What should you do if you already filed your federal tax return and then discover a mistake? Don't worry; you have a chance to fix errors by filing an amended tax return. This year you can use the new IRS tool, ‘Where's My Amended Return?’ to easily track the status of your amended tax return. Here are 10 facts you should know about filing an amended tax return.

  1. Use Form 1040X, Amended U.S. Individual Income Tax Return, to file an amended tax return. An amended return cannot be e-filed. You must file it on paper.
  2. You should consider filing an amended tax return if there is a change in your filing status, income, deductions or credits.
  3. You normally do not need to file an amended return to correct math errors. The IRS will automatically make those changes for you. Also, do not file an amended return because you forgot to attach tax forms, such as W-2s or schedules. The IRS normally will send a request asking for those.
  4. Generally, you must file Form 1040X within three years from the date you filed your original tax return or within two years of the date you paid the tax, whichever is later. Be sure to enter the year of the return you are amending at the top of Form 1040X.
  5. If you are amending more than one tax return, prepare a 1040X for each return and mail them to the IRS in separate envelopes. You will find the appropriate IRS address to mail your return to in the Form 1040X instructions.
  6. If your changes involve the need for another schedule or form, you must attach that schedule or form to the amended return.
  7. If you are filing an amended tax return to claim an additional refund, wait until you have received your original tax refund before filing Form 1040X. Amended returns take up to 12 weeks to process. You may cash your original refund check while waiting for the additional refund.
  8. If you owe additional taxes with Form 1040X, file it and pay the tax as soon as possible to minimize interest and penalties.
  9. You can track the status of your amended tax return three weeks after you file with the IRS's new tool called, ‘Where's My Amended Return?’ The automated tool is available on IRS.gov and by phone at 866-464-2050. The online and phone tools are available in English and Spanish. You can track the status of your amended return for the current year and up to three prior years.
  10. To use either ‘Where's My Amended Return?’ tool, just enter your taxpayer identification number (usually your Social Security number), date of birth and zip code. If you have filed amended returns for more than one year, you can select each year individually to check the status of each. If you use the tool by phone, you will not need to call a different IRS phone number unless the tool tells you to do so.

TaxACT Deluxe includes Form 1040X. View Instructions for amending your federal return and instructions for amending your state return.

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March 2015
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Upcoming Tax Dates

March 2All businesses
File information returns (for example, Forms 1099) for certain payments you made during 2014.

March 2Farmers & fishermen
File your 2014 income tax return (Form 1040) and pay any tax due - Details

March 2Payers of gambling winnings.
File Form 1096 along with Copy A of all the Forms W2G you issued for 2014. If you file Forms W2G electronically, your due date for filing them with the IRS will be extended to March 31. The due date for giving the recipient these forms remains February 2.

March 2 All employers
File Form W3, Transmittal of Wage and Tax Statements, along with Copy A of all the Forms W2 you issued for 2014. If you file Forms W2 electronically, your due date for filing them with the SSA will be extended to March 31. The due date for giving the recipient these forms remains February 2.

March 2 Large food and beverage establishment employers
File Form 8027, Employer's Annual Information Return of Tip Income and Allocated Tips. Use Form 8027T, Transmittal of Employer's Annual Information Return of Tip Income and Allocated Tips, to summarize and transmit Forms 8027 if you have more than one establishment. If you file Forms 8027 electronically, your due date for filing them with the IRS will be extended to March 31.

March 2 Wagering tax
File Form 730 and pay the tax on wagers accepted during January.

March 2 Heavy highway vehicle use tax
File Form 2290 and pay the tax for vehicles first used in January.

March 10 Employees who work for tips
If you received $20 or more in tips during February, report them to your employer - Details

March 11 Communications and air transportation taxes under the alternative method.
Deposit the tax included in amounts billed or tickets sold during the first 15 days of February.

March 13 Regular method taxes
Deposit the tax for the last 13 days of February.

March 16 Corporations
File a 2014 calendar year income tax return (Form 1120) and pay any tax due - Details

March 16 S Corporations
File a 2014 calendar year income tax return (Form 1120S) and pay any tax due - Details

March 16 S Corporation election
File Form 2553, Election by a Small Business Corporation, to elect to be treated as an S corporation beginning with calendar year 2015. If Form 2553 is filed late, S corporation treatment will begin with calendar year 2016.

March 16 Electing larger partnerships
Provide each partner with a copy of Schedule K1 (Form 1065B), Partner's Share of Income (Loss) From an Electing Large Partnership, or a substitute Schedule K1. This due date applies even if the partnership requests an extension of time to file the Form 1065B by filing Form 7004

March 16 Social security, Medicare, and withheld income tax
If the monthly deposit rule Page 6 Publication 509 (2015) applies, deposit the tax for payments in February.

March 16 Nonpayroll withholding
If the monthly deposit rule applies, deposit the tax for payments in February.

March 25 Communications and air transportation taxes under the alternative method.
Deposit the tax included in amounts billed or tickets sold during the last 14 days of February.

March 27 Regular method taxes
Deposit the tax for the first 15 days of March.

March 31 Electronic filing of Forms W2
File copies of all the Forms W2 you issued for 2014. This due date applies only if you electronically file.

March 31 Electronic filing of Forms W2G
File copies of all the Forms W2G you issued for 2014. This due date applies only if you electronically file.

March 31 Electronic filing of Forms 8027
File Forms 8027 for 2014. This due date applies only if you electronically file.

March 31 Wagering tax
File Form 730 and pay the tax on wagers accepted during February.

March 31 Heavy highway vehicle use tax
File Form 2290 and pay the tax for vehicles first used in February.

March 31 Electronic filing of Forms 1097, 1098, 1099, 3921, 3922, and W2G.
File Forms 1097, 1098, 1099, 3921, 3922, and W2G with the IRS. This due date applies only if you file electronically. Otherwise, see March 2. The due date for giving the recipient these forms generally remains February 2. View More Tax Dates