Understanding how much is capital gains tax in the UK is essential for anyone selling an asset that has increased in value, as the rates and allowances have undergone significant shifts heading into 2026.

Capital Gains Tax (CGT) is not a tax on the total amount of money you receive from a sale, but rather a levy on the gain or profit made between the time you acquired the asset and the time you disposed of it.

For the 2026/27 tax year, the standard Capital Gains Tax rates are 10% for basic-rate taxpayers and 20% for higher-rate taxpayers on most assets.

However, residential property is taxed at higher rates of 18% and 24%, respectively. Most individuals can utilise a £3,000 annual exempt amount to reduce their taxable gain before these percentages are applied.

What is Capital Gains Tax and how does it work?

Capital Gains Tax is a government levy on the profit you realise when you sell, gift, or exchange an asset. It applies to chargeable assets, which include most personal possessions worth £6,000 or more (excluding cars), shares not held in an ISA, and property that isn’t your main home.

In practice, the tax is only triggered upon disposal, meaning the moment the legal ownership changes.

Are personal items like cars and property included?

A common area of confusion involves wasting assets. Generally, private motor cars, including vintage or classic cars, are exempt from CGT because they are expected to have a predictable life of less than 50 years.

While vehicle sales are generally exempt from this specific tax, motorists should still remain mindful of the new car tax rates 2025, which govern annual VED costs. By contrast, residential property remains the most frequent trigger for significant CGT liabilities.

While your main home is usually exempt under Private Residence Relief, any second home, buy-to-let, or inherited property is fully taxable.

Asset Category	CGT Status	Typical Rate (Higher Rate)
Main Residence	Usually Exempt	0%
Investment Property	Taxable	24%
Private Cars	Exempt	N/A
Shares (Non-ISA)	Taxable	20%
Cryptoassets	Taxable	20%

The Origins of CGT: Who introduced it and when?

Capital Gains Tax is a relatively modern addition to the UK’s fiscal landscape. It was introduced by the Chancellor of the Exchequer, James Callaghan, in 1965. Before this, individuals could often avoid high Income Tax rates by converting their regular earnings into capital profits, which were then untaxed.

The introduction of CGT was a landmark move to ensure horizontal equity in the tax system. By taxing capital profits, the government ensured that those who made money through asset appreciation contributed to the public purse in a similar way to those who earned a salary.

Since 1965, the rules have evolved from Taper Relief and Indexation Allowance to the simplified, rate-based system we use today.

Who is required to pay Capital Gains Tax in the UK?

You are liable for CGT if you are a UK resident for tax purposes and make a gain on a worldwide asset. This includes individuals, partners in a business, and trustees.

For expats or non-residents, the rules are stricter; you typically only pay UK CGT on UK-based immovable property (land and buildings) even if you live abroad.

Do senior citizens and retirees have to pay?

There is no age exemption for Capital Gains Tax. Whether you are 18 or 80, if you sell an asset for a profit above your allowance, you must pay.

A common pattern we see is retirees selling a long-held holiday home or a portfolio of shares to fund their retirement; in these cases, the gain is often substantial because the base cost (the original purchase price) was so low decades ago.

• Individuals: Pay based on their income tax band.
• Trustees: Pay at the flat rate of 24%.
• Business Owners: May qualify for the 18% BADR rate (up from 14% in the previous year).
• Exempt Persons: If your total gains for the year are below £3,000, you are exempt and do not need to report the gain unless you are already registered for Self Assessment.

How much is capital gains tax in 2026/27?

The rate of tax you pay is determined by your total annual taxable income. HMRC calculates your liability by layering your capital gains on top of your earnings, which can often push you into a higher tax bracket.

To find your rate, you must first calculate your taxable income (after the Personal Allowance) and then add your capital gain on top.

The 2026 Business Asset Disposal Relief (BADR) shift

For business owners, 2026 marks a significant transition. Previously, BADR (formerly Entrepreneurs’ Relief) allowed a flat 10% rate. As of 2026, this rate has been adjusted to move closer to standard rates, making it vital for sellers to time their exit carefully.

When reviewing decisions made by SME owners, those who sold before the 2025/26 threshold often saved thousands compared to those selling in the current 2026/27 window.

How to calculate your Capital Gains Tax liability

Calculating your bill correctly is the only way to ensure you don’t overpay HMRC. Many people forget to include acquisition costs or improvement costs, which can significantly lower the taxable profit.

1. Calculate the Disposal Value: The price you sold the asset for (or market value if gifted).
2. Determine the Base Cost: What you originally paid for the asset.
3. Deduct Allowable Expenses: Include solicitor fees, estate agent commissions, and Stamp Duty paid during purchase.
4. Deduct Capital Improvements: For property, this includes extensions or new roofs (not general repairs like painting).
5. Identify the Net Gain: Disposal Value – (Base Cost + Expenses + Improvements).
6. Subtract the Allowance: Apply your £3,000 annual exempt amount.
7. Add to Income: Place this gain on top of your salary to see which tax band you hit.
8. Apply the Rate: Multiply the remaining gain by 10%, 18%, 20%, or 24%.

