Tax Advice for Separating Couples

A financial settlement that ignores tax consequences can cost a client tens or hundreds of thousands of pounds. Capital gains tax on asset transfers, stamp duty on property, pension sharing implications and income tax changes on separation all affect the true value of a proposed settlement. The court expects both parties to have taken tax advice before the final hearing, and solicitors who present a settlement without a tax schedule risk having it queried by the judge. We produce the analysis that allows settlements to be compared on an after-tax basis.

Why Tax Advice Matters in Financial Remedy Proceedings

Consider a straightforward example. A couple's assets include the matrimonial home (worth £800,000, no mortgage, no CGT because of principal private residence relief), an investment property (worth £400,000, original cost £200,000, producing a latent gain of £200,000) and cash of £200,000. The total gross value is £1.4 million.

An equal division of gross assets gives each spouse £700,000. But if one spouse receives the investment property and £300,000 in cash, they hold a latent CGT liability of approximately £48,000 (at the current 24% rate on residential property gains above the annual exempt amount). The other spouse, receiving the family home and £100,000 in cash, has no latent tax liability at all. The split looks equal on paper but is not equal after tax.

The forensic accountant's role is to produce a tax schedule that strips out latent liabilities and presents the after-tax value of each proposed settlement structure. This allows the solicitor and the court to compare settlement options on a like-for-like basis.

Capital Gains Tax: The 3-Year No-Gain/No-Loss Rule

Under TCGA 1992 s.58, transfers between spouses living together are treated as giving rise to neither a gain nor a loss. The transferee spouse is treated as having acquired the asset at the transferor's original base cost.

Before April 2023, this no-gain/no-loss treatment ended at the close of the tax year of separation. For a couple who separated in June, the window might be as short as 9 months. This created pressure to transfer assets before 5 April, often before the financial settlement had been agreed.

The Finance Act 2023, s.24, extended this window significantly. Separating spouses now have until the later of:

• 3 years after the end of the tax year in which they separated, or
• Any time, if the transfer is made pursuant to a formal divorce agreement or court order

Worked example: A couple separates in July 2025. The tax year of separation is 2025/26. The 3-year window runs until 5 April 2029. Any transfer of assets between them before that date qualifies for no-gain/no-loss treatment, regardless of whether the divorce has been finalised. Transfers made after 5 April 2029 still qualify if they are pursuant to a court order or formal agreement.

The practical implication for solicitors is that the old urgency around tax-year-end transfers has largely been eliminated. However, the 3-year window is not unlimited, and where the divorce process is protracted, the timing of asset transfers still needs planning. HMRC's guidance on this is in CG22400.

The trap remains for transfers that fall outside both the 3-year window and the scope of a formal divorce agreement. A voluntary transfer of, say, a buy-to-let property between separated spouses three and a half years after separation, without a court order, would crystallise a chargeable gain in the transferor's hands. The transferor would be liable for CGT at 24% (residential property rate) on the gain, with only the £3,000 annual exempt amount available to offset against it.

Principal Private Residence Relief on Separation

Principal private residence (PPR) relief exempts gains on a property that has been the individual's only or main residence throughout ownership. When one spouse leaves the matrimonial home, they retain deemed occupation (and therefore PPR relief) for the final 9 months of ownership.

However, where the property is being transferred to the other spouse as part of a divorce settlement, the deemed occupation period is extended to 36 months from 6 April 2020. This gives the departing spouse PPR relief for 3 years after leaving, provided the property remains the other spouse's main residence. HMRC's guidance is in SP D12.

Where both spouses own separate properties after separation, the PPR nomination becomes important. Each individual can nominate which property is their main residence for PPR purposes. The nomination must be made within 2 years of acquiring the second property. Getting this wrong can result in an unexpected CGT liability on what the client assumed was a tax-free sale.

Mesher orders create a deferred CGT liability that must be quantified at the time of the order. A Mesher order allows one spouse (typically the one with care of the children) to remain in the property until a triggering event (youngest child reaching 18, remarriage, cohabitation). When the property is eventually sold, the departing spouse's share of the gain may not qualify for PPR relief if they have been living elsewhere for more than 36 months. The forensic accountant should quantify this potential future liability at current rates so the court can factor it into the overall settlement.

SDLT Exemptions for Separating Spouses

Transfers of property between spouses or civil partners pursuant to a court order on divorce are exempt from SDLT under Finance Act 2003, Schedule 3, paragraph 3. This exemption covers transfers ordered by the court as part of financial remedy proceedings, as well as transfers made under a separation agreement that is incorporated into a court order.

The exemption only applies to transfers pursuant to a court order or agreement. A voluntary transfer between separated spouses who have not formalised their arrangements may not qualify, and SDLT would be chargeable at the applicable rate on the market value of the property (or the consideration, if any).

