Guide · 5 min read
Betting tips or arbitrage: how to check a tipster, and why sure bets are not tips
Search for “sure tips” or “guaranteed winners” and you will find Telegram channels, VIP groups and subscriptions with impressive screenshots. There is no such thing as a sure tip: every prediction can be wrong, and no service can improve your chances of winning a game of chance. This guide explains what tipsters actually sell, how to check their numbers, which red flags matter, and why arbitrage is not a tip at all but a calculation with price differences.
Updated 22 October 2026
Contents
What tipsters sell
A tipster sells predictions: “home win at 1.85”, “over 2.5 goals”, usually as single bets, sometimes as an accumulator with big odds. You pay by subscription, one-off fee, or indirectly: many tipsters earn affiliate commission from the bookmakers they ask you to join, which means they earn more when you lose.
Only one question matters for you: are the odds of the tips, on average, above the fair price? Only then do the tips have positive expected value. Whether a single tip won says very little, and a winning streak says even less.
Regulators take a dim view of the market. In June 2026 the French consumer authority DGCCRF and the gambling regulator ANJ warned bettors again about tipping services. Across the EU, claiming that a product makes it easier to win a game of chance is on the blacklist of the Unfair Commercial Practices Directive (Annex I, point 16), and the UK keeps the same ban in its list of practices that are always unfair (Digital Markets, Competition and Consumers Act 2024, Schedule 20). Tipping services usually need no gambling licence, because they don't take bets, so nobody checks their records for you.
What you can check before paying a tipster
- A complete record from the first tip. Every tip with a timestamp before kick-off, the odds, the stake in units and the result. No gaps, no deleted months.
- Independent recording. Tips logged by a third-party platform before the event are more credible than screenshots or a spreadsheet the tipster maintains himself.
- Odds you could actually get. The quoted price must have been available, at the time of the tip, at a bookmaker you can use. A tip at 2.10 that drops to 1.90 once a thousand subscribers pile in only gets you 1.90.
- Closing line value. Do the tipped odds beat the fair closing price on average? A lasting positive CLV is one of the strongest signs of real skill and shows up much sooner than profit. How to measure it is in closing line value.
- Sample size. At odds around 2.00, the return after 100 tips swings by roughly ±10 percentage points, after 1,000 tips still by ±3.2. Below a few hundred tips, a return can hardly be told apart from luck. How return and yield are calculated is in betting ROI and yield, and a step-by-step check is in how to verify a tipster.
How luck looks like skill: a worked example
Suppose 100 tipsters are just guessing. Each posts 80 tips at odds of 2.00, and because of the bookmaker margin their expected return is −5%.
- After 80 tips the return swings by about ±11.2 percentage points (one standard deviation, 1 ÷ √80).
- A return of +15% sits (15 − (−5)) ÷ 11.2 = 1.8 standard deviations above the expected value. About 4 in 100 tipsters get there by chance alone.
Those four have the best screenshots and the most subscribers. The other 96 quit or start again under a new name.
The example uses simplified assumptions (independent tips, equal odds). It shows why a short winning record proves almost nothing. More in betting variance.
Arbitrage: a price difference, not a prediction
A sure bet says nothing about who will win. It uses the fact that two bookmakers price the same market differently. You back every outcome, each at the bookmaker with the best odds for it.
Bookmaker A offers 2.10 on player 1, bookmaker B offers 2.00 on player 2. 1/2.10 + 1/2.00 = 0.9762, a margin of about 2.4%.
With €100 in total stakes you place €48.78 at A and €51.22 at B. Either side returns about €102.44, whoever wins, as long as both bets stand.
That is a calculation, not a forecast, and you can check it before the match. It is still not risk-free: odds move before you place the second bet, bets get voided, and bookmakers limit winning accounts. Whether sure bets work under those conditions is answered with numbers in does arbitrage betting work?
Tipsters and arbitrage compared
| Criterion | Tipster | Arbitrage (sure bets) |
|---|---|---|
| What you get | A prediction | Odds from several bookmakers and the stake split |
| Depends on the result | Yes | No, if all bets stand |
| Checkable before the match | No, only through a long record | Yes, with an arbitrage calculator |
| Swings | Large | Small |
| Typical risk | Losing runs, cherry-picked records | Odds changes, voided bets, limits |
| What a record proves | Little until several hundred tips | Every sure bet can be recalculated on its own |
A wider overview, including systems such as the martingale, is in betting strategies compared.
Red flags in tips and tipping groups
- “Sure”, “100%”, “guaranteed”. No serious provider promises that, for tips or for sure bets.
- “Fixed matches” or inside information. Anyone who really knew a match was rigged would not sell it in a Telegram group. It is almost always a scam; see fixed matches scams.
- Only winning screenshots. Bet slips are easy to fake or to pick from many tips. Without the losers, the record is worthless.
- Pressure and payment up front. “Today only”, “last places”, payment in crypto or gift cards, fees to release an alleged payout.
- You must join specific bookmakers, often without a licence in your country. Then the tipster earns from your losses.
- Huge accumulator wins as proof. One winning ten-fold says nothing about skill.
The same tricks are used with “free sure bets”. How to spot them is in tipster scams and arbitrage betting scams.
ArbVantage sells no tips and does not improve anyone's chances of winning. The software finds price differences between bookmakers and works out your stakes; you decide every bet.
Frequently asked questions
Are there sure betting tips?
No. Every prediction can be wrong, and no service can improve the chances of winning a game of chance. Anyone who promises sure tips is advertising misleadingly. What you can check is whether the tipped odds were, over many hundreds of bets, above the fair price on average.
How do I check a tipster?
Ask for a complete, independently logged record from the first tip, with a timestamp before the event, the odds, the stake and the result. Check whether the odds were available to you, whether the tips beat the closing price on average, and whether the sample covers several hundred tips.
Why are sure bets not tips?
A sure bet does not predict who will win. It uses price differences between bookmakers and covers every outcome. If every bet is accepted at the shown odds and stands, the result is fixed in advance. Risks such as odds changes, voided bets and limits remain.
Sources
- Directive 2005/29/EC on unfair commercial practices, Annex I, point 16 (EUR-Lex)
- Digital Markets, Competition and Consumers Act 2024, Schedule 20: commercial practices that are in all circumstances unfair (legislation.gov.uk)
- DGCCRF and ANJ: warning about sports betting tipsters, June 2026 (in French)
- Kaunitz, Zhong, Kreiner (2017): Beating the bookies with their own numbers, arXiv:1710.02824
- Worked examples: our own calculations (normal approximation, independent bets), as of October 2026.
As of October 2026.
Betting involves risk, sure bets included: odds change, bets get voided and accounts get limited. Only bet money you can afford to lose. Our responsible gambling page lists free help.
Not betting, legal or tax advice. 18+. See our disclaimer.