The harsh reality is that Bitcoin.Tax was built in 2013 when the most complex crypto transaction was buying Bitcoin on Mt. Gox with their broken PHP trading engine and hopefully not losing it when they got "hacked". Fast forward to 2025, and we're dealing with yield farming, liquidity pools, wrapped tokens, and governance airdrops that make the platform's basic trade-tracking look prehistoric.
The DeFi transaction types that will fuck you over
Bitcoin.Tax handles basic buy/sell/trade transactions fine. Where it completely shits the bed is with modern DeFi activities:
Yield farming rewards show up as random token deposits with no context. The platform doesn't understand that your 0.003 COMP tokens are staking rewards, not mysterious airdrops. Uniswap V3 concentrated liquidity? Good luck explaining that to Bitcoin.Tax. You'll manually categorize hundreds of micro-transactions.
Liquidity pool deposits and withdrawals get treated as regular trades, which is technically correct but useless for tracking impermanent loss. When you deposit ETH and USDC into Uniswap, Bitcoin.Tax sees two separate trades happening simultaneously and has no idea they're related.
Wrapped token transactions completely confuse the system. Converting ETH to WETH shows up as a sale of ETH and a purchase of a completely different asset, even though they're economically identical. The IRS guidance on wrapped tokens is still unclear as hell, and Bitcoin.Tax's rigid approach doesn't help.
Why Bitcoin.Tax's approach doesn't work for DeFi
Bitcoin.Tax treats every transaction like it happened in isolation, which is fucking useless for DeFi. In DeFi, transactions are interconnected - your yield farming strategy involves multiple protocols, token swaps, and fee payments that need to be tracked as related activities.
CoinLedger and Koinly actually understand DeFi exists, unlike Bitcoin.Tax which thinks it's still 2013. When you interact with Compound or Aave, these platforms recognize the patterns. Bitcoin.Tax still treats every Ethereum transaction as a mystery that needs manual investigation. I spent six hours last tax season trying to figure out which Uniswap transactions were actually related to the same position.
The result? You'll spend your entire weekend manually tagging transactions, figuring out cost basis for LP tokens, and trying to match up related DeFi activities that the platform couldn't connect automatically.
DeFi isn't going away, and if your crypto activity goes beyond basic trading, Bitcoin.Tax's limitations will cost you more time than the subscription fees for better alternatives.