If you are not working and your child gets disability do you have to file taxes?

You should always file your return, even (or especially) if you have no tax payment obligation or even requirement to file. Simply, many benefits once receives, Earned income Credit, the recent Tax Stimulus Payment to name a few, require a retuen to have been filed. Do it. Appealing to your common sense: Especially if you owed them no $, do you think the IRS allow you to NOT file a return if it wasn't actually good for them!