Understanding Capital Gains Tax on Property
Capital Gains Tax (CGT) is a topic that UK landlords must grapple with when selling property. It’s essential to understand what triggers CGT, how much you might owe, and whether any reliefs apply. The financial implications can be substantial, so early planning is crucial.
When Does Capital Gains Tax Apply?
CGT is payable when you sell (or ‘dispose of’) a property that has increased in value since you acquired it. For landlords, this typically means selling a buy-to-let property or a second home. The gain – not the total sale price – is what’s taxed. So, it’s the difference between the purchase price (plus certain allowable costs) and the selling price.
CGT does not usually apply to your main home due to Private Residence Relief, but if you rent out part of it or have used it for business purposes, tax may still be due on a portion of the gain.
Current CGT Rates and Allowances
The amount of CGT you pay depends on your overall income and the size of your gain. As of the 2023/24 tax year:
- Basic rate taxpayers pay 18% on residential property gains.
- Higher and additional rate taxpayers pay 28% on residential property gains.
Each individual also benefits from an annual CGT allowance – currently £6,000. This allows you to realise a small capital gain without any tax liability.
It’s worth noting that from April 2024, this allowance is set to reduce further, making it even more essential to plan your property sales strategically.
Reliefs and Deductions That Can Help
There are several reliefs and deductible expenses that can help landlords reduce their CGT liability:
- Private Residence Relief: If you lived in the property at any point, you may be eligible for partial relief.
- Letting Relief: Formerly a valuable deduction for landlords, Letting Relief is now only available under limited circumstances where the owner was in shared occupancy with the tenant.
- Costs of improvements: Expenditure on capital improvements (not maintenance) can be deducted.
- Legal and selling costs: Estate agent fees, solicitor charges, and stamp duty can also be factored in.
Effective use of these reliefs can significantly lower your taxable gain – but it’s important to maintain detailed accounts and supporting evidence.
Filing and Payment Deadlines
Landlords must report and pay any CGT due on UK residential property within 60 days of completion. Missing this deadline can lead to interest and penalties. You’ll need to use HMRC’s digital service, which requires registration if you haven’t used it before.
For disposals of non-residential UK property or if you’ve made a loss, different rules may apply, and reporting can be made through your Self Assessment.
Professional Guidance Can Save Time and Money
CGT is one of the more complex areas of UK tax law, with frequent updates to allowances and reliefs. Misunderstandings can lead to overpayment – or worse, underpayment and unexpected fines. A proactive approach can help you plan the sale of your property in the most tax-efficient manner.
Whether you’re looking to reduce your tax liability before disposing of a property or need help with accurate reporting, expert advice can be invaluable.
Take Control of Your Property Taxes
At DSR Ashburns Accountants, we specialise in helping landlords navigate the complexities of buy-to-let taxation. From calculating your gain to claiming all available reliefs, we ensure you stay compliant and make informed decisions. Get in touch with our team today to schedule a consultation and take control of your Capital Gains Tax exposure.

