@lighteye I like the way you think. The safest strategy is to regard bitcoin as the "Plan B", in other words, you never sell it. If you don't sell then the tax won't be too bad. If you sell then you have to pay tax on the profit.
Anyway, if you sell, what would you do with the fiat? the fiat might be useful for paying tax, but it is hardly a store of value.
I think in the some way @swissclive