The Welsh Land Transaction Tax return due even when no tax is owed

Reacting to

Land Transaction Tax returns and payments: technical guidance (Welsh Revenue Authority, gov.wales, updated 26 November 2024)

Every Welsh property transaction above a small threshold has to be reported to the Welsh Revenue Authority, whether or not it ends up owing any Land Transaction Tax. The guidance setting out exactly when a return is needed, and what still has to be filed when the tax due comes to nothing, was last updated on 26 November 2024. The cash behind that transaction, a deposit leaving a client's personal or company funds, shows up in the accounts or the self-assessment return an accountant is already preparing.

What the guidance confirms

The Welsh Revenue Authority's technical guidance sets out three figures that decide what has to happen after a Welsh property purchase, and by when.

£40,000

the chargeable consideration below which a transaction is not notifiable, and no return is needed at all.

30 days

the period, beginning the day after completion, within which a notifiable transaction's return must reach the Welsh Revenue Authority.

£100

the fixed penalty for filing after that deadline, charged whether or not any tax is due.

Welsh Revenue Authority, Land Transaction Tax returns and payments: technical guidance (updated 26 November 2024); Tax penalties: filing or paying late (gov.wales)

A purchase priced below the £225,000 main residential nil-rate band is not automatically outside these rules. The nil-rate band decides how much tax is due; the £40,000 notifiable-transaction threshold decides whether a return has to be filed in the first place. A main residence bought for £210,000 owes no tax under the main residential rates, but it is still notifiable, so a return showing a self-assessment of £0.00 has to reach the Welsh Revenue Authority within 30 days of completion, in the same way as a return with tax to pay.

Where this shows up in the file

A client who has bought a home, a second home or a buy-to-let property in Wales has moved cash: a deposit from personal savings, from a director's loan account, or straight from company funds. That movement is already visible in the bank statements and the completion statement behind the accounts or the self-assessment return the firm prepares. None of it depends on Companies House or on any register; it is simply what paying for a property looks like in the file.

A second property can be bought by a company instead of by the director personally. Either way it carries its own point to check: whether it sits inside the company for a business reason or is simply somewhere for surplus cash to go. Surplus cash held in a client's company sets out what that looks like.

Welsh Revenue Authority, Land Transaction Tax returns and payments: technical guidance, updated 26 November 2024: “Where the consideration given for the subject matter of the transaction is less than the starting threshold for the first rate of tax above 0%, a self assessment is still required even though the amount of that self assessment will be £0.00.”

A worked example

This example uses a made-up client and made-up figures.

A company director buys a second property in Cardiff as a buy-to-let, completing in November 2026 at £200,000. Because it is an additional property, the higher residential rates apply to the whole price from the first pound. The £225,000 nil-rate band used for a main residence plays no part in it. The first £180,000 is taxed at 5%, and the remaining £20,000 at 8.5%.

The buy-to-let purchase

Made-up client and made-up figures

Purchase price£200,000

Deposit paid from personal funds£50,000

Mortgage advance£150,000

LTT at 5% on the first £180,000£9,000

LTT at 8.5% on the remaining £20,000£1,700

Land Transaction Tax due£10,700

The return showing that £10,700 has to reach the Welsh Revenue Authority within 30 days of completion, the same deadline that would apply if the purchase were a main residence owing nothing at all. The £50,000 deposit has left the director’s personal funds; whether that was the best use of it, measured against pensions, protection or anything else the director holds, is not something the Land Transaction Tax return answers.

Accountancy work

Seeing a deposit leave a client’s personal or company funds for a Welsh property purchase, and knowing a Land Transaction Tax return will have been required within 30 days of completion, is professional reading of the file the firm already prepares.

Regulated advice

Working out whether that cash was the right one to use, measured against the client’s pensions, protection and other savings, sits with the Equity & General financial planner.

The division between the two is set out in who does what.

