Crypto invoices,
audit-ready.
Kryptos lets you create, send, and record crypto invoices with the FX rate locked at payment time, VAT calculated correctly, and every document stored for the accountant.
Works with Bitcoin, Ethereum, stablecoins, and 5,500+ other assets across major networks.
Everything a crypto invoice actually needs.
Invoicing in crypto is not just sending a wallet address. Kryptos handles the parts that come after: FX rates, tax, and the paper trail.
Invoice creation
Create a branded invoice in any currency, denominated in fiat or crypto. The client pays in crypto and the FX rate is locked at the moment of payment, not whenever you get around to recording it.
Automatic FX conversion
Every incoming payment is converted to your base currency at the prevailing market rate and timestamped. No manual lookups, no spreadsheet with yesterday's closing price.
VAT calculation
VAT computed on the fiat-equivalent value of the payment at the time of receipt. Correct for B2B reverse charge and B2C standard rate scenarios. Exported in a format your accountant can import directly.
Full audit trail
Every invoice, payment, FX conversion, and VAT calculation stored in an immutable ledger. Date, on-chain transaction hash, counterparty, amount in crypto, and fiat equivalent all in one record.
Recurring invoices
Schedule weekly, monthly, or custom recurring invoices for retainer clients. Payments auto-matched when they arrive on-chain so nothing sits in unreconciled limbo.
Accounting software sync
Push invoices and payments to QuickBooks, Xero, or your ERP via API. Your accountant works in the tools they already know, you work in crypto.
Your first 10 invoices are free. No credit card required.
Anyone billing or getting paid in crypto.
Freelancers
Bill clients in crypto without worrying about whether the FX rate and VAT treatment will hold up if you are ever asked to show your books. Kryptos handles the compliance automatically.
Agencies
Issue crypto invoices for retainers and project work with correct VAT and FX on every line item. Reconcile against your accounting software at month-end without any manual data entry.
E-commerce merchants
Accept crypto payments at checkout and have every transaction recorded with the correct fiat equivalent for your tax return. Integrate with your store via our API or payment plugin.
DAO contributors
Document your DAO compensation as proper invoices with fiat equivalents and tax treatment. Useful when your accountant asks what those token payments actually were.
Common questions about crypto invoicing.
Do I charge VAT on a crypto invoice?
Whether VAT applies depends on your country and the nature of the transaction, not on whether payment is in crypto. In the EU, crypto payments are subject to the same VAT rules as fiat payments. Kryptos calculates VAT on the fiat-equivalent value of the payment at the time of receipt, which is the correct treatment in most jurisdictions.
Which cryptocurrencies can I invoice in?
Bitcoin, Ethereum, USDC, USDT, and most major tokens across Ethereum, Polygon, Solana, and other networks. You can denominate the invoice in fiat (USD, EUR, GBP, etc.) and let the client pay the crypto equivalent, or denominate in the crypto itself.
How is the FX rate locked?
Kryptos records the market price of the asset at the time the on-chain transaction confirms, using a weighted average of major exchange feeds. This is the rate used for both accounting and VAT purposes. You can see the exact source and timestamp for every conversion in the audit trail.
What does the audit trail look like?
Each invoice record includes: the invoice number, client details, line items, the crypto amount received, the on-chain transaction hash, the FX rate at confirmation, the fiat-equivalent amount, the VAT calculated, and a link to the on-chain explorer. Exportable as PDF or CSV for your accountant.
Which accounting software does Kryptos sync with?
QuickBooks Online, Xero, and any ERP that accepts a standard invoice API or CSV import. We map each invoice to the correct chart of accounts entry so your accountant does not need to do manual double-entry.
Send your first crypto invoice in under five minutes.
Sign up, connect your wallet, and create a compliant crypto invoice with VAT and FX handled automatically.