Thanks for this. The tax laws in my country differ, but this code will be a good basis for my own.
One decision I have to make is how to deal with HP inflation. I can either treat the inflation as income and pay income tax with the advantage that HIVE <-> HIVE POWER conversions (power up/down) might not be treated as token conversion events. Or, I can treat HIVE POWER as VESTS, in which case I can ignore inflation because VESTS doesn't grow and then treat HIVE <-> HP conversions as token conversion events.
We don't pay capital gains tax on buy-and-hold investments here so the second option might be useful.
Aaaah tax.