death and taxes

Translations
смерть и налоги (неизбежные вещи)
They say nothing is certain but death and taxes.
Говорят, нет ничего более определённого, чем смерть и налоги.
Definitions
A phrase referring to the inevitability of certain things in life, specifically death and the obligation to pay taxes. It suggests that these are two unavoidable aspects of human existence.