LTT on second homes and buy-to-let in Cardiff: the higher rates explained
Quick answer: If you already own a residential property anywhere in the world and you're buying another one in Cardiff or anywhere else in Wales — a second home, a holiday let, or a buy-to-let — you'll usually pay Land Transaction Tax's higher residential rates, not the main rates that apply to a straightforward home purchase. The higher rates add a flat percentage on top of the main-rate bands at every price point, and the gap is substantial: on a typical £260,000 purchase, the higher rates work out at roughly £15,950 in LTT versus around £2,100 at the main rate on the same price. This guide sets out the current higher-rate bands, worked examples at typical Cardiff prices, and the situations — replacing your main home, buying jointly, moving between England and Wales — that change whether the surcharge applies at all.
When the higher rates apply
The higher residential rates apply where, at the point your purchase completes, you already own a residential property (anywhere in the world, not just in the UK) worth £40,000 or more, and the property you're buying isn't replacing your only or main residence. This catches:
- Buying a second home while keeping your existing main residence.
- Buying a buy-to-let property, whether as an individual, jointly, or through a company.
- Buying a holiday let.
It generally does not apply if you're selling your only home and buying a new one to live in as your main residence, even if there's a short overlap where you technically own both — though the timing rules around this (covered below) matter and are worth getting right.
The higher-rate bands, in full
These are the current Land Transaction Tax higher residential rates, which apply where contracts exchanged on or after 11 December 2024:
| Price band | Higher LTT rate |
|---|---|
| Up to £180,000 | 5% |
| £180,001 – £250,000 | 8.5% |
| £250,001 – £400,000 | 10% |
| £400,001 – £750,000 | 12.5% |
| £750,001 – £1,500,000 | 15% |
| Over £1,500,000 | 17% |
Notice there's no 0% band at all under the higher rates — unlike the main residential rates (which have a nil-rate band up to £225,000), every pound of a second home or buy-to-let purchase is taxed from the first pound. This is the single biggest structural difference from buying your only home, and it's the detail that catches out buyers who mentally price in the main-rate nil band before realising it doesn't apply to their purchase. Our LTT vs stamp duty guide covers the main residential rates and bands in full if you want the direct comparison.
Worked examples at typical Cardiff prices
| Purchase price | How it's taxed | Higher-rate LTT due |
|---|---|---|
| £180,000 | Fully within the 5% band | £9,000 |
| £260,000 | 5% on £180,000 + 8.5% on £70,000 + 10% on £10,000 | £15,950 |
| £325,000 | 5% on £180,000 + 8.5% on £70,000 + 10% on £75,000 | £22,450 |
Compare that £260,000 example against the same price at the main residential rate — £2,100, since £225,000 is untaxed and only the remaining £35,000 is taxed at 6% — and the gap is stark: roughly £13,850 more in LTT purely because the purchase is a second home or buy-to-let rather than a main residence. That gap is worth budgeting for from the very start of a purchase, not discovering at your solicitor's completion statement. A Cathays or Roath terrace bought as a buy-to-let or HMO — see our buy-to-let and HMO guide for Cathays and Roath — would be taxed under these same higher rates, on top of the licensing and planning considerations covered there.
Replacing your main home: when the higher rates don't apply
If you're selling your only or main home and buying a new one to live in, the higher rates generally don't apply, even though you technically owned two properties for a period around completion — Land Transaction Tax treats this as replacing your main residence, not acquiring an additional one. The complication is timing: the test looks at what you own at the point your new purchase completes, not at what you eventually end up owning. If your old home hasn't sold by the time your new purchase completes, you may be charged the higher rates initially, on the basis that you technically owned two properties at that moment — with a refund available if you sell your previous main residence within the usual window afterwards. Confirm the current refund window and its conditions with your conveyancer before completion, since getting the sequencing wrong (or missing the refund deadline) can mean paying the higher rate permanently on a purchase that was never really a "second home" in substance.
Buying jointly
Land Transaction Tax is assessed on the property as a whole, not per buyer — so buying with two names on the deeds doesn't split or reduce the tax bill. What matters for the higher-rates test is whether either buyer already owns another residential property: if one joint buyer owns a home already and the other is a genuine first-time buyer, the higher rates can still apply to the whole purchase, because the test looks at the buyers collectively, not individually. This is worth knowing before assuming a joint purchase with a first-time buyer automatically avoids the surcharge — it doesn't, if the other party already owns property anywhere.
Moving between England and Wales
Because LTT and SDLT are entirely separate tax systems, owning a property in England doesn't exempt you from LTT's higher rates on a Welsh purchase, and vice versa — the £40,000 ownership test looks at property owned anywhere in the world, not just in Wales. If you're relocating to Cardiff and buying here while still owning (even temporarily) a home elsewhere, budget for the higher rates applying unless and until the "replacing main residence" exception and its timing rules are satisfied. See our moving to Cardiff areas and prices guide if you're weighing up areas as part of a relocation, since the LTT bill is one more number worth having settled early in that planning.
Companies and trusts
Buy-to-let and HMO purchases made through a limited company are also generally subject to the higher residential rates, in most cases regardless of whether it's the company's first property purchase — companies don't get the benefit of the main-rate nil band the way an individual buying their only home does. Trusts can also be caught by the higher rates depending on the type of trust and how the beneficiaries' property ownership is treated — this is a genuinely fact-specific area, so get a conveyancer's confirmation for your specific company or trust structure rather than assuming either way.
FAQ
Is there any nil-rate band under the higher LTT rates?
No — unlike the main residential rates, the higher rates start taxing from the very first pound of the purchase price, at 5%. There's no equivalent to the main rates' £225,000 nil band.
Do I pay the higher rate if I'm selling my only home but haven't completed the sale yet?
Possibly, temporarily — the test looks at what you own at the point your new purchase completes. If your old home is still unsold at that point, the higher rate may apply initially, with a refund available once you sell within the usual window. Confirm the current window and conditions with your conveyancer.
Does buying through a limited company avoid the higher rates?
No — company purchases are generally still subject to the higher residential rates, in most cases regardless of how many other properties the company already owns.
Capital Mortgage Advice opens its full advice service in September 2026 — until then, this guide is for information only, not tax advice and not a recommendation about any specific purchase or lender. Join the launch list to hear when advice goes live.
Higher LTT rates and bands checked directly against gov.wales in July 2026 (rates effective for contracts exchanged on or after 11 December 2024). Rates, bands and reliefs are set by the Welsh Government and can change at future budgets — always confirm current rates on gov.wales, or with your conveyancer, before exchanging contracts. This guide is information, not financial or tax advice.