UK House Buyout Calculator (Equity, Mortgage & Stamp Duty)

Use this UK House Buyout Calculator to estimate how much you may need to pay when buying someone out of a shared property. It factors in property value, mortgage balance, ownership share, transfer fees and possible stamp duty so you can get a clearer starting estimate before speaking to a solicitor or lender.

0% (Them 100%) 100% (Them 0%)
Divorce / Separation Agreement?
Estimated Buyout Payment
£74,450
Property Value£350,000
Outstanding Debt-£200,000
Net House Equity£148,900
Tax Estimate
Chargeable Consideration£174,450
Tax Due£0
Based on standard ENGLAND NI residential rates.
Total Cash Required
£75,550
Includes buyout, fees, and taxes.

How to Calculate a House Buyout in the UK

When a relationship ends or co-owners decide to part ways, one person often stays in the home while "buying out" the other. This process is legally known as a transfer of equity. To determine the fair payment, you must first establish the accurate market value and the remaining debt on the property.

Key Steps to Follow

  1. Get a professional RICS valuation of the property.
  2. Confirm your exact outstanding mortgage balance.
  3. Calculate the net equity (Value - Mortgage).
  4. Determine the percentage share entitlement of each party.
  5. Calculate the 'Chargeable Consideration' for tax purposes.
  6. Consult a solicitor to formalise the Transfer of Equity.

Common Glossary

  • Equity: The value of your home minus any debts secured against it.
  • Joint Tenants: Owners have equal rights; the property automatically passes to the other if one dies.
  • Tenants in Common: Owners can have unequal shares and leave their share to anyone in a will.

Frequently Asked Questions