Understanding the 2026 Allowances and Exemptions

The most significant change in recent years has been the reduction of the Annual Exempt Amount. Previously set as high as £12,300, it has been cut to just £3,000 for the 2026 tax year. This means more small-time investors are being pulled into the tax net than ever before.

The Death Uplift and Inherited Assets

One critical area of tax planning that is frequently overlooked is the treatment of inherited assets. If you inherit a house or shares, you do not pay CGT at the moment of inheritance (though Inheritance Tax may apply).

It is important to understand when do you pay inheritance tax in these scenarios, as the thresholds and reporting windows for estates are entirely separate from capital gains rules.

Instead, your base cost is reset to the market value of the asset on the date the person died.

This is known as the Death Uplift. If you sell the asset immediately for its probate value, your CGT bill is often £0.

How to pay Capital Gains Tax and avoid fines

HMRC provides two distinct routes for payment depending on what you sold. If you miss these windows, the interest charges can mount quickly.

Where and when to pay

• Residential Property: You must report and pay within 60 days of completion using the Capital Gains Tax on UK Property online service.
• Other Assets (Shares, Crypto, Art): These are reported via your annual Self Assessment tax return. For these assets, the deadline for reporting and payment falls on 31st January following the date when does the tax year end for the period in which your disposal took place.

Penalty Type	Trigger Point	Cost
Initial Late Filing	1 day late	£100
3 Months Late	90 days late	£10 per day (up to 90 days)
6 Months Late	180 days late	Greater of £300 or 5% of tax due
Late Payment Interest	From the due date	Variable (currently ~7.75%)

Strategic Tax Planning: How to legally pay less CGT

Effective tax planning isn’t about evasion; it is about utilising HMRC’s own frameworks to ensure you aren’t paying more than is legally required. In practice, tax efficiency is about using the rules as they were intended.

1. Spousal Transfers and Bed and Spouse

Assets can be transferred between spouses or civil partners at nil gain/nil loss. This effectively allows a couple to combine their allowances, giving them a £6,000 tax-free threshold.

If one spouse is a basic-rate taxpayer and the other is a higher-rate taxpayer, transferring the asset to the lower earner before the sale can drop the tax rate from 20% to 10%.

2. The 30-Day Crypto Rule (Bed & Breakfasting)

To prevent wash sales (selling just to use the allowance and immediately rebuying), HMRC has a 30-day rule. If you sell Bitcoin and buy it back within 30 days, you cannot use the new price as your base cost for the old gain. Understanding this is crucial for crypto investors trying to harvest losses.

3. The 2026 Divorce Rule Update

Recent changes now allow separating couples up to three years to transfer assets between each other without triggering a CGT bill. Previously, this window was much shorter, often forcing rushed sales during a difficult emotional time.

4. Loss Harvesting

If you have dog stocks that have lost value, selling them in the same year as a big winner allows you to subtract the loss from the gain, potentially bringing you under the £3,000 threshold.

The 2026 Verdict and Next Steps

Successfully managing a CGT liability in 2026 depends on accurate record-keeping and an awareness of how your disposal aligns with the current tax year. With the allowance now at a historic low of £3,000, almost any significant asset sale will trigger a reporting requirement.

Steps to take before you sell:

1. Audit your portfolio: Identify any gains nearing the £3,000 limit.
2. Document everything: Save your completion statements and legal invoices.
3. Use the 60-day rule: If selling property, do not wait for your annual tax return; the clock starts on the day you hand over the keys.

FAQ

Do I pay capital gains tax when I sell my main home?

Generally, no, provided it has been your only home, and you haven’t let it out. This is known as Private Residence Relief.

Can I use my 2025 allowance if I sell in 2026?

No. The annual exempt amount is use it or lose it. You cannot carry forward unused allowances to the next tax year.

What is the fine for missing the 60-day property deadline?

You will face an immediate £100 fine, plus further penalties and interest if the delay exceeds three months.

Do I pay CGT on gold coins?

Sovereigns and Britannia coins are considered legal tender and are exempt from CGT. Other gold bullion is taxable.

Is there a different rate for commercial property?

Commercial property is actually taxed at the lower rates of 10% and 20%, unlike residential property, which is 18% and 24%.

How does HMRC know if I sold crypto?

HMRC receives data directly from major exchanges (like Coinbase and Kraken). Failing to report crypto gains is now a high-priority area for tax audits.

Can I claim for the cost of my time spent improving a property?

No. You can only deduct the cost of materials and professional labour (contractors). You cannot charge the tax office for your own DIY labour.