[doikor]

> These are typically cash heavy businesses ( as long as it is allowed ) and keeping revenue out of the books is as old as the Romans.

Cash is used in less then 5% of transactions here in Finland (and it is roughly the same in the rest of Nordics last time I checked). Basically I have not carried any cash with me for the last 10 years or so. I am a bit of an extreme case but none of my friends carry any cash with them either these days. Having a cash only business here would just mean that people would not do business with you. If you go to a bar/restaurant/whatever and say "I want to pay" at the end the default is that they bring you the payment terminal.

> I think you are pretty naive here.

I am not that is just how it is here.

Illegal tax evasion still happens but it is not done in the "lets just not put this transaction into our system" way. Most of it is just lying about deductible expenses after that is employing someone without an actual employment contract (and thus nobody is paying any taxes for anything on that). Small scale construction is the one field where the "I'll just take the money and write a fake receipt" is done in any meaningful amount here.

For the record the Finnish tax office collects somewhere between 92 to 96% of the tax revenue it should be receiving according to studies by them and the government. They believe they could get more but in their infinite wisdom every even slightly right leaning government in power has slashed their budgets (and thus less tax auditors) for the last couple decades even though every euro spent on the tax office budged brings in multiple times of that in tax revenue back (there is some limit where that is no longer the case but we are nowhere close to that)

[the-dude]

> Cash is used in less then 5% of transactions here in Finland

How does one compile statistics on unregistered transactions?