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The wallet is Zinc’s default way to pay. You pre-fund a balance, and each order draws its cost plus a flat $1 API fee from that balance. Fund once, then place orders without attaching any payment details per request.

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Funding Your Wallet

Add funds from the Wallet button in the top navigation. Enter the amount you want to add; that full amount is credited to your wallet, and the processing fee for your chosen method is added on top of what you’re charged.
MethodProcessing fee
Credit or debit card2.9% + $0.30
ACH bank transfer0.8%, capped at $5.00
Wire transfer$15.00 per wire
Self-serve top-ups run from $15.00 up to $100,000.00; for larger amounts, contact us to arrange a wire. Test and production wallets are kept separate.

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Placing Orders

Place orders as normal, with no payment object. Each order draws order_cost + $1 from your balance. An order placed without enough balance to cover it is rejected with insufficient_funds (HTTP 402), so keep a buffer.

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Refunds

Zinc credits your wallet automatically when an order doesn’t go through:
  • Cancelled by the retailer: the full charge is refunded to your wallet.
  • Return credited: when a return is resolved by crediting rather than a merchant RMA, the credit lands in your wallet.

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Other Ways to Pay

If you’d rather not carry a balance, charge your own end-customer instead with Stripe Connect, or pay per request with no Zinc account using MPP.