What Are Bookmaker Free Bets and Sign-Up Offers?
'Bet £10 get £30' offers are everywhere — but free bets come with strings. Here's how they really work and how to read the terms before you claim.
Free bets and sign-up offers — 'bet £10, get £30 in free bets' — are the betting industry's main tool for attracting new customers. They can offer genuine value, but they're wrapped in terms designed to protect the bookmaker. Understanding how they work stops you being caught out. This guide explains the mechanics and the small print, complementing how do bookmakers make money?.
How free bets work
A typical offer requires you to deposit and place a qualifying bet, after which you receive free bets. Crucially, most free bets return only the winnings, not the stake — so a winning £10 free bet at 2.0 pays £10 profit, not £20.
That 'stake not returned' detail makes free bets worth less than their face value.
Read the wagering terms
Offers come with conditions: minimum odds, expiry dates, qualifying-bet requirements and sometimes wagering ('rollover') requirements that force you to bet the value several times before withdrawing. Always read these before claiming.
The more restrictive the terms, the less the offer is really worth.
Free bets and matched betting
Free bets are the raw material of matched betting, where people extract the value of offers with little risk using an exchange. Done carefully and legally, it's one way to make offers pay.
But it takes precision, and bookmakers may restrict accounts that only claim offers.
Watch the incentive
Remember offers exist to get you betting and depositing, not to make you money. Tipsters who push sign-up offers via affiliate links profit when you join, a conflict covered in tipster affiliate conflicts of interest.
Only claim offers you'd use anyway, always within the limits in how to set deposit limits and time-outs.
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Last reviewed 17 August 2026 · Written and fact-checked against our review policy and scoring methodology.
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