Joint Purchase with a Non-First-Time Buyer
What happens to first-time buyer stamp duty relief when one joint buyer has previously owned property — and what your options are.
In this article
Key Takeaways
- ALL joint purchasers must individually qualify as first-time buyers — one disqualified buyer eliminates relief for the entire transaction
- HMRC guidance is unambiguous: "you and anyone else you're buying with are first-time buyers"
- There is no partial FTB relief based on ownership share — relief is all-or-nothing for the transaction
- Marriage and civil partnership make no difference: one partner's prior ownership disqualifies both from FTB relief
- The worldwide property rule applies in joint purchases: overseas ownership by either buyer disqualifies the transaction
- A sole purchase in the qualifying buyer's name is the main practical option — but requires lender approval and legal advice
- On a £400,000 joint purchase with one non-FTB, the loss of FTB relief costs exactly £5,000 in extra SDLT
- Buying solely in one name when both contribute financially creates beneficial ownership complications — always get legal advice
The All-or-Nothing Rule
First-time buyer stamp duty relief operates on an all-or-nothing basis when it comes to joint purchases. The relief applies to the transaction as a whole, not to individual buyers based on their ownership share. This means:
- If you buy jointly and both buyers are genuine first-time buyers, the full relief applies
- If you buy jointly and any buyer does not qualify, no relief is available — for either buyer
There is no mechanism to claim FTB relief on just the qualifying buyer's share. The 50% or 30% contribution of the first-time buyer does not entitle them to partial relief.
This is one of the most costly misunderstandings in property buying
Many buyers assume that because one person is a genuine FTB, some relief applies. It does not. The transaction fails the eligibility test entirely if even one buyer has previously owned property.
What HMRC Says
The wording of the GOV.UK — First-time buyers guidance is explicit: to qualify for FTB relief, “you and anyone else you're buying with are first-time buyers.”
The detailed SDLT relief for first time buyers guidance reinforces this: “All purchasers must meet the definition of a first-time buyer.” There is no provision for shared or partial relief.
This applies equally to couples, friends buying together, siblings co-purchasing, or any other joint purchase arrangement. The number of buyers and the reason for the co-purchase are irrelevant.
No Partial Relief
Some buyers ask whether they could receive a proportional benefit — for example, if one of two joint buyers qualifies, receiving 50% of the relief. This is not available under current SDLT rules.
SDLT is assessed on the transaction as a whole. The tax is not split proportionally between buyers by their ownership share. As a result, the eligibility test applies to the transaction — and if the transaction includes a non-FTB buyer, no relief is available.
Compare this to the FTB vs standard rates comparison, which illustrates the full relief value at different price points.
Marriage and Civil Partnership
Married couples and civil partners are treated exactly the same as any other joint buyers under SDLT rules. There is no special provision that allows a spouse who is a genuine FTB to access the relief despite their partner's prior ownership.
A common scenario: one partner is buying their first home and has never owned property. Their spouse previously owned a home that they sold before the marriage. Under SDLT rules, this transaction is treated as a joint purchase by a mixed-status pair, and no FTB relief is available.
Similarly, if one civil partner has previously owned property, the other civil partner cannot claim FTB relief on a joint purchase. For married couple-specific property questions, see our guide on married couple property rules.
Overseas Ownership in Joint Purchases
The worldwide property rule applies with equal force in joint purchases. If your co-buyer has ever owned a residential property anywhere in the world — even if now sold — the joint transaction loses FTB relief.
This catches many international buyers off guard. A common scenario: a British buyer purchasing with a partner who previously owned property in their home country. Even though the partner has never owned property in the UK, their overseas ownership history eliminates FTB relief on the joint purchase.
The Financial Cost of Mixed Status
The maximum saving from FTB relief is £5,000 (at a purchase price of £500,000). In practice, the cost of having one non-FTB joint buyer depends on the purchase price:
| Purchase Price | SDLT (both FTB) | SDLT (standard) | Cost of Mixed Status |
|---|---|---|---|
| £200,000 | £0 | £1,500 | £1,500 |
| £250,000 | £0 | £2,500 | £2,500 |
| £300,000 | £0 | £5,000 | £5,000 |
| £350,000 | £2,500 | £7,500 | £5,000 |
| £400,000 | £5,000 | £10,000 | £5,000 |
| £450,000 | £7,500 | £12,500 | £5,000 |
| £500,000 | £10,000 | £15,000 | £5,000 |
| £550,000 | £17,500* | £17,500 | £0 (no relief above £500k) |
*At £550,000, no FTB relief applies — standard rates shown. Standard rates from April 2025.
