Hence in the Beatles' Taxman they say
That's one for you 19 for me
and later on
And my advice for those who die, declare the pennies on your eyes
The first part was in relation to the UK tax policies in the 60's the latter is perhaps more of a reference to greek mythology, the pennies placed on the eyes of the dead was so they could pay Charon to take them over the river styx to the underworld.
But also takes a dig at the taxman as that would be income.