HMRC Stamp Duty Calculator (England & Northern Ireland)
Estimate residential SDLT using standard rates, first-time buyer relief, and common surcharges.
Note: This calculator is an estimate based on residential SDLT bands for England and Northern Ireland (from April 2025 onward). Always confirm with HMRC or a solicitor before completing.
What this HMRC stamp duty calculator helps you do
If you are buying a home in England or Northern Ireland, this tool gives a quick estimate of Stamp Duty Land Tax (SDLT). It applies the tax in slices (marginal bands), then adds common surcharges like:
- Higher rates for additional properties (typically for second homes or buy-to-let purchases)
- Non-UK resident surcharge where applicable
You can also switch between standard and first-time buyer assumptions to see how eligibility changes your final bill.
How SDLT is calculated
Stamp duty in England and Northern Ireland is not charged as one flat rate on the full price. Instead, each portion of the property value is taxed at a different rate. That means crossing a band threshold does not tax the whole property at the higher rate—only the part above the threshold.
Residential standard bands (from April 2025)
- 0% on the portion up to £125,000
- 2% on £125,001 to £250,000
- 5% on £250,001 to £925,000
- 10% on £925,001 to £1.5 million
- 12% above £1.5 million
First-time buyer relief (from April 2025)
- 0% up to £300,000
- 5% on £300,001 to £500,000
- If the price is above £500,000, standard rates apply (no relief)
Worked examples
Example 1: Standard buyer at £350,000
Tax is charged in slices:
- £125,000 at 0% = £0
- £125,000 at 2% = £2,500
- £100,000 at 5% = £5,000
Total SDLT: £7,500
Example 2: First-time buyer at £350,000
- £300,000 at 0% = £0
- £50,000 at 5% = £2,500
Total SDLT: £2,500
Common mistakes buyers make
- Using the wrong tax system (Scotland uses LBTT, Wales uses LTT)
- Assuming first-time buyer relief always applies
- Forgetting additional-property surcharge when keeping an existing home
- Not checking whether the non-resident surcharge applies
- Budgeting for deposit and mortgage fees, but not SDLT cash due near completion
Practical tips before you exchange contracts
- Run several scenarios in advance (with and without reliefs/surcharges)
- Ask your conveyancer to confirm exact SDLT treatment for your circumstances
- Keep a cash buffer in case rates or classification change during your purchase timeline
- Check HMRC guidance for edge cases (mixed-use, leases, corporate buyers, linked transactions)
Final note
This page is designed to help you plan, compare properties, and avoid nasty surprises. It is not legal or tax advice. For a binding figure, rely on your solicitor or HMRC’s official tools and current guidance at the time you buy.