After you file


@sexykey841 wrote:

How do we know for sure it cant be combined  if it's going to the same tax account 


The federal tax refund and the stimulus payment are from totally separate US Treasury accounts.  So they must be separate.

 

See this IRS website for a non-filer portal and when stimulus payments will be begin - https://www.irs.gov/newsroom/treasury-irs-launch-new-tool-to-help-non-filers-register-for-economic-i...