🏠 Stamp Duty Calculator Wales – Land Transaction Tax (LTT) 2026 | Main Home, Second Home & England Comparison

Stamp Duty Calculator Wales — Everything You Need to Know

If you're buying a home in Cardiff, Swansea, Newport, or anywhere else in Wales, the tax you'll pay on completion isn't actually called "stamp duty" any more — it's called Land Transaction Tax (LTT). Wales replaced Stamp Duty Land Tax (SDLT) with its own devolved system back in April 2018, and the rates, bands, and rules now differ meaningfully from those used in England and Northern Ireland. Our free stamp duty calculator Wales tool works out exactly how much LTT you'll owe on a main home or a second home/buy-to-let purchase, with a full band-by-band breakdown — and lets you compare your bill directly against the equivalent England SDLT charge.

This calculator is fully updated for 2026 rates as set by the Welsh Government and collected by the Welsh Revenue Authority (WRA) — not HMRC, which only administers stamp duty in England and Northern Ireland.

How to Calculate Stamp Duty (LTT) in Wales

Land Transaction Tax is a progressive, banded tax — exactly like income tax. You don't pay one flat rate on the whole purchase price; instead, each slice of the price that falls within a band is taxed at that band's rate. This is one of the most misunderstood parts of any stamp duty calculator Wales users search for, so it's worth getting right.

Wales has the highest nil-rate threshold of any UK nation at £225,000, which means a large proportion of first-time and lower-budget buyers pay no Land Transaction Tax at all — even though, unlike England, Wales offers no dedicated first-time buyer relief scheme.

Wales Higher Residential Rates — Second Homes & Buy-to-Let

If you already own another residential property anywhere in the world at the time of completion — including a second home, a holiday let, or a buy-to-let investment — you pay the Welsh higher residential rates instead of the standard bands above. Crucially, Wales does not simply add a flat surcharge on top like England does; it uses an entirely separate band structure.

Note that there is no nil-rate band at all under the higher residential rates — tax is due from the very first pound (subject to a £40,000 minimum-value exemption for very low-value transactions). This is one of the biggest traps for buy-to-let investors who assume the £225,000 main-home threshold also applies to them.

Stamp Duty Calculator Wales vs England — Key Differences

One of the most common comparisons UK buyers search for is stamp duty calculator England versus the Welsh equivalent. While both taxes work on the same banded principle, the numbers — and the rules — are quite different.

In practical terms: Wales is cheaper than England for properties under roughly £225,000 because England's nil-rate band is lower. Above that point, the gap narrows quickly — and once a property price passes around £350,000, the two systems can produce very similar totals, with England sometimes working out cheaper once first-time buyer relief or the lower standard rate band is factored in.

How Much Is Stamp Duty on a £400,000 House?

A £400,000 house sits right at a key threshold in the Welsh system, making it one of the most commonly searched stamp duty examples. Here's exactly how the maths works out for a main home, a second home, and the equivalent England purchase:

On a £400,000 main home in Wales, you'd pay £0 on the first £225,000 and 6% on the remaining £175,000 — a total of £10,500. The same purchase in England costs £10,000, calculated as £0 up to £125,000, 2% on the next £125,000, and 5% on the final £150,000. The gap of £500 is the most common real-world example people are checking when comparing a stamp duty calculator Wales result against the English equivalent.

Stamp Duty on a Second Home in Wales

Buying a second home — whether a holiday cottage in Pembrokeshire, a buy-to-let flat in Cardiff, or simply a property you'll own alongside your existing main residence — triggers the Welsh higher residential rates automatically. This applies even if the new purchase will become your main residence in future, unless you sell your previous main home within three years and claim a refund under the replacement-of-main-residence relief.

• The trigger: you (or your spouse/civil partner) own any other residential property worth £40,000 or more anywhere in the world at the effective date of completion.
• The relief: if you sell your previous main home within 3 years of buying the new one, you can reclaim the difference between the higher and standard rates from the WRA.
• Joint buyers: if either buyer on the transaction owns another property, the higher rates apply to the whole purchase — not just that buyer's share.
• Companies: corporate purchasers of residential property in Wales pay the higher rates on every purchase, with no nil-rate band available.

How Is Stamp Duty (LTT) Paid in Wales?

