It is essential to confirm the receipt of your submitted tax filing information by reaching out to your tax preparer, the Internal Revenue Service (IRS), or the appropriate state tax authority. If you are a c corp late filing penalty no tax due, it is still crucial to meet all relevant deadlines to avoid incurring additional penalties, regardless of whether any tax is due. To ensure that your filings are properly documented, consider utilizing tracking methods such as certified mail or obtaining e-filing confirmations, which provide an added layer of assurance and accountability.