Legally, it is not possible to challenge your valuation until 1 April 2026, which is the date the 2026 rating list comes into effect.
It is still possible to update the details the Valuation Office Agency has about your property or tell them if you think your valuation is wrong, for example your rateable value is too high, by raising a check against your 2023 valuation. You can do this through your business rates valuation account on the GOV.UK website.
Any changes made to your 2023 valuation could result in your rateable value going up or down. This may also affect your future valuation from 1 April 2026.
You must continue to pay your business rates as normal until a decision has been made on your case. If you are due a refund when your case is resolved this will be calculated and issued by the council.