Matched betting · Calculator

Matched betting back and lay calculator

Use this matched betting calculator to work out your lay stake, liability, qualifying loss and profit. Choose between Normal, Free Bet (SNR) and Risk-Free modes. The maths is designed to stay consistent with companion app tracking and helps you avoid mistakes when placing back and lay bets.

Ideal for welcome offers, free bets, reloads, 2UP, and price boosts. Enter your back odds, lay odds and commission to see instant results.

Mode

Bet type

Back bet

Back stake (£)

Back odds

Back commission (%)

Lay bet

Lay odds

Lay commission (%)

Show part lays

Enter a back stake, back odds and lay odds to see results.

What does a matched betting calculator do?

A matched betting calculator works out the exact lay stake needed to balance your bookmaker back bet at the exchange. It removes the maths and gives you the numbers you need to lock in small qualifying losses or guaranteed profit on free bets.

Calculates lay stake instantly
Shows your liability before you place a bet
Displays qualifying loss or profit
Supports free bets and risk-free offers
Handles underlay, overlay and custom stakes

Example: how to calculate a lay stake

Here is a simple example using the calculator. Say you place:

£10 back bet at odds of 2.00
Lay odds at the exchange of 2.04
Exchange commission 0 percent

The calculator gives a lay stake of £9.80 and shows a qualifying loss of around £0.20.

This is normal and expected during welcome offers. You lose a few pence to unlock a free bet worth much more.

Calculator FAQs

What is a lay stake?

The lay stake is the amount you place at the betting exchange to bet against your selection. The calculator works it out automatically.

What is liability?

Liability is the amount the exchange holds in case your lay bet loses. This is not your stake. The calculator shows liability for every bet.

What is a qualifying loss?

This is the small cost of placing your back and lay bets to unlock a free bet or promotion. A normal qualifying loss is 10p to 40p.

Does this calculator work for free bets?

Yes. Use the Free Bet (SNR) mode to calculate profit from free bets.

Does this work for 2UP, boosts and reloads?

Yes. The calculator supports standard and advanced modes used for 2UP, price boosts and hedging reload offers.

More matched betting guides

If you are learning matched betting, these guides will help you understand the process, reduce mistakes and get more value from your free bets and reloads.

Back Yourself Betting calculators are built for the same staking logic you may later record in companion apps such as PocketProfit.