Promotional Betting: A Beginner's Guide

Understand how bookmaker promotions work, how matched betting works, and how to find and calculate potential matches.

13 min read

Bookmakers regularly offer promotions to attract new customers and reward existing ones. These can include free bets, bet credits, enhanced odds and other incentives.

Some promotions can be used alongside betting exchanges to reduce the financial exposure involved in a qualifying bet or convert a promotional reward into withdrawable cash. This approach is commonly known as matched betting.

It is important to understand that this is not completely risk-free, and it is not suitable for everyone. You'll need to understand the offer conditions, have access to the required funds and follow the instructions carefully.

This guide explains the basics, introduces the terminology and shows you how to find potential matches using bookmaker and exchange odds.

What is promotional betting?

Promotional betting is the use of incentives offered by bookmakers, such as free bets, bet credits and sign-up promotions.

Each promotion has its own conditions. You might need to place an initial qualifying bet, meet minimum odds requirements or complete other steps before receiving a reward.

Some people use betting exchanges alongside these promotions to manage the potential outcomes of a bet. This is where matched betting comes in.

The aim is to use the bookmaker's promotional offer while placing an opposing bet on a suitable betting exchange. When the bets are correctly matched, the potential outcome of the original sporting event can be largely offset.

The value comes from the promotion, rather than relying on predicting the result of a sporting event.

How does matched betting work?

To understand the process, you need to know the difference between a bookmaker and a betting exchange.

A bookmaker offers odds on an event. When you place a standard bet, you're backing a particular outcome to happen.

A betting exchange allows customers to bet against one another. As well as backing an outcome, you can lay it, which means betting against that outcome happening.

For example, you could back a football team to win with a bookmaker and lay that same team to win on an exchange.

The two bets are designed to offset one another:

  • If the team wins, the bookmaker bet wins while the exchange lay bet loses.
  • If the team does not win, the bookmaker bet loses while the exchange lay bet wins.

When the bets are matched correctly, this can make the overall result much more predictable than placing the bookmaker bet on its own.

However, the amounts and odds need to be calculated properly. Exchange commission, price movements and unmatched bets can all affect the final result.

A simple example

Imagine a bookmaker offers a qualifying bet and you decide to place £10 on Team A to win at decimal odds of 2.00.

You then place an opposing lay bet on Team A at odds of 2.00 on a betting exchange, using a £10 lay stake.

In this simplified example:

Bet outcomeBookmakerBetting exchange
Team A wins+£10-£10
Team A does not win-£10+£10

Before exchange commission, the two bets offset each other.

There is an important distinction when using a betting exchange: your lay stake and your lay liability are not the same thing.

Your lay stake is the amount you stand to win if the selection loses. Your lay liability is the amount you could lose if the selection wins.

Liability is calculated as:

Lay stake × (Lay odds − 1)

For example, a £10 lay stake at odds of 2.00 creates £10 of liability. At odds of 3.00, the same £10 lay stake creates £20 of liability.

This is why checking the lay liability before placing a bet is important. It determines how much money you need available in your exchange account to cover the potential loss.

In a real situation, the odds available on each platform are unlikely to be identical. Exchange commission may also apply, so the result can involve a small qualifying loss rather than a perfect balance.

The example above only demonstrates the qualifying bet. The promotional reward is a separate part of the offer.

How to find bookmaker and exchange odds that match

You don't necessarily need an automated OddsMatcher to find potential matches. You can search manually by starting with a betting exchange and then checking the corresponding bookmaker prices.

Here's a practical way to approach it.

Step 1: Start with a betting exchange

Open a betting exchange and browse its upcoming sporting events. Football match odds are one possible starting point.

Look at the back and lay prices available for different selections.

Markets where the back and lay prices are relatively close together can be useful places to start. A smaller gap between the prices generally means a tighter market, although this alone doesn't tell you whether you've found a suitable bookmaker match.

Step 2: Choose a selection and check the available money

Find an event and selection you're interested in, then look at the available lay price.

Check how much money is available at that price. This is important because a price might look suitable but have insufficient liquidity to match the amount you need.

Step 3: Find the same event with a bookmaker

Open your bookmaker account and find the same fixture, event and selection.

For example, if you're looking at Team A to win on the exchange, check the bookmaker's price for Team A to win too.

Make sure the markets are genuinely equivalent. A standard match-winner market is not the same as draw no bet, for example.

Step 4: Compare the bookmaker and exchange prices

The two prices that matter for the standard qualifying-bet calculator are:

  • The bookmaker's back odds.
  • The betting exchange's lay odds.

These do not have to be identical. The calculator uses the prices you've found to work out the appropriate stakes and potential outcomes.

