Divorce Settlement Calculator (UK)Free Asset Split & Pot Estimate

How is a divorce settlement calculated in the UK?

Divorce settlements in England and Wales start from a 50/50 split of matrimonial assets built up during the marriage, then adjust where either person's reasonable housing and income needs — especially for dependent children — cannot be met from half. Rather than a rigid statutory formula, courts apply a three-step framework drawn from section 25 of the Matrimonial Causes Act 1973 and landmark cases such as White v White [2000] UKHL 54 and Miller v Miller; McFarlane v McFarlane [2006] UKHL 24.

1. Step 1 — Value the net matrimonial pot (Part 2 of Form E): Combine property equity, bank balances, ISAs, investments, pension Cash Equivalent Transfer Values (CETVs) and net business assets, whether held jointly or in sole names, then deduct genuine marital debts. For small businesses, value net assets or shares rather than turnover — see our self-employed Form E valuation guide and soft family loan rules.
2. Step 2 — Apply the 50/50 sharing baseline: Equal sharing treats the financial earner and the homemaker or primary carer identically. There is no bonus for earning the higher salary.
3. Step 3 — Cross-check against housing and income needs (Part 3 of Form E): Ask whether both households — and any minor children — can realistically be housed and funded on a 50/50 split. Where half the capital leaves one person unable to rehouse, needs override strict arithmetic.

Property division in a divorce settlement

The family home is almost always treated as a matrimonial asset even if the deeds and mortgage sit in only one spouse's name, because it was the central home of the marriage. What matters in negotiation is not the asking price on property portals, but net equity: realistic market value minus the outstanding mortgage, any early repayment charge and notional sale costs (typically around 2–3%).

Once net equity is agreed — see our divorce house valuation guide — property division usually follows one of four structures:

• Sell and divide the net proceeds: The cleanest route when neither spouse can carry the mortgage alone or release enough deposit for two homes otherwise.
• Transfer of equity and buyout: One spouse takes the property and mortgage into their sole name and pays the departing spouse a lump sum for their share. Check whether the remortgage stacks up in the house split and buyout calculator and read who pays the mortgage after separation while the transfer is pending.
• Offsetting against pensions or savings: One spouse keeps more (or all) of the house equity while the other retains a larger pension pot or investment portfolio.
• Deferred sale (Mesher order): One parent stays in the home with the children until a fixed trigger (such as the youngest turning 18 or finishing secondary school), when the house is sold and the equity divided in the ordered percentages.

Transfers of the family home made under a court financial order are generally exempt from Stamp Duty Land Tax, and since April 2023 separating spouses have up to three tax years after the tax year of separation (or any time under a formal divorce court order) to transfer property on a no-gain, no-loss basis for Capital Gains Tax. Take tax advice promptly where buy-to-let properties or long separations are involved.

Lump sum orders: how cash equalises a divorce split

A lump sum order under section 23 of the Matrimonial Causes Act 1973 is a court-enforceable requirement for one spouse to pay a fixed amount of money to the other. Because real households rarely hold all their wealth in neat cash accounts, lump sums are the practical mechanism used to balance a settlement without forcing every asset to be sold.

• Buying out the family home: If net house equity is £180,000 and you agree a 50/50 split, the spouse keeping the house pays a £90,000 lump sum (funded from savings, extra mortgage borrowing, or both) on completion of the transfer of equity.
• Preserving a business or illiquid asset: Where one spouse runs a trading company or holds investments that would be costly to liquidate, a lump sum (sometimes paid in dated instalments secured against shares or property) compensates the other spouse for their interest.
• Capitalising spousal maintenance for a clean break: Instead of paying monthly spousal maintenance for several years, a higher earner with sufficient capital can pay an upfront lump sum so both parties achieve an immediate clean break order. Explore an illustrative monthly figure with the spousal maintenance calculator.

Always test liquidity before proposing or accepting a lump sum. A settlement that looks equal on total net worth fails in practice if the paying spouse has to raise £120,000 in cash when 80% of their wealth sits inside a pension that cannot be touched until age 55 or 57.

Departures from 50/50: when and why settlements move to 60/40 or further

Most couples who depart from 50/50 do so because equal division of a modest or medium-sized pot leaves one household — usually the lower earner or primary carer of the children — unable to buy or rent a suitable home. Under section 25, the court's first consideration is the welfare of any child of the family under 18, followed closely by each party's housing needs, income and mortgage capacity.

Outside housing and income needs, four other situations regularly move the split away from 50/50:

• Non-matrimonial property & inheritance: Following the Supreme Court's decision in Standish v Standish [2025] UKSC 26, the equal-sharing principle applies to matrimonial property, not to inherited or pre-marital wealth that has been kept separate — unless dipping into it is required to meet reasonable needs.
• Short, childless marriages: Where a short marriage ends with no children and largely separate finances, courts are more willing to ring-fence pre-marital capital or unilateral contributions.
• Qualifying nuptial agreements: Under Radmacher v Granatino, a freely agreed prenuptial or postnuptial agreement entered into with disclosure and advice will usually be followed provided it still meets both parties' needs.
• Age, health and disability: Long-term illness, disability or closeness to retirement reduces a spouse's ability to rebuild capital or earn, increasing the capital required now.

Pensions vs cash: why £100,000 of CETV is not £100,000 in the bank

In a longer marriage, pensions often match or exceed the equity in the home. Imagine £180,000 of home equity, £25,000 of savings, £420,000 of combined pensions and £15,000 of debts (a £610,000 net pot). A raw 50/50 split is £305,000 each — yet one spouse taking £190,000 of immediate housing capital and £115,000 of pension is in a very different position from the other keeping £305,000 almost entirely locked inside a pension taxed on withdrawal.

That is why this calculator separates liquid capital from pension CETV and illustrates a 70–85% cash-equivalent offset range (75% midpoint). Where pensions are large or include NHS, teacher, civil service, police or final-salary schemes, model both pension sharing and offsetting in the pension divorce calculator and read our Form E pensions section guide.

What this calculator cannot decide — and what to do next

No online calculator can predict a judge's exact order, value a defined-benefit pension or trading company, calculate tax on asset disposals, or spot undisclosed assets. Use your snapshot here to orient yourself, gather the supporting Form E documents, and turn estimates into verified financial disclosure before committing to a consent order and Form D81.