Your first offer.
From free bet to cash.

01 / Start with the payoff

The offer supplies the value. Matching turns it into cash.

A bookmaker might offer a free bet when you sign up and place an eligible cash bet. Matched betting uses a second, opposing bet to balance each stage. You're working with the promotion, rather than relying on a sporting prediction.

There are two separate jobs. First, qualify for the free bet at a small, calculated cost. Then convert the free bet into cash. Keep both stages in your profit calculation.

Our example: bet £10, receive one £20 free bet

We'll model an eligible £10 cash bet followed by a £20 stake-not-returned free bet. Assume the free bet arrives after the qualifying event settles, both sides use identical settlement rules and the proceeds can be withdrawn. These are example conditions, not an advertised bookmaker deal.

The qualifying stage costs 30p. The free-bet stage produces £15.86 after commission. The overall result is £15.56 extra cash. The two stages can involve different events; each individual back/lay pair must cover the same selection and market.

02 / Just enough betting knowledge

One selection. Two opposite positions.

A back bet says a selection will win. A lay bet says that same selection will not win. The bookmaker takes your back bet; a betting exchange lets you place the opposing lay bet.[4]

You do not back the other team. In a three-way football market, that would leave the draw uncovered. Laying Harbour FC covers both a draw and an opposition win.

Match the event, selection and settlement period exactly. A 90-minute result is not the same market as “to qualify”, which can include extra time or penalties. Harbour FC is a fictional team used only to explain the method.

Odds tell you the payout, not which side to cheer for

Use decimal odds. A £10 cash bet at 2.00 returns £20 if it wins: £10 of your own stake plus £10 winnings. A £20 stake-not-returned free bet at 6.00 pays £100: £20 × (6.00 − 1). The token itself is not returned.

That difference is why the calculator has separate Qualifying cash bet and Free bet: stake not returned modes. Choosing the right mode is more useful than memorising a formula.

03 / Set yourself up

Have the money ready on both sites.

You need an eligible bookmaker account, a betting-exchange account, the offer terms and a calculator. Set the accounts to decimal odds. In Great Britain, online gambling businesses must verify your age and identity before you can bet.[3]

Use accounts and permitted payment methods in your own name. For UK readers, choose appropriately licensed operators and check the age and identity requirements. If you're elsewhere, check local eligibility rather than assuming a UK offer applies.

Liability is a balance requirement, not an extra fee

The lay stake is the amount the other side is staking. Your liability is the amount the exchange can take if your lay bet loses. The exchange sets aside enough of your available balance to cover it.[4]

In our free-bet example, the lay stake is £16.18 but the liability is £84.14. Put £16.18 in the lay-stake field, not £84.14. If the lay bet loses, the bookmaker payout provides the offset.

You do not need to copy that budget. Use spare funds you can leave in the accounts until settlement. A smaller-liability match can be a better first offer, even if it produces less cash. You'll see a lower-balance alternative below.

04 / Pick an offer that fits

Read the deal before choosing the bet.

For your first attempt, look for a straightforward cash-bet-to-free-bet promotion. Fewer moving parts make it easier to follow the money. Read the bookmaker's current terms before signing up or depositing, especially if an offer needs a specific registration link or code.

• Eligibility: are you a new or eligible existing customer, in the right location, and within any account or household limits?
• Activation: is there a code, opt-in or permitted deposit method?
• Qualifying bet: what cash stake, minimum odds, sport, market and bet type are required? Are cash-out or void bets excluded?
• Reward: is it one token or several? Does it return the stake? Are there further wagering requirements or payout caps?
• Timing: when must you qualify, when is the reward credited and when does it expire? Check whether the event must settle by a deadline too.

Write those details down or save the terms. Our example assumes a single £20 token with no further wagering on its winnings. A casino bonus, accumulator promotion or stake-returned token needs a different calculation; don't force it into this walkthrough.

Find a matching market, not a winning tip

Choose an eligible event well before it starts. Find the same selection on the bookmaker and the exchange. Check the live back odds, live lay odds and enough available exchange money to match your calculated lay stake.

An oddsmatcher can help find candidates, but it isn't a prediction service. Recheck any suggested match on both sites. Compare the calculated qualifying cost and required balance, not just the numerical gap between two odds.

05 / Unlock the free bet

A 30p qualifying cost in our example.

Suppose our qualifying selection has back odds of 2.00 and lay odds of 2.04. We enter a £10 cash stake and an assumed 2% commission. The calculator gives a £9.90 lay stake and £10.30 liability.

If the lay wins, £9.90 less 20p modelled commission leaves £9.70. The 30p overall cost is the amount we spend to unlock the £20 token. We include it when counting the final profit.

