ATED chargeable amounts for 2026/27 (verified per gov.uk on 2026-05-22) are £4,600, £9,450, £32,200, £75,450, £151,450 and £303,450 across the six taxable-value bands from £500,001 to over £20m. The figures derive from the FA 2013 s.99(4) original-enacted table (£3,500, £7,000, £23,350, £54,450, £109,050, £218,200) indexed each chargeable period via FA 2013 s.101 by the September-to-September CPI rise, rounded down to the nearest £50, with a Treasury Order issued before 1 April each year. The taxable value for a chargeable period is the open-market value of the single-dwelling interest at the most recent valuation date that pre-dates the start of the chargeable period. The current valuation date is 1 April 2022; the next 5-yearly revaluation date is 1 April 2027. From the 2027/28 chargeable period onwards, the chargeable value is the 1 April 2027 valuation. New-build and converted dwellings use acquisition or construction-completion value until the next 5-yearly revaluation date under FA 2013 ss.124-125. Mid-period acquisitions pro-rata under FA 2013 s.99(5)-(6); mixed-use buildings are just-and-reasonable apportioned under FA 2013 s.116; valuations within 10% of a band boundary can use the HMRC Pre-Return Banding Check (PRBC) concession. ATED applies to UK companies too (not only overseas); the original statute is FA 2013 Part 3 (not Schedule 33). This page walks the verified 2026/27 and 2025/26 comparison table, the s.99 plus s.101 indexation mechanism with full arithmetic, the 5-yearly revaluation cycle, the PRBC route around band boundaries, mid-period pro-rata, mixed-use apportionment and 14 of the most common rate-lookup questions.