Payments
Bitcoin and fiat payments, connected to your books.
Invoice in Bitcoin and Lightning, with US card and ACH available through payment partners on request. Keep payment activity in the same ledger.
Invoicing › New Invoice
Accept payment via
- LightningInstant · ~0 fees
- Bitcoin On-chainPeer-to-peer · No Flash fees
- ACH bank transferUS only
- Credit cardVisa · MC · Amex · US only
One invoice. Every payment method.
Create an invoice, choose which payment methods your client can use, and send. Your client clicks the payment link and chooses how to pay. They pay how they want. You receive funds exactly where they belong, fiat to your bank, Bitcoin to your wallet.
- Lightning, instant, near-zero fees, settled in seconds
- Bitcoin on-chain, peer-to-peer, no Flash fees
- ACH bank transfer, US only
- Credit card, Visa, Mastercard, Amex · US only
What makes Flash different
Keep the payment, customer and transaction value together in Flash. Your team can review payment activity alongside the rest of the books.
Fiat rails for Bitcoin businesses
US card and ACH acceptance is available through our payment partners, including for eligible mining and other harder-to-place businesses. Availability is subject to partner underwriting.
Payment Link
One link. Every payment method.
Send your customers a hosted payment link. They pick how to pay, Bitcoin, Lightning, card, or bank. You receive funds exactly where they belong, automatically tracked in your treasury.
Invoice
to Northfork MiningINV-2026-000030
| Description | Qty | Unit price | Amount |
|---|---|---|---|
| Hosting, August 2026 | 1 | 2,500.00 | 2,500.00 |
| Total | 2,500.00 USD |
Payment method
EXAMPLE-ADDRESS-NOT-FOR-PAYMENTSample invoice, not payable
Fiat acceptance, on request.
Merchant accounts are $50/month when fiat is enabled, plus partner processing fees. Already using Flash for mining? We will confirm how payments fit your account before activation.