The additional dwelling surcharge adds a further layer of complexity. From October 2024, the surcharge increased to 5% (previously 3%). Where the receiving spouse already owns another property, the transfer of the matrimonial home could trigger the surcharge unless the exemption applies. This makes formalising the court order or agreement before the property transfer a practical priority.

Worked example: A husband transfers his 50% share of the former matrimonial home (worth £600,000 in total) to the wife pursuant to a consent order. The transfer is exempt from SDLT. Had the same transfer been made voluntarily without a court order, SDLT would have been chargeable on £300,000 (the value of the interest transferred). If the wife already owned a buy-to-let property, the 5% additional dwelling surcharge would also apply, adding £15,000 to the liability. Structuring the order correctly avoids this entirely.

Pension Sharing: Tax Consequences

A pension sharing order transfers a percentage of one party's pension rights to the other party's own pension arrangement. The transfer itself is not a taxable event. No income tax, CGT or inheritance tax arises at the point of the order.

However, the pension credit created in the receiving spouse's name is then subject to their own tax position when benefits are drawn. The receiving spouse will pay income tax on pension income at their marginal rate, just as they would on any other pension in their name.

The lifetime allowance was abolished from 6 April 2024 (Finance Act 2024). In its place, two new allowances apply:

• Lump sum allowance: £268,275. This is the maximum tax-free lump sum (replacing the old 25% tax-free lump sum for those who were above the lifetime allowance).
• Lump sum and death benefit allowance: £1,073,100. This caps the combined tax-free lump sums and death benefits across all pension arrangements.

Pension sharing orders interact with the annual allowance. If the pension credit pushes the receiving spouse's total pension input above £60,000 in a single tax year, an annual allowance charge will arise. In practice, this is uncommon because pension credits are not "contributions" for annual allowance purposes under HMRC's current guidance, but carry-forward of unused annual allowance from the three preceding years should be checked as a precaution.

The practical point for solicitors is that a pension sharing order changes the receiving spouse's long-term tax position. A £500,000 pension credit looks different in the hands of a spouse with no other pension (who will use their full personal allowance and basic rate band) compared to a spouse who already holds £800,000 of pension benefits (who will pay higher-rate tax on a larger proportion of their drawdown). The forensic accountant can model these scenarios to inform settlement discussions.

Income Tax Changes on Separation

Spouses in the UK are taxed independently. On separation, each party uses their own personal allowance (currently £12,570, frozen until April 2028). The marriage allowance, which permits a non-taxpaying or basic-rate spouse to transfer £1,260 of their personal allowance to their partner, ceases to be available from the tax year following the year of separation.

Maintenance payments under post-2000 arrangements carry no tax consequences: they are not deductible for the payer and not taxable for the recipient. Child maintenance is similarly neutral. This is straightforward, but two interactions are worth noting.

First, where one spouse receives maintenance and also receives child benefit, the High Income Child Benefit Charge (HICBC) may apply if their total income exceeds £60,000 (increased from £50,000 in April 2024). Maintenance received is not counted as income for HICBC purposes, but if the receiving spouse's own earned income exceeds the threshold, they will face a clawback of child benefit at 1% for every £200 of income above £60,000.

Second, self-employed spouses going through separation need to consider their Making Tax Digital obligations. From April 2026, self-employed individuals with income above £50,000 must keep digital records and submit quarterly updates to HMRC. Separation often changes the income profile (for example, where one spouse drew income through a jointly owned business), and the MTD threshold should be reviewed as part of the financial settlement planning.

How We Work with Solicitors on Tax

We do not replace the client's personal tax adviser. Our role is to provide the forensic analysis of what the tax position is across the range of possible settlement structures, so the solicitor can factor it into negotiations and the client's tax adviser can implement the chosen structure efficiently.

In practice, we produce tax schedules showing:

• The after-tax value of each asset in the settlement (factoring in latent CGT, SDLT exposure, and pension tax)
• The after-tax value of the overall settlement under different proposed structures
• The tax consequences of transferring specific assets at specific times
• Any time-sensitive deadlines (the 3-year no-gain/no-loss window, PPR nomination deadlines, pension input periods)

These schedules allow the solicitor to present the court with a clear comparison of settlement options on a like-for-like, after-tax basis. In our experience, judges appreciate this level of clarity, and it often accelerates the process at the FDR appointment.

For a detailed discussion of matrimonial finance issues including Form E review, hidden assets and business valuations, see our dedicated service pages. For Making Tax Digital compliance guidance for self-employed clients, visit mtd.digital. Terms used on this page are defined in our glossary.

To discuss tax advice for a separating client, contact Jack Ross or call 0161 832 4451.