How do I track my Bitcoin portfolio and profits?
Quick Answer
Track two numbers: total BTC held and average cost basis. A simple spreadsheet logging each buy (date, amount, price, fees) beats most apps — and doubles as the tax record you'll eventually need anyway.
TL;DR
Record every buy when it happens: date, BTC amount, fiat spent, fees. Cost basis and P&L fall out automatically — and tax season becomes painless.
Key Takeaways
- 1Two numbers matter: total BTC and average cost per BTC
- 2Log at purchase time — reconstructing years later is the painful version
- 3Portfolio apps are convenient but mind privacy: read-only data, no keys, no exact-balance broadcasting
- 4Your tracking sheet IS your tax record — most jurisdictions need cost basis at sale
Full Explanation
The minimal system fits in four spreadsheet columns: date, BTC bought, fiat spent (fees included), and running totals. From that, average cost = total spent ÷ total BTC, and unrealized P&L = (current price − average cost) × holdings. Five minutes per purchase, and you'll never wonder where you stand. The keystone habit is logging at buy time — exchanges purge or paginate old history, and reconstructing three years of DCA at tax season is the punishment version of this task.
Apps and exchange portfolio tabs add convenience: live pricing, charts, multi-asset views. Two cautions. Privacy: a portfolio app knows your entire position — prefer tools that work with manually entered or read-only data, never give anything your keys, and remember our guidance on not broadcasting holdings. Accuracy: if you self-custody (you should eventually), exchange tabs lose sight of withdrawn coins, so your own record stays the source of truth.
The overlooked payoff is taxes. Most jurisdictions tax Bitcoin on disposal, calculated against cost basis — exactly what your sheet contains. Selling without records means reconstructing basis under deadline pressure or overpaying by default. One mindset note: for DCA holders, checking P&L daily mostly generates emotion, not information. Track diligently, glance occasionally; the spreadsheet is for taxes and discipline, not for staring at.