Do you pay SDLT when a parent gifts a mortgaged house to an adult child?

Introduction

This is a common Stamp Duty Land Tax question. A parent may want to transfer a home to an adult child, often as part of wider family planning, while refinancing the property so that money can also be released for another family member. The transfer may be described as a gift, but SDLT does not depend only on whether money changes hands in the ordinary sense.

The key issue is whether the child is taking on mortgage debt or other chargeable consideration. A second issue is whether the higher rates for additional dwellings apply, especially where the child already owns a share in another property, including an inherited share.

The Question

A homeowner wants to transfer a dwelling to an adult daughter. The property is worth roughly £865,000 to £900,000 and is subject to an existing mortgage of about £190,000.

The plan is for the daughter to take the property in her sole name and arrange a new mortgage of about £430,000. That refinancing would be used to redeem the existing mortgage and release around £200,000, which the parent intends to give to a son to help with his own house purchase.

The family wants to know:

• whether SDLT applies if the transfer is intended as a gift;
• whether SDLT is charged on the mortgage debt taken on, or on the full market value of the property;
• whether the higher rates for additional dwellings apply if the daughter already has inherited shares in other residential properties; and
• whether completing within the three-year inherited-share window avoids the higher rates.

Nick’s Explanation

Nick’s core point was that a transfer described as a gift can still be chargeable for SDLT if the person receiving the property assumes responsibility for secured debt.

In anonymised form, his explanation was:

“Even where the transfer is described as a gift, SDLT can still apply if the person receiving the property assumes responsibility for a debt such as a mortgage. The assumption of debt counts as chargeable consideration for SDLT purposes.”

He also explained that the market value rule does not normally apply to a transfer from a parent to an adult child in these circumstances. In other words, the charge is not automatically based on the full value of the house simply because it is being transferred at undervalue or by way of gift.

On the higher rates issue, Nick noted that if the daughter personally owns another dwelling, or part of one, the higher rates under Schedule 4ZA may apply. However, inherited shares of 50% or less can be ignored for a limited period under paragraph 16 of Schedule 4ZA.

He confirmed that where the daughter had inherited one-third shares in two dwellings, those interests could be disregarded for three years from the relevant date of inheritance. If the transfer of the parent’s home completed before the end of that three-year period, and the daughter did not otherwise own another dwelling in her own name, the standard residential rates should apply rather than the higher rates.

The Law

SDLT is charged on land transactions by Finance Act 2003, section 42. A land transaction includes the acquisition of a chargeable interest in land: sections 43 and 48.

For SDLT, the tax is generally calculated by reference to “chargeable consideration”. Under Finance Act 2003, section 50, the assumption of existing debt can count as chargeable consideration. That is why a transfer can be taxable even if no purchase price is paid in cash.

The market value rule in Finance Act 2003, section 53 is limited. It applies in specific situations, including certain transactions involving companies connected with the vendor. It does not generally convert an ordinary transfer from a parent to an adult child into a market-value SDLT charge.

The higher rates for additional dwellings are contained in Schedule 4ZA to Finance Act 2003. Broadly, they apply where an individual buys a major interest in a dwelling and, at the end of the effective date, owns another major interest in another dwelling, unless an exception applies.

One important exception is paragraph 16 of Schedule 4ZA. This disregards inherited interests of 50% or less for a period of three years beginning with the date of inheritance when deciding whether the higher rates apply.

Analysis

The SDLT analysis can be broken down into four steps.

First, there is a land transaction. The daughter is acquiring ownership of the dwelling, so the transfer falls within the SDLT code.

Second, the fact that the transfer is called a gift does not end the matter. If the daughter takes the property subject to mortgage debt, or borrows as part of the same arrangement to redeem the parent’s secured borrowing, there is chargeable consideration.

Third, the market value of the property is not usually the SDLT base in this type of family transfer. On the facts given, the relevant question is the amount of chargeable consideration, not the open market value of the house.

Fourth, the rate applied to that consideration depends on whether the daughter counts as owning another dwelling at the relevant time.

On the figures discussed, the daughter’s new mortgage would be about £430,000. Nick treated that figure as the working assumption for chargeable consideration in the arrangement described. On that basis:

• if the standard residential rates apply, the SDLT would be £11,500 using the rate bands discussed in the correspondence;
• if the higher rates for additional dwellings apply, the SDLT would be £33,000 using the rate bands discussed in the correspondence.

There was a small arithmetic inconsistency in the original reply about the difference between those two totals. On those figures, the difference is £21,500.

The inherited-share point is especially important. If the daughter’s only other residential interests are inherited shares of 50% or less, paragraph 16 of Schedule 4ZA may disregard them for three years from the date of inheritance. If completion takes place within that period, those inherited shares do not trigger the higher rates. If completion is after that period ends, they may then count and the higher rates may apply, assuming the other conditions are met.

Whether a lender will allow the transfer to be structured as a full transfer into the daughter’s sole name is a separate conveyancing and mortgage underwriting question. SDLT analysis does not itself determine what the lender will or will not permit. If the lender requires the parent to remain on title or on the loan, that may affect the legal structure and should be checked carefully with the conveyancer and lender before completion.

Outcome

The practical answer is:

• SDLT can apply even though the transfer is intended as a gift.
• In this kind of parent-to-child transfer, SDLT is usually based on the chargeable consideration, such as mortgage debt assumed, rather than the full market value.
• If the daughter’s only other residential interests are inherited shares of 50% or less, those shares may be ignored for three years under paragraph 16 of Schedule 4ZA.
• If the transfer completes within that three-year period, the standard residential rates may apply instead of the higher rates, provided she does not otherwise own another dwelling in her own name.

Practical Steps

• Confirm the exact legal structure of the transfer with the conveyancer and lender. A lender’s requirements can affect who must remain on title and on the mortgage.
• Identify the actual SDLT consideration. In a refinancing case, this usually means checking exactly what debt is being assumed or discharged as part of the transaction.
• Review all other residential property interests held personally by the transferee, including small shares and inherited interests.
• Check whether any inherited share is 50% or less and whether completion will occur within the three-year period in paragraph 16 of Schedule 4ZA.
• Do not assume that company-owned properties count as personally owned dwellings for higher-rate purposes. The legal ownership position matters.
• Make sure the SDLT return reflects the correct consideration and the correct rate treatment at the effective date of the transaction.

Conclusion

A gifted transfer of a mortgaged home to an adult child is not automatically free of SDLT. If the child takes on mortgage debt, that debt can be chargeable consideration. In the scenario discussed, the key issue is not the property’s full market value but the amount of debt assumed and whether the child’s inherited shares in other dwellings are still within the three-year disregard in paragraph 16 of Schedule 4ZA.

Legal References Used

• Finance Act 2003, section 42
• Finance Act 2003, section 43
• Finance Act 2003, section 48
• Finance Act 2003, section 50
• Finance Act 2003, section 53
• Finance Act 2003, Schedule 4ZA
• Finance Act 2003, Schedule 4ZA, paragraph 16

This page was last updated on 22 March 2026.

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