Do parents pay SDLT on the amount they pay now or on the original purchase and renovation cost?

Introduction

A common SDLT question arises where a property was originally bought in one family member’s sole name, but other family members helped fund the purchase and later want to buy the property themselves. People often ask whether SDLT is charged on the current amount being paid for the transfer, or on the earlier purchase price, renovation spend, or total money that has gone into the property.

In most cases, SDLT is charged on the chargeable consideration given for the transaction taking place now. That means the starting point is usually the amount actually being paid for the transfer, not the historic cost of buying and improving the property. But the detail matters, especially if earlier family contributions gave someone a beneficial interest or if mortgage debt is being taken over.

The Question

A homeowner bought a property in their sole name to renovate. Part of the original purchase money came from the homeowner’s parents, and the rest came from the homeowner’s own funds and borrowing. Later, the parents wanted to buy the property from the homeowner for a lower figure than the original purchase price plus renovation costs. The mortgage had since been paid off using further gifted funds, and the property remained in the homeowner’s sole legal ownership.

The question was whether SDLT would be charged on:

• the amount the parents are now paying to acquire the property, or
• the original purchase price and refurbishment costs combined.

Nick’s Explanation

Nick’s core point was that SDLT is charged on the “chargeable consideration” given for the transaction now being carried out. In this scenario, if the parents are buying the property for £230,000 and there is no mortgage being assumed and no other consideration passing, SDLT is based on £230,000.

As Nick explained in substance, the earlier family contribution does not itself alter the SDLT calculation for the later sale, provided it was genuinely a gift and did not give the parents a beneficial interest in the property from the outset.

He also noted that where the buyers are acquiring the property as their only property and main residence, the standard residential SDLT rates apply rather than the higher rates for additional dwellings.

On the figures given, Nick calculated SDLT by applying the standard residential rates to £230,000, producing SDLT of £2,100.

The Law

SDLT is charged under the Finance Act 2003 on land transactions involving chargeable interests. The key concept here is “chargeable consideration”. Broadly, SDLT is charged by reference to what the buyer gives for the property.

This usually includes:

• cash paid for the property,
• debt taken on by the buyer, including mortgage debt in some cases, and
• certain other forms of money or money’s worth given in exchange for the transfer.

It does not usually include:

• historic amounts previously spent on the property by the seller,
• renovation costs incurred before the current transaction, or
• earlier gifts to the seller, unless those arrangements mean the buyer already had rights or interests affecting the true nature of the transaction.

Where a dwelling is being acquired, the applicable SDLT rates depend on the nature of the property and the buyer’s circumstances at the effective date of the transaction. If the buyers are replacing their only or main residence and do not own another dwelling that triggers the surcharge rules, the standard residential rates generally apply.

Analysis

The practical analysis is as follows.

1. Identify the transaction taking place now. The current transaction is a sale by the homeowner to the parents.

2. Identify the consideration for that transaction. On the facts given, the parents are paying £230,000 for the property.

3. Check whether any mortgage debt is being assumed. Here, the mortgage has already been paid off, so there is no mortgage debt being taken over by the parents as part of the purchase.

4. Check whether the earlier parental contribution created a beneficial interest. If the earlier £200,000 was simply a gift to the homeowner, and the parents did not acquire any beneficial ownership at that time, that earlier payment does not become chargeable consideration for the later sale.

5. Ignore historic project costs unless they form part of the current bargain. The original purchase price and the refurbishment costs may explain why the seller wants £230,000, but they do not themselves set the SDLT consideration for the current transfer.

6. Apply the correct SDLT rates to the actual consideration now being given. On a purchase price of £230,000, and assuming standard residential rates apply, SDLT is calculated on £230,000.

Using the figures provided:

• £0 to £125,000 at 0% = £0
• £125,001 to £230,000 at 2% = £2,100

Total SDLT: £2,100.

The main point of caution is the beneficial interest issue. If the parents’ original contribution was not a true gift, and instead reflected an agreement that they already owned part of the property beneficially, the legal analysis could be different. In that kind of case, the transaction might not simply be a sale of the whole property for £230,000 by one sole beneficial owner to entirely new owners. The underlying ownership position would need to be examined carefully.

Outcome

On the facts described, SDLT is charged on £230,000, not on the original purchase price and renovation costs of £430,000.

That is because the relevant transaction is the present sale to the parents, and the chargeable consideration for that sale is the £230,000 they are paying now, assuming:

• the homeowner is the sole legal and beneficial owner before the sale,
• the earlier parental funding was a genuine gift,
• there is no mortgage being assumed, and
• no other consideration is being given.

Practical Steps

If you are assessing a similar SDLT position, work through the following points:

1. Confirm who owns the property legally and beneficially before the transfer. The title register alone may not answer the beneficial ownership question if family money was used.

2. Check whether earlier family contributions were outright gifts or whether there was any agreement, written or unwritten, that the contributors would own part of the property.

3. Confirm whether any mortgage remains and whether the buyer will take responsibility for any part of it.

4. Identify all forms of consideration being given now, not just cash. SDLT can include debt assumption and other value passing under the transaction.

5. Check whether the buyers will own more than one dwelling at completion and whether the higher rates for additional dwellings could apply.

6. Keep evidence showing the nature of any earlier gifts, such as correspondence and conveyancing records, in case the beneficial ownership position is ever questioned.

Conclusion

Where parents later buy a property from their child, SDLT is usually based on what they pay for that purchase now, not on the child’s original purchase price or renovation costs. In the scenario described, the taxable consideration is £230,000, so SDLT is calculated on that amount, provided the earlier parental funding was only a gift and did not give them a prior beneficial interest.

Legal References Used

• Finance Act 2003
• Finance Act 2003, SDLT provisions on chargeable consideration
• Standard residential SDLT rate structure applicable to dwellings

This page was last updated on 22 March 2026.

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