Divorce and tax: what to check before you sign

How separation affects the family home, pensions, investments, business shares and future tax bills and why the after-tax value of a settlement is rarely the same as the headline figure.

Divorce or the end of a civil partnership brings difficult personal and financial decisions, and tax is rarely the first thing on the list. It should not be the last, either.

A division of assets can look even on paper and be materially unequal once tax is taken into account. A £200,000 cash payment and a £200,000 investment portfolio are not the same thing if the portfolio carries a £80,000 unrealised gain, at 24% that is around £19,200 of tax waiting to be paid, so the portfolio is really worth closer to £181,000. The same problem arises with a rental property carrying a long-held gain, a pension that cannot be accessed for fifteen years, or a shareholding in a company the other party controls.

This guide sets out the main UK tax points to consider. It is general guidance, not legal or tax advice, and every case turns on its own facts, timing and the precise wording of the financial agreement. The consistent theme is that the tax position should be checked before the financial order is finalised and before assets move, not afterwards.

The latest Office for National Statistics reported 103,816 legal partnership dissolutions in England and Wales in 2023, made up of 102,678 divorces and 1,138 civil partnership dissolutions. The divorce rate was 8.6 per 1,000 married men and 8.5 per 1,000 married women.

Start with the dates

Almost every point below turns on timing. The dates that matter include:

• when you stopped living together, and whether the separation was likely to be permanent
• when the conditional order (previously decree nisi) was made
• when the final order (previously decree absolute) was made
• when a financial agreement, consent order or property adjustment order was approved
• when each asset was transferred
• when a property was sold, or when someone moved out of the family home

For Capital Gains Tax, HMRC treats spouses and civil partners as living together unless they are separated under a court order, under a formal deed of separation, or in circumstances where the separation is likely to be permanent. Living in different houses does not by itself mean you are treated as separated if the marriage or civil partnership has not broken down.

Capital Gains Tax: the no gain/no loss window

While spouses or civil partners are living together, transfers of most assets between them take place on a no gain/no loss basis. The transferor triggers no immediate CGT charge, and the recipient inherits the original base cost.

The rules for separating couples changed for disposals on or after 6 April 2023 and are now considerably more generous. Where you were living together at some point in a tax year, transfers between you qualify for no gain/no loss treatment up to the earlier of:

• the end of the third tax year after the tax year in which you stopped living together, and
• the date of the final order (or annulment or dissolution)

Separately, and importantly, transfers made under a formal divorce or separation agreement or court order qualify for no gain/no loss treatment with no time limit at all.

Two practical consequences follow. First, the drafting of the settlement matters as much as the timing: a transfer outside the automatic window can still be protected if it is made under the right formal agreement or order. Second, no gain/no loss treatment generally requires the recipient to be within the scope of UK CGT, so it should not be assumed where one party has left the UK.

Which assets need reviewing

The family home takes most of the attention, but the exposure often sits elsewhere:

• buy-to-let properties and second homes
• shares and investment portfolios held outside ISAs and pensions
• cryptoassets
• private company shares
• commercial property and land
• valuable chattels
• overseas assets

No gain/no loss means no tax now. It does not mean no tax. The recipient takes over the original base cost, so a later sale can produce a charge on the whole gain since the asset was first acquired, not just the growth since the divorce. That is a real cost and should be priced into the settlement.

Rates and reporting

Annual exempt amount for 2026/27: £3,000 per individual.

Main rates: 18% on gains within the basic rate band and 24% above it. These unified rates have applied to all assets, shares, crypto and residential property alike since 30 October 2024.

Trustees and personal representatives: 24%.

Business Asset Disposal Relief is 18% for 2026/27. The £1m lifetime limit is unchanged; Investors’ Relief has a £1m lifetime limit.

A disposal of UK residential property producing a CGT liability must be reported and paid within 60 days of completion through HMRC’s Capital Gains Tax on UK property account, separately from the tax return. This deadline is missed surprisingly often in divorce cases.

The family home and Private Residence Relief

Private Residence Relief (PRR) can remove CGT on the disposal of a property that has been your only or main residence. Spouses and civil partners living together can only have one main residence between them; after separation, each can have their own.

If you move out and later sell or transfer your share, the starting point is that PRR covers the period of actual occupation plus the final nine months of ownership. Where the gap between moving out and disposal is longer, two provisions can help.

Transferring your share to your former spouse

Where the transfer is made under a formal divorce or separation agreement or court order, and the property has remained the main residence of the spouse who stayed, the person who moved out can claim to have the property treated as their main residence for the whole period. This is a claim, not automatic. There is often a trade-off, whereby in the same period, you cannot treat any other property as your main residence, which can be costly if you have bought a new home in the meantime.

Since 6 April 2023, transfers of this kind will usually qualify for no gain/no loss treatment in any event, which reduces the number of cases in which the claim is needed.

