No automatic half-share
A lottery jackpot is not automatically divided equally simply because the winner was married.
The short answer
Whether you should tell your ex depends on what still connects you
An old ex with no continuing ties is very different from an ex-spouse during unresolved divorce finances or the other parent of your children.
If there is no legal, financial or child-related reason for your former partner to know, a lottery win does not automatically create one.
If a marriage, financial settlement, court process or maintenance issue is still live, do not make the decision based on emotion or privacy alone. Take appropriate legal advice first.
The four main situations
“My ex” can mean four very different things after a lottery win
Use the relationship that exists now, not simply the fact that you once dated or married.
| Situation | Starting point | Why | What to check before acting |
|---|---|---|---|
| Old ex, no children or financial ties | Usually no practical need to tell | The former relationship itself does not normally create a reason for disclosure. | Are you telling them for a real practical reason, or because the win has reopened old emotion? |
| Still legally married | Take advice before assuming the win is private from them | Marriage and financial claims may still matter even if you are separated. | Has a financial settlement actually been completed? |
| Divorce / financial remedy ongoing | Legal advice immediately | In England and Wales, financial disclosure is full, honest and ongoing until the final financial-remedy order. | Do not conceal or move the money to avoid disclosure. |
| Ex who is your co-parent | Tell only what is genuinely relevant | The children may be affected by changes to housing, schooling, travel, maintenance or arrangements. | Keep the conversation child-focused rather than turning it into a discussion about the old relationship. |
England & Wales legal point
If divorce finances are unresolved, do not hide a lottery win from the financial process
The Family Court's current financial-remedy protocol requires full, honest and open financial disclosure. It also states that the duty is ongoing until a final financial-remedy order has been made, including disclosure of material changes after the first information was exchanged.
That means a major lottery win during unresolved financial-remedy proceedings is not something to quietly leave out. The correct step is to tell your solicitor or obtain family-law advice promptly and follow the disclosure process.
This does not mean an ex automatically receives half the jackpot. Disclosure and entitlement are different questions. The court decides the financial outcome using the relevant law and the facts of the marriage.
Jurisdiction: the detailed divorce-law sections on this page concern England and Wales. Scotland and Northern Ireland have different family-law systems, so use a solicitor qualified in the relevant jurisdiction.
Does an ex get part of the winnings?
Lottery winnings are not automatically split 50/50 on divorce
English and Welsh financial-remedy law is more complicated than “won while married = split equally” or “my ticket = entirely mine”.
The source of an asset matters, but so can what you do with it afterwards
The UK Supreme Court confirmed in Standish v Standish in 2025 that there is an important distinction between matrimonial and non-matrimonial property. The sharing principle applies to matrimonial property, while non-matrimonial property is not subject to sharing simply because it exists.
However, non-matrimonial property can still be relevant to needs, and property that starts as non-matrimonial can become matrimonial through the way the couple treats it over time — sometimes called “matrimonialisation”.
A lottery win therefore needs to be considered in context: who entered, whether the couple effectively played together, when the win happened, what financial claims remain and what happened to the money afterwards.
No automatic immunity either
Being in one person's name does not by itself settle every financial-remedy question.
What happens next matters
Using the money for shared family assets can change how the financial picture is analysed.
A real England & Wales lottery case
What S v AG tells us about lottery winnings and divorce
The 2011 High Court case S v AG (Financial Remedy: Lottery Prize) is particularly useful because it dealt directly with lottery money rather than wealth generally.
The wife won £500,000 from her half of a £1 million syndicate prize
The husband had not been part of the syndicate. The court considered whether the prize was matrimonial or non-matrimonial property and stressed that the answer depends on the facts.
The treatment changed after the money was used for the family home
Part of the winnings was used to buy and renovate the home the family occupied. The court treated that use of the money as significant when deciding the financial award.
Current context: S v AG remains useful as a lottery-specific example, while the Supreme Court's 2025 Standish judgment provides the modern higher-court explanation of matrimonial, non-matrimonial and matrimonialised property. Neither case creates a simple formula for every lottery winner.
What if the divorce is already finished?
Being divorced is not always the same as having finished the financial settlement
People often use “we are divorced” to mean several different legal stages. Before deciding the win is irrelevant to your ex, establish what has actually been completed.
Divorce final, finances still open
The end of the marriage itself does not necessarily mean every financial claim has been resolved. Get advice before assuming there is no disclosure issue.
Final financial order / clean break
Your position may be very different once financial claims have been finally dealt with. The wording and timing of the order matter, so check it if the win is close to the settlement.
