How is the Band I bill in Rhondda Cynon Taf calculated?

The Band D rate published by Rhondda Cynon Taf for 2026/27 is £2,289 inclusive of every precept on the bill (billing authority, county or upper-tier in two-tier areas, police, fire, and parish where applicable). Band I is fixed at 21/9 of Band D under the Local Government Finance Act 1992, so the Band I annual bill is £2,289 multiplied by 2.333 which gives £5,341 before any discounts.

Can I get the 25% Single Person Discount?

Yes, if you are the only adult living at the property as your sole or main residence. The discount cuts the gross bill by 25%, so a Band I household in Rhondda Cynon Taf would pay £4,006 per year instead of £5,341. You have to apply to Rhondda Cynon Taf for it. If you get a discount by mistake you must tell the council, which can ask you to pay it back and charge a penalty: section 14 and Schedule 3 of the Local Government Finance Act 1992 provide for civil penalties.

What if everyone in the property is a full-time student?

An all-student household is 100% exempt from Council Tax, so the annual bill drops to £0. To count as full-time the course must last at least 1 year and involve at least 21 hours of study a week; for a course up to A level taken by someone under 20, at least 3 months and 12 hours a week. If a student lives with one non-student adult, the non-student gets the 25% Single Person Discount instead of full exemption.

Can I pay over 12 months instead of 10?

The bill is usually split into 10 monthly payments, and you can ask Rhondda Cynon Taf to spread it over 12 instead. For Band I the 10-instalment figure is £534 a month and the 12-instalment figure is £445 a month, before any discounts. The annual total is unchanged. If you are struggling to pay, contact the council straight away rather than missing an instalment.

Council Tax Band I in Rhondda Cynon Taf: 2026/27 Annual Bill

A Band I property in Rhondda Cynon Taf (Wales) pays £5,341 per year in Council Tax before any discount, based on the 2026/27 Band D rate of £2,289 inclusive of all precepts. Band I is fixed at 21/9 of Band D (233.3% of the local Band D rate) by statute, so the multiplier is the same in every billing authority in Wales.

Annual bill

£5,341

Before any discount

Monthly (10 instalments)

£534

April to January, default schedule

Monthly (12 instalments)

£445

Available on request

Discount scenarios for Band I in Rhondda Cynon Taf

How the £5,341 gross bill changes under the most common UK Council Tax reliefs. The disabled banded-down figure applies under the Disabled Band Reduction Scheme when the property has been adapted for a disabled occupant - the bill is charged as if the property were one band lower.

Scenario	Annual bill	Monthly (10)	Saving vs gross
Gross bill (2+ adults, no discount)	£5,341	£534	£0
After 25% Single Person Discount	£4,006	£401	£1,335
Disabled Band Reduction (banded down)	£4,578	£458	£763
100% all-student exemption	£0	£0	£5,341

Need a different scenario (severely mentally impaired disregard, Council Tax Reduction, or a mixed-adult household)? The main Council Tax calculator lets you model any combination.

Band I compared with nearby authorities

Same band, four closest Welsh authorities by Band D rate. Useful when comparing offers across council boundaries (the same band can vary by hundreds of pounds depending on the billing authority and its precepts).

Local authority	Band D (LA)	Band I annual	Difference vs Rhondda Cynon Taf
Rhondda Cynon Taf (this page)	£2,289	£5,341	-
Wrexham	£2,309	£5,388	+£47
Swansea	£2,238	£5,222	-£119
Carmarthenshire	£2,351	£5,486	+£145
Flintshire	£2,376	£5,544	+£203

All bands in Rhondda Cynon Taf

Statutory band ratios applied to Rhondda Cynon Taf's published 2026/27 Band D rate of £2,289. If your property is on a different band than I, jump straight to the right row below.

Band	Ratio	Annual	Monthly (10)	Monthly (12)
Band A	6/9	£1,526	£153	£127
Band B	7/9	£1,780	£178	£148
Band C	8/9	£2,035	£203	£170
Band D	9/9	£2,289	£229	£191
Band E	11/9	£2,798	£280	£233
Band F	13/9	£3,306	£331	£276
Band G	15/9	£3,815	£382	£318
Band H	18/9	£4,578	£458	£382
Band I (this page)	21/9	£5,341	£534	£445

How Rhondda Cynon Taf sets the Band D rate

Council Tax is a property tax administered by your billing authority. Rhondda Cynon Taf's published Band D figure for 2026/27 (£2,289) is the sum of every precept that appears on a resident's bill: the billing authority's own charge, the police and crime commissioner precept, fire and rescue, and any parish or town council precept that applies. Every band is a fixed statutory proportion of Band D. England and Wales set these in ninths: Band A is 6/9 of Band D, Band B is 7/9, Band C is 8/9, Band D is 9/9, Band E is 11/9, Band F is 13/9, Band G is 15/9, Band H is 18/9, and Band I in Wales is 21/9.

The valuation date is 1 April 2003 (Wales rebanded in 2003 and added Band I for the most valuable properties). New builds are slotted into a band by analogy with comparable older stock. The Valuation Office Agency (VOA) handles banding decisions and band challenges.

The 2026/27 published Band D figures are typically confirmed by individual billing authorities in February or March, before the billing year starts on 1 April. This page uses the latest confirmed published rate (2026/27) so the underlying provenance is auditable.

The English council tax referendum limits do not apply in Wales: the referendum rules in Chapter 4ZA of the Local Government Finance Act 1992 cover only authorities in England (s.52ZA, checked 2026-10-20). In Wales the Welsh Ministers have a different power: if they consider an authority's budget requirement for the year excessive, judged against principles they determine, they may designate or nominate the authority (Local Government Finance Act 1992 s.52B, checked 2026-10-20).

Cite or embed - free under CC BY 4.0

Full Council Tax calculator - change LA, band, household, and discounts.
Band I across the UK - top 20 authorities at Band I.
LTT (Wales) - Land Transaction Tax on property purchase.
Mortgage affordability - factor Council Tax into housing cost.

Frequently asked questions

How is the Band I bill in Rhondda Cynon Taf calculated?: The Band D rate published by Rhondda Cynon Taf for 2026/27 is £2,289 inclusive of every precept on the bill (billing authority, county or upper-tier in two-tier areas, police, fire, and parish where applicable). Band I is fixed at 21/9 of Band D under the Local Government Finance Act 1992, so the Band I annual bill is £2,289 multiplied by 2.333 which gives £5,341 before any discounts.
Can I get the 25% Single Person Discount?: Yes, if you are the only adult living at the property as your sole or main residence. The discount cuts the gross bill by 25%, so a Band I household in Rhondda Cynon Taf would pay £4,006 per year instead of £5,341. You have to apply to Rhondda Cynon Taf for it. If you get a discount by mistake you must tell the council, which can ask you to pay it back and charge a penalty: section 14 and Schedule 3 of the Local Government Finance Act 1992 provide for civil penalties.
What if everyone in the property is a full-time student?: An all-student household is 100% exempt from Council Tax, so the annual bill drops to £0. To count as full-time the course must last at least 1 year and involve at least 21 hours of study a week; for a course up to A level taken by someone under 20, at least 3 months and 12 hours a week. If a student lives with one non-student adult, the non-student gets the 25% Single Person Discount instead of full exemption.
Can I pay over 12 months instead of 10?: The bill is usually split into 10 monthly payments, and you can ask Rhondda Cynon Taf to spread it over 12 instead. For Band I the 10-instalment figure is £534 a month and the 12-instalment figure is £445 a month, before any discounts. The annual total is unchanged. If you are struggling to pay, contact the council straight away rather than missing an instalment.