if doing taxes for 2 people not married who have a son and one claims him do i say no dependents on other

[suzannedoan]

if filing seperately and share a son does one only say has dependent

[TurboTaxSusan]

It would depend on what you agreed on. If you both agreed that only one of you would claim the dependant, then the other doesn't need to enter the child's info on their return.