000 to £75,000 as a Foreman or CSWIP 3.1 / 3.2 Inspector, go self-employed at £65,000 to £105,000+ profit as a coded specialist, break into the offshore platform contractor pool, or move into nuclear / aerospace exotic-material work. The offshore and nuclear specialist progressions add a further premium that compounds on top of the general coded welder day rate.

The apprentice-to-NVQ-Level-2 step roughly 2.5x's take-home (PA is consumed for the first time, but the gross more than doubles). The NVQ-L2-to-coded-welder step adds £12,996 of take-home for £19,000 of additional gross - this is the highest-leverage promotion in the welder pay curve, because the coding skill is genuinely scarce and the customer base shifts from general contractors to industrial primes. The coded-to-self-employed-pipe step adds another £15,724 on £23,000 of additional profit - the headline driver here is no employee NI and full control over expenses against profits. The offshore platform step is the biggest single jump on headline gross (£35,000 extra) but the 60% PA-taper means net take-home only rises by £15,456 - this is why offshore welders rely heavily on the tax-free subsistence allowances that sit outside this taxable gross. The Ltd structure adds another £7,707 of after-tax personal take-home at the £80k pre-tax level (vs the £75k sole trader), with the gap widening sharply above £100k.

Comparison vs other trades and professions

Welding pay sits in the upper band of UK construction and engineering trades once you factor in the coding premium and the offshore / nuclear / aerospace specialist niches. The headline NVQ Level 2 welder at £27,000 to £35,000 is broadly comparable to a general site bricklayer or non-Gas-Safe plumber, but the upper end of the trade (offshore platform welder, nuclear coded specialist, CSWIP 3.2 Senior Inspector) clears £90,000 to £140,000+, well above the upper-quartile in any other construction or skilled-manual trade except possibly Gas Safe boiler installers in central London or commercial heritage stonemasonry crossover specialists.

• vs Bricklayer: NVQ Level 2 welders at £27,000 to £35,000 regional sit slightly below NVQ Level 2 bricklayers at £30,000 to £37,000 - the bricklayer entry advantage tracks the more directly transferable skill set on new-build housing. But the coded welder ceiling (£55,000 to £90,000 employed, £105,000+ self-employed pipe specialist) substantially exceeds the bricklayer ceiling (£52,000 to £75,000 employed, £85,000+ heritage specialist). The offshore welder route is unique to welding and has no bricklayer equivalent.
• vs Plumber: NVQ Level 2 welders at £27,000 to £35,000 sit slightly above non-Gas-Safe plumbers at £25,000 to £32,000, but below Gas Safe plumbers at £40,000 to £50,000. Coded welders comfortably outpace Gas Safe plumbers at £35,000 to £48,000 employed, with the gap widening sharply for pipe welders and offshore specialists. The plumber Gas Safe / commercial boiler installer route is comparable in pay structure to the welder coding route - both are time-limited certifications that lift the upper quartile substantially.
• vs Electrician: JIB Approved Electricians at £50,000 to £56,000 regional broadly match coded welders at £35,000 to £48,000 regional / £42,000 to £55,000 London. Above the coding tier, welders extend further - pipe welders at £47,000 to £78,000 and offshore platform welders at £80,000 to £140,000+ outpace senior electricians outside the EV chargepoint / solar PV niches. The electrician pay structure is more uniform via the JIB national agreement; the welder pay structure is more bimodal between general site work and coded specialist work.
• vs Civil Service AO (entry-level): Civil Service AO grade starts at around £24,000 to £27,000 outside London / £27,000 to £30,000 London. An NVQ Level 2 welder outearns AO by £3,000 to £10,000 and a coded welder outearns AO by £11,000 to £25,000. Public-sector benefit is the alpha pension (4.6% to 8.05% employee + 28% employer); private-sector welders rely on workplace pensions (auto-enrolment minimum 8% combined) or sole-trader SIPPs. The offshore welder route obviously outpaces every Civil Service grade below SCS.
• vs Carpenter: NVQ Level 2 welders at £27,000 to £35,000 sit slightly below NVQ Level 2 carpenters at £33,000 to £43,000 - the carpenter advantage tracks higher ASHE SOC 5315 median and broader employer base. But coded welders (£35,000 to £55,000) overtake carpenters at the same career stage, and the offshore / nuclear premium is unique to welding.

• All UK professions - browse the full directory.
• UK bricklayer pay - NVQ Level 2 / 3 Trowel Occupations, heritage / conservation day rates and piecework brick pricing.
• UK plumber pay - Gas Safe specialist day rates and apprentice progression.
• UK electrician pay - JIB grades, EV chargepoint and solar PV specialist day rates.
• UK carpenter pay - NVQ Level 2 / 3 site carpenter, bench joiner and cabinet maker day rates.
• UK Civil Service pay - AO to SCS grade ladder.
• CIS calculator - sub-contractor deduction modelling.
• Self-employed calculator - Class 4 NIC + Self Assessment take-home.
• Dividend tax calculator - Ltd company extraction modelling.

Frequently asked questions

How much does a UK welder earn in 2026/27?

