Untap · Original research · 25 July 2026
The Band You Are In
Almost nobody challenges their council tax band, mostly because they are afraid it will go up. Here is how often that actually happens
Ask people why they have never questioned their council tax band and you get the same answer. They have heard that it can go up. The fear is specific, it is widespread, and it is the single biggest reason a household that is being overcharged carries on being overcharged.
The government publishes the answer. It is not easy to find, it has never been broken down by council, and the most recent edition is now two years old because the series has been postponed. But it is there, it covers every billing authority in England and Wales, and it says this: in the year to March 2024, 30 of 39,590 resolved challenges ended with the band going up. (Source: Valuation Office Agency, Council Tax: challenges and changes in England and Wales, March 2024, table CTCAC1_1.) One in 1,320.
Over the same period, 10,530 challenges ended with the band coming down. A household is roughly 350 times more likely to have its band lowered than raised.
The thing people are afraid of happens once in every 1,320 tries
Bands almost never go up
30 cases out of 39,590 across every billing authority in England and Wales, in a full year.
Source: VOA, Council Tax challenges and changes, March 2024.
Bands come down about a quarter of the time
10,530 reductions in a single year. A further 2,050 properties were removed from the list altogether.
Source: VOA, Council Tax challenges and changes, March 2024.
The informal route works more than twice as often as the formal one
There is more than one way to question a band, and the published data splits them. This is the part of the dataset nobody appears to have looked at.
| Route | Resolved | Band lowered | Success |
|---|---|---|---|
| Band reviewAsking the agency to look again, informally | 12,000 | 4,960 | 41.3% |
| ProposalThe formal challenge, with grounds and evidence | 24,250 | 4,630 | 19.1% |
| AppealEscalation to the valuation tribunal | 3,350 | 930 | 27.8% |
Source: Valuation Office Agency, Council Tax: challenges and changes in England and Wales, March 2024, tables CTCAC1_2 to CTCAC1_4. England and Wales, year to 31 March 2024.
Two things follow. The first is practical: if you think your band is wrong, the informal review is not a lesser version of the formal challenge. On these numbers it is the one that works. The second is that the widely quoted success rate of about a quarter is an average of two very different things, and quoting it alone understates what most people should expect.
Where people challenge most is not where challenging works best
The published tables carry every billing authority separately, so the challenge can be normalised against how many homes each council actually has. Doing that produces a spread of nearly ten times between the most and least challenged areas, and it does not line up with where challenges succeed.
Most challenged
| Watford | 58 | 9.1% |
| Reigate and Banstead | 52 | 13.6% |
| Brentwood | 51 | 23.5% |
| Knowsley | 43 | 11.4% |
| Barnet | 42 | 7.6% |
| Chelmsford | 40 | 26.7% |
| Tunbridge Wells | 36 | 25% |
| South Hams | 33 | 42.9% |
Least challenged
| Wandsworth | 6 | 30% |
| Sheffield | 8 | 19% |
| Manchester | 9 | 33.3% |
| Nottingham UA | 9 | 18.2% |
| Greenwich | 9 | 27.3% |
| Wakefield | 10 | 30.8% |
| Doncaster | 10 | 23.1% |
| Dudley | 10 | 27.3% |
Challenges received per 10,000 dwellings, then the share of resolved challenges that lowered the band. English authorities with at least 100 resolved challenges only, of which there are 165. Source: Valuation Office Agency, Council Tax challenges and changes March 2024, and Council Tax stock of properties 2025. Untap analysis.
Look at the two columns together. Watford has the highest challenge rate in England and one of the lowest success rates. Several of the least-challenged authorities sit near the top of the success table. Whatever is driving people to challenge in the first place, it is not a good signal of whether they are right.
The same pattern shows up across English regions. London resolved more challenges than anywhere else, 5,930, and lowered the band in only 17.5 per cent of them. The North West resolved 5,050 and lowered the band in 33.1 per cent, close to double the rate on fewer attempts.
One band down is worth about £265 a year, every year
Band multipliers are fixed in law, so the value of dropping one band is exactly the Band D charge divided by nine, whatever band you start from. Average Band D in England for 2026-27 is £2,392, which makes a one-band drop worth £265.78 a year. (Source: MHCLG, Council tax levels set by local authorities in England 2026 to 2027, Table 10.) That is not a one-off. It repeats every year you stay in the property, and a successful challenge is normally backdated to when the error began.
The figure varies by council because Band D does. In the authorities with the highest bills a single band is worth over £300 a year. In the two London boroughs with the lowest council tax in the country it is closer to £115.
What this data is, and what it cannot tell you
This is the most recent data that exists. The publication covers the year to 31 March 2024 and was released in August 2024. In September 2025 the agency postponed the series until data from its new operating system is assured, and no 2024-25 or 2025-26 edition has appeared. (Source: VOA, 2025 statistics announcements, schedule of updates.) Everything here should be read as a picture of that year.
England and Wales only. The agency has no remit in Scotland or Northern Ireland, and no equivalent per-authority statistics are published there. Wales is also structurally different: it uses a 2005 valuation list where England still uses 1991, it has nine bands rather than eight, and unresolved proposals transfer automatically to the tribunal, which inflates its appeal counts. Welsh authorities are excluded from the per-council tables above.
Small numbers are unreliable. Counts round to the nearest ten, so on a base of twenty or thirty a single case moves the rate by several points. The per-council tables here use only authorities with at least 100 resolved challenges, of which there are 165 in England. Only 45 reach 200. Rankings of all 296 would be noise.
Challenge outcomes are not the same as revaluations. The agency publishes a separate table of amendments, which records routine changes such as extensions and corrections, and that table does contain tens of thousands of band increases. Those are not the results of anybody challenging. Mixing the two would produce a frightening and completely wrong number, so nothing in this piece draws on it.
The people who challenge are not a random sample. Success rates describe households that decided something was wrong and acted. They do not tell you what share of all homes are in the wrong band.
Everything above, and where to check it
- VOA · Council Tax: challenges and changes in England and Wales, March 2024Released 29 August 2024. Per billing authority: challenges received, resolved and split by outcome, plus a time series to 1993-94. The source for every challenge figure in this piece. The series has since been postponed and no later edition exists.
- VOA · Council Tax: stock of properties, 2025Dwelling counts by band and billing authority as at 31 March 2025. Used as the denominator for the challenge rate per 10,000 dwellings.
- MHCLG · Council tax levels set by local authorities in England 2026 to 2027Published 25 March 2026. Table 10 gives average Band D by authority including precepts. Average England Band D is £2,392, the basis for the value of a one-band drop.
- VOA · Schedule of updates and announcements for VO statisticsRecords that the challenges and changes publication is postponed until data provision from the new operating system is updated and assured. The reason no 2024-25 edition exists.
- gov.uk · Challenge your Council Tax bandLive guidance on the free routes: asking the agency to review a band informally, and making a formal proposal where a right to do so exists.
If you think your band is wrong
Our guide walks through the neighbour comparison, the 1991 valuation check, what the agency actually looks at, and the risk of the band moving the other way. It is free, and we do not take a share of anything you get back.
Read the band challenge guidePublished by Untap, 25 July 2026. All underlying data comes from the Valuation Office Agency and the Ministry of Housing, Communities and Local Government. Untap helps people in the UK find money they are already owed. We do not file claims and we do not take a share of any refund. This is information, not financial or legal advice.