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COVID-19 Update:

The IRS and the U.S. Treasury department have extended the federal April 15th filing and tax payment deadlines to July 15, 2020. Since the first estimated tax payment for 2020 was originally due April 15th, that due date is also extended to July 15th.

As of now, all additional estimated tax payments are due as originally scheduled, but legislation is pending. Follow our COVID-19 and your Taxes page for updates.


If your corporation follows a calendar year, your estimated corporate tax payments are due April 15, June 15, September 15, and December 15. If the date falls on a Saturday, Sunday, or legal holiday, payment is due the next business day.

If you have completed your tax return, locate your estimated tax due in TaxAct® by following these steps:

  1. Start the TaxAct Business 1120 program
  2. Click Forms and select Form 1120-W - Estimated Tax for Corporations
  3. Scroll to the bottom of Form 1120-W for due dates and estimated tax due. Pay your estimated taxes online for free through the Electronic Federal Tax Payment System (EFTPS), or arrange for payment through a financial institution, payroll service, or other trusted third party.

If you have not completed your tax return, calculate your estimated tax due by following these steps:

  1. Start the TaxAct Business 1120 program
  2. Click Federal. On smaller devices, click the menu icon in the upper left-hand corner, then select Federal
  3. Select 2020 Estimated Tax Payments
  4. Answer the questions to calculate your estimated tax due. Pay your estimated taxes online for free through the Electronic Federal Tax Payment System (EFTPS) or arrange for payment through a financial institution, payroll service, or other trusted third party.

See the IRS Instructions for Form 1120-W for additional information about making estimated tax payments.

Note: If you are an S corporation expecting to owe federal tax of $500 or more on your 1120S return, you may be required to make estimated tax payments. S corporations traditionally do not pay income tax. However, if you are a pass-through entity, you may be required to pay tax on LIFO (last in first out) recapture, capital gains, or built-in gains. For more information, see the IRS Instructions for Form 1120S.


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