Don't automatically use equal stakes. Differences in odds and commission mean the lay stake usually differs from the bookmaker stake. Your calculator should show the result for both outcomes before you place anything.

06 / Put the pair in place

Prepare both sides. Confirm what was accepted.

Have both sites open before placing the bookmaker bet. Check the exchange balance and available lay amount first, so you're ready to complete the pair promptly.

1. Calculate from the current odds. Check the event, market, selection, offer eligibility, commission and liability.
2. Place the qualifying cash back bet. Read the confirmation. Record the stake and odds actually accepted, which may differ from the earlier display.
3. Recheck and place the lay. If either price changed, recalculate using the accepted bookmaker odds and current exchange odds. Enter the calculated lay stake in the exchange's lay field, not its liability field.
4. Verify “fully matched”. Check the entire intended lay stake was matched and at which odds. A submitted order is not proof the two sides are covered.[1]
5. Save both bet references. Record the market, stakes, accepted prices, qualifying cost and expected settlement time.

07 / Convert the reward

This is the cash-producing stage.

Once the £20 token arrives, check its expiry and rules. Choose another eligible back/lay pair. The new event can be different from the qualifying event, but the two sides of this new pair must match each other.

For our example, the free-bet selection has back odds of 6.00 and lay odds of 6.20. Choose Free bet: stake not returned in the calculator, enter £20 and the example 2% commission. The result is a £16.18 lay stake and £84.14 liability.

1. Check the exchange balance and available lay money. We have enough to cover £84.14 after either qualifying outcome.
2. Select the £20 token in the bookmaker betslip. Confirm that the stake is coming from the free bet, not your cash balance.
3. Confirm the free-bet receipt. Recalculate if the accepted price or current lay price changed, then place and verify the opposing lay just as before.

If the selection wins, the token pays £100 and the exchange takes £84.14. If it does not win, the token is used without a payout and the lay wins £16.18 less 32p modelled commission. Both routes leave £15.86 before qualifying costs.

Choose the cash return that fits your available balance

Higher back odds can retain more of a stake-not-returned token's value when the lay price remains competitive, but they can require more exchange cash. Higher odds alone do not guarantee a better match.

For comparison, a £20 token at back odds 2.50, lay odds 2.60 and 2% commission needs a £11.63 lay stake and £18.61 liability. It produces £11.39–£11.40 before qualifying costs. Less cash retained, but much less tied up. A workable smaller offer beats an oversized one you cannot fully match.

08 / Count what you kept

£15.86 produced. 30p spent. £15.56 kept.

Once both stages have settled and the offer conditions are complete, add the cash across both accounts. It doesn't matter which one holds more.

In our £110 starting-balance example, the two accounts now total £125.56, assuming no other bets, fees, deposits or withdrawals. Your original £110 is still part of that total. The extra £15.56 is the profit.

Make your own simple profit record

For each offer, record the qualifying cost, free-bet proceeds after commission, any additional fees and the final net amount. Mark a profit as settled only after both sides have settled; an open bet is not cash earned yet.

To reconcile a period with multiple deposits or withdrawals, use: closing combined cash + withdrawals − deposits − opening combined cash. Do this with all relevant bets settled, and leave bonus-token balances out of the cash total.

Withdraw available cash according to the operator's terms and verification requirements, or keep an amount you choose available for the next eligible offer. Do not withdraw funds still needed for liability or before checking whether withdrawal affects an unfinished promotion.

Then repeat the process, not the guesswork

Finish and reconcile your first offer before opening several more. Each completed offer gives you a clearer routine: check the terms, compare the numbers, match both sides, record the cash.

Later, eligible welcome and existing-customer offers can provide more opportunities. Availability and account eligibility vary. Judge each one on its own net return and balance requirement, rather than chasing a daily earnings target.

Keep this beside your betslips

The before-you-bet checklist

Tick each check as you work. These boxes are a reading aid, not a saved record of your bets.

The last three checks happen after placing the bets. Keep the page open until both receipts are confirmed.

No betting dictionary needed

The terms you'll actually use

Bookmaker

The site offering the promotion and taking your back bet.

Exchange

A marketplace where customers' opposing bets can be matched.

Back / lay

For a selection to win / against that same selection winning.

Stake / liability

The amount staked / the amount you could pay out if a lay loses.

Qualifying cost

The net cost of the matched cash bet used to earn a reward.

Stake not returned (SNR)

A free-bet type that pays winnings but does not return the token value.

Fully matched

The whole intended exchange stake has been accepted by opposing bets.

Liquidity

The amount available to match at a stated exchange price.

Settlement

The operator's processing of the result, payout and released balance.

Net profit

What you kept after qualifying costs, commission and other applicable fees.