Oddbean new post about login | logout Coinjoining during low fee environments kind of takes care of this as a benefit additional to privacy. You tend to end up with larger-size post-mix UTXOs with the change being the (presumably small % of your stash) area to worry about future spendability.
My tax software would read my transaction history and see a capital gain when entering the coinjoin and then as income when exiting the coinjoin (assuming the value is directed back at me)
Sounds like tax software to not use, or to edit the report it generates.
This is also how an IRS agent will make a determination on the taxes you owe unless you trace the coinjoin for them (if you get audited).
What is the point of coinjoining if you’re going to just link your input and output transactions for the government?
Well, coinjoins don't look like normal transactions, they look like coinjoins. I guess it depends on if you think you can lie to their face and get away with it. A field audit usually goes on for 2-3 years, and they don't really let up. If they think you are lying then it becomes a crimal investigation instead of a financial investigation. Just being honest with them is emotionally exhausting because of how intrusive they are. I'm guessing you've never had IRS agents audit you for all your crypto transactions before.
Nope, but it’s probably something that will increase in frequency. Moving business out of the US may be the only option for avoiding it if you want to maintain any privacy.