When a company decides to integrate Bitcoin into its accounting, various tools and specialized software simplify the collection and processing of data. Among the most well-known solutions are CoinTracker, Waltio, Cryptio, Koinly, TokenTax, and ZenLedger. These platforms focus primarily on four aspects:

They are often a wise complement for large organizations with multiple wallets and assets across various platforms or exchanges.

However, a simple .csv file containing the transaction history is often sufficient for most small businesses. The goal is to document, for each payment, the date, amount, equivalent value in euros/dollars, and the relevant Bitcoin addresses. The vast majority of Bitcoin payment solutions (BTCPay Server, Swiss Bitcoin Pay, etc.) or exchange platforms (Bitfinex, Kraken, Coinbase, etc.) already offer a mechanism to export transaction histories. By providing this file to an accountant, it becomes possible to streamline data entry and clearly distinguish incoming and outgoing flows related to Bitcoin.

For those who self-custody their Bitcoin, managing UTXOs (Unspent Transaction Outputs) is an important step. Proper UTXO labelling helps trace the origin of each BTC fragment, differentiate transactions related to professional activity from those for personal expenses, and facilitate traceability for legal or tax purposes. Most good Bitcoin wallet software allows you to import your wallet using your backup file (or your xpub, depending on your setup) and tag UTXOs based on their origin or destination. To assist you, here is a complete tutorial dedicated to this practice:

Ultimately, whether you are a small merchant or a more established business, it is possible to settle an invoice in Bitcoin. The key is to document the transaction properly. If you pay from a self-custody wallet, it is ideal to generate a transaction note including the invoice number and payment purpose in your labels. If you prefer to settle the invoice via an exchange, you will also have the option to export a receipt or transaction history to include in your accounting records. This transparency will simplify the tracking and reporting of all your BTC operations.