Stamp Duty Land Tax (SDLT) calculator for UK property
Buying property? Work out the Stamp Duty Land Tax due across residential, non-residential and mixed-use purchases, including the higher rates for additional dwellings.
- SDLT computed across all property bands
- Higher rates for additional dwellings
- Residential, non-residential and mixed use
- Part of the Property Investor Pack
When Stamp Duty is due
Stamp Duty Land Tax applies to property and land purchases in England and Northern Ireland (Scotland charges LBTT and Wales LTT instead). It's worked out in slices: each portion of the price falls in a band with its own rate, so you don't pay a single flat percentage on the whole price. Residential, non-residential and mixed-use purchases each have their own band structure.
Higher rates and reliefs
Buy an additional residential property — a second home or a buy-to-let — and a surcharge (currently 5%) is added to every band on top of the standard rates. First-time buyers, by contrast, pay nothing up to a higher threshold. Either way you must file an SDLT return and pay within 14 days of completion, even when no tax is due.
How we handle it
Enter the purchase price, property type and whether it's an additional dwelling, and we compute the SDLT across every band — standard rates, the additional-dwelling surcharge or first-time-buyer relief — so you know the bill before completion and have the figure ready for your return.
Solo Core £7.99 + Property Investor Pack £12.00 = £19.99/mo
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