IRS mailed me a letter charging me $400 penalty for filing my Partnership return late. But I filed it early w/TurboTax Business (desktop). How do I prove it was on time?

[desert-rat]

I filed my LLC Partnership tax return on April 8, 2019 for the 2018 tax year. IRS is assessing a $400 penalty for "filing a late return, according to their records."

Well, according to my calendar, I filed it a week early. How do I prove this to them?

When I look in TurboTax Business desktop version, it just says "Status - Return Accepted".  It does not provide me with a date on which it was filed OR accepted by the IRS.

[VolvoGirl · Accepted solution]

I believe Business returns were due March 15.  They changed the due date a couple years ago.
https://ttlc.intuit.com/questions/1901514-tax-year-2018-calendar-important-dates-and-deadlines

[VolvoGirl]

1065 instructions see page 5 When to File
<a rel="nofollow" target="_blank" href="https://www.irs.gov/pub/irs-pdf/i1065.pdf">https://www.irs.gov/pub/irs-pdf/i1065.pdf</a>