Do not rely on memory
If you are unsure whether there is a final financial order, find the paperwork or ask the solicitor who handled the divorce.
If your ex is also your co-parent
The useful question is what the children need you to handle differently
Co-parenting does not automatically give an ex-partner full visibility into every part of your finances. But a major win can create practical changes that affect the children.
Housing
A move, second home or change in where the children stay may require practical discussion.
Schooling
If you are considering private school, relocation or a major change in education, the parenting arrangements may matter more than the headline jackpot.
Travel and routine
More travel or changed work patterns may alter handovers, holidays and childcare arrangements.
Money around the child
Avoid making the child the messenger for adult financial questions, promises or arguments.
Keep the conversation narrow: if the children are the reason the ex needs information, discuss the change that affects the children. You do not automatically need to turn that into a full explanation of your wealth.
Child maintenance
Can a lottery win affect Child Maintenance Service calculations?
Potentially — but not simply by treating the jackpot as weekly wages.
The main calculation uses gross income
The Child Maintenance Service normally starts with gross weekly income information.
Unearned income can be considered
In England, Scotland and Wales, a variation can include qualifying unearned income such as interest, dividends or rental income where the rules and thresholds are met.
Assets can matter too
The current variation guidance allows notional income to be considered from certain assets worth £31,250 or more. The actual effect depends on the facts and the maintenance arrangement.
Important: this is a reason to check your maintenance position, not a reason to hand an ex unrestricted access to your finances. If the win is large, take family-law or child-maintenance advice based on your actual arrangement.
If there is no legal reason to tell them
Ask what you expect to happen after your ex knows
The original version of this page leaned heavily on revenge and jealousy. A calmer question is more useful: what practical result are you trying to achieve?
You want to share good news
If you still have a friendly relationship, that may be understandable — but decide whether the information adds anything useful to the relationship you have now.
You want them to regret leaving
That may feel satisfying in the moment, but it creates a new connection to someone you may otherwise have moved on from.
You feel guilty not telling them
An old relationship does not automatically create a continuing right to know about your private finances.
You expect visible changes
If you share children or social circles, you may decide some limited disclosure is easier than allowing rumours to do the explaining.
If a conversation is genuinely needed
Keep the disclosure factual, limited and connected to the reason they need to know
A necessary conversation does not have to become a review of the old relationship.
During unresolved divorce finances
Better approach: use the formal legal and disclosure process. Let your solicitor advise what must be communicated and when.
For a co-parenting change
Try: “My financial situation has changed and I want to discuss the part that affects the children. I am keeping the rest private for now.”
If an old ex hears through someone else
Try: “Yes, I had some good financial news. I am keeping the details private, but I appreciate your good wishes.”
Lottery winner privacy
UK National Lottery privacy does not override legal disclosure duties
Current National Lottery directions say a winner's identity must not be disclosed without their consent unless disclosure is required by law.
You can usually choose whether to go public
Claiming a National Lottery prize and consenting to publicity are separate decisions.
Court disclosure is different
A privacy choice with the lottery operator does not allow you to omit material assets from financial-remedy proceedings where disclosure is legally required.
Use professional support early
The National Lottery currently states that winners of £1 million or more receive access to legal and financial specialists and a wellbeing expert, regardless of publicity.
Printable checklist
Before you tell — or decide not to tell — your ex
The checklist separates an emotional disclosure decision from a situation where the win may have legal or child-related consequences.
- Are we still legally married?
- Are divorce financial proceedings or negotiations still open?
- Has a final financial-remedy or clean-break order actually been made?
- Do I need to tell my solicitor about the win before anyone else?
- Have I avoided moving or gifting money simply to keep it outside the financial process?
- Do we share children?
- Will the win genuinely change the children's housing, school, travel or care arrangements?
- Could child maintenance need to be reviewed?
- If there is no legal or child-related reason, why do I want my ex to know?
- Would I still tell them if I knew their reaction would be neutral?
- What is the smallest amount of information needed for the practical issue?
- Have I decided what remains private?
Related MLL winner guides
Continue through the disclosure and relationship cluster
Questions answered
Lottery wins, ex-partners and divorce: FAQs
Plain-English answers about old exes, ex-spouses, unresolved divorce finances, co-parenting, child maintenance and privacy.
Should I tell my ex-partner if I win the lottery?
If the relationship is fully over and there are no children, legal proceedings or continuing financial ties, there may be no practical reason to tell them. If divorce finances, child maintenance or co-parenting are involved, the answer can be different.
