Matched betting is a way of using bookmakers’ free bets and sign-up offers to make a small, near-guaranteed profit. You back a result with the bookmaker and “lay” the same result at a betting exchange, so whichever way the match goes you end up at roughly the same place. Here’s how it works, a worked example with real numbers, the risks nobody mentions, and the two services we recommend if you want to try it.
Matched betting in 30 seconds
- Back a selection with a bookmaker, e.g. Arsenal to win.
- Lay the same selection at a betting exchange, i.e. bet on Arsenal not winning.
- The two bets cancel each other out, so you lose a few pence on the qualifying bet whatever happens.
- Then you do the same with the free bet, and lock in most of its value as cash.
- A calculator works out the exact lay stake for you, and you need an exchange account and a little starting money.
How matched betting works
A normal bet has two possible outcomes for you: win or lose. Matched betting removes the guesswork by covering both outcomes. The bookmaker side is your “back” bet: you’re backing something to happen. The exchange side is your “lay” bet: you’re acting as the bookmaker and taking a bet from someone else that it won’t happen.
If you size the lay bet correctly, the money you win on one side almost exactly cancels out what you lose on the other. On its own that’s pointless. The trick is the bookmaker’s free bet: once you have one, you can back and lay again, and because the free bet stake isn’t your money, you keep most of its value whichever side wins.
What you need to start
- A betting exchange account. Betfair Exchange, Smarkets and Matchbook are the main UK exchanges. Commission is charged on exchange winnings, typically 2–5%.
- Some starting money. £50–£100 is enough to cover a qualifying bet plus the exchange “liability” (the amount you could lose on a lay bet).
- A matched betting calculator. It works out the lay stake so both sides balance. The services below include one, along with an “oddsmatcher” that finds the closest back and lay prices.
- A debit card. Most welcome offers exclude e-wallets such as PayPal or Skrill, so deposit with a debit card to be safe. Our qualifying bets guide covers the other rules.
A worked matched betting example
Take a typical “bet £10, get a £10 free bet” offer. The figures below assume 2% exchange commission.
Step 1: the qualifying bet
You back Arsenal to win at 3.0 with the bookmaker for £10, and lay Arsenal at 3.1 on the exchange. The calculator gives a lay stake of £9.74, with a liability of £20.45.
| Result | Bookmaker | Exchange | Overall |
|---|---|---|---|
| Arsenal win | +£20.00 | −£20.45 | −£0.45 |
| Arsenal don’t win | −£10.00 | +£9.55 | −£0.45 |
You’re down 45p either way. That small “qualifying loss” is the cost of unlocking the free bet.
Step 2: the free bet
Now use the £10 free bet (stake not returned) on a selection at 5.0 and lay it at 5.2. The lay stake is £7.72, with a liability of £32.43.
| Result | Bookmaker | Exchange | Overall |
|---|---|---|---|
| Your selection wins | +£40.00 | −£32.43 | +£7.57 |
| Your selection loses | £0 | +£7.57 | +£7.57 |
Take off the 45p qualifying loss and the offer has made you about £7.12, whatever the result. That’s why we show an estimated value on every offer rather than the headline amount: a £10 free bet is worth roughly £7–£8 in cash when it’s matched.
Two things improve the numbers. Use free bets at higher odds (4.0–8.0 is the sweet spot), where the “stake not returned” rule costs you less. And keep the back and lay odds as close together as you can, which is exactly what an oddsmatcher does.
Is matched betting legal and tax-free?
Yes. Matched betting is legal in the UK: you’re simply placing bets and taking up offers the bookmakers advertise. Gambling winnings aren’t taxed in the UK, so matched betting profits aren’t either. Bookmakers don’t like it, though, and they can limit what you’re allowed to bet or stop sending you offers. Your account is still yours and your balance is still withdrawable, but the profitable promotions dry up. Doing it to excess (only ever using offers, always at big odds) makes that happen sooner.
The risks of matched betting
- Mistakes cost money. Laying the wrong selection, getting the stake wrong or letting odds move before the lay is matched can turn a 45p loss into a £20 one. Double-check before you confirm.
- Offer terms can void the free bet. Wrong payment method, cashing out, or odds below the minimum and the free bet never arrives, leaving you with only the qualifying loss.
- You need liability in the exchange. Laying at high odds ties up a lot of money until the event settles.
- Bank statements. Frequent gambling transactions can be noticed by mortgage lenders, so some people pause before applying for credit.
- It’s still gambling. If you find yourself placing bets that aren’t matched, or chasing losses, stop. Our responsible gambling page has free tools and support.
