If you buy property or land in England or Northern Ireland above the relevant threshold, you have 14 days from the completion date to file a Stamp Duty Land Tax return and pay any tax due. The answer to when do you have to pay stamp duty is that short: two weeks from the day the transaction takes effect. For residential property, nothing is owed on the first £125,000 of the price, and first-time buyers pay nothing on the first £300,000.1GOV.UK. Stamp Duty Land Tax Overview
Where SDLT Applies
SDLT covers property and land transactions in England and Northern Ireland only. Scotland replaced it with Land and Buildings Transaction Tax in 2015, and Wales introduced Land Transaction Tax in 2018. If your purchase is in Scotland or Wales, the deadlines and rates here do not apply and you should look up the equivalent devolved tax.
What Starts the 14-Day Clock
The clock runs from the “effective date” of the transaction. Normally that is the completion date: legal title transfers, money moves, and you get the keys. The 14-day window applies to all transactions with an effective date on or after 1 March 2019.2HM Revenue & Customs. Changes to the Stamp Duty Land Tax Filing and Payment Time Limits
The effective date can be pulled forward if you take possession, or pay a substantial portion of the price, before formal completion. Buyers who move in early under a licence to occupy sometimes discover their filing deadline started weeks before they thought it did.
A return is still required even where no tax is due, provided the transaction is notifiable. A residential purchase above the nil-rate threshold is notifiable, so assuming zero tax means zero paperwork is a common and expensive mistake.3GOV.UK. Stamp Duty Land Tax Relief for Land or Property Transactions
Standard Residential Rates
Residential SDLT is progressive: you pay nothing on the portion within the nil-rate band, then rising percentages on the portions above. From 1 April 2025, the standard rates are:1GOV.UK. Stamp Duty Land Tax Overview
- Up to £125,000: 0%
- £125,001 to £250,000: 2%
- £250,001 to £925,000: 5%
- £925,001 to £1.5 million: 10%
- Above £1.5 million: 12%
On a £300,000 home, that works out to £5,000: nothing on the first £125,000, £2,500 on the next £125,000 at 2%, and £2,500 on the final £50,000 at 5%.
First-Time Buyer Relief
If you have never owned a home anywhere in the world, the nil-rate band rises to £300,000, and 5% applies to the portion between £300,001 and £500,000.4GOV.UK. Stamp Duty Land Tax Residential Property Rates The relief disappears entirely once the price exceeds £500,000, at which point the standard rates apply to the whole amount.
A first-time buyer paying exactly £500,000 owes £10,000. Pay £500,001 for the same property and the bill jumps to roughly £12,500. The relief must be claimed on the return; it is not automatic.
Higher Rates for Additional Properties
Buying a residential property while already owning another adds 5 percentage points to every band. This applies to second homes, buy-to-lets, and holiday properties costing £40,000 or more.5GOV.UK. Higher Rates of Stamp Duty Land Tax From 1 April 2025:
- Up to £125,000: 5%
- £125,001 to £250,000: 7%
- £250,001 to £925,000: 10%
- £925,001 to £1.5 million: 15%
- Above £1.5 million: 17%
On a £300,000 buy-to-let, the higher-rate bill is £14,000, compared with £5,000 under standard rates.
If you are buying a new main home but have not yet sold your old one, you pay the higher rate up front. You can claim a refund of the surcharge if you sell the previous main home within three years of the new purchase.6GOV.UK. Apply for a Refund of the Higher Rates of Stamp Duty Land Tax Miss that window and the extra tax stays paid.
Non-Residential and Mixed-Use
Commercial property and mixed-use land use a different scale: 0% up to £150,000, 2% on the next £100,000, and 5% above £250,000.1GOV.UK. Stamp Duty Land Tax Overview The top rate is 5%, well below the residential top band of 12%.
Penalties and Interest for Missing the Deadline
Filing late triggers an automatic £100 flat-rate penalty if the return arrives within three months of the due date. After three months, that doubles to £200.7Legislation.gov.uk. Finance Act 2003, Schedule 10 Both apply whether or not any tax was actually owed.
Longer delays bring tax-geared penalties on top. At six months, HMRC can charge the greater of £300 or 5% of the tax due, and the same again at twelve months. Interest accrues daily on unpaid tax from the moment the 14-day window closes.2HM Revenue & Customs. Changes to the Stamp Duty Land Tax Filing and Payment Time Limits On an expensive property, that stacks up fast.
How the Return and Payment Actually Get Made
In practice, your solicitor or conveyancer files the SDLT return online and pays HMRC from funds held in their client account on or shortly after completion. Confirming they will do this, rather than assuming it, is worth the two-minute email.8GOV.UK. Stamp Duty Land Tax Online and Paper Returns
Once the return goes in, HMRC issues an SDLT5 certificate and an 11-character Unique Transaction Reference Number, made up of 9 digits and 2 letters.9GOV.UK. Pay Stamp Duty Land Tax The reference is used to make payment, and the SDLT5 certificate must reach the Land Registry before it will register you as the new owner. No certificate, no title in your name.
Payment can be made online through your bank, by CHAPS (same or next working day), or by Bacs (about three working days).9GOV.UK. Pay Stamp Duty Land Tax With only 14 days to work in, CHAPS or Faster Payments are the safer choice near the end of the window.
Transactions Where Nothing Is Due and No Return Is Needed
Some transfers are outside SDLT entirely, meaning no tax, no return, no deadline to worry about. Property inherited under a will is almost always exempt, even where a mortgage is outstanding. Transfers between spouses or civil partners as part of a divorce or dissolution are exempt when made under a court order or a formal agreement.10GOV.UK. Stamp Duty Land Tax Transactions That Do Not Need a Return
A pure gift with no consideration at all also falls outside the tax. The catch is that “consideration” is broader than cash. Taking on someone else’s mortgage counts, so being added to a title deed and assuming part of an existing loan can create an SDLT liability even where no money changes hands.3GOV.UK. Stamp Duty Land Tax Relief for Land or Property Transactions Once any value moves in exchange for the property, the exemption is gone and the 14-day clock is back in play.