Section 19 paragraph 1 StGB states that a fine is to be assessed in day fines and must amount to at least two day fines. The number of day fines is the sentencing component. It depends on the offence, culpability, the applicable penalty range and sentencing factors.
Section 19 paragraph 2 StGB concerns the amount of one day fine. It is based on the person’s personal circumstances and economic capacity at the time of the first-instance judgment. The statutory range is from at least 4 euros to at most 5,000 euros per day fine.
From a lawyer perspective, this two-step structure is the first point to check. A mistake in the number of day fines is different from a mistake in the daily amount. Income changes, dependants and fixed obligations must be evidenced.