Exchange Ladder Calculator

Placing an order at better odds may provide a more favourable price than the currently available offer.

If the market doesn't move to your selected price, your order will remain unmatched.

If the market does move to your selected price, your order may be matched at those better odds.

Some bettors choose to start with baseline odds and then plan additional orders at better prices anticipating market moves.

An Exchange betting ladder is a series of orders placed on the same market at different odds. Each order represents a pending bet that remains unmatched until the market moves and the corresponding price becomes available.

If some of your orders get matched, your combined position shifts as your total stakes and blended odds change.

This calculator helps determine the target odds and additional stakes for each order, with the aim of maintaining a consistent Stake/Kelly ratio as more orders are matched.

If several unmatched orders are placed at different prices, multiple orders may eventually be matched. Using the same stake for every order can cause your total stake to increase more than intended.

The Exchange Ladder calculates the additional stake required at each price so that your Stake/Kelly ratio remains consistent as more orders are matched. This accounts for changes in the blended odds and blended Kelly Criterion across the combined position.

The Kelly Criterion is a staking method that uses your estimated probability and the available odds to calculate how much of your staking base to risk when an edge exists.

In this tool, the Kelly Criterion is shown as a percentage. The proposed Baseline Stake converts that percentage into a monetary amount based on your Kelly staking settings. You can choose between a fixed multiplier or fixed bankroll, and select the Kelly fraction you want to use, such as full Kelly or half Kelly.

Kelly staking does not guarantee a profit or a winning bet. Because the calculation depends on your estimated probabilities and Combination Factors, the resulting stake is only as reliable as those estimates. Even with well-founded estimates, individual bets can still lose and results can vary significantly.

Betfair Exchange uses fixed odds increments, known as odds ticks, rather than allowing every possible decimal price.

For example, 2.00 is followed by 2.02, so there is no 2.01 price available.

The calculator uses Betfair's odds increments when calculating the target odds for additional ladder orders.

There is no single correct number of additional orders. A shorter ladder keeps your orders closer to the starting odds, while a longer ladder allows you to plan orders across a wider range of prices.

Choose a number of rows based on how far you are prepared to let the market move and how many additional orders you want to consider.

Orders may remain unmatched or only be partially matched, and available prices and liquidity can change.

The calculator is designed around the Betfair Exchange odds ladder and its permitted price increments.

The staking calculations may also be useful when planning orders on other Exchanges, but their available odds increments, commission rates and trading rules may differ.

If you use this calculator for another Exchange, enter its commission rate in Settings and check that the calculated target odds are available on the Exchange you intend to use.

Enter the commission rate charged by the Exchange you use for the relevant market. The default commission in this tool is 2%, but your actual rate may differ depending on your account and Exchange.

You can change the Exchange Commission in Settings to reflect the rate that applies to you.