Account Funding - Issuer Fees
Release Details
Release Date: August 26th, 2026
Release Type
Informational – optional action from platforms
Summary
Some stablecoin issuers charge zerohash a fee on mint or burn activity. In some cases, zerohash must pass these fees on to the platform on a per-transaction basis. This is already the case for the Liquidity API, and this release extends the same treatment to the Account Funding flow.
This release covers how a platform that is charged an Issuer Fee can access that information via API. When a platform is configured to incur Issuer Fees for a given stablecoin, the fund quote, fund webhook, and fund transaction records include three fields: issuer_fee_amount, issuer_fee_rate, and issuer_fee_payor_type. The customer is credited the full deposit notional, the Issuer Fee is recorded per fund event, and the platform is invoiced monthly for the total Issuer Fees incurred. There is no change to deposit confirmation emails.
zerohash does not support a way for platforms to pass Issuer Fees directly on to their own customers through Account Funding. Platforms that wish to recoup these costs from their customers can do so using the Account Funding transaction fee feature.
Optional action: No integration changes are required to continue receiving deposits. Platforms incurring Issuer Fees can read these fields to reconcile against their monthly invoice.
Endpoints Impacted
When a platform is configured for issuer fees, the following endpoints will return issuer_fee_amount (where applicable), issuer_fee_rate, and issuer_fee_payor_type