Divorce used to come with a tax trap so sharp it shaped settlement timetables: separating couples had only until the end of the tax year of separation to transfer assets without crystallising capital gains — separate in February and you had weeks. The rules changed in April 2023, and the current regime is genuinely humane: no-gain-no-loss treatment runs until the earlier of the end of the third tax year after separation and the date the court grants the divorce — and without any time limit at all for transfers made under a formal divorce or separation agreement or court order. The trap is gone; what remains is a set of decisions about who takes which asset, carrying whose gain.
How the no-gain-no-loss window works
Transfers between spouses and civil partners are normally no-gain-no-loss: the recipient takes the asset at the transferor's original base cost, and no CGT arises on the transfer itself. Separation used to end that treatment almost immediately; now informal transfers keep it until the earlier of the end of the third tax year after the year you stopped living together and the date of the divorce itself — the second limb matters, because once the marriage or civil partnership legally ends you are no longer spouses, and the spousal rule has nothing to bite on. Transfers made under a formal separation or divorce agreement or court order, by contrast, get no-gain-no-loss treatment indefinitely. In practice that makes the formal route the safe one for anything completing after decree absolute, and it is why settlement drafting should capture the asset transfers explicitly.
The essential nuance is what no-gain-no-loss means: the tax is deferred, not erased. The spouse who takes the buy-to-let takes its 2009 base cost with it, and the full historic gain lands on them at eventual sale. Two settlement assets of equal market value can carry wildly different embedded tax bills — £400,000 of cash is worth £400,000, while a £400,000 rental flat with a £250,000 built-in gain is worth perhaps £340,000 after the CGT its new owner will one day pay. Fair settlements price the latent tax; rushed ones discover it years later. This single point — comparing assets net of embedded gains — is where accountants earn their place alongside the family lawyers.
The family home: better protected than people fear
The home is usually covered by private residence relief anyway, but divorce creates the classic gap: one spouse moves out, the sale or transfer happens years later, and their relief clock has stopped. Two rules close it. The final nine months of ownership are always relieved. And beyond that, the departing spouse can elect (under s225B) to keep full relief on a later transfer or sale — covering the standard scenarios: the home transferred to the remaining spouse under the settlement, and Mesher-order arrangements where sale is deferred until the children are grown, with the departed spouse's share still relieved when the sale finally happens. The election has conditions — broadly, the property stays the ex-spouse's main home and the departing spouse claims no other PPR on the overlap — so it is a decision to make deliberately, especially for someone buying a new home meanwhile.
The rest of the settlement map
- SDLT (England and Northern Ireland; Scotland and Wales have their own equivalents): property transfers between the couple under a divorce court order or formal agreement are exempt — no land tax, no return — one of the cleaner corners of the process;
- Pension sharing orders move pension rights without CGT consequences — pensions are not chargeable assets — though the 2027 IHT change makes the pension's destination newly relevant to estate planning on both sides;
- Business interests are where settlements get technical: transferring shares in the family company within the window is no-gain-no-loss, but the receiving spouse's future BADR position, the company's ability to fund a buyout, and valuation all need working before the consent order fixes them — our exit planning and valuations teams sit in exactly these settlements;
- Maintenance and cash carry no CGT at all — cash is not a chargeable asset — which is partly why liquidity-versus-assets trades dominate settlement design.
Sequencing still matters
The generous window removed the panic, not the planning. The date of separation still fixes which tax year starts the three-year clock — and "separation" here means permanently ceasing to live together as a couple, a question of fact that living at different addresses does not by itself settle, so it is worth evidencing at the time. The divorce date then caps that window regardless. Transfers intended to rely on the unlimited limb need to be genuinely under the formal agreement or order, not informal arrangements later papered over. Disposals to third parties — selling the home to split proceeds, liquidating the portfolio — get no spousal protection at all and are taxed normally, with the 60-day property reporting clock attached. And both parties' post-divorce positions (residence, rates, reliefs) diverge from the settlement date, so the tax modelling belongs in the negotiation, not after it.
Acumon works alongside family solicitors on the numbers side of settlements — embedded-gain analysis, PPR elections, business valuations and the post-settlement returns — through our CGT planning and private client teams. The 2023 rules mean tax no longer needs to drive the timetable; it still deserves a seat at the table before anything is signed.