Yes, 10% of income would be unfair to low earners. That's why, like the article explained, the system is based on disposable income. Precise formula is describe

Yes, 10% of income would be unfair to low earners. That's why, like the article explained, the system is based on disposable income. Precise formula is described at https://en.wikipedia.org/wiki/Day-fine#Finland https://en.wikipedia.org/wiki/Day-fine#Finland For big earners it still hurts, as you can read from the article (search for rhinos).