SDLT Calculator - 2025/2026 UK
Free, Instant & No Email Required
Nick Garner, Land Tax Expert
Welcome! This free SDLT calculator goes further than the HMRC tool, covering linked transactions, surcharges, gifts, company transfers, and reclaim workflows so you get an accurate figure the first time.
Alongside completing more than 500 successful reclaim reviews, I’ve written two concise guides on UK land taxes: YPN Land Tax Essentials for Residential Property Investors and Property Land Tax Guide 2024.
Need help? Email [email protected] with a concise summary of your scenario and any supporting detail, and I will confirm the appropriate SDLT/LTT/LBTT treatment.
ℹ️ Important
This calculator provides estimates based on current SDLT rates and rules under the Finance Act 2003.
Auto-Save Feature
Your progress is automatically saved as you fill out the form. If you refresh the page or return later, your data will be restored.
Limitations
This calculator covers standard residential and non-residential property purchases, leases (Sections 52–57), shared ownership (Schedule 9), linked transactions (section 55 FA 2003), and higher rate surcharges (Schedule 4ZA). It does not cover:
- Non-monetary consideration, exchanges, or debt as consideration (Sections 47, 49, 50, 51)
- Connected companies or deemed market value provisions (Section 53)
- Corporate reconstructions, acquisition relief, or share exchanges (Schedules 7A and 7B)
- Variable rent reviews, uncertain lease terms, or complex lease structures
- Sub-sale relief, transfer of rights, or conditional contracts
If you have a query, email [email protected] with your query and I will respond as soon as possible.


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