Tax Day 2022 is not a done deal! If you filed an extension by April 18, you have until October 17 to file your 2021 return. If you are an expat, you get an automatic extension until June 15, which means that it’s not too late to extend to October 17. Keep in mind that extensions only apply to filing, not paying! If you owe tax it was due by April 18…interest and penalties apply to all payments owed to the IRS after that date.