For the filing of my partnership tax return, I requested an extension with the filing of Form 7004. I believe that TurboTax recommended the mailing address for my business in zip 63109 was to Ogden UT 84201. The request was mailed March 9, 2020 in advance of the published date for returns. The finalized return was completed and efiled April 24, 2020 which included a copy of my completed form 7004. The IRS is saying that they did not receive my mailed Form 7004 for the extension and want to charge me $410 for a late filing. THere were USPS delays at this time and even now. I did not retain a copy of my mail receipt due to the small amount. Not told I might need proof of mailing the Form 2004. DO you suggest that return receipt mailing be used with standard extension.
