Form E-6 at a glance
What it is: Indiana Form E-6, Estimated Quarterly Income Tax Returns, can be used during the current calendar or fiscal year to open a new estimated account and receive preprinted Corporate Estimated Quarterly Income Tax Returns, Form IT-6.
Where and when to file: Mail the completed Form E-6 to: Indiana Department of Revenue, Corporate Tax Division, P.O. Box 7228, Indianapolis, IN 46207-7228
Taxpayers that are required to pay corporate estimated income tax and do not have an established estimated tax account must submit a completed Form E-6.
Corporate taxpayers that have an Indiana income tax return on file for the previous year will automatically be issued a current preprinted Form IT-6 packet.
A filled-in Form E-6 example: a corporation opens a new estimated account

How to fill out Form E-6, box by box
Federal Employer Identification Number and Indiana Taxpayer Identification Number
Check If This Is for a New Estimated Account
Name of Corporation or Organization, Street, City and Tax Year Ending
Quarter and amount paid

If you are remitting a payment with this form, indicate quarter and amount paid: Enter 1, 2, 3, 4, or 5 as the Quarter and the Amount.
If a payment is being submitted with this form, make the check payable (in U.S. funds) to the Indiana Department of Revenue.
Include payment if Form E-6 is submitted within 30 days of the due date of your quarterly return.
Make a timely (fifth quarter) payment by the original due date when an extension of time to file the annual return is requested.
Enter next starting quarter needed
More rules for Form E-6
Businesses can pay their estimated taxes owed to DOR or view their payment history online at INTIME.dor.in.gov: select the "Get Started" link, then select "Make a payment" under "Payments".
Corporate taxpayers may verify their state estimated tax payments and balances online: to access your estimated tax information, visit www.in.gov/dor/4340.htm and view by clicking on "Get Started".
Form E-6 may be used in lieu of Form IT-6 whenever the quarterly return with the preprinted estimated account information is not available.
Taxpayers required to file corporate estimated quarterly income tax returns use Form IT-6 unless the remittance is made via electronic funds transfer (EFT).
Common questions about Form E-6
Is there a deadline?
The estimated income tax payment and Form E-6 (and IT-6) are due on April 20, June 20, Sept. 20, and Dec. 20 of the tax year if filing on a calendar-year basis. If filing on a fiscal-year basis, the estimated quarterly income tax return is due on the 20th day of the fourth, sixth, ninth, and 12th months of the tax year.
Where do I file it?
Mail the completed Form E-6 to: Indiana Department of Revenue, Corporate Tax Division, P.O. Box 7228, Indianapolis, IN 46207-7228
Are there fees?
If paying by credit card, a fee will be charged by the credit card processor based on the amount you are paying. There is no fee for an ACH (e-check) payment.
Is there a penalty?
When a payment is due and additional time is necessary for filing the annual income tax return, a penalty for late payment will not be assessed if at least 90% of the tax is paid by the original due date and the remaining balance plus interest is paid in full within the extended due date. An additional penalty of 10% may be assessed for the underpayment of estimated quarterly tax due.
When is this form not the right one?
If there is a change of address, name, or federal employer identification number (FEIN) for your estimated account, use the proper form included in your Form IT-6 packet. Do not use Form E-6 or Form IT-6 to request such changes to your estimated account.
Sources
[1] Form E-6 (R9 / 12-20), Request for Indiana Corporate Estimated Quarterly Income Tax Returns, Indiana Department of Revenue (the Official source link on this page).





