# Biggest and smallest council tax rises in Wales (2026/27)

Vale of Glamorgan had the highest rise in Band D council tax of Wales’s 22 councils in 2026/27, at 6.6%.

Neath Port Talbot had the lowest, at 4.1%. The middle council, Merthyr Tydfil, had 5.3%.

Annual council tax change is measured differently in each nation, so Open Index ranks it within Wales only.

Worked out by Open Index from the Band D council tax figures.

| Rank | Area | Annual council tax change |
| --- | --- | --- |
| 1 | [Vale of Glamorgan](https://openindex.co.uk/vale-of-glamorgan) | 6.6% |
| =2 | [Caerphilly](https://openindex.co.uk/caerphilly) | 6.5% |
| =2 | [Conwy](https://openindex.co.uk/conwy) | 6.5% |
| 4 | [Monmouthshire](https://openindex.co.uk/monmouthshire) | 6.1% |
| 5 | [Flintshire](https://openindex.co.uk/flintshire) | 5.8% |
| =6 | [Denbighshire](https://openindex.co.uk/denbighshire) | 5.5% |
| =6 | [Gwynedd](https://openindex.co.uk/gwynedd) | 5.5% |
| =8 | [Ceredigion](https://openindex.co.uk/ceredigion) | 5.4% |
| =8 | [Isle of Anglesey](https://openindex.co.uk/isle-of-anglesey) | 5.4% |
| =10 | [Carmarthenshire](https://openindex.co.uk/carmarthenshire) | 5.3% |
| =10 | [Merthyr Tydfil](https://openindex.co.uk/merthyr-tydfil) | 5.3% |
| =10 | [Newport](https://openindex.co.uk/newport) | 5.3% |
| =10 | [Wrexham](https://openindex.co.uk/wrexham) | 5.3% |
| =14 | [Pembrokeshire](https://openindex.co.uk/pembrokeshire) | 5.2% |
| =14 | [Powys](https://openindex.co.uk/powys) | 5.2% |
| 16 | [Bridgend](https://openindex.co.uk/bridgend) | 5.1% |
| 17 | [Torfaen](https://openindex.co.uk/torfaen) | 4.7% |
| =18 | [Cardiff](https://openindex.co.uk/cardiff) | 4.5% |
| =18 | [Rhondda Cynon Taf](https://openindex.co.uk/rhondda-cynon-taf) | 4.5% |
| =18 | [Swansea](https://openindex.co.uk/swansea) | 4.5% |
| 21 | [Blaenau Gwent](https://openindex.co.uk/blaenau-gwent) | 4.2% |
| 22 | [Neath Port Talbot](https://openindex.co.uk/neath-port-talbot) | 4.1% |

Source: Worked out by Open Index from the Band D council tax figures. Covers Great Britain. Period: 2026/27. Period: 2026/27.

## Other rankings of this measure

- [England](https://openindex.co.uk/rankings/council-tax-change/england)
- [Scotland](https://openindex.co.uk/rankings/council-tax-change/scotland)
- [North East](https://openindex.co.uk/rankings/council-tax-change/north-east)
- [North West](https://openindex.co.uk/rankings/council-tax-change/north-west)
- [Yorkshire and The Humber](https://openindex.co.uk/rankings/council-tax-change/yorkshire-and-the-humber)
- [East Midlands](https://openindex.co.uk/rankings/council-tax-change/east-midlands)
- [West Midlands](https://openindex.co.uk/rankings/council-tax-change/west-midlands)
- [East of England](https://openindex.co.uk/rankings/council-tax-change/east-of-england)
- [London](https://openindex.co.uk/rankings/council-tax-change/london)
- [South East](https://openindex.co.uk/rankings/council-tax-change/south-east)
- [South West](https://openindex.co.uk/rankings/council-tax-change/south-west)

- [The map](https://openindex.co.uk/map/council-tax-change)
- [Source and method](https://openindex.co.uk/sources/council-tax-change)

## How to cite

Source: Open Index, openindex.co.uk. Link to this page, https://openindex.co.uk/rankings/council-tax-change/wales.

Open Index's own text and the figures it works out are licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source data keeps its publishers' licences, named with each figure. Give each figure's period and source with it.

Snapshot 2026.10.11. The HTML page: https://openindex.co.uk/rankings/council-tax-change/wales