Deferred sale arrangements

Where one party gives up their interest but keeps a right to a share of the proceeds on a later sale; a Mesher-style arrangement, often deferred until the youngest child finishes school, the later receipt would otherwise be a capital sum derived from an asset with no PRR available. Since 6 April 2023, that later receipt is instead taxed on the same basis as the original transfer, so PRR applies in the same proportion. Albeit for this to apply the conditions here are very specific so it is important to get the drafting correct at the outset.

Stamp Duty Land Tax and property transfers

Two separate questions arise: is the transfer itself chargeable, and does the arrangement affect the surcharge on a future purchase?

The transfer

For property in England and Northern Ireland, a transfer of an interest in land between spouses or civil partners is exempt from SDLT where it is made in connection with divorce, dissolution, annulment, or judicial separation, whether under a court order or by agreement in contemplation of the ending of the relationship. There is no need to notify HMRC, even where the value exceeds the threshold.

That exemption is specific. Outside it, taking over mortgage debt counts as chargeable consideration, which is a common trap for unmarried joint owners. Wales and Scotland operate their own taxes so it is always important to check the position by reference to where the property is.

The surcharge on a new home

The higher rates for additional dwellings have been 5% above standard residential rates since 31 October 2024. If one party keeps an interest in the former matrimonial home and then buys somewhere else to live, the surcharge would ordinarily apply. There are two routes out:

• property adjustment order relief. Where a property adjustment order has been made in respect of the interest for the benefit of the other party, and the home is that other party’s only or main residence but not yours, your interest is ignored for surcharge purposes. This depends on there actually being a qualifying order, an informal understanding will not do.
• replacement of main residence. If the former home is sold within three years of the new purchase, the surcharge can be reclaimed, but the claim must be made and is not automatic.

First-time buyers’ relief is lost permanently once someone has owned a major interest in a dwelling anywhere in the world, so a party who is bought out will not qualify on a later purchase.

Mortgages

A transfer of legal title does not release anyone from a mortgage. Before agreeing that one party keeps the home, check:

• whether the lender will actually release the other party, and on what affordability basis
• whether the transfer falls within the divorce SDLT exemption
• whether either party retains a beneficial interest, and how that interacts with the surcharge
• whether a later sale could trigger CGT, and for whom
• whether the party moving out intends to buy

Pensions

Pensions are frequently the largest asset after the home and are consistently undervalued in negotiation because they are not visible in day-to-day finances. There are three routes:

• pension sharing. A percentage of the member’s rights is transferred. The member suffers a pension debit; the recipient receives a pension credit and holds benefits, taxable in their hands when drawn. Schemes commonly charge for implementing a sharing order.
• pension attachment (earmarking). Part of the member’s benefits is paid to the former spouse when the member draws them. There is no clean break, and the tax treatment differs from sharing.
• offsetting. The pension stays intact and other assets compensate. This requires a like-for-like comparison that is often not made: a pension is taxable when drawn, whereas cash and an ISA are not, so a pound of pension is not a pound of equity in the house.

Cash equivalent values are the starting point, however defined benefit schemes, public sector schemes, pensions already in payment and any protections or enhanced allowances a member holds all require specialist input, ideally from a pensions actuary alongside the tax adviser.

From April 2027, most unused pension funds and death benefits are expected to be brought within the estate for Inheritance Tax. That changes the calculus on both offsetting and death benefit nominations, and it makes reviewing expression of wish forms after separation more important than it used to be.

Maintenance payments

Child maintenance is not taxable in the hands of the recipient, and GOV.UK confirms it does not affect benefits, including Universal Credit.

Spousal maintenance is different, but for almost all modern cases it produces no deduction for the payer and no taxable income for the recipient. A residual Maintenance Payments Relief still exits, but only where either party was born before 6 April 1935. For 2026/27 it is worth 10% of qualifying payments, capped at a £453 reduction in tax.

Where maintenance forms part of a settlement, both the payer and the recipient should check how it fits within their wider tax and cash flow position.

Child Benefit and the High Income Child Benefit Charge

For 2026/27, Child Benefit is £27.05 per week for the eldest or only child and £17.90 per week for each additional child.

The High Income Child Benefit Charge applies where the higher earner has adjusted net income above £60,000, tapering to a full clawback at £80,000. It is assessed on one individual’s income, not household income.

Separation changes the picture in three ways:

• after a permanent separation, the former partner’s income drops out of the test. The threshold then applies to the parent claiming Child Benefit (or to a new partner in the household). Someone who stopped claiming because of a high-earning spouse may now be able to claim in full.
• the claim itself should be reviewed, including who pays the charge and who receives payment.
• a claim at the nil rate still generates National Insurance credits towards the State Pension for a parent who is not working or has low earnings. This is easily and permanently lost.

Employed individuals can now settle the charge through their PAYE code rather than registering for Self Assessment, which removes a filing obligation for some.

Marriage Allowance and tax codes

Marriage Allowance allows the transfer of £1,260 of Personal Allowance between eligible spouses and civil partners, worth up to £252 for 2026/27 against a Personal Allowance of £12,570.

