Since this is an ionic compound, name the cation first and then the anion.
Cation: tin (Sn)
Anion: sulfate (SO4)
It doesn't matter with ionic compounds how many cations/anions you have, but mention the charge of the tin, since it can take on +2 and +4 charges.
In this ionic compound, it has a +4 charge.
Tin (IV) sulfate
