Nobody gets ready for an inheritance in advance. It usually turns up at a rotten time emotionally, and when there are small children in the house, the pressure to do something clever with the money will hit almost straight away. There might be five or six figures in your current account by the end of the month, and the pull will either be to act fast or to freeze completely and touch none of it. Both reactions are normal, and plenty of people swing between the two for weeks.
A rough plan will help more than anything else, even one that takes a few months to come together. Most parents end up weighing up the same handful of options, from clearing debt to investing a lump sum, and the same mistakes crop up again and again, nearly always because somebody moved too quickly.
Don't Rush Into Anything Big
This advice comes up constantly for good reason. Financial professionals will usually suggest waiting three to six months before making any major decision with inherited money. Not because a quick decision is always a bad one, but grief, exhaustion, and the daily chaos of family life will never add up to good conditions for clear thinking.
Put the money into a savings account so it earns something in the meantime. Nothing is lost by waiting, and those extra months will give you a chance to work out what actually matters to your family before anything gets committed.
Clear High-Interest Debt First
Credit card balances, car finance at a steep rate, a personal loan you've been chipping away at for years: paying those off will almost always be the strongest move available to you. Credit card interest can run at 20% or more, and no savings account or investment will match that reliably, year after year.
That doesn't mean every penny has to go into debt. But clearing the expensive stuff will free up money each month, and that breathing room counts for a lot when there are children in the house and the outgoings never really stop.
The Mortgage Question
Overpaying the mortgage will be one of the first ideas most parents land on, and the instinct behind it is a good one. Even a modest lump sum can knock years off the term and save thousands in interest. Most lenders will allow overpayments of up to 10% a year without early repayment charges, so check your terms before you commit anything bigger than that.
If your rate is low, though, the maths might point towards investing instead. Personal circumstances will matter more than the numbers here. A smaller mortgage that helps you sleep at night can be worth more to you than a slightly better return on a spreadsheet, and that's a perfectly good reason to go ahead.
Keep an Emergency Buffer
Before anything else, put aside enough to cover three to six months of household costs. Anyone with young kids knows how often something goes wrong, whether that's the boiler giving up in November or the car failing its MOT. A cash buffer will mean you don't have to sell investments or borrow again when it happens.
If there's already an emergency fund in place, top it up while you can. If there isn't one, this will be the moment to build it.
How to Invest a Meaningful Lump Sum
Once the debt, the mortgage and the rainy day fund have been dealt with, there might still be a serious amount left over. This is where a lot of parents get stuck. Investing a five- or six-figure inheritance is a very different thing from paying £100 a month into an ISA, because the money carries emotional weight and most people want it handled properly without giving up all control of it.
Families in this position will often do better with advisory investment management built around their own goals, whether that's school fees, long-term wealth, or a bit of both. Having one person who knows your situation, instead of a call center and a form, makes a real difference once the decisions start getting personal.
The annual ISA allowance shouldn't go to waste either. For the 2026/27 tax year, you can put up to £20,000 into an ISA, and any gains inside it will be tax-free. If your partner has an allowance too, that's £40,000 between you in a single year.
Put Something Aside for the Children
Plenty of parents who inherit from a grandparent will want some of that money to carry on down the line, and a Junior ISA is the simplest way to do it. You can pay in up to £9,000 per child each tax year, and the money stays locked away until they turn 18.
Even small amounts will compound over that sort of timescale. A three-year-old today won't touch the pot for 15 years, which gives it a long run at growth, and there's something fitting about money from one generation quietly moving down to the next.
Spend Some on the Family Too
Financial articles tend to skip this bit. If the inheritance pays for a holiday you've been putting off for years, or an extension that gives everyone a bit more room to breathe, that money has done a real job. Your family gets the benefit now, while the children are still young enough to enjoy it.
The trap is spending without any limits on it, so set a budget before you start. Decide how much you're comfortable parting with, then go and spend it without the guilt hanging over you.
A Clear Head Will Serve You Better Than Speed
An inheritance can change a family's finances overnight, though only when there's been enough time to think it through properly. Clear the expensive debt, build the safety net, then work out how the rest gets split between investing and spending. There's no single right answer to any of it, and the plan that works will be the one that fits your family's actual life instead of somebody else's formula.
Important note: Your investments may decrease in value as well as increase, and any income from them can vary. You might not recover the amount you initially invested. Past performance doesn't serve as a guarantee of future outcomes.
