Bankroll management means deciding in advance how much money you will use for betting and how much you will stake each time. It will not make a bet more likely to win. However, it keeps your betting at a level you can afford and helps you ride out the losing runs that come to everyone.
This guide covers setting a budget, picking a unit size, planning for losing runs and using the safer gambling tools that UK sites must offer.
The short version
- Your betting bankroll is money you can afford to lose, kept apart from bills, rent and savings.
- Flat stakes of 1% to 2% of that bankroll per bet keep your risk steady.
- Losing runs of 8 to 11 bets are normal, even at odds of 2.00 with a real edge.
- Never chase losses or top up the bankroll to win money back.
- Use deposit limits, time-outs and self-exclusion if you need them.
Start bankroll management with a budget you can afford to lose
The first rule is simple. In short, your bankroll is money you can lose in full without it hurting your life. So it should never be money for rent, bills, food, debts or savings. Instead, think of it as spending on a hobby, like a gym membership or a season ticket.
Keep the bankroll apart from your day-to-day money. For example, some people use a separate bank account or e-wallet for it. That way, you can see exactly what you have spent, and you never dip into other money by accident.
Betting is not a way to earn money, and it should not be treated as one. In fact, most bettors lose over time. Value betting is a way to judge prices, as our guide to value betting explains, but it does not promise a profit.
Unit sizes: why 1% to 2% flat works
A unit is your standard stake. Good bankroll management keeps that unit small and the same for every bet, usually 1% to 2% of your starting bankroll.
Worked example
You set aside £300 for betting this season.
- 1% unit: £3 a bet
- 2% unit: £6 a bet
- A run of 10 losers at 1% costs £30, or 10% of the bankroll
- The same run at 10% stakes would cost £300, which is all of it
As a result, with small flat stakes no single bet can do much damage. They also stop you from staking more after a win because you feel lucky, or more after a loss to get it back.
Some people size stakes with the Kelly criterion instead. That method stakes more when your edge looks bigger. Yet it depends on an exact estimate of your chance, so for most people flat stakes are the calmer choice.
How long losing runs can be
Losing runs are much longer than most people expect. To show this, we ran a simple simulation of 1,000 bets at odds of 2.00, with a 52.5% chance of winning each one. That is a 5% edge, which is more than most bettors ever have.
- The longest losing run in a typical set of 1,000 bets was about 8 in a row.
- In about 1 in 8 sets, it was 11 or more in a row.
- The biggest drop from a high point was typically about 22 units, and in 1 in 10 sets it was 36 units or more.
Note that these figures are approximate, because they come from 3,000 to 5,000 simulated runs. At longer odds, the runs get longer. For example, at odds of 3.00 the typical longest losing run in 1,000 bets was about 14.
So, with 1% units, a fall of 20% to 35% of your bankroll can happen even when your method is sound. With bigger stakes, the same run could wipe you out. Our guide to betting variance goes deeper into why this happens. You can also try the calculator below to simulate your own run of bets.
Variance simulator
Never chase losses
Chasing means raising your stakes or betting more often to win back what you lost. It is one of the clearest signs that betting is becoming a problem. It also breaks every part of bankroll management at once.
A loss is already spent. Therefore, the next bet has the same odds and the same chance as it would have had anyway. Bigger stakes only add risk. If you notice the urge to chase, that is a good moment to stop for the day, or longer.
Also, never add more money to a bankroll that has run out. Instead, take a break and decide calmly, on another day, whether you want to set aside a new budget at all.
Bankroll management tools: deposit limits and more
UK-licensed betting sites offer tools to help you stay in control. Since 31 October 2025, the Gambling Commission requires sites to prompt you to set a deposit limit before your first deposit. They must also make it easy to review that limit later.
- Deposit limits: cap what you can pay in per day, week or month. Set them to match your bankroll.
- Reality checks: on-screen reminders of how long you have been playing.
- Time-outs: a short break from an account, from a day to a few weeks.
- Self-exclusion: a longer block. GAMSTOP lets you block all UK-licensed online gambling sites at once, for free.
Larger deposits may also trigger checks on your finances. Our guide to financial risk checks explains how these work.
Keep records as part of bankroll management
First, write down every bet: date, odds, stake and result. Then, once a month, check your total spend against your budget. Our guide to betting records shows a simple layout.
Honest records stop you from remembering only the wins. In short, they show you what betting really costs you, so you can decide whether it is still fun.
Related guides
18+ only. Betting should be fun, and every bet can lose. Set a budget you can afford to lose and stick to it. For free, confidential support, visit BeGambleAware.org or call the National Gambling Helpline on 0808 8020 133.