How to Reduce Capital Gains Tax on a Rental Property — Legal Strategies for 2026

Why CGT Planning Matters for Landlords

Selling a rental property that has grown in value will typically result in a significant CGT bill. At 24% for higher rate taxpayers, on a gain of £150,000 the tax charge (after the £3,000 annual exempt amount) would be approximately £35,280. Planning in advance can legitimately reduce this — in some cases substantially.

None of the strategies below involve tax avoidance. They all use reliefs and rules that Parliament has specifically put in place. However, some require action well before the disposal date, so early planning is essential.

1. Use Both Spouses' Annual Exempt Amounts

Each individual has an annual exempt amount of **£3,000** for 2026/27. If you own the property jointly with your spouse or civil partner, each of you has your own exempt amount, giving a combined exemption of £6,000 before tax applies.

If the property is held in your sole name, consider transferring a share to your spouse before the sale. Transfers between spouses living together are on a "no gain, no loss" basis — no CGT arises on the transfer itself. Your spouse then owns a portion, uses their annual exempt amount on their share of the gain, and may also pay tax at a lower rate if they are a basic rate taxpayer.

This is one of the most straightforward and effective planning tools available.

2. Time the Disposal Around the Tax Year

The tax year runs from 6 April to 5 April. If you are close to the end of a tax year and are about to exchange contracts, consider whether delaying exchange (not just completion — CGT is triggered at exchange) until after 5 April would allow you to use two years' worth of annual exempt amounts.

Similarly, if you anticipate lower income in the following tax year — for example, due to retirement or a career break — waiting until then could mean a larger portion of the gain falls into the basic rate band, taxed at 18% rather than 24%.

3. Maximise Your Allowable Deductions

Many landlords underestimate the deductions available when calculating the gain. Ensure you have records for all of the following:

• **Purchase costs**: SDLT, legal fees, survey fees at the time of purchase
• **Capital improvement expenditure**: Genuine enhancements to the property (extensions, loft conversions, new kitchens that represent an improvement rather than replacement like-for-like)
• **Disposal costs**: Estate agent fees, legal fees, EPC and search costs paid by the seller

Routine maintenance and repairs are not deductible against CGT (though they may be deductible against rental income for Income Tax purposes). Keep meticulous records of improvement work — invoices, planning applications, and completion certificates.

4. Consider Selling in a Year of Lower Income

CGT rates are linked to Income Tax bands. The basic rate of CGT (18%) applies to gains that fall within your Income Tax basic rate band, and the higher rate (24%) applies to gains that exceed it.

If you have a year with lower than usual income — for example, following retirement, a period of unpaid leave, or a year with significant pension contributions — more of the gain may fall within the basic rate band and be taxed at 18% rather than 24%.

5. Spread Disposals Across Multiple Tax Years

If you own several properties, spreading disposals across different tax years allows you to use the annual exempt amount each year rather than having all the gains fall into a single year. Each £3,000 exemption used represents a saving of up to £720 for a higher rate taxpayer.

6. Pension Contributions and Charitable Gifts

Increasing your pension contributions in the year of disposal can effectively extend your basic rate band, causing more of the gain to be taxed at 18% rather than 24%. The rules are complex — particularly for higher earners subject to the tapered annual allowance — but for many landlords this is a meaningful lever.

Gifts of property to registered charities are exempt from CGT. If philanthropic giving is part of your plans, this can be highly tax-efficient.

7. Check Whether PRR Applies to Any Period

Even if the property has been a rental for many years, if you lived in it as your main home at any point, PRR will exempt the corresponding proportion of the gain plus the final nine months of ownership. Do not overlook this relief simply because the primary use has been as a rental.

Use Our Calculator

Our [Capital Gains Tax Calculator](/capital-gains-tax-calculator) lets you model these scenarios — enter your purchase price, sale price, qualifying PRR periods, and deductions to see how your liability changes under different planning approaches.