| Property | Purchase (£) | Costs (£) | Sale Price (£) | Tax Year | CGT Rate | Gain (£) |
|---|
| Tax Year | Properties | Total Gain | Exempt Amount | Taxable Gain | CGT Due |
|---|---|---|---|---|---|
| Enter your properties above | |||||
Planning Tax-Efficient Property Portfolio Disposal
Disposing of a UK property portfolio is rarely a single-event decision — the tax and timing strategy you choose can mean tens of thousands of pounds in CGT saved or lost. With careful planning, the annual exempt amount, capital loss offsetting and spousal transfers can significantly reduce your total liability.
Why staggering disposals saves CGT
Every individual has a £3,000 CGT annual exempt amount for 2025/26, which renews on 5 April each year. Sell two properties in the same tax year with combined gains of £100,000 and you get one exemption — paying CGT on £97,000. Stagger the same sales across two tax years and you get two exemptions (£6,000 total), saving £720 at 24%. Spread three or more sales across separate years and the savings compound. The optimiser hints in this calculator identify where moving a property to a different year would trigger an additional exempt amount.
Spousal transfer strategy
Transfers of assets between spouses and civil partners are CGT-free. Transferring a share of an investment property to a spouse before sale means both individuals can use their own £3,000 annual exempt amount — effectively doubling the tax-free allowance to £6,000 per year. If one spouse is a basic-rate taxpayer, their share of any gain above the exempt amount may also qualify for the lower 18% rate, providing a further saving. This strategy should be planned well in advance of any sale.
Offsetting capital losses
Capital losses — from selling properties, shares or other chargeable assets at a loss — can be offset against capital gains in the same tax year. Unused capital losses carry forward indefinitely and can be applied to future years' gains. If you have an underperforming property showing a paper loss, consider selling it in the same year as a high-gain disposal. Enter a negative gain figure for a loss-making property in the calculator above to model this offset.
Corporation tax vs CGT on disposal
Properties held personally are subject to CGT at 18% or 24%. Properties held in a limited company pay corporation tax on gains — currently 25% for companies with profits over £250,000. However, extracting those proceeds as dividends then incurs further personal income tax (8.75%–39.35%). For most investors with modest portfolios, personal ownership is more tax-efficient on disposal. If your properties are in a company, model the full extraction cost before deciding on timing.
Related calculators: Model CGT on a single sale with our Capital Gains Tax Calculator. Analyse ongoing property returns at our Buy-to-Let Calculator. Model a buy-refurb-sell with our Property Flip Calculator.
External references: HMRC: Capital Gains Tax | HMRC: Capital losses
Portfolio Disposal FAQs
How do I minimise CGT when selling a property portfolio?
Key strategies: stagger disposals across tax years to use a fresh £3,000 exempt amount each year; transfer shares to a spouse to double the exempt amount; sell loss-making assets in the same year as gains to offset; sell in lower-income years to access the 18% basic-rate CGT band. Always take qualified tax advice for significant portfolios.
Can I offset a loss on one property against a gain on another?
Yes — capital losses in the same tax year are set against capital gains before CGT is calculated. Unused losses are carried forward indefinitely. If you're selling a portfolio, it can be worth accelerating the sale of an underperforming property in a high-gain year to minimise net taxable gains.
What is the CGT annual exempt amount in 2025/26?
The annual exempt amount is £3,000 for 2025/26 — significantly reduced from £12,300 in 2022/23. Each individual gets their own allowance. A couple jointly owning properties can use £6,000 per year (£3,000 each) if they file separately and take gain proportional to their ownership shares.
Is it better to sell properties personally or through a company?
Personal ownership typically results in lower total tax on disposal: CGT at 18–24% vs corporation tax at 25% plus dividend tax on extraction. However, every portfolio is different. If your company has significant retained profits or you're a very high earner, professional advice may reveal planning opportunities that change the calculation.
Know what your portfolio is worth
PropertyAlert.uk analyses comparable sold prices, yield and cashflow for 46,000+ live UK listings. Benchmark your portfolio value before you plan a disposal.
Analyse Portfolio on PropertyAlert.uk →