That's amazing! 10 ETH is well over $30k. Talk about ROI....Taxes are taxes, you pay the same for capital gains if you hold for a year that you do on your payroll. Even short term capital gains are low if you're in a lower tax bracket. Thing is if you make so much on crypto increase your 401k to max and $6k into IRA, that way you can save a bunch, make a bunch, and get taxed as little as possible!