The IRS will still accept your return, but you may have to pay penalties for filing late and for paying taxes late.
You get an extra 2 days to do your taxes this year, but you may not have the option of the late-night run to the post office.
Volunteer and community programs will help you with your taxes, though some set income limits or deal only with simple returns. Anyone can file free online.
If you went to college, hired child care or moved, you may be able to deduct at least some of your expenses. See other lesser-known deductions you don't want to overlook.
The federal government is ramping up its efforts to combat criminals who engage in identity theft to collect other people's tax refunds.
Which form you use to file your taxes depends on your circumstances. The simpler forms can only be used for simpler returns, for example.
If you made a mistake, you have several years to file an amended return. But you may owe a penalty if you underpaid your federal tax.
VIDEO ON MSN MONEY
Copyright © 2013 Microsoft. All rights reserved.
Fundamental company data and historical chart data provided by Morningstar Inc. Real-time index quotes and delayed quotes supplied by Morningstar Inc. Quotes delayed by up to 15 minutes, except where indicated otherwise. Fund summary, fund performance and dividend data provided by Morningstar Inc. Analyst recommendations provided by Zacks Investment Research. StockScouter data provided by Verus Analytics. IPO data provided by Hoover's Inc. Index membership data provided by Morningstar Inc.
For years, Todd Mills pushed Frito-Lay to make taco shells from Doritos. He died from a brain tumor on Thanksgiving.
The Market Dispatches column has been discontinued. Here's where to find the latest stock and business news on MSN Money, and the latest from market writer Charley Blaine.
MONEY & POLITICS
Breaking up big banks is an untested solution to the too big to fail problem that attempts to isolate and dismantle large, troubled institutions while protecting the rest of the economy.
Which store penalizes you for too many returns? And which one will let you retroactively apply coupons?
The IRS is struggling to combat identify thieves who file fraudulent tax returns in the names of older residents who don't need to file.