For example, imagine you find the following prices:

PlatformPrice
Exchange back odds2.02
Exchange lay odds2.04
Bookmaker back odds2.10

The exchange prices are relatively close together, which makes this a useful example of a market to investigate.

You would then compare the bookmaker's 2.10 back price with the exchange's 2.04 lay price.

The exchange back price is useful when scanning the market, but it is the bookmaker back price and exchange lay price that you enter into the standard qualifying-bet calculator.

Step 5: Calculate the stakes

Once you've found the prices, enter the bookmaker stake, bookmaker odds, exchange lay odds and applicable commission into the appropriate calculator.

This will help you work out the lay stake, exchange liability and potential outcome.

For accumulator bets and Bet Builders, use the dedicated Monzenta calculators rather than treating the entire bet as a standard single-event calculation.

Step 6: Double-check before placing anything

Odds and available amounts can change. Recheck the prices before placing your bets.

Make sure the selections and settlement conditions are equivalent, that you have sufficient exchange funds and that you understand how much you're potentially liable to lose.

If an exchange bet is only partially matched or remains unmatched, you can still have an exposed position.

Remember, finding close prices is only the starting point. It doesn't automatically mean a promotion is suitable or that a particular bet will produce a profit.

Try the Monzenta Matched Betting Calculator

Once you've found the bookmaker and exchange prices, the next step is working out the correct stakes.

The Monzenta Matched Betting Calculator allows you to enter your own odds and calculate the relevant stakes, liability and potential outcomes.

The standard calculator supports three calculation types:

  • Qualifying bets: Calculate the opposing lay stake for an ordinary cash bet.
  • Stake Not Returned (SNR) free bets: Calculate how to use a free bet where the original stake isn't returned with the winnings.
  • Stake Returned (SR) free bets: Calculate how to use a free bet where the original stake is returned if the bet wins.

Monzenta also has two dedicated calculators for more complex promotional bets:

  • Accumulator Calculator: Designed for calculating accumulator bets containing multiple selections, with the relevant lay calculations and liability.
  • Bet Builder Calculator: Designed for calculating Bet Builder bets using the combined bookmaker bet and the relevant opposing exchange price.

These calculators use different calculation methods because accumulators and Bet Builders don't work in exactly the same way as standard single-event bets.

You can use the calculators independently without creating a Monzenta plan.

The calculators work with the prices and information you enter. They don't search bookmaker or exchange prices, confirm that two markets are equivalent or check whether you qualify for a promotion. Always check those things yourself before proceeding.

What do you need to get started?

Before considering an offer, there are a few things you'll need to understand.

1. A bookmaker account

You'll need an eligible account with the bookmaker offering the promotion. Check whether the offer is available to you, whether you're a new or existing customer, and whether any exclusions apply.

2. A betting exchange account

Traditional matched betting uses an exchange to place the opposing lay bet. You'll need to understand how the exchange works, including its odds, available markets and commission.

3. Money available to cover the bets

You may need funds in both accounts. On the exchange, a lay bet requires enough balance to cover its liability: the amount you could lose if the selection wins.

Never use money needed for bills, essential spending or other commitments. Don't borrow money to take part.

4. An understanding of the offer terms

Every promotion is different. Check the qualifying stake, minimum odds, expiry date, eligible markets, reward type and any restrictions before starting.

5. A calculator

The bookmaker stake and exchange lay stake need to be calculated using the actual odds and applicable commission. Guessing or using the same stakes without checking can leave you exposed.

The basic process

Although individual offers vary, a typical promotional betting offer follows this pattern.

Step 1: Check the offer

Read the bookmaker's terms and confirm that you're eligible. Make sure you understand exactly what you need to do to qualify.

Step 2: Understand the qualifying bet

Some promotions require an ordinary cash bet before a reward is released. This is often called the qualifying bet.

The stake, minimum odds and eligible markets will depend on the offer.

Step 3: Find suitable odds

Use a betting exchange to identify potential markets, then check that the bookmaker offers the same event and selection. Compare the bookmaker back price with the exchange lay price.

Step 4: Calculate the opposing bet

Use the bookmaker odds, exchange odds and commission to work out the appropriate lay stake and liability.

For accumulator bets and Bet Builders, make sure you select the dedicated calculator designed for that bet type.

Don't place the bets until you understand the figures.

Step 5: Check both bets

Make sure you're using the same event, selection and equivalent market. Check the amounts and odds carefully. An opposing bet on a different market may not provide the protection you expect.

Step 6: Wait for settlement

Once the event has finished, check that both bets have settled correctly. If the offer conditions have been met, the bookmaker should apply the promotional reward according to its terms.

Step 7: Understand the reward

A free bet or bet credit is not necessarily the same as cash in your account. Different reward types have different rules, and the original stake may not be returned when a free bet wins.

