Stamp Duty Calculator

Stamp Duty Calculator: Work Out Your SDLT Bill in Minutes

Buying a home in the UK means budgeting for more than just the purchase price. Stamp duty — officially Stamp Duty Land Tax (SDLT) — is usually the largest one-off tax cost of a property purchase in England and Northern Ireland. Stamp duty (sometimes called SDLT or, more loosely, property purchase tax) applies whenever you buy a home, second property, or piece of land above a set price threshold.

A stamp duty calculator lets you enter your purchase price, buyer type, and location, then instantly see exactly what you owe. This guide explains how the calculation works, walks through every band and surcharge, and covers the buyer types — first-time buyers, home movers, landlords, non-UK residents, and company buyers — that most calculators skip.

This article is the companion guide to IntelCalculator’s full Stamp Duty Calculator Suite, a 12-tool set covering SDLT, Scotland’s LBTT, Wales’s LTT, buy-to-let purchases, commercial property, refunds, filing deadlines, and ongoing ownership costs. Wherever a specific tool in that suite answers a question below, we’ve named it directly.

What a Stamp Duty Calculator Does

A stamp duty calculator takes your property price, location, and buyer status, then applies the correct tax bands automatically so you don’t have to do the maths by hand. It returns your total tax bill, a band-by-band breakdown, and your effective (average) tax rate in seconds.

This matters because stamp duty is not a flat percentage of the purchase price. It’s a banded, or tiered, tax — similar to how income tax works. Different portions of your purchase price are taxed at different rates, and the calculator does that slicing for you.

What Is Stamp Duty Land Tax (SDLT)?

Stamp Duty Land Tax (SDLT) is a tax charged by HMRC when you buy residential property or land in England or Northern Ireland above a minimum price threshold. It is a one-off tax paid at the point of purchase, not an ongoing annual charge.

You may also see it referred to informally as a “property transaction tax” or “house purchase tax” — these are the same tax, just described in plainer language. It is separate from Council Tax, which is a recurring local charge you pay for as long as you own or rent the property.

SDLT only applies in England and Northern Ireland. Scotland and Wales each have their own equivalent tax with different names, thresholds, and rates, which we cover in detail later in this guide.

How Stamp Duty Bands Work

Think of your purchase price as a stack of slices. Each slice sits inside a price band, and each band has its own tax rate. You only pay the higher rate on the portion of the price that falls inside that higher band — not on the whole purchase price.

The formula, in plain English:

Tax for a band = (portion of the price that falls within that band) × (that band’s rate)

You add up the tax owed for every band the price passes through to get your total bill.

Current SDLT Rates for Standard Home Purchases (England & Northern Ireland)

In plain terms: there’s no tax on the first £125,000 of any standard purchase, then 2%, 5%, 10%, and 12% apply to each higher slice of the price in turn. These are the standard rates that apply from 1 April 2025 onward, per HMRC’s published SDLT guidance, after the temporary higher nil-rate threshold introduced in September 2022 expired.

A few property terms worth defining before we go further: a freehold property means you own the building and the land it sits on outright, with no time limit. A leasehold property means you own the right to live there for a fixed number of years under a lease from the freeholder. Completion is the legal moment ownership transfers to you — it’s usually the date your SDLT rate is locked in. Your conveyancer (a solicitor who specialises in property transactions) normally files your SDLT return and pays HMRC on your behalf, using funds collected from you as part of the purchase.

How the 14-Day Filing Deadline Works in Practice

You must file your SDLT return and pay any tax owed within 14 days of completion. In practice, your conveyancer handles this as part of the conveyancing process and builds the tax into your final completion statement, so you rarely deal with HMRC directly.

If the deadline is missed — even by a few days — HMRC can charge an automatic penalty starting at £100, rising further the longer the return remains outstanding, plus interest on any unpaid tax. If your mortgage lender pushes your completion date back, your SDLT rate is based on whatever rates are in force on the actual completion date, not the date you originally expected to complete — so a delayed completion around a Budget announcement can genuinely change what you owe.

Where Stamp Duty Fits in the Home-Buying Timeline

Stamp duty is calculated and paid at completion — the final step of a property purchase, after your offer is accepted, your mortgage is approved, and your searches and surveys are done. Most buyers work out an approximate mortgage budget first using a mortgage calculator, then check affordability against ongoing repayments with a home mortgage calculator, and only then run the numbers on stamp duty once they have a realistic purchase price in mind. Getting the order right avoids the common mistake of budgeting for a mortgage without leaving room for the tax bill on top.