Worked Examples
Example 1: Couple buying at £350,000 — one FTB, one not
Buyer A: genuine first-time buyer
Buyer B: previously owned a flat (now sold)
Purchase price: £350,000
SDLT (if both FTB): £0 on £300k + £2,500 on £50k = £2,500
SDLT (standard, joint purchase): £0 + £2,500 + £5,000 = £7,500
Cost of Buyer B's prior ownership: £5,000 extra SDLT
Example 2: Sole purchase — FTB buyer alone at £350,000
Buyer A purchases in their name only
Purchase price: £350,000
SDLT (FTB sole): £0 on £300k + £2,500 on £50k = £2,500
Saving vs joint standard rate: £5,000
But: mortgage likely needs to be in Buyer A's name only, affecting borrowing capacity
The Sole Purchase Option
The only way to preserve FTB relief when one co-buyer does not qualify is for the qualifying buyer to purchase solely in their own name. This means the legal title is registered at HM Land Registry in the FTB's name only, and — critically — only the FTB's name appears on the SDLT return.
This approach can work in practice, but it requires careful planning:
- The qualifying buyer must individually satisfy all FTB criteria
- The mortgage must be in the sole buyer's name (lenders assess affordability on one income)
- Any financial contribution from the non-FTB partner needs to be structured carefully
- A declaration of trust or cohabitation agreement is highly advisable to protect both parties' financial interests
SDLT: worth it only at certain price points
The maximum SDLT saving from FTB relief is £5,000. If a sole purchase means a materially worse mortgage rate or significantly reduced borrowing, the savings may be outweighed by higher financing costs. Run the numbers carefully.
Legal Risks of Sole Purchase
Buying in one name when both parties contribute financially is legally complex. If the non-owning partner contributes to the deposit, mortgage payments, or renovations without formal legal protection, they may have difficulty establishing their financial interest if the relationship breaks down.
Key legal documents to consider:
- Declaration of trust: Records each party's beneficial ownership share, protecting the non-legal-owner
- Cohabitation agreement: Sets out financial arrangements, property ownership, and what happens if the relationship ends
- Mirror wills: Ensures the non-legal-owner inherits the property if the legal owner dies
According to MoneyHelper — Stamp Duty, it is strongly advisable to take legal advice before structuring a purchase in one name for SDLT purposes. The legal costs of proper documentation are typically far less than the £5,000 SDLT saving.
Mortgage Implications
Purchasing solely in one name typically means the mortgage can only be in that name. This directly affects borrowing capacity, since lenders assess affordability based on income (typically 4-4.5x salary).
Some lenders do offer “Joint Borrower Sole Proprietor” (JBSP) mortgages, which allow a second person to be on the mortgage for income assessment purposes while remaining off the property title. In this structure:
- Both parties are jointly responsible for the mortgage debt
- Only the qualifying FTB holds legal title
- The non-FTB's income counts toward affordability without them being a property owner
- SDLT is assessed solely on the title holder's status — meaning FTB relief may still apply
JBSP mortgages are not universally offered and come with their own considerations. A specialist mortgage broker can advise on availability and suitability.
Common Scenarios Table
| Scenario | FTB Relief? | Options |
|---|---|---|
| Both buyers never owned property | Yes (full) | Proceed as planned |
| One buyer owned UK property, now sold | No | Sole purchase in FTB's name; or JBSP mortgage |
| One buyer inherited overseas property | No | Sole purchase; or accept standard SDLT rates |
| Married couple — one spouse owned before marriage | No | Sole purchase in qualifying spouse's name only |
| Three buyers, one not FTB | No | Remove non-FTB from the purchase |
| Price above £500,000 (any status) | No | No relief available regardless of FTB status |
Frequently Asked Questions
Do both buyers need to be first-time buyers for joint purchase FTB relief?
Yes. HMRC rules are explicit: "you and anyone else you're buying with are first-time buyers." Every person named on the purchase must individually satisfy the first-time buyer definition. If any one buyer does not qualify, the entire transaction loses FTB relief.
Can I get partial FTB relief if only one of two buyers qualifies?
No. There is no partial FTB relief based on ownership share. FTB relief is all-or-nothing for the transaction as a whole. If one buyer does not qualify, no relief is available regardless of the ownership split.
Can we buy in one name only to preserve FTB relief?
Yes, but only if the sole buyer individually qualifies as a first-time buyer and meets lender requirements for a sole mortgage application. Buying in one name when both partners contribute financially raises legal issues around beneficial ownership and should always be done with proper legal advice.
Does marriage or civil partnership change the FTB joint purchase rules?
No. Married couples and civil partners are treated the same as any other joint buyers. If one spouse or partner has previously owned property, the other spouse cannot claim FTB relief on a joint purchase, regardless of marital status.
My partner owned a property abroad — does this affect our joint purchase?
Yes. The worldwide property rule applies equally in joint purchases. If your partner has ever owned a residential property anywhere in the world, your joint purchase loses FTB relief entirely.
For related questions, see do married couples pay more stamp duty? and our complete FTB guide.
Sources
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Emma Richardson, MRICS
Chartered Surveyor & Property Tax Specialist
Emma Richardson is a RICS-qualified Chartered Surveyor with over 12 years of experience in UK property taxation. She founded Stamp Duty Calculator to help buyers understand the complex world of property transaction taxes.