The way you use the reward can affect how much value you ultimately receive.

What about accumulators and Bet Builders?

Not every promotional bet can be matched using a standard opposing bet.

An accumulator, often called an acca, combines multiple selections, usually across different events. A Bet Builder combines several selections within the same event, such as a player to score and a team to win.

These bets can be more complicated because a betting exchange does not necessarily offer an identical market covering all the same selections and conditions.

A suitable equivalent exchange market may exist for some offers, but it should never be assumed.

Monzenta provides dedicated calculators for both accumulator bets and Bet Builders. These help you calculate the relevant stakes and potential results for the type of bet you're considering.

However, having a calculator doesn't automatically make a bookmaker bet matchable on an exchange. You still need to find an exchange market that genuinely covers the same selections and settlement conditions.

If there is no suitable equivalent exchange market, you cannot rely on a standard lay bet to offset the bookmaker bet.

Always check the exact market before proceeding. If an offer cannot be matched reliably, don't treat its reward as guaranteed cash or assume the potential exposure has been removed.

What are SNR and SR free bets?

You'll often see two terms when researching promotional betting.

Stake Not Returned (SNR)

With a typical SNR free bet, the original free-bet stake is not included in the winnings. For example, a £10 free bet at decimal odds of 5.00 would generate £40 in winnings if successful, not £50.

Stake Returned (SR)

With an SR free bet, the original stake is also returned if the bet wins. This changes the calculation and can affect how the reward is used.

Always check the individual promotion's terms. The label alone should never replace reading the actual conditions.

We'll explain both reward types in more detail in their dedicated guides.

Common mistakes to avoid

Promotional betting involves several moving parts. A few common mistakes can make a significant difference to the result.

  • Ignoring the terms: Minimum odds, qualifying stakes, expiry dates and eligible markets can all affect whether an offer qualifies.
  • Using the wrong market: The bookmaker and exchange bets must cover equivalent outcomes. Similar-looking markets are not necessarily the same.
  • Confusing exchange prices: The exchange back price isn't the price you enter as the bookmaker back odds.
  • Forgetting commission: Exchange commission can reduce the amount you receive from a winning exchange market.
  • Ignoring liquidity: There may not be enough money available at the lay price to match your required stake.
  • Assuming a bet is matched: An unmatched or partially matched lay bet can leave you with more exposure than expected.
  • Confusing lay stake with liability: The exchange amount you could lose may be greater than the amount you stand to win.
  • Treating free bets as cash: Promotional rewards often have restrictions and may not be withdrawable directly.
  • Using money you cannot afford to lose: You should never put essential money at risk to complete an offer.

Take your time. A promotion is not worth rushing into if you don't understand how it works.

Is matched betting risk-free?

No.

Matched betting is designed to reduce exposure by placing opposing bets, but it cannot remove every risk.

Odds can change, exchange bets may not be fully matched, markets can be settled differently, and mistakes can leave you with an unexpected position. Commission and promotional restrictions can also affect the result.

Bookmakers and exchanges may ask for identity or further verification, and you should understand their account and withdrawal terms before depositing money.

Promotional offers can also change or expire, so don't assume an offer will remain available.

Most importantly, matched betting still involves gambling accounts and betting activity. It should never be treated as a guaranteed income source or a way to recover money you've lost.

Is promotional betting suitable for everyone?

No. It's important to consider your own circumstances before taking part.

If you're already struggling financially, trying to cover essential bills or feeling pressure to make money quickly, gambling-related activity may make things worse.

It may also be unsuitable if you have a history of gambling-related harm or find it difficult to keep betting separate from entertainment or personal finances.

The NHS advises people experiencing gambling-related harm not to view gambling as a way to make money. It should never be treated as a solution to financial difficulties.

You should feel comfortable walking away from an offer. There is no obligation to take part simply because a promotion is available.

In Great Britain, online gambling is restricted to adults aged 18 and over. Gambling operators must verify customers' age and identity before allowing them to gamble, including when using free bets or bonuses.

If gambling is affecting you or someone close to you, free support is available through GamCare. Its National Gambling Helpline is available 24 hours a day on 0808 8020 133.

You can also read the NHS guidance on getting help for gambling problems.

Where to learn more

Now that you understand the basics, these guides explore the individual parts of promotional betting in more detail:

Want to explore your options?

Monzenta helps you understand different ways to find extra money and see which opportunities may fit your circumstances. Explore the Monzenta Planner to start building a plan.

Monzenta provides information and tools to help you understand promotional offers. We don't operate bookmakers or betting exchanges, and we don't guarantee that an offer will result in a profit. Always check the provider's current terms before taking part.

Safer gambling

Betting offers are for people aged 18 or over. If gambling stops feeling under control, free confidential support is available from GamCare and BeGambleAware.