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Re:Finland tax authorities matching Bitcoin transactions and... by trinitry3 on Friday April 20, 2018 @08:24AM (#16884163)
> Why should any government incentivize that?

Well maybe they shouldn't, but it's shitty to apply this kind of policy retroactively. (I don't know when they actually announced the fact that you can't deduct losses.)

Re:Finland tax authorities matching Bitcoin transactions and... by brlewis on Friday April 20, 2018 @10:47AM (#16885180)
https://en.wikipedia.org/wiki/Ex_post_facto_law#Finland

"Generally, the Finnish legal system does not permit ex post facto laws"

Re:Finland tax authorities matching Bitcoin transactions and... by zokier on Friday April 20, 2018 @01:16PM (#16886604)
Strictly speaking I don't think this thing is a law, but rather a policy. Also the same paragraph continues

> In civil matters, such as taxation, ex post facto laws may be made in some circumstances.