- the income/earnings
- (formal and official, includes things like unemployment benefits, capital gains and other income)
A fun look at the meaning of the German words for future, what "Zukunft" has to do with "kommen" and what other cool useful words with "-kunft" there are.
die Zukunft, die Auskunft, die Ankunft, die Herkunftopen article
A quick look at the meaning of "das Einkommen" and why the verb "einkommen" absolutely doesn't mean "to come in" (and what does) :)
das Einkommen, reinkommenopen article