He worked on it and completed it.
“”Taxman” is a song by the English rock band the Beatles from their 1966 album Revolver. Written by the group’s lead guitarist, George Harrison, with some lyrical assistance from John Lennon”
And he liked it.
But kick him in the nuts some more. If Lennon and his music upsets you.... seek help.
And the Columbians made it up.
Lennon also took some questionable credit for “Eleanor Rigby”, how come “Taxman” isn’t credited to Harrison/Lennon?