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Capital Gains Tax Calculator

Estimate how much Capital Gains Tax you may owe when selling a property that is not your main home — including reliefs, allowances and deductible costs.

2024/25 and 2025/26 rates · Not financial advice · Consult a tax adviser for your specific situation
Sale Details
Cavendish Knight users typically pay £0 commission — enter legal fees only
Decorating and repairs do NOT count. Only structural improvements.
Your Tax Position
Salary, self-employment, rental income etc. Affects CGT rate band.
Reliefs & Exemptions
Private Residence Relief (PPR)
Was this ever your main home?
Use annual exempt amount
£3,000 (2025/26) tax-free per person
Transferring to spouse/civil partner
May use their exempt amount too
Estimated CGT Liability
£0
Effective rate: 0%
Sale price
Less purchase price
Less total costs
Less improvements
Total gain
Less PPR relief
Less annual exempt amount
Taxable gain
Tax band breakdown
18% (basic)
£0
24% (higher)
£0
📌 Key notes
CGT on UK residential property must be reported and paid within 60 days of completion using HMRC's online service.
Important: This calculator provides indicative estimates only and does not constitute tax advice. CGT rules are complex and individual circumstances vary. Rates shown are for residential property (not qualifying for Business Asset Disposal Relief). Always consult a qualified tax adviser or accountant before making decisions. HMRC is the authoritative source for current CGT rates and thresholds.