Gifting or Transferring Property Between Family Members: SDLT Implications

Gifting a property between family members is free of Stamp Duty Land Tax only when no chargeable consideration changes hands, and stamp duty for buy-to-let in 2026 becomes payable the moment the person receiving the property takes on a mortgage or pays anything for it. SDLT is charged on what the recipient gives, not on the property's value, so a pure gift with no money and no outstanding loan usually carries no SDLT at all. The trap is the mortgage: if the recipient takes over debt secured on the property, that debt is treated as payment, and for landlords it can drag in the higher rates surcharge too. Blue Tick Accountants, a Guildford-based UK tax advisory and accountancy practice, helps landlords transfer property within the family without walking into an avoidable tax bill. This guide explains when SDLT applies, how mortgages change the picture, and where the surcharge bites.

Key Takeaways

• Stamp Duty Land Tax is charged on the chargeable consideration given for a property, not on its market value, so a genuine gift with no money and no mortgage assumed is usually free of SDLT.
• If the person receiving the property takes on an outstanding mortgage, the amount of debt assumed counts as chargeable consideration and can trigger SDLT.
• The higher rates for additional dwellings surcharge is 5% in 2026/27, having risen from 3% on 31 October 2024, and applies on top of standard SDLT rates.
• Transfers between spouses or civil partners who live together are generally free of SDLT where no consideration passes, and the couple is treated as one unit for additional-property purposes.
• Gifting a rental property is still a disposal at market value for Capital Gains Tax, so a tax bill can arise even when no cash changes hands.
• SDLT applies in England and Northern Ireland only; Scotland charges Land and Buildings Transaction Tax and Wales charges Land Transaction Tax.

When does SDLT apply to a gifted property?

SDLT applies to a gifted property only when there is chargeable consideration, meaning something of value given in exchange for the transfer. A property given with genuinely nothing paid and no debt taken on has no chargeable consideration, so no SDLT is due, regardless of how much the property is worth. This is why a parent can, in principle, gift a mortgage-free rental flat to an adult child without an SDLT charge.

The point that catches landlords out is the definition of consideration. It is not limited to cash. If the recipient assumes responsibility for a mortgage, releases the giver from a debt, or provides anything else of value, HMRC treats that as payment. The transfer is then taxed as if the recipient had bought the property for the amount of debt taken on, and the standard rates and thresholds apply to that figure.

Transfers into a company follow different rules again, and our guide to transferring property into a company covers the stamp duty and capital gains consequences together.

How does a mortgage change the SDLT position?

A mortgage transforms a tax-free gift into a potentially taxable transaction, because taking on the outstanding loan is treated as chargeable consideration equal to the debt assumed. If a landlord transfers a buy-to-let with a £180,000 mortgage to a family member who becomes responsible for that borrowing, SDLT is calculated on £180,000, even though no cash is exchanged.

For a landlord or anyone who already owns another property, this is where the SDLT landlord surcharge matters. Because the transferred property is an additional dwelling for the recipient, the higher rates for additional dwellings apply to the full amount of consideration. In 2026/27 the standard residential rates start at 0% up to £125,000, but the additional-dwellings rates start at 5% from the first pound and rise from there. A modest mortgage can therefore produce a meaningful bill.

For a full overview of how these rates and reliefs fit together, see our guide to stamp duty land tax for landlords.

Worked example: transferring a mortgaged buy-to-let

The clearest way to see the effect is a worked example. Suppose a parent gifts a buy-to-let worth £300,000 to their adult child, who already owns their own home and takes over the outstanding £180,000 mortgage. No cash passes between them, but the £180,000 of debt assumed is the chargeable consideration.

Because the child already owns a property, the higher rates for additional dwellings apply. The SDLT is calculated as follows for 2026/27:

• On the first £125,000 at 5%: £6,250
• On the next £55,000 (from £125,000 to £180,000) at 7%: £3,850
• Total SDLT payable: £10,100

Had the same property been gifted with no mortgage and no money changing hands, the chargeable consideration would be nil and no SDLT would be due. The £10,100 bill exists purely because the child took on the £180,000 loan. This is the single most important point for landlords planning a family transfer: clear the mortgage first, or accept that the debt will be taxed.

