Most bettors lose money for one simple reason: they have no plan for how much to stake. A bankroll is the fixed pool of money you set aside for betting, separate from your rent, bills, and savings, and managing it well is the difference between surviving a losing run and going broke. This guide shows you how to size a bankroll, set your unit size, and choose a staking plan that fits how you actually bet.

Start by choosing an amount you could lose in full without it affecting your daily life. For most recreational bettors, a sensible starting range is an amount equal to a few weeks of entertainment spending, kept in a separate account so it never mixes with everyday money. Write the number down. If you cannot set aside money specifically for betting, you should not be betting at all, and if gambling is causing financial stress, seek help from a responsible gambling service rather than chasing losses.

Your unit is the standard size of one bet, usually 1 to 2 percent of your bankroll. On a $1,000 bankroll, one unit is $10 to $20. On a $500 bankroll, one unit is $5 to $10. Staking in units instead of dollars keeps your risk consistent as your bankroll grows or shrinks, and it makes your results easy to measure: if you placed 100 bets at one unit each, your return on investment is your net profit divided by your total staked. Most professionals cap a single bet at 1 to 3 units and never go above 5 units on any one selection.

Flat staking is the simplest plan: you bet the same amount on every wager, regardless of confidence. It is the best choice for beginners because it removes the temptation to stake big on a so-called sure thing. Percentage staking adjusts the stake to a fixed share of your current bankroll, so stakes shrink automatically during losing runs and grow during winning ones. The Kelly Criterion calculates the optimal stake from your estimated edge, but full Kelly is aggressive, so most experienced bettors use a quarter or half of the Kelly figure. To understand how the Kelly formula works in practice, read How Does the Kelly Criterion Work in Sports Betting?, and to learn why your edge matters more than your win rate, see What Is Expected Value in Sports Betting?.

Losing runs are normal, and your staking plan is what gets you through them. At 1 percent stakes, even 50 consecutive losses only reduce your bankroll by half, while at 10 percent stakes, seven consecutive losses do the same damage. That is why the standard advice is to keep stakes small and never increase them after a loss. Chasing losses by doubling stakes is the fastest way to destroy a bankroll, and no staking system can turn a negative-expectation bet into a profitable one.

Log every bet you place: the date, the market, the odds, the stake, and the result. Without a record, you cannot tell skill from luck, and you cannot tell whether your staking plan is working. Review the log monthly, check your return on investment, and adjust your unit size as your bankroll changes. If you want a deeper grounding in the maths behind the odds themselves, start with our guide on How Do Football Betting Odds Work, which explains how bookmakers set prices and where the value hides.

A simple spreadsheet is all you need to track your bankroll properly. Set up columns for the date, the event, the market, the odds, the stake in units, the result, and the profit or loss, then add a running total of your bankroll and your return on investment. Review it weekly rather than after every bet, because daily swings will tempt you to change a plan that is working. Over time the spreadsheet becomes your most honest advisor: it shows which markets you actually profit from, which ones you lose on, and whether your staking plan is protecting you during losing runs.