What is float in payments?

Definition

Float is money that has left the payer but has not yet reached the payee, sitting in transit inside the payment system.

In domestic payments float is measured in hours. In cross-border payments it is measured in days, because each intermediary in the correspondent banking chain adds its own processing time and cut-off windows. Whoever holds the money in transit earns the interest on it, and historically that has been the banks.

For a payment company, float scales with volume: a corridor on T+2 settlement permanently holds about two days of payouts in transit. That is working capital producing nothing. Stablecoin settlement shrinks the transit window to minutes, so the same volume runs with close to zero float. It is one of the two capital costs, alongside prefunding, that settlement speed decides.

Related terms

T+2 settlementT+2 settlement means a trade finalizes two business days after the day it is executed: T is the trade date, and the number counts the business days until money actually moves.PrefundingPrefunding is capital parked in a destination market before payouts happen there, so local payments can go out without waiting for cross-border settlement to catch up.Trapped capitalTrapped capital is money a business must hold idle inside its payment operations, in prefunded accounts, in-transit balances, and safety buffers, where it cannot be used for anything else.

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