Why Is Stamp Duty Banded Rather Than Flat?

Stamp duty is banded, not flat, so that the tax burden rises broadly in line with a buyer’s ability to pay. A flat percentage on the full price would tax a £150,000 first home at the same rate as a £1.5 million mansion, which successive UK governments have judged unfair. The banded structure — the same design used for income tax — means lower-value purchases are taxed lightly or not at all, while higher-value purchases contribute proportionally more.

Calculator Guide: Understanding Every Input and Output

Input Fields Explained

• Property price — the full agreed purchase price before any deposit is subtracted.
• Buyer type — first-time buyer, home mover, or additional-property buyer (second home, buy-to-let, or company purchase). This determines which rate table applies.
• Location — England/Northern Ireland (SDLT), Scotland (LBTT), or Wales (LTT). Each nation has its own bands.
• Non-UK resident status — whether you’ve spent fewer than 183 days in the UK in the 12 months before completion. This only affects SDLT; Scotland and Wales have no non-resident surcharge.

Output Fields Explained

• Total tax due — the full amount owed across all applicable bands and surcharges.
• Band-by-band breakdown — exactly how much tax applies to each slice of the price, so you can see where the total comes from.
• Effective rate — your total tax as a percentage of the full purchase price. This is always lower than your top marginal band, because early slices of the price are taxed at 0% or a low rate.

Limitations of Any Stamp Duty Calculator

A calculator can only apply the rules it’s given. It cannot know your full legal circumstances, and it won’t automatically catch every relief or exemption. It typically won’t account for Multiple Dwellings Relief eligibility for older, protected transactions, mixed-use apportionment, or complex company-ownership structures without you specifying them directly.

It also can’t budget for the other costs of buying, such as legal fees, survey costs, or the fee to register your new ownership with the Land Registry. Always confirm your final figure with your conveyancer, and use a mortgage payoff calculator alongside it if you’re weighing overpayments against the cash you’ll need for tax at completion.

Who Should Use a Stamp Duty Calculator

• First-time buyers checking whether they qualify for relief and how much they’ll owe if they don’t.
• Home movers budgeting the full cost of their next purchase.
• Landlords and buy-to-let investors who need to factor in the additional-property surcharge.
• Non-UK residents buying in England or Northern Ireland, who face an extra surcharge on top of standard rates.
• Company buyers and investors considering a corporate purchase structure.

If you’re still deciding whether to buy or continue renting, run the numbers through a rent or buy calculator first — stamp duty is one of the biggest one-off costs that tips that decision, since it’s a cost renting simply doesn’t have.

First-Time Buyer Relief

First-time buyers get a reduced rate on properties priced at £500,000 or below.

If the property costs more than £500,000, no first-time buyer relief applies at all, and standard rates are charged on the full price instead.

Worked example: A first-time buyer purchases a flat for £320,000. They pay 0% on the first £300,000, then 5% on the remaining £20,000 = £1,000 total SDLT.

By definition, a first-time buyer cannot also be classed as an additional-property buyer, since claiming the relief requires that you don’t already own — and won’t own — any other residential property anywhere in the world at completion.

Additional Property Surcharge (Second Homes and Buy-to-Let)

If you’ll own more than one residential property at the end of the day you complete — a second home, holiday home, or buy-to-let — a 5 percentage point surcharge is added to every standard band, on top of standard SDLT rates. This applies to properties priced at £40,000 or more.

Worked example: A landlord buys a £250,000 buy-to-let. Standard SDLT on £250,000 would be £2,500. With the 5% surcharge added across the bands, the total rises to £15,000.

Landlords running the numbers on a purchase like this should also check the deal still works using a rental affordability calculator — the surcharge can meaningfully change the yield math on a marginal buy-to-let purchase.

The surcharge does not apply if you’re replacing your main residence and sell your previous home on the same day you complete. If you buy before selling — a common scenario when a chain is involved — you pay the higher rate upfront but can reclaim the surcharge within 12 months of selling your old main home.

Non-UK Resident Surcharge, Explained

If you’re buying residential property in England or Northern Ireland and you’ve spent fewer than 183 days in the UK in the 12 months before completion, an additional 2% surcharge applies on top of whatever other rates and surcharges you already owe — standard rates, the additional-property surcharge, or both.

