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Capital Gains Tax (CGT) applies when you sell or dispose of an asset that has increased in value, and it’s the gain, not the total sale amount, that’s taxed. At P10 Financial, we specialise in helping individuals, landlords, investors, and business owners understand how CGT works, when it applies, and how to reduce the amount you owe.
Capital Gains Tax is charged on the gain, not the sale price, when you sell or give away assets such as a buy-to-let or second home, shares outside ISAs and pensions, or business assets. For 2026/27 the annual tax-free allowance is £3,000; gains are taxed at 18% within your unused basic-rate band and 24% above it. Residential property gains must usually be reported within 60 days of completion. P10 Financial advises landlords, investors and business owners on reliefs and timing, from CGT planning before a sale to CGT advice on reporting it.
With tax rules tightening and allowances falling, CGT is becoming one of the most important considerations in personal and property tax planning. Whether you're selling shares, disposing of a second property, transferring business assets, or simply reorganising your portfolio, getting the right advice before a transaction can significantly reduce your tax bill.
Capital Gains Tax is a tax on the profit you make when you sell or give away certain types of assets. This includes:
Buy-to-let or second homes
Stocks and shares (outside of ISAs or pensions)
Business assets
Valuable personal possessions (worth over £6,000, such as art or antiques)
You don’t usually pay CGT on your main residence, but there are exceptions, particularly if you’ve let out part of the home or used it for business purposes.
Recent changes to CGT have significantly reduced the tax-free allowances available, bringing more people into scope:
The annual tax-free allowance is now just £3,000 per individual and £1,500 for most trusts (down from £12,300 in 2022/23).
Higher and additional-rate taxpayers pay 24% on their gains, on property and other assets alike: the lower rates for assets other than residential property ended on 30 October 2024.
Basic-rate taxpayers pay 18% on gains that fit within their unused basic-rate band, and 24% on the rest. Trustees and personal representatives pay 24%.
These lower allowances mean even relatively modest gains from property, shares, or business sales can trigger a tax liability, making professional advice more important than ever.
Example: Selling a buy-to-let property with a £100,000 gain, after allowable costs, could mean a CGT bill of £23,280 for a higher-rate taxpayer: 24% of the gain above the £3,000 allowance.
One of the most common triggers for CGT is the sale of a rental property or second home. Our specialist landlord tax team helps clients structure their portfolio efficiently, time disposals for maximum tax savings, and claim all available reliefs.
We advise on:
Private Residence Relief (PRR)
Lettings Relief (where applicable)
Joint ownership and spousal transfers
Offset of costs (such as stamp duty, legal fees, and improvement works)
Timing sales across tax years to maximise allowance
If you’re selling or exiting a business, CGT may apply to shares, goodwill, or other company assets. Business Asset Disposal Relief (formerly Entrepreneurs’ Relief) can reduce the rate on qualifying gains, up to a lifetime limit of £1 million: to 18% for disposals from 6 April 2026, against 24% without it. The relief’s rate was 10% until 5 April 2025 and 14% in 2025/26.
At P10 Financial, we provide tax planning and structuring advice for:
Company directors selling shares
Sole traders and partnerships winding down
Family business succession planning
EMI share schemes and start-up exits
Smart planning can often reduce or even eliminate CGT altogether. Here’s how our accountants can help:
Timing disposals to make use of allowances
Splitting assets with a spouse or civil partner
Transferring assets to children or trusts (in a tax-efficient way)
Offsetting losses from other asset disposals
Using pensions or ISAs to shelter gains
Reinvesting through SEIS/EIS or rollover relief, where eligible
Most CGT events must now be reported and paid much faster than in the past. For residential property, the tax must usually be reported within 60 days of completion using HMRC’s online system. For other assets, CGT is typically included in your self-assessment tax return.
Our accountants ensure:
All calculations are accurate and fully compliant
Reliefs and costs are maximised
Deadlines are met to avoid penalties
HMRC reporting is handled on your behalf
Our CGT expertise covers:
UK residents, new arrivals & non-residents
Property investors & developers
High earners & portfolio holders
Entrepreneurs & business owners
We bring technical knowledge, proactive planning, and personal service to every client. Whether you're selling a rental flat in London, offloading shares, or preparing for a major liquidity event, we ensure you understand the tax consequences, and how to manage them.
