Get Answers Support Tax Filings & Payments Other Forms Form 8809 & 15397 (Extension) How long does the IRS take to process my mailed extension Form 8809? Last modified 7/18/2025 12:51:41 AM EST The IRS usually takes 2–3 business days to process mailed Form 8809 submissions. However, during peak filing seasons, there may be slight delays. Once approved, you’ll receive a 30-day extension to file your information return. Was this helpful? Yes No Related Questions How much time do I have to mail recipient copies once I file an extension? What is the due date to file the 8809/15397 extension form? How can I find the extended due date when filing for an extension? Go to Home Page Need more help? Get in touch with our dedicated support team Contact Us (704) 684-4751 support@taxbandits.com Sign Up for a FREE TaxBandits Account! The Smart CPA Choice Register Now Already have an account? Sign in