The Internal Revenue Service reminds taxpayers who filed for an income tax filing extension the deadline is Monday.
IRS spokesman Dan Boone in Nashville said 170,000 Tennesseans asked for more time to file their taxes.
The agency hopes late payers will use the online electronic filing. So far this year, nearly 2.3 million taxpayers in the state have filed online -- up about 6 percent from last year at this time.
Taxpayers wanting to file electronically can go online to www.irs.gov.
Electronic versions of standard tax forms are under Forms and Pubs.
For incomes under $57,000, the Free File option is under the Hot Topics banner.
The IRS says taxpayers who file online make fewer arithmetic mistakes.