Do I have to tell my ex-husband or ex-wife about a lottery win?
If financial remedy proceedings are ongoing in England and Wales, parties have an ongoing duty to give full and honest disclosure of material financial changes until a final financial-remedy order is made. Get family-law advice promptly rather than deciding to hide the win.
What if I win while divorce financial proceedings are still ongoing?
Tell your solicitor or obtain family-law advice immediately. In England and Wales, the duty of financial disclosure is ongoing until the final financial-remedy order. How the lottery money is ultimately treated is fact-specific.
Does my ex automatically get half of my lottery winnings?
No. There is no automatic rule that every lottery win is divided 50/50. English and Welsh financial-remedy law distinguishes matrimonial and non-matrimonial property, and courts also consider needs and other circumstances. Lottery cases are highly fact-specific.
Does it matter who bought the winning lottery ticket?
It can matter, but it is not the only issue in a divorce. The 2011 England and Wales case S v AG treated the character of lottery winnings as fact-specific, including whether the parties were effectively acting together and what later happened to the money.
What if I use lottery winnings to buy a family home?
That can change the legal picture. In S v AG, lottery money that had initially been treated as non-matrimonial was used to buy the family home, and the court treated the home differently. Current Supreme Court law also recognises that non-matrimonial property can become matrimonial through the way parties treat it over time.
What if my divorce is already final?
A final divorce does not always answer the financial question. Check whether there is a final financial order or clean-break order and whether any financial claims remain open. If the timing is close to the settlement, take advice before assuming the win is irrelevant.
Should I tell my ex if we have children together?
Not necessarily simply because they are your ex. The useful question is whether the win creates a real child-related issue such as changes to housing, schooling, travel, maintenance or arrangements that need discussion.
Can a lottery win affect child maintenance?
Potentially. For the Child Maintenance Service in England, Scotland and Wales, a variation can take account of certain unearned income and notional income from qualifying assets. The lump sum itself is not simply treated as ordinary wages, so get advice on your actual arrangement.
Does my co-parent need to know the exact amount I won?
Not automatically. If some financial information must be disclosed for legal, maintenance or court reasons, disclose what is required. Otherwise, a co-parenting conversation can often focus on the children's practical arrangements rather than the full value of your private finances.
Should I tell an ex just because they dumped me?
There is usually no practical benefit in disclosing a win simply for validation, revenge or to make an ex regret the breakup. If there is no legal, financial or child-related reason to tell them, consider leaving the old relationship closed.
Can I keep a UK National Lottery win private?
Yes. Current National Lottery directions state that a winner's identity must not be disclosed without their consent unless disclosure is required by law. That privacy choice does not override legal disclosure duties in court or financial proceedings.
What should I do before contacting an ex about the win?
Work out which category you are in: no ties, ongoing divorce, unresolved finances or co-parenting. If there is any active legal or financial connection, take advice before contacting the ex or moving the money.
Should I move or give away the money before a divorce is finished?
Do not try to hide, transfer or dispose of assets to avoid financial disclosure. In England and Wales, disclosure must be full, honest and open during financial-remedy proceedings. Get legal advice before making significant moves.
Does this legal guidance apply across the whole UK?
No. The detailed divorce and financial-remedy sections on this page focus on England and Wales. Scotland and Northern Ireland have different family-law systems. Child Maintenance Service information cited here applies to England, Scotland and Wales unless stated otherwise.
Official guidance and case law
Research and legal sources used for this guide
The legal sections deliberately distinguish disclosure from entitlement. A duty to reveal a material financial change during proceedings does not tell you what share, if any, an ex-spouse will ultimately receive.
- Justice UK — Practice Direction 9A. Current England and Wales financial-remedy protocol: full, honest and open disclosure, with an ongoing duty until a final financial-remedy order.
- HMCTS — Form E. Current financial statement used for divorce financial orders in England and Wales.
- UK Supreme Court — Standish v Standish [2025] UKSC 26. Current higher-court guidance on matrimonial and non-matrimonial property, the sharing principle and matrimonialisation.
- S v AG (Financial Remedy: Lottery Prize) [2011] EWHC 2637 (Fam). England and Wales High Court case considering the treatment of a lottery prize in divorce proceedings.
- GOV.UK — Child Maintenance Service variations. Current England, Scotland and Wales rules for additional unearned income and notional income from qualifying assets.
- Gambling Commission — National Lottery directions. Current rule that winner identity must not be disclosed without consent unless required by law.
- The National Lottery — winner support. Current information on legal, financial and wellbeing support for £1m+ winners.