Once you hold crypto across more than one wallet or exchange, keeping track of what you actually own becomes surprisingly difficult. A proper portfolio tracking system fixes that, and it does not need to compromise your security to work well.
Why Portfolio Tracking Matters
Without a clear view of your total holdings, it is easy to lose track of your actual risk exposure, your average cost basis, and your tax position. This becomes especially important around UK tax season, since HMRC’s own record-keeping guidance and our guide on crypto-to-crypto swap tax explain how every swap can be a separate taxable event, which is nearly impossible to reconstruct accurately without ongoing records.
The Two Main Approaches to Tracking
Manual Tracking With a Spreadsheet
A spreadsheet gives you complete control and no third-party access to your data. You manually record each purchase, sale and swap, including the date, amount, and GBP value at the time. This works well for investors with a small number of holdings and infrequent trades, but it becomes time-consuming once transaction volume grows.
Dedicated Portfolio Tracking Apps
Portfolio tracking apps connect to your wallets and exchange accounts, either through public wallet addresses or API keys, and automatically calculate your total holdings, performance and, in some cases, tax reporting. This saves considerable time but introduces a new consideration: how much access you are giving a third-party app to your financial data.
Read-Only Access vs Full API Access
Most reputable portfolio trackers offer a read-only connection option, either through a public wallet address or a read-only API key, which lets the app see your balances without any ability to move funds. Always choose read-only access where it is available, and avoid entering any API key with withdrawal or trading permissions into a tracking app, since that is far more access than tracking requires.
What to Look for in a Portfolio Tracker
- Read-only connections as standard, not an optional extra buried in settings.
- Support for multiple wallets and exchanges in one consolidated view, rather than checking each separately.
- Clear cost basis tracking, so you can see unrealised gains and losses at a glance.
- Export functionality for your own records, which matters considerably for UK tax reporting.
- A track record and transparent company behind it, following the same vetting habits covered in our exchange legitimacy checklist.
Building a Simple Manual System
If you would rather not rely on a third-party app, a basic spreadsheet with columns for date, asset, amount, GBP value at the time, and transaction type covers most needs. Update it after every transaction rather than trying to reconstruct months of activity later, since exchange records and wallet histories are not always easy to piece back together accurately after the fact.
Security Considerations
Never connect a portfolio tracker using an API key with trading or withdrawal permissions. Where a tracker asks you to import wallet data, prefer entering a public wallet address over connecting a wallet directly, since a public address reveals only your balance and transaction history, not any control over your funds. Our crypto wallets guide covers the difference between these access levels in more depth.
Frequently Asked Questions
Are free portfolio trackers safe to use?
Many are safe when you use read-only access and avoid granting trading permissions. Always check what level of access the app is actually requesting before connecting anything.
Can a portfolio tracker see my private keys?
A properly configured tracker using a public wallet address or read-only API key never needs, and should never request, your private keys or seed phrase.
Do I still need to track my portfolio manually if I use an app?
Keeping your own backup record, even a simple spreadsheet, is good practice in case an app shuts down or loses your historical data, particularly for tax purposes.
This article is for general information only and is not financial or tax advice. Always verify a third-party app’s permissions and reputation before connecting your accounts.
