Wouldnt highest cost basis be more recent thus possibly forcing short term capital gains?
Discussion
yes, if you actually sell inside 12 months, but defaulting to FIFO is likely way worse. .5 BTC purchased at $15k/sold at $100k - long-term gain tax $8500. Purchased at $65k/sold at $100k short term gain tax $6125 (for example). More importantly, all those old UTXO that you don't sell will step up basis when you pass them on 😉