How to Calculate Tipster ROI
ROI is the single most useful number for judging a tipster. Here's exactly how to calculate it, the mistakes that inflate it, and how to work out your true return after costs.
If you only learn one number for judging tipsters, make it ROI — return on investment. It tells you how much profit a tipster generates for every pound staked, which lets you compare services fairly regardless of how big their stakes are or how many bets they advise. This guide shows you precisely how to calculate ROI, the traps that make it look better than it is, and how to find your real return once subscription fees are included.
The basic ROI formula
ROI is simply total profit divided by total staked, expressed as a percentage: ROI = (Total Profit / Total Staked) × 100. If a tipster advised 500 points of bets over a period and returned a profit of 40 points, the ROI is (40 / 500) × 100 = 8%.
The beauty of ROI is that it's stake-agnostic. It doesn't matter whether you bet £1 or £100 a point — the percentage return on turnover is the same. That's what makes it the fairest way to compare two tipsters who stake very differently, and why it's far more informative than a raw profit figure.
Points, stakes and level vs advised staking
Most tipsters express results in 'points' rather than pounds so that followers can scale to their own bankroll. One point is one unit of your chosen stake. To calculate ROI you need both the total points staked and the total points profit — not just the profit, which on its own is meaningless without knowing how much was risked to achieve it.
Watch whether results are to level stakes (the same stake on every bet) or advised/variable stakes (bigger stakes on more confident bets). Variable staking can flatter ROI if the biggest bets happened to win, so level-stakes ROI is usually the more conservative and comparable figure.
The advised-odds trap
ROI is only as honest as the prices behind it. A tipster who calculates ROI using the biggest odds that briefly appeared, or Betfair SP before commission, will report a far higher figure than any follower could actually achieve. Always ask whether the ROI is to advised prices you could realistically have taken at the time.
As a sanity check, a genuine long-term ROI for a skilled tipster is typically a single-digit to low-double-digit percentage. If someone claims 40% or 50% ROI over a large sample, the odds are that the prices used are unachievable, the sample is tiny, or the losers have been quietly removed.
Working out your true ROI after costs
The ROI a tipster advertises ignores what you pay them. Your real return has to subtract the subscription fee. Suppose you stake £10 a point, place 500 points in a month (£5,000 turnover) and the tipster's 8% ROI produces £400 profit — but the subscription cost £150. Your net profit is £250, and your true ROI is (250 / 5000) × 100 = 5%.
This is why subscription cost matters so much for smaller stakers: a fixed monthly fee eats a far larger share of a modest bankroll's profit. Always model your own turnover and stake size against the fee before subscribing, because a headline ROI can turn negative once costs are included.
Why ROI needs a sample size to mean anything
A final, crucial point: ROI over ten bets is noise, not signal. A couple of lucky winners can produce a huge ROI that vanishes over the next hundred bets. Only trust an ROI figure that's built on a large sample — ideally several hundred to a few thousand bets — and that has survived at least one meaningful losing run.
When you compare tipsters on TipsterCheck, treat ROI alongside sample size, staking method and independent reviews rather than in isolation. A modest, well-evidenced ROI over 2,000 bets is worth far more than a spectacular one over 50.
TipsterCheck Editorial Team Independent
Independent betting analysts
TipsterCheck's editorial team independently researches sports betting tipsters and betting markets. We don't sell tips and we never take payment to influence a rating — our guidance is built on transparent track records, verified user reviews and our published scoring methodology.
Last reviewed 17 August 2026 · Written and fact-checked against our review policy and scoring methodology.
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