Summary

  • A refund or chargeback first draws on the connected account where the charge occurred. If a connected account for which the platform owns loss liability cannot cover it, Stripe creates a reserve_transaction on the platform. Insufficient platform available balance can go negative and lead to a debit of the platform's linked bank account.
  • When the seller's negative balance shrinks, the Connect Reserve can release funds. If it persists for 180 days, Stripe's connect_collection_transfer moves reserved platform funds to the connected account and zeroes its negative balance.

The reserve is a route, not a label

A marketplace can look busy while one seller's refunds are eating cash. The customer who paid that seller needs a refund; the connected account should fund it. Stripe's Connect guide describes the next step for accounts whose losses belong to the platform. If the connected account's Stripe balance or linked bank account cannot support a refund or chargeback, Stripe draws on the platform. The reserve does not wait for the platform to call the loss its own.

The entry has a name: reserve_transaction. Stripe creates it when a loss-liable connected account turns negative. Platform available balance finances the reserve where it can. If that balance is too small, the platform's available balance is pulled below zero and Stripe initiates a debit of the platform's linked bank account to cover the shortfall. This is a conditional path, not a claim that every seller refund touches a bank. The first question is who owns the connected account's negative-balance risk.

Stripe's Accounts v2 configuration names that choice defaults.responsibilities.losses_collector. application assigns the connected account's negative balances to the platform; stripe assigns them to Stripe, while the platform still owns any negative balance on its own account. The two cases should never be thrown into one gross “Stripe Connect exposure” number. A marketplace that accepts seller loss liability has made a financing decision along with a product decision.

Reserve is also a clock. Stripe says the platform's Connect Reserve should roughly match the sum of negative balances on loss-liable connected accounts, allowing for data delays. If a seller processes new payments and its deficit narrows, reserve adjustments release money to the platform's available balance. If that deficit survives 180 days, a connect_collection_transfer takes funds from the reserve, credits the connected account and zeroes its negative balance. The money was already set aside; the aging event applies it. The platform can fund the connected account earlier to clear the deficit, which releases the corresponding reserve. Either way, the platform has to know which seller, which negative balance and how long it has been there.

There is no named marketplace loss or bank debit in the public guidance. A real balance-sheet claim requires the account's loss-liability setting, the refund or dispute, reserve entries and any linked-bank debit. The published mechanics already settle the business question: seller onboarding can include a promise to carry a stranger's negative balance all the way to the platform's bank. That promise deserves its own price and liquidity limit.

Sources