It could take months. The IRS is backlogged and there are people still waiting for mail-filed returns to be processed from ages ago. Why do you not want to e-file? Mailing it in now is unlikely to get you fast results--and will preclude you from changing your mind later when you decide you should have e-filed.
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
