Property tax
What Are the Tax Implications of Buying a House Before Selling?
If you buy a new home before selling your current one, you’ll usually pay the higher-rate (additional property) stamp duty surcharge on the purchase, because you briefly own two homes. The good news: if you sell your previous main residence within 36 months, you can reclaim the surcharge from HMRC. Bridging finance and timing also affect your costs — plan carefully.
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The stamp duty surcharge
Buying an additional property triggers the higher SDLT rates (a surcharge above standard rates) because you own two homes on completion day. This applies even though the second home is replacing your main residence — you pay first, reclaim later.
The 36-month refund
Sell your former main home within 36 months of the new purchase and you can apply to HMRC for a refund of the surcharge. Keep the dates and paperwork tight, and claim within the deadline.
Cashflow and bridging
Owning two homes means two sets of running costs and possibly bridging finance interest until you sell. To avoid all of this, sell first — a fast cash sale can free you to buy chain-free. Take advice; see breaking the chain.
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Written & reviewed by Lisa Hayes, Founder
Lisa Hayes is the founder of Ready Steady Sell and an independent UK home-selling expert with over a decade helping homeowners weigh cash house buyers, property investors and the wider fast house-sale industry — without pressure or hidden fees. Every guide is reviewed for accuracy under our editorial standards.
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Frequently asked questions
Straight answers, no sales talk
Do I pay extra stamp duty if I buy before selling?
Yes — the higher-rate (additional property) surcharge applies because you own two homes on completion. You can reclaim it from HMRC if you sell your previous main residence within 36 months.
Can I get the stamp duty surcharge refunded?
Yes, if you sell your former main home within 36 months of buying the new one. Apply to HMRC within the deadline with the relevant dates and details.