Are transfers between spouses treated differently?

Transfers between spouses and civil partners are treated more favourably than gifts to other relatives. Where a property is transferred between spouses or civil partners who are living together and no consideration passes, the transfer is generally free of SDLT. Even where a mortgage is involved, transfers between spouses are usually outside the higher rates for additional dwellings, because a married couple is treated as a single unit for the purposes of counting properties.

This differs sharply from transfers to children, siblings, or parents, who are connected persons but not spouses, and who are each treated as separate owners. A gift to an adult child who already owns a home will attract the surcharge on any consideration, whereas an equivalent transfer between a husband and wife typically will not. The distinction makes spousal transfers a common and legitimate planning step, though the wider Capital Gains Tax and inheritance position should always be reviewed alongside SDLT before acting.

Frequently Asked Questions

Do you pay stamp duty when property is gifted to a family member?

You do not pay Stamp Duty Land Tax on a gifted property if no money changes hands and the recipient does not take on a mortgage, because there is no chargeable consideration. SDLT becomes payable if the recipient assumes an outstanding mortgage or pays anything for the property, in which case the amount involved is taxed.

Does the buy-to-let surcharge apply to gifted property?

Yes, the higher rates for additional dwellings can apply to gifted property. If the person receiving the property already owns another home and takes on a mortgage, the 5% surcharge applies on top of standard rates to the debt they assume. A genuine gift with no mortgage and no payment has no consideration, so no surcharge arises.

How much is the SDLT surcharge for landlords in 2026?

The higher rates for additional dwellings surcharge is 5% in 2026/27. It rose from 3% to 5% on 31 October 2024 and is added to each standard SDLT band, so additional-property rates run from 5% up to £125,000 to 17% above £1.5 million. It applies to most buy-to-let and second-property purchases and transfers with consideration.

Is there Capital Gains Tax when you gift a rental property?

Yes, gifting a rental property is a disposal at market value for Capital Gains Tax, even though no cash is received. The person giving the property may owe CGT on the gain since they acquired it. SDLT and CGT are separate taxes, so a family transfer can create a CGT bill even where no SDLT is due.

Does SDLT apply to property in Scotland or Wales?

No. SDLT applies only to property in England and Northern Ireland. Scotland charges Land and Buildings Transaction Tax and Wales charges Land Transaction Tax, each with its own rates, bands, and additional-dwelling supplements. A landlord transferring property in those nations should check the equivalent local rules rather than SDLT.

How Blue Tick Can Help

Blue Tick Accountants helps landlords structure family property transfers so that SDLT, the additional-dwellings surcharge, and Capital Gains Tax are all considered before anything is signed. Blue Tick calculates the true cost of a transfer, including how any mortgage will be taxed, and identifies whether a spousal transfer or clearing the loan first produces a better outcome. Head to our website and book a meeting now.

Conclusion

The SDLT position on a family property transfer turns almost entirely on whether the recipient takes on a mortgage. A clean gift with no debt and no payment is usually free of SDLT, while assuming a loan can trigger the higher rates surcharge and a real bill. Before transferring any rental property to a relative, work out the chargeable consideration, check the surcharge, and remember that Capital Gains Tax runs alongside SDLT. Get the numbers right first, then act.

About the Author

This guide was written by Leon, founder of Blue Tick Accountants, a Guildford-based UK tax advisory and accountancy practice that helps landlords, limited company owners and the self-employed across the UK. It was last reviewed for the 2026/27 tax year.

This article is intended for general informational purposes only and does not constitute tax, legal, or financial advice. Tax rules are subject to change and their application will depend on your individual circumstances. You should always seek advice from a qualified professional before taking action. Blue Tick Accountants accepts no liability for decisions made on the basis of this content.