It must be cancelled where the relationship ends through divorce, dissolution or legal separation, and should be reviewed where changed income means the couple no longer qualifies.

Tax codes, addresses, names, benefits in kind and taxable income all commonly need updating around a separation, and this is usually the last thing anyone thinks about. Underpayments collected a year later are avoidable.

Inheritance Tax and estate planning

Transfers between spouses and civil partners are exempt from IHT, and that exemption continues until the final order; not from the date of separation. After that it falls away, and transfers between former spouses need to be considered on ordinary principles. In practice, most transfers made under a court order will fall outside the charge either because there is no gratuitous intent or because they qualify as dispositions for family maintenance, but this should be confirmed rather than assumed, particularly for large voluntary transfers made outside an order.

For 2026/27 the nil rate band is £325,000 and the residence nil rate band is £175,000, tapering where the net estate exceeds £2m. A qualifying estate can pass up to £500,000, or up to £1m for a surviving spouse or civil partner where the unused allowances are available. Where the family home is sold as part of the settlement, the downsizing provisions may preserve RNRB and should be checked.

After separation, review:

• the will (and note that a final order affects how existing gifts to a former spouse operate)
• pension death benefit nominations and expression of wish forms
• life policies and whether they are written in trust
• jointly owned property, and whether a joint tenancy should be severed
• trust arrangements and any interests in possession
• guardianship wishes
• lasting powers of attorney, where a former spouse is often the named attorney

Tax planning and legal planning typically work together at this stage.

Business owners and family companies

Where one or both parties own a business, the settlement affects the company as well as the individuals. Review:

• whether shares are transferring, and whether no gain/no loss treatment applies
• whether holdover relief is available if it does not
• whether a transfer disturbs the two-year qualifying period for Business Asset Disposal Relief, now at 18% for 2026/27
• whether the shares are employment-related securities, which can bring income tax charges into play on a transfer
• whether the company has distributable reserves, and how a buy-out would be funded
• whether a company purchase of own shares could achieve capital rather than income treatment, and whether the trade benefit test is met, advance clearance from HMRC is available and should be obtained before completion
• whether dividend policy will change, and whether either party remains a director or employee
• what the shareholders’ agreement and articles say about transfers
• whether a formal valuation is needed

Stamp duty at 0.5% on share transfers is generally not chargeable where the transfer is made under a court order in connection with divorce, but the exemption should be claimed correctly on the stock transfer form.

Dividend rates rose from 6 April 2026: 10.75% basic rate and 35.75% higher rate, each increasing by two percentage points, with the additional rate unchanged at 39.35% and the dividend allowance still £500. Where maintenance is to be funded out of dividends, the gross cost is now higher. A settlement involving company shares should be reviewed before anything is signed. The legal value of the shares, the tax base cost, future dividend rights and control of the company may all point in different directions.

Unmarried couples

This guide focuses mainly on divorce and civil partnership dissolution, but unmarried couples should take extra care. Most of the reliefs above are unavailable to unmarried partners. There is no no gain/no loss transfer, no divorce SDLT exemption, no spouse exemption for IHT and no pension sharing.

Transfers of property between unmarried joint owners can generate an SDLT charge where consideration is given, including where mortgage debt is taken over, and transfers of other assets are made at market value for CGT. Cohabitation confers none of the tax treatment of marriage or civil partnership, and separating unmarried couples often face a worse tax outcome than divorcing spouses on identical facts.

Checklist before agreeing a settlement

• what does each party own, legally and beneficially?
• which assets carry built-in gains, and what is the after-tax value of each side of the split?
• do the proposed transfers fall within the no gain/no loss window, or need to be made under a formal agreement or order?
• does the family home qualify for full or partial PRR, and is a s.225B claim or a s.225BA deferred sale arrangement in point?
• will the party moving out buy another home, and when?
• is any property transfer covered by the divorce SDLT exemption?
• will either party face the 5% surcharge, and does the property adjustment order relief apply?
• is any mortgage debt being taken over, and will the lender release the other party?
• has any UK residential property disposal been reported within 60 days?
• is pension sharing, offsetting or attachment proposed, and has the comparison been made on a net basis?
• have child and spousal maintenance been modelled after tax?
• who should claim Child Benefit, and are National Insurance credits protected?
• does the High Income Child Benefit Charge position change?
• should Marriage Allowance be cancelled?
• do tax codes and HMRC records need updating?
• have wills, nominations, life policies, joint tenancies and powers of attorney been reviewed?
• are business shares, dividends or company funding part of the settlement, and is clearance needed?

Summing up

Divorce tax planning is not about reducing fairness. It is about knowing what a settlement is actually worth and the real financial outcome before it becomes binding.

The same division of assets can produce very different outcomes depending on timing, asset type, ownership history, residence and future plans. The best time to look at the tax position is while the financial order is still in draft and before anything is transferred, which gives both parties a clear view of the after-tax result and avoids unwelcome bills later.

Contact Steven Martin to understand how property, pensions, investments or Child Benefit could affect your settlement.