That assumption is probably wrong.<p>Progressive income tax is no longer a very relevant factor for financing BI, or anything, in Finland. The main purpose of progressive tax in Finland is no longer about collecting revenue; it is about punishing those who are doing too well. That is very apparent from the public discourse.<p>So yes, Finland is likely somewhere on the right hand side of Laffer curve, particularly for high earners. (For low earners, many countries are; that&#x27;s where BI system might help).<p>Your location on Laffer curve is of course hard to prove because the world is such a volatile place -- you cannot experiment with different tax rates and see what happens, because all the other factors impacting revenue are changing all the time so no trial will produce consistent results.<p>But Finnish income tax progression is just about the tightest in the world. The highest decile (anyone earning more than €50k a year, gross) pays about 43 % of income tax revenue [0]. However, that revenue pales beside revenue from consumption taxes (VAT, which is now 25%, and fuel taxes, and vehicle taxes).<p>The country&#x27;s tax revenue is higher than ever, but it is not enough when  government spending goes up even faster. Public deficit is about 3.3 % of GDP [1]. Whatever we do with taxes is not going to fix that hole. Some control on the money-flow out will be needed.<p>Finland also does not spend as much as you would expect on health, schools, military, infrastructure, public security and just about anything you normally think of as the government&#x27;s role. There is one major thing where Finland spends comparatively more than other developed nations: transfers.<p>The motto of government seems to be &quot;if it moves, tax it; when it eventually stops moving, subsidize it&quot;.<p>And many people who are about to make a lot of money (e.g. sell the company they&#x27;ve grown) will run to Sweden as a tax refugee. Think about that. Run to Sweden as a tax refugee.<p>[0] <a href="http:&#x2F;&#x2F;tilastokeskus.fi&#x2F;tup&#x2F;suoluk&#x2F;suoluk_tulot.html" rel="nofollow">http:&#x2F;&#x2F;tilastokeskus.fi&#x2F;tup&#x2F;suoluk&#x2F;suoluk_tulot.html</a>
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