Actually, I can attest that moving moving money between cryptos is most certainly a taxable event - both in terms of gain and loss. This year I owe over 40K in taxes from buying alt coins with other alt coins that had exploded in value. On the other side of the token (heh) you can write off any time you "harvest" a loss. Harvesting is a fascinating way to mitigate your loss at tax time while still being able to buy back your investment. My advice? Get with a CPA who really knows there sh** ... several are recommended on bitcoin.tax. I was pointed to the IRS guidance and did the reading myself. Don't get caught like I did this year. Cheers. If you need a reference to a crypto savvy CPA let me know!