This surcharge has applied since 1 April 2021 and is tested purely on physical presence in the UK, not nationality or visa status. A UK citizen who has been living abroad can be caught by it just as easily as a foreign national.

Dual-Surcharge Worked Example: Non-Resident Buying a Second Home

This is the highest-complexity calculation most calculators skip — a non-UK resident buying an additional property.

A non-resident landlord buys a £400,000 second home in England. They face standard rates, plus the 5% additional-property surcharge, plus the 2% non-resident surcharge — 7 percentage points added to every band above the nil-rate threshold.

Compare that to £10,000 for a standard, non-surcharged purchase at the same price — a difference of £28,000 driven entirely by the two stacked surcharges.

Buying Through a Company: ATED and SDLT

Investors sometimes consider buying property through a limited company for tax-planning reasons. If you’re weighing that route, two extra rules apply that individual buyers don’t face.

SDLT for corporate buyers: All residential property bought by a company attracts the 5% additional-property surcharge automatically — there’s no “first property” exemption for companies the way there is for individuals. On top of that, residential property purchased for more than £500,000 by a “non-natural person” (typically a company) is charged a flat 17% SDLT rate, rather than the standard banded rates, unless a specific relief applies.

Reliefs from the 17% flat rate exist for companies using the property in a genuine property-rental business, in property development, as employee accommodation, or as a farmhouse let with farmland — but claiming a relief still requires filing an annual return.

Annual Tax on Enveloped Dwellings (ATED): Separately from SDLT, companies that continue to hold residential property worth more than £500,000 must pay ATED — an annual charge, not a one-off purchase tax. For the 2026/27 tax year, ATED charges range from roughly £4,400 to over £286,500 depending on the property’s value band, and they rise each year in line with inflation. Even where a relief reduces the ATED bill to zero, a return still has to be filed every year.

Buying through a company is a complex, transaction-specific decision that depends on your income tax position, corporation tax, and long-term plans — always get advice from a qualified tax adviser before structuring a purchase this way.

Multiple Dwellings Relief: What Changed and What It Means Now

Multiple Dwellings Relief (MDR) used to let buyers purchasing two or more residential properties in a single transaction calculate SDLT on the average price of the properties rather than the combined total — often producing a significantly lower bill.

MDR was abolished for transactions completing on or after 1 June 2024. HMRC found no strong evidence that the relief was achieving its original goal of encouraging investment in rental housing supply, and it had become a common target for aggressive and disputed claims — particularly on “granny annexe” purchases. If your purchase completed before that date, or your contract was exchanged before 6 March 2024, you may still be eligible; speak to your conveyancer and check current HMRC guidance directly, since transitional rules are specific and time-limited.

One related relief still exists: buying six or more residential properties in a single transaction still qualifies for non-residential SDLT rates instead of residential ones, which can be lower for a large portfolio purchase — this “six-or-more rule” is separate from MDR and was not affected by its abolition.

Mixed-Use and Part-Commercial Purchases

A property that combines residential and non-residential elements — a shop with a flat above it, or a farmhouse sold with commercial farmland — is taxed as mixed-use property, not as standard residential property.

Mixed-use and non-residential purchases use their own, generally lower rate table: 0% up to £150,000, 2% on the next slice up to £250,000, and 5% on anything above £250,000. Critically, none of the residential surcharges — the additional-property surcharge or the non-resident surcharge — apply to a genuinely mixed-use purchase, which can make it meaningfully cheaper than buying an equivalent all-residential property. HMRC scrutinises mixed-use claims closely, so the non-residential element needs to be genuine and substantial, not incidental.

How Stamp Duty Rates Have Changed Since 2022

Stamp duty is one of the more volatile UK taxes, and rates can move at any Budget. A short timeline for context:

• September 2022: A mini-Budget temporarily raised the residential nil-rate threshold to £250,000 and the first-time buyer threshold to £425,000.
• 31 October 2024: The Autumn Budget raised the additional-property surcharge from 3% to 5%, and raised the flat corporate rate on properties over £500,000 from 15% to 17%.
• 1 June 2024: Multiple Dwellings Relief was abolished.
• 1 April 2025: The temporary 2022 thresholds expired. Rates reverted to the current standard bands — £125,000 nil-rate for standard buyers, £300,000 for first-time buyers.

Because SDLT can change with any Budget, we review this guide against HMRC’s published rates at least twice a year.

