When customers pay in crypto, supplier invoices still call for bank transfers. A corporate exchange or conversion partner turns those receipts into fiat the company can use to pay suppliers.
The invoice currency sets the conversion target. USDC sold into USD still leaves a euro-paying business with another FX transaction; a quote directly into EUR can incorporate that conversion before the supplier payment.
The route to the supplier
The receiving account determines how converted funds reach the supplier:
● Through the company’s bank account. Kraken requires the receiving account name to match the verified customer or company; the supplier payment follows from that account. With an OTC desk, the business can agree a price for the whole conversion and settle to an agreed account instead of placing separate exchange orders.
● Through a payment balance. Railor’s exchange partners convert crypto to fiat into the company’s Railor balance. Payments can then follow via SEPA, SWIFT, or local routes, with each exchange partner handling its own onboarding checks.
Before conversion, the crypto deposit must use the provider’s supported blockchain network and correct token version. Circle Mint’s standard instructions, for example, exclude bridged USDC.
How do you convert crypto to cash for an €8,000 invoice?
An €8,000 supplier invoice needs €8,000 of usable fiat after conversion and payment fees. The hypothetical quote in this example is €0.92 per USDC, with 0.6% deducted from the gross euro proceeds. Another €10 covers the bank payment. It comes out of the resulting fiat balance, and the model includes no further bank deductions.
The required USDC is the invoice plus the payment fee, divided by the euro rate after the conversion deduction. Of each euro generated by the conversion, 99.4 cents remain after the 0.6% fee:
(€8,000 + €10) ÷ (€0.92 × 0.994) = 8,759.076196 USDC.
The calculation works backward from the supplier’s net receipt rather than a wallet’s indicative euro valuation. Rounding the conversion quantity upwards to 8,759.08 USDC gives the following result:
| Funding stage | Amount |
| USDC converted | 8,759.08 USDC |
| Gross euro proceeds | €8,058.35 |
| Conversion fee | €48.35 |
| Payment fee | €10.00 |
| Supplier receives | €8,000.00 |
A sale producing €8,000 before fees would leave only €7,942 for the supplier after the same deductions. The shortfall is €58.
An additional network fee worth €4.60 is paid separately in the blockchain’s fee asset; on Ethereum, that is ETH. It increases the funding requirement outside this euro calculation, leaving the modeled supplier receipt unchanged.
Carry the conversion through to payment
An invoice due on Friday needs the banking leg to finish by then; with a next-working-day payout, converting on Friday afternoon leaves the supplier waiting until the following week, although the exchange itself has completed.
Once the fiat proceeds are available in the company account, the payment follows the supplier’s bank details in the invoice currency. In this example, €8,010 supports the €8,000 transfer and its €10 charge. Settlement evidence confirms the supplier’s credit; the exchange confirmation establishes only the conversion result.
For invoice SUP-1042, finance can attach the wallet transaction hash and exchange confirmation to its payment record, then add the bank transfer reference when paying the supplier. A wallet hash identifies the crypto movement. The conversion statement explains the fiat credited and exchange fees, allowing a later payment query to be traced back through the transaction records.
A single conversion may fund several supplier invoices. The same exchange reference can appear in each payment record, with the euro amount allocated to that invoice, so the conversion’s net euro proceeds reconcile to supplier payments plus the bank charges and any unspent account balance.
Terry Clark is the Publisher and Content Director of 365 Retail, with more than a decade of experience covering retail design, technology innovations, store openings and the wider retail industry. He also works closely with leading retailers, suppliers, agencies, events and industry awards across the UK.
