- Export transactions, conversion rates, fees and rewards, not just a list of purchases.
- A short monthly routine is far easier than reconstructing a full year at once.
- Retention periods and tax treatment differ by country; check with your tax authority or a qualified adviser.
Every time you pay with crypto, there is a conversion behind the scenes. In many countries, that conversion can matter for tax. Even where it does not, clean records help you track spending, spot errors and resolve disputes. This lesson covers what to keep and how to make it a habit.
What to export
A simple list of purchases is not enough. Aim to capture the full picture of each transaction:
- Transactions. Date, time, merchant, amount and currency of every card payment, refund and ATM withdrawal.
- Conversion details. Which asset was sold, how much, and the exchange rate applied at the time.
- Fees. Top-up, conversion, FX, ATM and any monthly or card fees, listed separately.
- Rewards. Cashback received, the token it was paid in and its value on the day.
- Top-ups and transfers. Deposits into the card account, including network and source details.
- Acquisition records. When and at what price you originally bought the crypto you spent, often from the exchange where you bought it.
A simple monthly routine
Ten minutes a month beats a stressful weekend at the end of the year.
- Download the monthly statement and the full transaction export, ideally as a spreadsheet file as well as a PDF.
- Export matching records from any exchange or wallet that funded the card.
- Save them in a dated folder, such as one per year with a file per month.
- Scan for unknown transactions or unexpected fees and raise them with support promptly.
- Note anything unusual, such as refunds, chargebacks or transfers between your own accounts, so they are not mistaken for spending.
Kinds of tools that help
We do not endorse specific products here, but the tools people use generally fall into a few categories:
- Spreadsheets. Flexible and free, though they need manual upkeep.
- Crypto tax and portfolio software. Imports exchange and wallet data, matches acquisitions to disposals and produces reports. Check which countries’ rules it supports.
- Personal finance apps. Useful for budgeting, but often weak on crypto conversion detail.
- Encrypted cloud or local backups. Keep at least two copies of your exports in different places.
Whatever you use, keep the original exports. Software can mis-categorise transactions, and raw files let you check.
How long to keep records
Required retention periods vary by country and can run for several years after the tax year ends. Some authorities expect longer if a return is queried. A cautious approach is to keep records for as long as your local rules require and to store acquisition records for any crypto you still hold, however long ago you bought it.
Account closures are a real risk. If a provider exits your region or you close the account, export everything first, because access to history may end with the account.
Next steps
Set a recurring reminder for the first few days of each month and run the routine once now to build your folder structure. For a general overview of how crypto card spending may be treated, read our guide to crypto card taxes, then confirm the details with a qualified adviser.
Frequently asked questions
Why do I need conversion rates?
In many countries, spending crypto can count as disposing of it. Working out any gain or loss usually needs the value at the time you acquired it and at the time you spent it.
Is the provider’s app history enough?
Not on its own. Providers can change export formats, limit how far back history goes or close accounts. Keep your own copies.
Do cashback rewards need recording?
It is wise to record them. How rewards are treated varies by country, and you may need their value when received and when later sold or spent.