Wales
Average: £542.77 a month (£5,427.67 a year) across 22 councils
Lowest: Cardiff, £4,697.42 a year
Highest: Merthyr Tydfil, £6,051.73 a year
Property value: More than £424,000 (at 1 April 2003)
233.3% of Band D
Council Tax 2026/27
Council Tax Band I: Cost by Council
Band I Council Tax averages £542.77 a month in Wales in 2026/27, paid over 10 monthly instalments, or £5,427.67 a year. Below is every council's Band I charge, with the lowest and highest in each nation.
Band I at a glance, 2026/27
Averages count each council once and are not weighted by the number of homes, so they can differ from official national averages. Monthly figures assume the usual 10 instalments; over 12 instalments each payment is smaller but the yearly total is the same.
Band I Council Tax for every council
Tables start in alphabetical order. Use the column buttons to sort by name or by cost.
Wales (22 councils)
| Monthly (10 payments) | ||
|---|---|---|
| Blaenau Gwent | £5,906.27 | £590.63 |
| Bridgend | £5,781.98 | £578.20 |
| Caerphilly | £4,860.05 | £486.01 |
| Cardiff | £4,697.42 | £469.74 |
| Carmarthenshire | £5,486.13 | £548.61 |
| Ceredigion | £5,645.38 | £564.54 |
| Conwy | £5,769.91 | £576.99 |
| Denbighshire | £5,457.74 | £545.77 |
| Flintshire | £5,544.40 | £554.44 |
| Gwynedd | £5,760.46 | £576.05 |
| Isle of Anglesey | £5,275.04 | £527.50 |
| Merthyr Tydfil | £6,051.73 | £605.17 |
| Monmouthshire | £5,638.50 | £563.85 |
| Neath Port Talbot | £5,929.91 | £592.99 |
| Newport | £4,873.12 | £487.31 |
| Pembrokeshire | £5,054.35 | £505.44 |
| Powys | £5,487.35 | £548.74 |
| Rhondda Cynon Taf | £5,342.00 | £534.20 |
| Swansea | £5,222.68 | £522.27 |
| Torfaen | £5,029.92 | £502.99 |
| Vale of Glamorgan | £5,206.93 | £520.69 |
| Wrexham | £5,387.39 | £538.74 |
Full bill, including county, police and fire charges and an area-average parish or community council charge. Your own parish charge can differ slightly.
How Band I works
Every home in England, Wales and Scotland is placed in a band based on what it would have sold for on a fixed date: 1 April 1991 in England and Scotland, and 1 April 2003 in Wales. Your band does not change because prices have risen since then.
Each council sets its Band D charge each year. Band I is then a fixed share of that charge, set in law, so the cheapest and most expensive councils for Band D are also the cheapest and most expensive for Band I.
The figures here are the standard charge before any discount. If you are the only adult in your home you can usually get 25% off, and Council Tax Support can reduce the bill for people on a low income. Ask your council what you can claim.
Not sure of your band? Check the official band checker for England and Wales, or the Scottish Assessors for Scotland. For your exact bill, use the Council Tax Calculator or browse all councils.
Sources
- GOV.UK: How domestic properties are assessed for Council Tax bands (band values)
- Council Tax charges: each council's own page links to its official source.
Questions
Band I questions
How much is Band I Council Tax a month?
On average across councils, Band I costs £542.77 a month in Wales (£5,427.67 a year) in 2026/27, paid over 10 monthly instalments. Your own council's figure can be higher or lower than the average: find it in the tables on this page.
Which council has the cheapest Band I Council Tax?
The lowest Band I charge in 2026/27 is Cardiff in Wales (£4,697.42 a year).
Which council has the most expensive Band I Council Tax?
The highest Band I charge in 2026/27 is Merthyr Tydfil in Wales (£6,051.73 a year).
What property value is Band I?
Bands are based on what a property would have sold for on a fixed date, not what it is worth today. Band I covers Wales: more than £424,000 (value at 1 April 2003). The Valuation Office Agency decides which band a home is in.
How is Band I worked out?
Band I is a fixed share of your council's Band D charge: 233.3% in Wales. So a council with a higher Band D charge also has a higher Band I charge.
Why does Band I cost different amounts in different councils?
Each council sets its own Band D charge to pay for local services. In England and Wales the bill also includes county, police and fire charges, and a parish or community council charge, which vary by area.