Arthur Labs

Multi-wallet tax reports

7 Crypto Tax Mistakes That'll Cost You Thousands

By Watson Lewis-Rodriguez • 5 min read

1. Forgetting Cost Basis

IRS assumes $0 = 100% gain

2. Ignoring Airdrops

Taxable at FMV, cost basis $0

3. Missing DeFi Swaps

ETH→SOL = 2 taxable events

4. Not Tracking Gas

Add to cost basis!

Disclaimer: Educational purposes only.