How long does it take for mailed taxes to be accepted?

[kashix]

I didn't file for taxes last year because I only had a net investment loss, and frankly forgot about it.

This year, after the e-file date was closed, I decided to mail in the previous years taxes. This was slightly over a month ago. Now I'm trying to e-file this year's taxes but it's being rejected, I'm assuming due to a mismatch in the AGI. Does this mean my previous years taxes are not entered into the government's system yet? 

How long should I wait?

Would it be unwise to file this year and say I didn't file last year for it to be accepted? This will create a mismatch in the AGI if they do accept both.

Will I still receive the stimulus check?

Thanks in advance.

[VolvoGirl]

You can file 2019 before they process 2018.  Enter 0 for the 2018 AGI since you filed 2018 after Sept 2019.  Zero should work.

It will take them a while to process 2018 mailed returns.    They are not processing mailed returns right now. The mail is stacking up in trailers at the IRS.

See this IRS page for the latest information

https://www.irs.gov/newsroom/irs-operations-during-covid-19-mission-critical-functions-continue