Capital gains tax on divorce: the windows, the home and the gain

The short answer: moving a house or other asset to your spouse or civil partner is normally “no gain, no loss”, so no capital gains tax is due on the transfer. The tax is not cancelled, though. The person who receives the asset takes over its original cost, so the gain is simply passed to them and taxed when they eventually sell. The timing rules are what catch people out.

Three windows that decide whether a transfer is tax-free

1. While you live together. Married couples and civil partners living together can transfer assets to each other at no gain, no loss.
2. The year you separate plus the next three tax years. After you separate, transfers stay no gain, no loss for the rest of that tax year and three more tax years after it.
3. Under a formal agreement or court order. A transfer made as part of a divorce order or formal separation agreement is no gain, no loss whenever it happens, with no time limit.

Outside those windows, the transfer counts as a normal sale at market value. The person giving up the asset may owe capital gains tax on their share of the gain, even though no money has changed hands. Unmarried couples get none of these protections.

The gain moves with the asset

No gain, no loss does not erase the tax; it defers it. Here is a worked example. A couple bought a house for £200,000. It is worth £320,000 when one partner takes over the other’s half under a divorce agreement. There is no tax on the transfer, but the new sole owner keeps the original £200,000 cost, not £320,000. If she sells later for £350,000, the gain is £150,000, less the £3,000 annual exempt amount.

Had the transfer been taxed as a sale at the date of transfer, the half given up would have carried a gain of £60,000. No gain, no loss avoids that, but it means the receiving partner inherits the lot. That matters when you are comparing what each of you gets: a house with a built-in gain is worth less after tax than the same value in cash or savings.

The family home

For the home you lived in as your main residence, private residence relief usually covers some or all of the gain, which is why the family home is often the easiest asset to deal with. The partner who stays keeps the relief while it remains their main home. The partner who moves out can usually claim relief for the time they lived there and, in many cases, for a further period afterwards, as long as the home stays their former main residence until it is sold or transferred. If you rent the home out or it is not your main residence, only part of the gain may be covered. Use the figures here as a guide and get advice before you rely on the relief.

Other assets to check

• Buy-to-let and second homes: no private residence relief, so any gain is taxable on a later sale.
• Shares and investments: a transfer is also no gain, no loss, and the receiver takes over the original cost.
• Pensions: outside capital gains tax. Offsetting a pension against property is where tax risk often hides, because the property carries a built-in gain and the pension does not.
• Business assets and valuables: the same rule applies, but reliefs differ. Take advice.

Reporting and paying

If you sell a UK residential property and tax is due, you must report the gain and pay within 60 days of completion. For stamp duty on a replacement home, see stamp duty on a second home, and for the costs of a sale in general use the capital gains tax calculator.

Can you reduce the bill?

Sensible planning here is about using reliefs properly, not avoiding tax:

• Use both annual exempt amounts. While the asset is jointly owned, a sale uses two £3,000 allowances. After the transfer only one is available to the new owner.
• Transfer inside the windows. Missing the three-year window without a formal agreement can turn a free transfer into a taxable sale.
• Know the base cost. If you keep records of the purchase price and costs such as legal fees and improvements, the gain is smaller.
• Think about losses. Capital losses on other assets can be set against a gain.
• Compare assets after tax. A pension, cash and a property of the same headline value are not worth the same after tax.

Who pays the tax in a divorce?

The person who owns the asset when it is sold pays any capital gains tax, on the gain from the original cost. If the asset is sold while you still jointly own it, each of you reports your own share. If it has been transferred, the new owner is responsible for the whole of the later gain. That is why it matters to check the built-in gain on every asset before a settlement is agreed.

This is general information, not legal or tax advice. The rules are detailed and depend on dates and circumstances. Speak to a solicitor and a tax adviser before agreeing a settlement.