The question is quite straightforward, as in the title.

I found myself discussing with a colleague the fact that according to some, fines should not be an absolute amount (e.g. 50 USD/EUR) but rather a percentage of the monthly income of the fined person (e.g. 1%).

The rationale brought forward is that such a system would be neutral, while the current one favours high income people, as they, feeling less affected by fines, are less inhibited by them.

Is there a proper political theory discussing the benefits and drawbacks of such an idea? Possibly also taking into account socio-economic considerations.

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    Just a real life example: my hometown, is near Switzerland. In the centre there is a pedestrian area. On a side of this pedestrian area, near a road that can be accessed by car only by residents there is pub which is (strangely, as it is quite insignificant) popular with Swiss rich peoples. Results: on Saturday evening many Swiss were driving their expensive cars or motorbikes in a forbidden road, parking inside the pedestrian area so to go to the pub. They didn't care about the law, because in Italy fines are not proportional to your income. If the fines were proportional, instead...
    – motoDrizzt
    Commented Mar 23, 2017 at 11:58
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    In Spain, for minor offenses that imply short jail sentences these are often replaced by días-multa, which results in its substiturion of a fine for each day of sentencing. The amount to fine for each day is related to the subject wealth (last time I read about it, it could range from 2 to 400 € /day). Link in spanish (mundojuridico.info/la-pena-de-multa).
    – SJuan76
    Commented Mar 23, 2017 at 12:02
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    Have a look at the wikipedia entry and thje references, maybe a good starting point en.wikipedia.org/wiki/Day-fine
    – Max
    Commented Mar 23, 2017 at 13:12
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    Implemented in Finland: theatlantic.com/business/archive/2015/03/…
    – pjc50
    Commented Mar 23, 2017 at 14:38
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    One problem with this is what exactly to make it proportional to - many very wealthy individuals have their finances set up in such a way to minimize their "income", in order to pay less income tax.
    – Tin Wizard
    Commented Mar 23, 2017 at 18:15

4 Answers 4


I think you might be looking for the idea of diminishing marginal utility. This is an idea from economics that says as we get more of something, each new item gives us less happiness. This is a very fundamental idea in economics and makes intuitive sense. If you don't have any pizza the first slice of pizza you get will make you really happy/full. The seventh slice of pizza you get, you probably can't eat anyways and so it isn't that useful to you. This principle applies to money as well. A billionaire is much less upset to have to pay a $700 fine than someone who is even out of credit and has to sell his car to pay the fine.

Economists love graphs. Like a lot.

Economics, however, is a positive discipline, focusing on 'what is' as opposed to a normative one focusing on what 'ought to be.' It defines utility, a simple proxy for happiness/wants/needs, and can analyze how policies might effect utility, but doesn't tell us if those policies are good or bad. There is, however, a political/philosophical idea that emphasizes maximizing utility, utilitarianism. Utilitarianism can be taken in many forms and degrees, from a full fledged, materialistic, only material consequences matter, kind of philosophy to a more moderated, let's look at how this policy effects people's happiness and factor that into our broader framework for justice. In your case one could make a utilitarian argument that fines should be equal, not in terms of money, but in terms of utility, since utility is what really matters. That means understanding how much each dollar means to each person in terms of utility. That's not really knowable, but as a step in that direction, a utilitarian would argue that charging fines based on one's income or wealth is much better than just having a flat rate. This is one of the major arguments for a progressive income tax as well.

  • There would need to be minimums right? Somebody with no income can't just have complete disregard for fineable offense(even though this is basically what rich people do now)
    – Cruncher
    Commented Mar 23, 2017 at 16:53
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    If someone has no income and no assets, how would a fine be collected from them?
    – stannius
    Commented Mar 23, 2017 at 18:24
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    @cruncher utility theory would never suggest a zero fine. Someone with no assets and no income would still have to get a suitable punishment for an equitable decrease in utility as everyone else, it might just have to be a small sum of money or another punishment like community service.
    – lazarusL
    Commented Mar 23, 2017 at 19:47
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    @lazarusL Ah I see. So assuming you could determine equal utility for everyone it would be a perfect system. The problem of course, as noted, that this is practically impossible
    – Cruncher
    Commented Mar 23, 2017 at 20:58

This idea actually is partly realized in the German law where fines or penalties for felonies are expressed as multiples of "Tagessätze" (daily available income). For misdemeanors the situation is mixed; the law prescribes to "take the economic situation of the defendant into account in the case of higher fines" (OWiG Par. 17.3).

The idea to make all fines income dependent has been discussed; I remember the counter-argument that it is not the objective of the political and judicial system to make everybody perfectly equal. The political system in Germany acknowledges and respects private property, and by implication different amounts of it; i.e. the existence of rich people is implicit in a meaningful concept of private property.

In short: Being rich means being privileged; being able to just shrug and pay their parking ticket is part of those privileges.

Another counter-argument is the necessary effort. Running a light as a pedestrian or similar lesser infractions are usually pursued by a form letter and minimal administrative overhead (to the degree this oxymoron is realizable). Laying your available income open amounts to producing evidence for rent, loans, child support etc. which must be checked in order to be effective. For petty penalties the result seems not worth the effort.

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    "In short: Being rich means being privileged; being able to just shrug and pay their parking ticket is part of those privileges." Is that your opinion, or do you imply that this has officially been officially stated/written down by some part of the German political/judicial administration?
    – AnoE
    Commented Mar 24, 2017 at 10:30
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    @AnoE I remember it as a rationale given, but most likely not in an official publication (however euphemistically). Perhaps a political science teacher in the 80s. But it seems a logical implication of acknowledging that there are rich people, and of refusing policies that aim at perfect economic equality. It is the very meaning of being rich that one can afford things others can't. Commented Mar 24, 2017 at 11:27

The UK has a similar system, at least for the lowest level courts (magistrates' courts), based on weekly income, It's more a practical set of rules than a "theory", though (source).

Offences are categorized into 6 "bands," with the mid-range of the fines for each band varying between 0.5 times and 6 times weekly income.

As the other answer said about the German system, this is not used for fixed penalty offences (e.g. minor speeding offences), but the accused always has the option to put such offences before a court instead of paying the fixed penalty. In most instances, taking a straightforward fixed penalty offence to court would be likely to incur a higher fine, since the fine would reflect the higher costs involved and/or the cost of legal representation for the accused.

The OP's question is part of the wider issue of choosing the most appropriate sentence for an a particular offender, for example imprisonment, a fine, some form of community service, or a combination of those options.

A rich person may find a number of hours of compulsory community work, spread over several weeks or weekends, a more severe punishment than a fine that can easily be paid and forgotten about.


One problem with such system is how to determine what a person's income is. There are many cases where rich people have little to no official income (because of using both legal and illegal loopholes). So you could easily get in the case where the company's owner pays less fine than his secretary.

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    In Germany, trying to play games while the proper daily rate is determined, can be quite costly. Judges are not stupid. And there is a risk: As the convicted person, you are actually given the choice between paying and jail - but paying is much more cost effective for the state, which is why you get that choice. If the judge thinks you are playing games, he or she can take that choice away and you go to jail.
    – gnasher729
    Commented Mar 24, 2017 at 21:55

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