The 3-year, 7-year and 20-year rules: what each one means for stamp duty and leases

In England, lease and stamp-duty questions often use the same numbers for different legal tests. The 7-year point is mainly about registration and SDLT return exemptions, the 20-year point is mostly Scottish lease law or VAT, and the 3-year point is the main-home replacement window across the UK’s property taxes.

What is the 7-year rule for a lease?

The 7-year rule for a lease means that, in England and Wales, a lease granted for more than 7 years must normally be registered at HM Land Registry, while in England and Northern Ireland a separate SDLT rule may exempt a 7-year-or-more lease from an SDLT return if the premium is under £40,000 and annual rent is under £1,000. The registration rule comes from the Land Registration Act 2002, which catches a lease “for a term of years absolute of more than seven years from the date of the grant”; that is why an 8-year lease is treated differently from a 6-year lease for land-registration purposes. The SDLT 7 year lease rule is not the same test: HMRC says no return is needed where “you buy a new or assigned lease of 7 years or more, as long as the premium is less than £40,000 and the annual rent is less than £1,000.” SDLT does not apply in Scotland or Wales.

What is the 20-year rule for a lease?

The 20-year rule for a lease is not one UK-wide lease rule: in Scotland, a residential lease capable of lasting more than 20 years is restricted by long-lease dwelling-house law, while across the UK a separate VAT option-to-tax rule can be revoked after more than 20 years. The Scottish lease rule comes from the Land Tenure Reform (Scotland) Act 1974, which defines the relevant lease by whether it could “extend for more than 20 years”; the practical point is that Scottish residential leases cannot simply be made ultra-long in the way English leasehold flats commonly are. The VAT 20 year lease rule is different and is not really about the lease term at all: under VATA 1994 Schedule 10, an option to tax land “may be revoked if the time that has lapsed since the day on which the option had effect is more than 20 years.” One number is doing two jobs, so identify the tax or property-law context before acting.

What is the 3-year rule for stamp duty?

The 3-year rule for stamp duty is now the main-home replacement window across SDLT in England and Northern Ireland, LTT in Wales and LBTT in Scotland, but Scotland’s 36-month LBTT reclaim window only applies to transactions on or after 1 April 2024 and was 18 months before then. For SDLT, the rule can prevent the higher rates from applying where the previous main residence was sold in the 3 years before the new purchase, and HMRC also says a refund claim requires that “You must have sold your previous main home within 3 years of buying the new property, unless exceptional circumstances apply.” Wales uses Land Transaction Tax rather than SDLT, but the Welsh refund test is the same length: “You must have sold your previous main residence within 3 years of buying the new property to qualify for a refund.” Scotland uses LBTT and ADS; Revenue Scotland states: “For transactions with an effective date on or after 1 April 2024 the buyer has a 36-month period to dispose of the previous main residence.”

Last reviewed September 2026.

Sources

• Land Registration Act 2002 s.4(1)(c) — “for a term of years absolute of more than seven years from the date of the grant” Source
• HMRC, Stamp Duty Land Tax: transactions that do not need a return — “you buy a new or assigned lease of 7 years or more, as long as the premium is less than £40,000 and the annual rent is less than £1,000” Source
• Land Tenure Reform (Scotland) Act 1974 s.8(4) — “extend for more than 20 years” Source
• Value Added Tax Act 1994 Schedule 10 paragraph 25(1) — “may be revoked if the time that has lapsed since the day on which the option had effect is more than 20 years” Source
• Finance Act 2003 Schedule 4ZA paragraph 3(6)(b) — “during the period of three years ending with the effective date of the transaction concerned” Source
• HMRC, Apply for a refund of the higher rates of Stamp Duty Land Tax — “You must have sold your previous main home within 3 years of buying the new property, unless exceptional circumstances apply.” Source
• Welsh Revenue Authority, Claim a refund of Land Transaction Tax higher rates — “You must have sold your previous main residence within 3 years of buying the new property to qualify for a refund.” Source
• Revenue Scotland, Reclaiming ADS paid on previous main residence sold — “For transactions with an effective date on or after 1 April 2024 the buyer has a 36-month period to dispose of the previous main residence.” Source