Unfortunately, you can't do Paypal at BISQ. The same reasons, I think .... - reversible.
There's nothing unfortunate about that. PayPal has been anti freedom since day one, the fees are ridiculous, and there're little protections for sellers. It's the worst payment processor for businesses, and only results in consumers paying higher prices for the privilege of using PayPal.
And, it's reversable for months.
Eliminating the risk part, the other issue with PayPal now for US people is the taxes.
PayPal is now forced to issue tax forms if you receive more then $600 a year in total. If you only get as F&F you can 'explain it away' as getting paid back for things. However, getting it as G&S there is no possibility of not paying taxes on it unless you have a way of writing it off.
Just saying....
-Dave
I use Zelle to transact with fiat on Bisq, which is basically just a direct withdrawal from, or deposit to my bank account. There're are provisions to pay for services or goods, but it's mostly a way to pay individuals. The same tax implications would apply regardless of which payment service one used.
As for what to claim on your taxes, I think it's best to use legitimate deductions to reduce your tax burden.
If you're buying bitcoin, keep accurate records of the costs. For the coins I earn from the campaigns I'm subscribed to, I claim the USD value (at the time of payment) as "subcontractor" income, and that's the "cost" I attribute to the coins for my records. To reduce the tax burden I can claim a portion of my house as a "home office." I can also deduct a percentage of my service fees for internet and electricity. Any equipment I need to buy for my computer can also be deducted, either in part or in whole depending on it's intended use.
Keeping good records of my costs makes it easy to determine capital gains when (if) I sell. There are also options when doing this, i.e. you can pick specific UTXOs to sell that have a smaller capital gains to claim, or you can use your average cost. But what ever way you chose, you have to stick to it.
It doesn't pay to lie to the IRS, and these days they're armed!