England/NI vs Scotland vs Wales: Which Tax Applies Where

Property transaction tax is devolved across the UK, so the tax you actually pay depends entirely on where the property is, not where you live. You may see Scotland’s tax referred to informally as “Scottish stamp duty” — but it’s a legally separate tax with its own name, bands, and rules, not simply a rebranded version of SDLT.

Scotland: LBTT Rates and Bands

First-time buyers in Scotland get a raised nil-rate threshold of £175,000, with no upper price cap on eligibility. Additional properties (second homes, buy-to-let) face the Additional Dwelling Supplement (ADS) — currently 8%, charged on the entire purchase price rather than band-by-band, which is a meaningfully different mechanic from England’s marginal surcharge.

Wales: LTT Rates and Bands

Wales offers no first-time buyer relief — the Welsh Government’s position is that the £225,000 nil-rate band, the highest of the three nations and available to every buyer regardless of history, already does the same job. Additional residential properties are taxed under a separate higher-rate LTT schedule, broadly five percentage points above the main rates at each band.

Buyer-Type Comparison at a Glance

Practical Examples and Sample Calculations

Example 1 — Home mover buying at £350,000 (England): 0% on £125,000 = £0; 2% on £125,000 (to £250,000) = £2,500; 5% on £100,000 (to £350,000) = £5,000. Total: £7,500. Effective rate: 2.1%.

Example 2 — First-time buyer at £280,000: 0% on the full £280,000, since it’s under the £300,000 threshold. Total: £0.

Example 3 — Second-home buyer at £600,000: Standard bands plus 5% surcharge throughout: £8,750 (£125,000 at 7%) + £11,250 (£125,000 at 9%) + £33,750 (£337,500 to £575,000… ) — using the calculator directly is the fastest way to check a figure like this once multiple bands and a surcharge combine, since manual calculation error risk rises sharply with each additional band. Total: roughly £41,250.

Example 4 — Threshold-negotiation case study: A buyer agrees a purchase at £930,000, which falls £5,000 into the 10% band. By negotiating the price down to £925,000 — sitting exactly at the top of the 5% band — they avoid the 10% band entirely. The saving is £500 for every £1,000 shaved off the price within that band, meaning a £5,000 price reduction can save considerably more than £5,000 in tax once you account for how the marginal band works. This is one of the few negotiating levers where a small price concession from the seller can save the buyer far more than the seller loses.

Stamp Duty vs. Other Home-Buying Costs

Stamp duty is usually the largest single tax on a purchase, but it isn’t the only cost. Typical additional costs include legal/conveyancing fees, a survey, mortgage arrangement fees, and a fee to register your ownership with the Land Registry. IntelCalculator’s Stamp Duty Calculator Suite includes a dedicated Land Registry Fee card for this exact figure; a standalone Land Registry fee guide page is planned but not yet published on this site — check back, or ask your conveyancer for the current fee scale in the meantime.

Budgeting for stamp duty alongside these costs — not in isolation — is the difference between an accurate moving budget and an unpleasant surprise at completion. Pairing this calculator with an income tax calculator is also worth doing if you’re weighing a company purchase structure, since your personal tax position affects whether incorporation actually saves money once ATED and corporation tax are factored in.

Common Mistakes to Avoid

• Assuming stamp duty is a flat rate. It’s banded — you never pay your top rate on the whole price, only on the portion inside that band.
• Assuming every buyer qualifies for first-time buyer relief. It’s lost entirely above £500,000 and unavailable if you or any joint buyer has owned property before, anywhere in the world.
• Forgetting the surcharge threshold is per-transaction, not per-buyer, when a couple or group jointly purchases an additional property.
• Assuming Multiple Dwellings Relief still applies. It was abolished from 1 June 2024 — many older online guides have not been updated to reflect this.
• Missing the 14-day filing deadline, which triggers an automatic penalty even if the delay is unintentional.

Pro Tips and Best Practices

• Always confirm your applicable rate with your conveyancer against the completion date, not the offer or exchange date — rates in force on completion are what count.
• If your purchase price sits just above a band threshold, ask whether a small negotiated reduction could move you into a lower band entirely.
• If you’re a landlord or non-resident buyer, run the dual-surcharge scenario explicitly rather than assuming a single surcharge — stacking is easy to underestimate.
• If considering a company purchase, model SDLT, ATED, and corporation tax together, not SDLT in isolation — the true cost comparison only makes sense as a package.

