Wix Capital is a merchant cash advance product: a merchant receives a lump sum upfront in exchange for a share of their future sales. A remittance invoice is the daily record of how much of a merchant's sales goes towards repaying that advance.
With the Remittance Invoices API, you can:
A cash advance agreement sets a remittance rate: the percentage of each day's sales that goes towards repaying the advance. The rate is fixed for the life of the agreement and is stored on the agreement itself.
A remittance invoice is calculated at the beginning of each day, covering the previous day's sales in the agreement's timezone. A day without sales produces no invoice, so gaps in the sequence are expected.
An invoice records an amount that's due to be collected, not money that has already moved. When the funds are collected, the invoice is linked to a financial operation and financialOperationId is populated. An invoice with no financialOperationId has been calculated but not yet collected.
The last field marks the final invoice issued for an agreement. It doesn't indicate that the remittance has been collected.
Every remittance invoice splits its amount into 2 portions that always add up to it:
cashAdvanceAmountPortion: the part applied to the principal that was advanced.cashAdvanceFeePortion: the part applied to the agreement's fee.None of these values is negative, and a portion can be zero once the principal or the fee it applies to has been fully repaid.
It's important to note the following points before starting to code:
amount to salesAmount. The rate is fixed on the cash advance agreement, and the final invoice for an agreement can be capped by the amount still outstanding.Last updated: 22 September 2026