An employed NVQ Level 2 general welder (MIG / MAG) earns around £27,000 to £35,000 a year outside London and £33,000 to £42,000 in London on hourly rates of £14 to £18. A coded welder (TIG / MMA on carbon, stainless or aluminium) sits at £35,000 to £48,000 regional / £42,000 to £55,000 London. Pipe welders with 6G ASME IX coding earn £47,000 to £78,000; senior coded specialists in Inconel, duplex or nuclear work clear £55,000 to £90,000. Foremen and CSWIP 3.1 / 3.2 Welding Inspectors earn £55,000 to £90,000. Offshore platform welders gross £80,000 to £140,000+ once tax-free subsistence allowances are included.

What qualifications do I need to work as a welder in the UK?

The standard route is NVQ Level 2 Welding (or NVQ Level 3 for senior work) and City & Guilds 3268 Welding Skills, typically achieved through a 2 to 4 year apprenticeship. Above NVQ Level 2 the pay-driving qualification is process- and material-specific coding under EN ISO 9606 (structural) or ASME IX (pressure-equipment / pipeline), invigilated by an independent body such as TWI, Lloyds Register or Bureau Veritas. A CSCS card is required for almost all commercial construction sites. CSWIP 3.1 (Welding Inspector) is the entry inspection ticket; CSWIP 3.2 (Senior Welding Inspector) is required for offshore and pressure-vessel inspection. Offshore work also requires BOSIET / FOET survival training and a valid Offshore Medical (OGUK / Oil & Gas UK fitness certificate).

What is a coded welder and why is the pay higher?

A coded welder is certified to weld a specific process (TIG / MIG / MMA / FCAW) on a specific material (carbon steel / stainless / aluminium / Inconel / duplex) in a specific position (1G flat through 6G all-positional pipe), under a Weld Procedure Specification (WPS) that has been pre-qualified by destructive testing. The certification is per-combination, time-limited, and re-tested every 6 to 12 months by an independent test body. Coding test pieces are radiographed or bend-tested under EN ISO 9606 or ASME IX. The premium reflects scarcity: a generally competent welder may take 200 to 400 hours of practice to pass a 6G ASME IX pipe coding, and customers in petrochemical, nuclear and aerospace will not accept un-coded welds because the safety-critical liability is uninsurable.

How much does coding test certification cost?

Coding tests run £200 to £1,200 per test depending on process, material, position and the test body. A TIG carbon steel plate coding under EN ISO 9606-1 typically costs £250 to £400; a TIG stainless steel pipe coding at 6G all-positional under ASME IX costs £400 to £700. Exotic materials (duplex, super-duplex, Inconel 625 / 718) run £500 to £1,200 per test and are usually customer-locked (the certificate is only valid for the customer whose WPS was used). Self-employed welders absorb the cost as an allowable training expense; employed coded welders generally have it paid by the employer with a retention clause (often 12 to 18 months of continued employment after the test). Re-validation tests at the 6-month point are cheaper (£100 to £250) than full re-tests at 12 to 24 months.

How much does an offshore platform welder earn?

Offshore platform welders in the North Sea typically earn £400 to £700 per rotation day plus tax-free subsistence allowances of £100 to £200 per day. A typical 2-on / 2-off or 2-on / 3-off rota delivers 150 to 180 offshore days per year, gross billings of £80,000 to £140,000+ before the allowances are layered on. Subsistence and travel allowances paid in accordance with the HMRC Offshore Allowance regime (EIM71307) and the customary scale rates can be paid tax-free, meaning the headline "day rate plus £150 / day allowance" figure can translate to a higher effective take-home than a comparable land-based gross salary. Offshore work requires a valid Offshore Medical (OGUK) and BOSIET / FOET helicopter underwater escape and survival training, with refresher every 4 years.

How is the £100k offshore welder taxed under the 60% trap?

A welder with £110,000 of taxable employment income sits inside the Personal Allowance taper: the £12,570 Personal Allowance is reduced by £1 for every £2 of adjusted net income above £100,000, fully phased out by £125,140. In that £25,140 band the effective marginal rate is roughly 60% (40% Income Tax + 20% PA withdrawal) plus 2% employee NI. A 5% workplace pension salary sacrifice on the £10,000 above the £100k threshold reclaims both the 40% tax and the 20% PA - saving £6,200 on the £10,000 sacrificed. Tax-free offshore subsistence allowances under EIM71307 sit OUTSIDE adjusted net income, so they do not push you into the taper - this is why offshore welders often have very different "headline gross" and "adjusted net income" figures and need careful tax planning around the £100k threshold.

Does CIS apply to welders?

CIS applies to welders working as sub-contractors on construction sites: structural steel erection, site fabrication, mechanical & electrical installation, bridge and tunnel work, refurbishment projects where the welder is a labour-only sub-contractor to the principal contractor. The contractor deducts 20% of your labour at source (30% if you are not CIS-registered) and pays it to HMRC; you reclaim it via Self Assessment. CIS does not apply to industrial fabrication shops (factory-floor welding for a manufacturer is normal employment or direct invoice), offshore platform work (offshore is outside the construction sector for CIS purposes - it is governed by the engineering construction industry framework), or motorsport / aerospace fabrication. Pipe welders working on petrochemical shutdowns are usually inside CIS where the work is on a construction site, outside it where the work is on an operational plant.

