I would like to fill several thousand 8824 transactions under the section 1031. Since each form 8824 is about 3 pages, it would take me about 10x - 100x longer to fill out the paperwork than it took me to do transactions themselves. Are there any practical suggestions on how to accomplish this for many transactions/like-kind exchanges? US only.
An amazing amount of misinformation on this thread. I'm answering for the US. I don't know about other countries.
Of course you have to pay taxes on your profits in cryptocurrencies. This is well established.
Whether you have to pay taxes on exchanges of one cryptocurrency for another depends on whether such transactions can be claimed as "like kind" transactions. Whether "like kind" applies to exchanges between cryptocurrencies is controversial. I think that the IRS will eventually rule that these transactions are _not_ like kind and I've read extensively on the issue. Others disagree.
If you choose to treat exchanges between cryptocurrencies as like kind transactions you have to declare them as such on IRS form 8824! Absolutely everyone who trades cryptocurrencies ignores this (except me, of course).
If the IRS rules that these transactions are not like kind, and you have filed form 8824, you are likely to be OK except that you will owe taxes, interest, and possibly penalties. If you haven't filed form 8824 I wouldn't want to be you.
Not a lawyer - just my well researched opinion.