If the due date for filing a payment falls on a weekend or holiday when is the payment due? The payment is due the following business day by midnight (Central Time). March 30, 2017 12:04 Related articles When is sales tax due? TNTAP: Filing a Business Tax Return How do I calculate the amount of interest that is due on my late tax return? What is a payment type? How do I make an estimated payment in TNTAP?