Should I go limited company or stay sole trader as a welder?

Limited company becomes tax-efficient above roughly £50,000 of annual profit. The director takes a £12,570 salary (uses Personal Allowance, no NI), the company pays Corporation Tax at 19% to 25% on the rest, and the remainder is paid as dividends taxed at 8.75% / 33.75% with a £500 dividend allowance. The structure works particularly well for senior coded specialists on rolling 3 to 12 month contracts in nuclear, aerospace and petrochemical where customers prefer to engage a personal services company rather than a sole trader. A director on £35,000 salary + £45,000 dividends takes home around 10% to 15% more than a sole trader on £80,000 profit once you net off Corporation Tax, but you incur accountancy fees of £900 to £1,800 a year and run more admin. General site welders on smaller £40k to £55k profit books usually stay sole trader. Inside IR35 placements should usually be umbrella, not Ltd.

What expenses can a self-employed welder deduct?

Allowable expenses include van running costs (fuel, insurance, MOT, repairs - or HMRC mileage at 45p per mile for first 10,000), welding rigs and powered equipment (capital - Annual Investment Allowance), consumables (electrodes, wire, gas, tungstens, grinding discs - cost of sales), PPE and workwear (welding helmets, leather gauntlets, fire-retardant overalls, boots), coding test fees (training expense - £200 to £1,200 per test), CSWIP / NDT training, BOSIET / FOET offshore survival training renewals, OGUK Offshore Medical fees, mobile phone (business proportion), public liability insurance, accountancy fees, trade body fees (TWI Professional Member or Engineering Technician registration). A new welding rig (£1,500 to £6,000 for a quality inverter or pulse TIG / MIG set) is immediately AIA-deductible at 100% in year one.

How does VAT work for self-employed welders?

You must register for VAT once your rolling 12-month turnover exceeds the £90,000 threshold. Once registered, you charge 20% VAT on labour and materials. The Domestic Reverse Charge for construction services (effective March 2021) shifts the VAT accounting on most B2B construction sub-contract work to the customer rather than the supplier - your invoices to main contractors should be marked accordingly. For industrial fabrication, aerospace and motorsport B2B work, standard VAT applies and the customer reclaims input VAT, so registration is largely neutral. Coded pipe specialists in petrochemical and nuclear nearly always pass the £90k threshold within their first 18 months of self-employment due to the day-rate level; offshore welders almost always pass it given the gross billings level. The Flat Rate Scheme rarely benefits welders because consumables and equipment input VAT is meaningful.

What about ECITB-recognised pay scales in oil & gas?

The Engineering Construction Industry Training Board (ECITB) publishes craft pay grade reference rates used as a baseline by main contractors in petrochemical, nuclear, power generation, pharmaceutical and offshore engineering construction. The ECITB National Agreement (the NAECI agreement) covers around 35,000 craft and supervisory workers across the engineering construction sector and includes welder grades, hourly rates, travel and subsistence scale rates, and overtime premiums. Most offshore platform contracts reference NAECI rates plus contractor uplift; most large land-based shutdowns (LNG terminals, refineries, nuclear new-build) also reference NAECI. Self-employed welders bidding into these markets quote against the NAECI rate plus a margin; employed welders within main contractors are paid against NAECI directly. The NAECI agreement is renegotiated every 1 to 2 years and the rates are published on the ECITB website.

Sources

• TWI - The Welding Institute (coding test framework, EN ISO 9606 / ASME IX administration) Retrieved 2026-06-04
• CSWIP - Certification Scheme for Welding and Inspection Personnel (3.0 / 3.1 / 3.2 Welding Inspector grades) Retrieved 2026-06-04
• ECITB - Engineering Construction Industry Training Board (NAECI craft pay reference) Retrieved 2026-06-04
• Offshore Energies UK - North Sea contractor pay and subsistence allowance reference Retrieved 2026-06-04
• CITB - Construction Industry Training Board (apprenticeship, CSCS card administration) Retrieved 2026-06-04
• CSCS - Construction Skills Certification Scheme (mandatory card for commercial site access) Retrieved 2026-06-04
• ONS - Annual Survey of Hours and Earnings (ASHE) 2024, SOC 5215 Welding trades Retrieved 2026-06-04
• HMRC - What is the Construction Industry Scheme (CIS) Retrieved 2026-06-04
• HMRC CIS340 - Construction Industry Scheme: guide for contractors and sub-contractors Retrieved 2026-06-04
• HMRC EIM71307 - Offshore allowance (tax treatment of North Sea subsistence) Retrieved 2026-06-04
• HMRC - Capital allowances and AIA Retrieved 2026-06-04
• HMRC - Expenses if you are self-employed Retrieved 2026-06-04
• HMRC - Rates and thresholds for employers 2026/27 Retrieved 2026-06-04
• Our full methodology & calculation sources →