The best matched betting services
You can learn matched betting from free guides, but a paid service saves a lot of time: it lists every current offer with step-by-step instructions, and the oddsmatcher finds the best back and lay prices in seconds. Both of the services below offer a free trial, so you can see which suits you. They’re affiliate links: we may earn a commission if you join, at no extra cost to you.
OddsMonkey
One of the longest-running UK matched betting sites (the team behind the original OddsMatcher, founded in 2011) with more than 500,000 people signed up. The free trial walks you through your first offers, and paid plans start with Starter at £39.99 a month or £249.99 a year. Higher tiers add casino offers and value-betting tools. OddsMonkey offers a 14-day money-back guarantee.
Outplayed
Formerly Profit Accumulator, one of the original matched betting services, rebranded as Outplayed in 2024. Its 7-day free trial unlocks full Platinum access, including every sportsbook sign-up offer, the oddsmatcher and the matched betting calculator. Paid plans start at Platinum, £249.99 a year, with Diamond adding casino offers.
| OddsMonkey | Outplayed | |
|---|---|---|
| Free trial | Yes | Yes, 7 days |
| Entry plan | Starter: £39.99/month or £249.99/year | Platinum: £249.99/year |
| Oddsmatcher and calculator | Yes | Yes |
| Casino offers | Advanced plan and above | Diamond plan and above |
| Best for | Beginners who want lots of hand-holding and a big community | Beginners who want a clean, simple offer list and app |
Prices and trial terms last checked on 28 October 2026, against each service’s own website. They change from time to time, so check the current price when you sign up.
Best offers to start matched betting with
Start with an easy offer: one qualifying bet and free bets you can use on any market. These are the easiest to match right now:
Free bet offers
Paddy Power Sports Easy Low risk
£30 in free bets
18+ · Code YSKAST · £5 bet at evens+ · £30 free bets · 30 days · Debit/Apple Pay/bank
Full T&Cs
18+ · New Customer offer - Use promo code YSKAST. Place a min £5 bet on the sportsbook at odds of min EVS (2.0) and get £30 in free bets. Free bet rewards valid for 30 days. Only deposits via Pay by Bank, Debit Cards & Apple Pay will qualify for this offer. T&Cs apply. Please Gamble Responsibly
Kwiff Sports Easy Very low risk
£40 in free bets
18+ · £10 bet at 2.0+ in 5 days · 4 x £10 free bets (3+ legs each) · 7-day expiry
Full T&Cs
New UK customers. £10 cash bet, min. odds 2.0, in 5 days of deposit. Get 4x £10 Free Bets: Single, 2 Accas & Bet Builder (3+ legs each). Excl. cashout, E/W, Multis, Ineligible Markets & Odds Boosts. 7-day expiry. T&Cs apply. 18+ | GambleAware
Unibet Sports Easy Very low risk
£40 in free bets
18+ · Opt in · Dep & bet £20 at 2.0+ in 7 days · £40 free bets · 7 days · Debit/bank only
Full T&Cs
18+ | GambleAware.org. New GB customers only. Opt in, deposit and Bet £20+ on sports at min odds of 2.0+ (1/1) for £40 in Free Bets within 7 days of registration. Debit cards or instant bank transfers only. Free bets expire within 7 days of issue. Geographical restrictions and T&C’s apply.
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Matched betting FAQ
The maths is close to risk free when it’s done correctly, because both outcomes are covered. The real risk is human error: laying the wrong selection or stake, or missing an offer term. Start with small, simple offers and use a calculator every time. Sign-up offers alone are typically worth several hundred pounds in total, because each £10–£30 free bet converts to roughly 70–80% of its value. After that, profits come from ongoing “reload” offers for existing customers, which vary from month to month. Nothing is guaranteed. In the UK, gambling winnings aren’t taxed, and that includes matched betting profits. If your circumstances are unusual, check with HMRC or an accountant. Matched betting doesn’t appear on your credit file, but mortgage lenders read your bank statements and may ask about frequent gambling transactions. Many people pause for a few months before applying. No, you can match offers yourself with a free calculator and an exchange. A paid service such as OddsMonkey or Outplayed mainly saves time: it tracks every offer, explains each one step by step and finds the best matching odds.Is matched betting risk free?
How much can you make from matched betting?
Do I have to pay tax on matched betting profits?
Will matched betting affect my credit score?
Do I need a paid service?
18+ only. Free bets and welcome offers are for new customers and T&Cs apply. Matched betting involves real money bets and mistakes can cost you. If gambling stops being fun, visit our responsible gambling page or call the National Gambling Helpline on 0808 8020 133. Free advice is also available from BeGambleAware.org.
