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Tax Amendments by States

State Tax

Tax Amendment dates and forms by state are listed below. Tax amendments are generally due as soon as you discovered an error on your eFiled or filed state tax return.  If you filed your income tax return on time and you do not owe taxes as a result of the tax amendment, generally you should not be subject to a late payment penalty. 

In some cases, your state and/or the IRS may be able to correct the error on your tax return over the phone. See how to contact your state by clicking on the map below or see how to contact the IRS here.

Some errors that may require a tax amendment are:

  • Mathematical error on original return
  • Addition income to report, such as a form received after filing
  • Filing status adjustment
  • Dependent status adjustment
  • Tax credit adjustment
  • Tax deduction adjustment
  • Protective claim for refund
  • Reservation source income adjustments
  • Pass-through entity adjustments
  • Federal or state audit and/or adjustments
  • 2020 unemployment exclusion adjustment (if not automatic by state).

Click on the interactive state map below for specific state related tax amendment guidelines and tax forms on how to prepare previous year tax returns. Also see a comprehensive overlook of state income taxes.

Each of the eFile.com state tax amendment pages has amendment related forms and instructions. See federal or IRS related income tax return amendment instructions.

Interactive State Map


State Tax Amendment Information

In the chart below, see states with links directly to their amendment page on eFile.com. Many states have straightforward amendment procedures where a taxpayer can re-prepare their return, then simply check a box at the top of the form to indicate that it is an amended return. Other states require an amendment form to be filled in, similar to the federal tax amendment form. Click on your respective state to find out how to file your state amendment.

Alaska - No Income Taxes
Florida - No Income Taxes.
Nevada - No Income Taxes
New Hampshire - No Taxes on earned Income
South Dakota - No Income Taxes
Texas - No Income Taxes
Texas - No Income Taxes
Washington - No Income Taxes
Wyoming - No Income Taxes