Your band was set by what the house was worth in 1991
Not "based on 1991", not "indexed from 1991". England and Scotland have never revalued.The band your home sits in today was decided by what it would have sold for on 1 April 1991, and neither country has looked at it since.
Wales did revalue, to 2003 values with effect from 2005, and added a ninth band while it was there. That valuation is twenty-three years old rather than thirty-five, which is better and is still not recent. Northern Ireland has no council tax at all, using capital-value domestic rates instead, so band comparisons simply do not apply there.
The practical consequence is that your band is not a statement about what your house is worth. It is a statement about a hypothetical 1991 sale, which is why an extension you built in 2018 has not moved you up a band and why a street that has gentrified since is still banded as it was.
So the same letter is not the same tier
This is what catches people when they move, or when they compare a bill with family in another nation.
- England, Band D: £68,001 to £88,000, at 1991 values
- Scotland, Band D: £45,001 to £58,000, at 1991 values
- Wales, Band D: £91,001 to £123,000, at 2003 values
Three different tiers of property wearing the same letter. Wales has never shared England's thresholds even at 1991 prices: its original top band started at £240,000 where England's started at £320,000.
So "we are Band D too" is not a comparison. The only figure that compares across a border is the annual charge, and even that is set council by council rather than nationally.
Scotland changed its multipliers in 2017 and the top half diverged
Every band is a fixed multiple of Band D, so one number on your bill is enough to work out every other band in the same area. All three nations used to share the same ratios: 6:7:8:9:11:13:15:18, with Band D as 9.
Scotland replaced them in 2017 with 240:280:320:360:473:585:705:882 against a Band D of 360. Bands A to D come out arithmetically identical to the old ninths, so most households noticed nothing at all. Bands E to H did not.
A Scottish Band H now pays 2.45 times Band D where an English Band H pays 2. Two identical houses, same band letter, same Band D charge, either side of the border, do not pay the same multiple, and the gap widens the further up the bands you go. The tool prices that difference on your own Band D charge rather than a national average, because the average is not what you pay.
Band I, and why the top band matters more than it looks
Wales has a ninth band. England and Scotland stop at H, and because H is open-ended at the top, a house worth £400,000 in 1991 sits in exactly the same band as one worth four million. The band structure simply stops resolving, which is the strongest argument for the ninth band and the reason Wales added one when it revalued.
The upside of a challenge, and the downside
Challenging your band is free, and the tool shows the exact annual difference between your band and the one below it, which is the number the decision turns on.
Two things are usually left out of the advice. A challenge can move a band in either direction, so it is not a free option: the valuation office looks at the property properly rather than only at the case you have made. And it can affect neighbouring properties, because a successful argument about one house in a terrace is an argument about all of them.
The useful preparation is to check what similar houses in your street are banded at, since the test is the 1991 or 2003 value rather than today's, and neighbours in near-identical properties are the closest available evidence of what that value was.
The discount most people are entitled to and never claim
If you are the only adult in the property you get 25% off. It is not means tested, it applies to any band, and it is not automatic: you have to tell the council, and nobody will tell you.
Worth knowing alongside it: certain people are disregarded when the council counts adults, including full-time students, under-18s, live-in carers, apprentices on low pay and people with severe mental impairment. A household with two adults in it can still qualify for the single person discount if one of them is disregarded, and that is missed constantly.
Council tax reduction is separate again, is means tested, and is run scheme by scheme by each council rather than nationally. Premiums work the other way: many councils now charge extra on long-term empty homes and on second homes, which can be a substantial multiple rather than a small addition.
What Wales has legislated, and what is not in force
Wales has legislated for its next revaluation, at an antecedent valuation date of 1 April 2023 and taking effect from 2028, moving to five-yearly cycles afterwards.
It is not in force. No Welsh property currently sits in a band derived from 2023 values, so anything quoting 2023 bands today is describing a future position rather than your bill. This tool uses the 2003 bands that are actually in effect.
Common questions
Why is my council tax band based on 1991 prices?
Because England and Scotland have never revalued. Every home in both countries still sits in the band it was put in for what it was worth on 1 April 1991, and that valuation is now thirty-five years old. Wales did revalue, to 2003 values with effect from 2005, and added a ninth band at the same time. Northern Ireland does not use bands at all.
Is Band D the same everywhere?
No. This catches people out when they move. Band D is £68,001 to £88,000 in England and £45,001 to £58,000 in Scotland, both at 1991 values, against £91,001 to £123,000 in Wales at 2003 values. The same letter describes three different tiers of property, so comparing your band with a friend in another nation tells you nothing.
Why does a Scottish Band H cost more than an English one on the same Band D rate?
Scotland changed its band multipliers in 2017. All three nations used to share the ratios 6:7:8:9:11:13:15:18 against a Band D of 9. Scotland replaced the top half, so bands A to D still work out identically to England but E to H do not. A Scottish Band H pays 2.45 times Band D where an English one pays 2, which on the same Band D charge is a few hundred pounds a year of pure geography.
What does Band I mean and why have I never seen it?
Band I exists only in Wales. England and Scotland stop at H, which means the most expensive homes there sit in the same band as houses worth a fraction as much. Wales added the ninth band at the 2005 revaluation for exactly that reason.
Is challenging my band worth it?
It is free, and the tool shows what one band down is worth per year so you can judge it. The risk nobody mentions is that a challenge can move a band in either direction, and it can affect neighbouring properties too. Check what similar houses in your street are banded at first, because the test is the 1991 value rather than what the house is worth now.
Does Northern Ireland have council tax?
No. Northern Ireland uses capital-value domestic rates through Land and Property Services, which is a different tax on a different base. There are no bands and no Band D, so nothing on this page applies there.
What is the single person discount and do I have to apply?
It is 25% off, it is not means tested, and it is not automatic: you have to tell the council. It is also worth checking the disregards, because certain people are not counted as adults at all, including full-time students, under-18s, live-in carers and people with severe mental impairment. A household of two can still qualify on that basis.