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Betting ROI Calculator

Return on the money you actually put through the books — the number that compares one bettor's record to another's.

$

Every dollar you put through — your handle, not your bankroll.

$

Everything the books paid back, stakes on winners included.

$

ROI

+5.00%

+$500.00 on $10,000.00 put through. For context, a sustained ROI above about 5% at standard −110 pricing is exceptional — most profitable bettors live between 1% and 5%.

Net profit
+$500.00
Total returned
$10,500.00
Per $100 wagered
+$5.00

ROI divides by handle — everything wagered — not by bankroll. Two bettors with the same profit and the same bankroll can have very different ROI if one bets twice as often, and the one with the lower ROI is not necessarily doing worse.

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How it works

ROI is net profit divided by total amount wagered. The denominator is the part people get wrong: it is handle — every dollar that went through a book — not your bankroll and not the money you started with.

That choice makes ROI comparable across bettors with different bankrolls and different staking. Someone who bets $100 a hundred times has $10,000 of handle regardless of whether their bankroll is $1,000 or $50,000, and 3% ROI means the same thing for both.

The numbers to calibrate against are lower than most people expect. Beating a standard −110 market requires 52.4% winners just to break even, so a 55% record — which sounds unremarkable — is about +5% ROI and genuinely excellent. Sustained ROI above 5% at standard pricing is rare enough to be worth double-checking. Most professional bettors operate between 1% and 5%, and make money through volume rather than through hit rate.

Two things ROI cannot tell you on its own. It says nothing about variance: +4% over fifty bets is noise, and +4% over five thousand is a career. And it is not a growth rate — return on bankroll depends on how often you turn the bankroll over, so a bettor with lower ROI and higher volume can grow faster. Both figures are shown above when you supply a bankroll, because they answer different questions.

The formula

net profit = total returned − total wagered
ROI        = net profit / total wagered

per $100 wagered = ROI × 100
profit per bet   = net profit / number of bets

return on bankroll = net profit / bankroll
  (a different question — it rises with turnover
   even when the edge does not)

Handle in the denominator, not bankroll. This is what makes ROI comparable between bettors staking very different amounts.

A worked example

A season of 500 bets averaging $200, so $100,000 of handle. The books returned $104,000.

Net profit is $4,000 and ROI is +4.00% — $4 per $100 wagered, $8 per bet. At −110 pricing that corresponds to roughly a 54.5% win rate, which is a strong year.

Now the bankroll comparison. On a $10,000 bankroll that $4,000 is a +40% return, and on a $50,000 bankroll it is +8%. Same skill, same bets, same ROI — wildly different growth. Which is exactly why ROI uses handle: it isolates the quality of the betting from the size of the bankroll it was run on.

Common questions

Should ROI be calculated on bankroll or handle?
Handle — the total amount wagered. Bankroll-based return measures growth, which depends on how often you turn the bankroll over, and two bettors with identical skill can post very different numbers. Both are shown above, but ROI means the handle one.
What is a good betting ROI?
At standard −110 pricing, 1–3% is solidly profitable, 5% is exceptional, and much beyond that usually means soft markets, promotional pricing, or a sample too small to trust. Break-even at −110 is 52.4% winners, so the margins are thin by construction.
How many bets before my ROI means anything?
More than you would like. Distinguishing a 3% edge from break-even at a reasonable confidence takes well over a thousand bets. The sample size calculator gives the number for your specific edge, and closing line value gives you a faster read.
Do free bets and bonuses count in the handle?
Track them separately. A promotional stake is not your money, so including it in the denominator understates your ROI on real bets and mixes two very different sources of profit. The free bet calculator handles the promotional side.
Why is my ROI negative but my win rate above 50%?
Because at −110 you need 52.4% to break even, and because losing bets often carry bigger stakes than winning ones. Win rate ignores both the price and the stake — ROI does not, which is why it is the more honest number.

The guide behind this calculator

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For informational and analytical purposes only. These tools do not predict outcomes and do not recommend wagers.