Frequently Asked Questions

What is the current stamp duty threshold in England?

The threshold is £125,000 for standard residential purchases in England and Northern Ireland. Properties at or below this amount incur no SDLT.

Do first-time buyers pay stamp duty in 2026?

First-time buyers pay nothing on the first £300,000 of a property priced at £500,000 or below, and 5% on the portion between £300,001 and £500,000. Above £500,000, no relief applies and standard rates are charged on the full price.

How much extra do I pay on a second home?

A 5 percentage point surcharge is added to every standard band once the property costs £40,000 or more, whether it’s a second home, holiday home, or buy-to-let.

Is stamp duty the same across the whole UK?

No. SDLT applies only in England and Northern Ireland. Scotland charges LBTT, administered by Revenue Scotland, and Wales charges LTT, administered by the Welsh Revenue Authority — each with different bands and rates. LBTT is sometimes called “Scottish stamp duty” informally, but it’s a separate tax, not a renamed version of SDLT.

When do I have to pay stamp duty?

Within 14 days of completion. Your conveyancer usually handles filing the return and paying HMRC on your behalf, using funds included in your completion statement.

Can I get my stamp duty surcharge back?

Yes, if you paid the additional-property surcharge because you temporarily owned two homes, and your previous main home sells within the allowed time limit — currently 12 months from that sale — you can reclaim the surcharge from HMRC.

Does stamp duty apply to land as well as houses?

Yes. SDLT applies to both property and land purchases above the relevant threshold, including undeveloped land bought for future building.

What is the exact non-UK resident stamp duty surcharge percentage?

It’s 2%, added on top of whatever other rates and surcharges already apply — standard rates alone, or standard rates plus the 5% additional-property surcharge. Non-residence is judged by whether you spent fewer than 183 days in the UK in the 12 months before completion.

Does Multiple Dwellings Relief still exist?

No, not for new purchases. It was abolished for transactions completing on or after 1 June 2024. Some transactions with contracts exchanged before 6 March 2024 may still qualify under transitional rules — check with your conveyancer and current HMRC guidance if this applies to you.

Do I pay ATED if I buy a property through a limited company?

You may. ATED is an annual charge (separate from the one-off SDLT bill) that applies to companies holding UK residential property worth more than £500,000, unless a specific relief applies — for example, genuine property-rental businesses. A return must be filed every year even where a relief reduces the charge to zero.

What happens if my mortgage completes on a different date than expected — does my stamp duty rate change?

Yes, potentially. Your SDLT rate is fixed by the rates in force on your actual completion date, not the date you originally expected to complete. A delay that pushes your completion across a rate-change date can change your bill.

Can I pay stamp duty myself, or does my solicitor have to do it?

You can pay it yourself, but in almost all standard purchases your conveyancer files the SDLT return and pays HMRC directly using funds collected from you as part of the transaction, since they’re legally responsible for filing on time.

Is stamp duty the same for leasehold and freehold properties?

The same rate bands apply to both freehold and leasehold residential purchases. For new leasehold purchases, SDLT is also charged on the value of the rent over the life of the lease, on top of the tax on the purchase price itself, using a separate calculation.

How much is the Land Registry fee on top of stamp duty?

Land Registry fees are charged separately from stamp duty and scale with the property’s value, typically ranging from under £100 for lower-value properties to several hundred pounds for higher-value ones. A dedicated Land Registry fee guide for this site is in development.

Conclusion

Stamp duty is a banded tax, not a flat percentage, and the amount you owe depends heavily on your buyer type, your residency status, and which UK nation the property is in. Standard SDLT rates in England and Northern Ireland start at 0% up to £125,000 and rise to 12% above £1.5 million, with First-Time Buyer Relief, a 5% additional-property surcharge, and a 2% non-resident surcharge each changing the final number.

Scotland’s LBTT and Wales’s LTT use entirely different bands, thresholds, and surcharge mechanics, so always check the tax that actually applies to where you’re buying — not just the one you’re most familiar with. Company buyers face an extra layer entirely, between the 5% surcharge, the flat 17% rate above £500,000, and the separate annual ATED charge.

Use Intelliget Calculator’s Stamp Duty Calculator Suite to run your exact figures in seconds, whether you’re a first-time buyer, a home mover, a landlord, a non-resident, or weighing a company purchase — and revisit this guide periodically, since rates and reliefs like Multiple Dwellings Relief can and do change at any UK Budget.