UK SDLT Calculator
Estimate Stamp Duty Land Tax for England and Northern Ireland with current residential bands, first-time buyer relief, additional-property surcharge, non-resident surcharge, mixed-use rates, and a full band trace.
Last Updated: May 2026
UK SDLT
Calculate stamp duty with reliefs, surcharges, and a full band trace
Model England and Northern Ireland SDLT for home movers, first-time buyers, second homes, non-UK residents, mixed-use purchases, and lease NPV rent tax.
Rule Snapshot: 1 April 2025
Standard residential rates run 0%, 2%, 5%, 10%, and 12%. Additional residential properties add 5 percentage points; non-UK resident residential purchases usually add 2 percentage points.
SDLT Inputs
SDLT applies in England and Northern Ireland. Scotland and Wales use different taxes.
Optional. For new residential leases, rent NPV tax is 1% above the residential NPV threshold.
UK SDLT Calculator Disclaimer
This calculator is for educational and planning use. It does not replace HMRC's official SDLT calculator, conveyancer review, legal advice, replacement-main-residence analysis, linked-transaction rules, company/trust rules, leasehold calculations, or final SDLT return preparation.
Reviewed For Methodology, Labels, And Sources
Every CalculatorWallah calculator is published with visible update labeling, linked source references, and review of formula clarity on trust-sensitive topics. Use results as planning support, then verify institution-, policy-, or jurisdiction-specific rules where they apply.
Reviewed by Iliyas Khan, Chief Operating Officer. Page updated May 2026. Tax, sales tax, insurance, and health calculators are reviewed when rules, rates, eligibility assumptions, healthcare standards, or source references change. Topic ownership: Tax calculators, Sales tax calculators, Insurance calculators, Health calculators.
Tax credentialed review: Named internal reviewer: Iliyas Khan, Chief Operating Officer. External credentialed professional review is still required before this page is treated as professional advice.
Internal tax and sales-tax methodology reviewer. Review scope: calculator assumptions, labels, source context, workflow clarity, and compliance-sensitive disclaimers.
Relevant review context: CalculatorWallah tax and sales-tax calculator workflow owner; Source-first review of IRS, state revenue, rate, and filing-sensitive references; Compliance-sensitive labels, assumptions, and user-facing disclaimer review.
Required professional credentials: CPA, Enrolled Agent, licensed tax professional. Scope: tax formulas, jurisdiction assumptions, withholding language, filing-sensitive examples, and compliance caveats.
This page is educational planning support. A named CPA, EA, or licensed tax professional should review the page before it is positioned as tax advice or used for filing decisions.
Source expectation: Review should cite current IRS, state revenue department, payroll-tax, or official tax authority sources where applicable.
How to Use This Calculator
Use this calculator for purchases in England and Northern Ireland. Enter the purchase price, then choose the buyer profile that matches the legal facts: standard buyer, first-time buyer, or additional residential property.
If the buyer is non-UK resident for SDLT, turn on the non-resident surcharge. If the transaction is mixed-use or non-residential, switch property type so the calculator uses the separate non-residential bands.
Step 1: Enter the purchase price
Use the chargeable consideration for the property, normally the price you are paying.
Step 2: Choose buyer type
Select standard, first-time buyer, or additional residential property depending on ownership facts.
Step 3: Choose property type
Use residential for homes in England or Northern Ireland, or non-residential/mixed-use for commercial or mixed transactions.
Step 4: Set non-resident status
Turn on the non-UK resident surcharge if the residential purchase falls inside the SDLT non-resident rules.
Step 5: Add lease NPV only if relevant
For a new residential lease with rent NPV above the threshold, enter the NPV to estimate the extra rent tax.
Step 6: Review the band trace
Use the band table to see the exact slices, base rates, surcharges, final rates, and tax.
How SDLT Is Calculated
SDLT is a slice-based tax. Each part of the purchase price is taxed at the rate for that band. You do not pay the highest rate on the whole price. The calculator then layers on any residential surcharges and adds lease NPV rent tax where relevant.
| Residential band | Standard rate |
|---|---|
| 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% |
First-time buyer relief changes the first bands only when the property is £500,000 or less. Additional-property and non-resident surcharges are percentage-point additions to the residential rates.
UK SDLT Rates, Reliefs, Surcharges, and Buyer Checks
What Makes This SDLT Calculator Different
A basic stamp duty calculator gives one number. This one shows the band trace, base SDLT, additional-property surcharge, non-resident surcharge, lease NPV rent tax, and side-by-side buyer scenarios. That makes the result easier to discuss with a conveyancer before exchange or completion.
It uses GOV.UK rates reviewed in May 2026, including the post-1 April 2025 thresholds and the 5 percentage point higher rates for additional residential properties.
Reliefs and Surcharges
| Item | Calculator treatment | Important limit |
|---|---|---|
| First-time buyer relief | 0% to £300,000, then 5% to £500,000 | Unavailable above £500,000. |
| Additional residential property | +5 percentage points | Usually applies when the purchase leaves you owning more than one residential property. |
| Non-UK resident surcharge | +2 percentage points | Usually stacks with other residential SDLT rates. |
| Mixed-use/non-residential | 0%, 2%, then 5% | Uses separate commercial-style bands. |
| Residential lease NPV | 1% above £125,000 NPV | Added separately to the premium SDLT estimate. |
First-Time Buyer Cliff Edge
From 1 April 2025, first-time buyers pay no SDLT up to £300,000 and 5% on the portion from £300,001 to £500,000. If the price is over £500,000, first-time buyer relief is not available and the normal residential rates apply.
This creates a practical cliff edge. A buyer at £500,000 can use relief, but a buyer just above £500,000 moves to standard residential SDLT. The scenario comparison is included so this effect is visible instead of hidden.
Common SDLT Mistakes
| Mistake | Why it matters | Better check |
|---|---|---|
| Using old pre-April 2025 thresholds | The temporary higher thresholds ended and the residential threshold returned to £125,000. | Use current rates for completions from 1 April 2025. |
| Assuming first-time buyer relief always applies | Relief is lost above £500,000 and all buyers must qualify. | Check ownership history and intended main residence use. |
| Forgetting the additional-property surcharge | Second homes and buy-to-let purchases can add 5 percentage points across every band. | Review property ownership at the end of completion day. |
| Ignoring residence status | Non-UK resident SDLT status can add a 2 percentage point residential surcharge. | Check the SDLT 183-day residence test and refund rules. |
| Using SDLT for Scotland or Wales | Scotland and Wales have different transaction taxes. | Use LBTT for Scotland and LTT for Wales. |
Useful Official Links
Use GOV.UK and your conveyancer for final filing positions, especially for linked transactions, trusts, companies, replacement-main-residence refunds, leasehold calculations, or multiple-property purchases.
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Frequently Asked Questions
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- 1.GOV.UK - SDLT residential property rates(Accessed May 2026)
- 2.GOV.UK - Stamp Duty Land Tax overview(Accessed May 2026)
- 3.GOV.UK - Higher rates of Stamp Duty Land Tax(Accessed May 2026)
- 4.GOV.UK - First-Time Buyers’ Relief manual(Accessed May 2026)
- 5.GOV.UK - SDLT on leasehold sales(Accessed May 2026)