Understanding how stamp duty is paid matters just as much as knowing how much you owe. In Wales, the process works as follows:

1. Your solicitor calculates the LTT due based on the purchase price, buyer status, and whether the higher residential rates apply.
2. A Land Transaction Tax return is filed online through the Welsh Revenue Authority's portal — this is almost always handled by your conveyancing solicitor as part of the standard process.
3. Payment is due within 30 days of the effective date of the transaction (usually the completion date) — slightly longer than England's 14-day SDLT deadline.
4. The solicitor typically collects the LTT amount from you alongside their fees before completion, then pays it to the WRA directly on your behalf.
5. Late filing or late payment attracts both interest and fixed penalties from the Welsh Revenue Authority, so it's essential this is handled promptly even on cash purchases without a mortgage.

For official guidance and to file directly if you're handling your own conveyancing, the Welsh Revenue Authority's own LTT guidance is published on the gov.wales website — always check there for the most current rates before completion, since this calculator (like any third-party tool) should be used as an estimate rather than a substitute for professional advice.

Common Mistakes When Calculating Welsh Stamp Duty

• Applying the rate to the whole price: LTT is banded, not flat. A £300,000 home doesn't pay 6% on £300,000 — it pays 0% on £225,000 and 6% only on the remaining £75,000.
• Assuming the £225,000 nil-rate band applies to second homes: it doesn't. The higher residential rates start taxing from the very first pound (above the £40,000 exemption threshold).
• Confusing LTT with SDLT: if your property is in Wales, HMRC and the SDLT rates are irrelevant — you deal exclusively with the Welsh Revenue Authority and LTT rates.
• Forgetting the 3-year refund window: if you pay the higher rate because you haven't yet sold your previous home, you can usually reclaim the difference once the sale completes — but only within 3 years.
• Missing the 30-day deadline: even on simple cash purchases, LTT must be filed and paid within 30 days, or penalties apply.

Welsh Stamp Duty Rates — A Brief History

Wales introduced Land Transaction Tax on 1 April 2018, replacing the UK-wide SDLT system. Rates have changed several times since then — including a temporary uplift to the nil-rate band during the COVID-19 period, and a 1-percentage-point increase to the higher residential rates from 11 December 2024 (raising the surcharge structure that had previously started at 4%). If you're comparing against an older stamp duty calculator Wales 2021 figure or guide, be aware the bands in force today are different — always check you're using current 2026 rates, which this calculator applies automatically.

Frequently Asked Questions — Stamp Duty Calculator Wales

Q: How do I calculate stamp duty in Wales?
A: Stamp duty in Wales (Land Transaction Tax) is charged in bands: 0% up to £225,000, 6% up to £400,000, 7.5% up to £750,000, 10% up to £1.5 million, and 12% above that. You only pay each rate on the portion of the price within that band. Use the calculator above for an instant, fully worked breakdown.

Q: What are the Wales LTT rates for 2026?
A: For a main home: 0% to £225,000, 6% to £400,000, 7.5% to £750,000, 10% to £1.5 million, 12% above. For a second home or buy-to-let, the higher rates apply instead: 5% to £180,000, 8.5% to £250,000, 10% to £400,000, 12.5% to £750,000, 15% to £1.5 million, 17% above.

Q: How much is stamp duty on a £400,000 house in Wales?
A: A £400,000 main home in Wales pays £10,500 in Land Transaction Tax — £0 on the first £225,000 and 6% on the remaining £175,000. The equivalent England SDLT charge would be £10,000.

Q: Is the stamp duty calculator for Wales different from the one for England?
A: Yes. A stamp duty calculator England tool uses SDLT bands (collected by HMRC) with a £125,000 nil-rate threshold and first-time buyer relief. A Wales calculator uses LTT bands (collected by the Welsh Revenue Authority) with a £225,000 threshold and no first-time buyer relief. Always use the calculator that matches the country the property is actually in.

Q: How is stamp duty (LTT) paid in Wales?
A: Your solicitor files the LTT return and pays the tax to the Welsh Revenue Authority within 30 days of completion, usually collecting the funds from you alongside their own fees shortly before or at completion.

Q: Do I pay extra stamp duty on a second home in Wales?
A: Yes. Second homes, holiday lets, and buy-to-let purchases in Wales pay the higher residential LTT rates (5%–17%), which apply from the first pound of the purchase price rather than the £225,000 main-home threshold.

Use our free stamp duty calculator Wales tool above to work out your exact Land Transaction Tax bill — for a main home or a second home — with the full band-by-band steps shown, and compare it directly against the equivalent England SDLT charge. Updated for 2026 Welsh Revenue Authority rates. No account or download required.