How Council Tax Bands Work - The 1991 Valuation Explained

The 1991 Valuation Exercise

Council tax was introduced on 1 April 1993 to replace the Community Charge (poll tax). To implement it, the government needed to assign a tax band to every residential property in England and Wales. This was done through a mass valuation exercise, with the Valuation Office Agency estimating what each property would have sold for in an open-market transaction on 1 April 1991.

The exercise was not a precise valuation of every property. It was a desk-based exercise using available evidence: sales data, local market knowledge, and reference properties. The VOA assigned each property to one of eight bands based on these estimated values. The process was deliberately approximate, using banding ranges rather than precise figures precisely so that small errors in the estimate would not affect the banding outcome. Properties on the boundary between bands are the most susceptible to challenge.

At the time, the average house price in England was roughly £60,000 to £70,000, placing most properties in Bands C or D. The band D notional value range (£68,001 to £88,000) was set to represent the typical middle of the market. The bands above D (E through H) were intended to capture the more expensive minority of properties.

Because house prices have risen so dramatically since 1991, particularly in London and the South East, the distribution of properties across bands today does not match what was expected in 1993. Many properties that were firmly mid-market in 1991 are now relatively undervalued in band terms, and the relationship between bands and actual current market values has broken down significantly.

The 8 Bands and How Rates Are Calculated

Each local authority sets a Band D rate each year. All other bands are then calculated as fixed fractions of that rate, expressed in ninths. Band A is 6/9 of Band D; Band H is 18/9 (twice) Band D. These ratios are set by central government and cannot be changed by local councils.

Example: if your council sets Band D at £2,000, a Band A household pays £2,000 x 6/9 = £1,333. A Band H household pays £2,000 x 18/9 = £4,000.

Why Has There Been No Revaluation?

England has not revalued its council tax bands since 1991, making it one of the longest-running frozen valuation systems in any comparable country. Wales revalued in 2003, creating a 9th band (Band I) and resetting all Welsh properties to 2003 values. Scotland has not revalued since 1991.

A revaluation was planned for England in 2007 during the Blair government, but was abandoned following the Welsh experience. When Wales revalued in 2003, approximately a third of Welsh properties moved up at least one band. This generated significant public anger, even though some households moved down. The lesson drawn by English politicians was that any revaluation would be highly visible and politically damaging, regardless of whether it produced fairer outcomes overall.

The practical effect of no revaluation is a growing distortion. Properties in areas with strong price growth since 1991 (particularly London and the South East) are in relatively low bands compared to their current market position. A Band D house in Kensington in 1991 might now be worth many times more than a Band D house in County Durham, yet both pay the same fraction of their council's Band D rate.

There is no current government commitment to a revaluation. The Office of Tax Simplification and various think-tanks have repeatedly called for reform, but this remains politically unresolved as of April 2026.

When Can a Band Change?

Your band is not fixed permanently. It can change in the following circumstances:

• 1.
  Significant physical changes to the property. An extension, loft conversion, or major renovation that materially increases the size or value. The VOA may increase the band. Conversely, demolishing an extension or converting a property to a lower-value use could reduce the band.
• 2.
  Property split or merger. If a large house is converted into flats, new bands are assigned to each flat. If flats are merged, the combined property gets a new band.
• 3.
  Sale at an unexpectedly different price. If you buy a property and the sale price (at the time of the sale) suggests the 1991 band was significantly wrong, the VOA can reassess. This is the 'relevant transaction' trigger and is relatively rare.
• 4.
  Successful band challenge. If you or the VOA challenges the band and the evidence shows the original banding was wrong, the band changes. This can go up or down. See our band challenge guide.
• 5.
  Demolition and rebuild. A new property built on the site of a demolished one is assessed from scratch.

What This Means for Your Property

Your council tax band is an opinion formed in 1991. It is not a current valuation of your property. The VOA did not value every property individually in 1991 - it estimated values using reference properties and local market data, and applied the results across similar streets and property types. This process introduced a degree of imprecision that means some properties are in the wrong band relative to their genuine 1991 comparables.

Properties most likely to be in the wrong band are those near the boundary between two bands, or those in distinctive street or building types where the 1991 reference data was thin. If your neighbours' properties are of similar size, type, and age, and they are in a lower band than you, that is the most useful signal that your band may be too high.

Before challenging a band, use our postcode lookup to check a few nearby postcodes. If the pattern is consistent, that suggests the street was correctly banded and a challenge is unlikely to succeed. If you find clear anomalies, that is the starting point for a formal challenge.

Frequently Asked Questions