Tax Calendar
September 15 — Individuals
Make a payment of your 2016 estimated tax if you are not paying your income tax for the year through withholding (or will not pay in enough tax that way). Use Form 1040-ES. Use Form 1040-ES. This is the third installment date for estimated tax in 2016. For more information, see Publication 505. September 15 — Corporations File a 2015 calendar year income tax return (Form 1120) and pay any tax, interest, and penalties due. This due date applies only