Two checks to run this week

List clients who completed a Welsh property purchase this year. For each one, personal or through a company, confirm the chargeable consideration before assuming no return was needed. The £40,000 notifiable threshold decides that; the £225,000 nil-rate band plays no part in it.
Check which rate table applied. Where the purchase was a second home, a buy-to-let or a company purchase, confirm the higher residential rates were applied to the whole price above £225,000, and to the amount below it too.

What is not yet settled

The £40,000 notifiable-transaction threshold has not changed since Land Transaction Tax began on 1 April 2018, and the Welsh Government’s Draft Budget 2026-27 confirmed no change to either rates table for the year. Both tables are reviewed as part of each year’s Welsh Budget, most recently the higher residential rates on 11 December 2024, so a future Budget could move them again; no further change has been announced beyond the figures confirmed for 2026/27.

Common questions

Does a Land Transaction Tax return have to be filed when no tax is due?

Yes, in most cases. The Welsh Revenue Authority’s technical guidance on Land Transaction Tax returns and payments, updated 26 November 2024, states that where the consideration for a transaction is less than the starting threshold for the first rate of tax above 0%, a self-assessment is still required even though the amount of that self-assessment will be £0.00. A purchase priced under the £225,000 nil-rate band for a main residence still needs a return, because the return is what tells the Welsh Revenue Authority the tax due is nil; it does not establish that on its own. The only transactions that fall outside the rule altogether are those below the £40,000 notifiable-transaction threshold, or those within one of the small number of exempt categories such as a transfer on divorce or under a will.

What counts as a notifiable transaction in Wales?

A land transaction in Wales is notifiable, and needs a return, unless the chargeable consideration, including any consideration for linked transactions, is less than £40,000. This threshold has applied since Land Transaction Tax replaced Stamp Duty Land Tax in Wales on 1 April 2018, under the Land Transaction Tax and Anti-avoidance of Devolved Taxes (Wales) Act 2017, and has not changed since. A small number of transactions are exempt regardless of price, including a property left under a will with nothing paid for it and a transfer following a divorce or the dissolution of a civil partnership; the Welsh Revenue Authority’s guidance sets out the rest. A purchase of a home, a second home or an investment property in Wales priced above £40,000 is notifiable, aside from that small list of exemptions, whatever rate of tax ends up being due.

What happens if the return is filed late?

The Welsh Revenue Authority charges a £100 fixed penalty for filing a Land Transaction Tax return after the 30-day deadline, whether or not any tax is due. If the return is still outstanding six months after the deadline, a further penalty of £300 or 5% of any unpaid tax, whichever is greater, is added, and the same again at 12 months. Daily interest runs on any unpaid tax throughout. The £100 fixed penalty is tied to the return itself, so it applies in full to a purchase that owes no Land Transaction Tax at all, such as a main residence bought below the £225,000 nil-rate threshold, provided the price is above the £40,000 notifiable-transaction threshold.

Do the higher residential rates apply to the whole price or only the amount above £225,000?

To the whole price, from the first pound. The £225,000 nil-rate band only applies to the main residential rates; the higher residential rates, which apply to a second home, a buy-to-let or a property bought by a company, use a separate set of bands starting at 5% on the first £180,000 and rising to 8.5% up to £250,000 and further above that, confirmed by the Welsh Government with effect from 11 December 2024. A property priced well inside the main nil-rate band can still carry a substantial Land Transaction Tax bill once it is an additional property, because none of the purchase price is taxed at 0% under those rates.

Why does a Welsh property purchase matter for financial planning, and not only for the Land Transaction Tax return?

Because the deposit behind a property purchase is cash that has left the client’s personal or company funds, and it shows up in the accounts or the self-assessment return the firm already prepares. The FCA’s Financial Lives 2024 survey found that 8.6% of UK adults, and 13% of self-employed adults, had received regulated financial advice in the previous twelve months. A large deposit leaving a client’s funds is a reason to ask the client whether that conversation has happened. Raising it with the client, and offering an introduction to the Equity & General financial planner, is within what the firm can do; deciding whether the purchase was the right use of the cash is a question for the financial planner.