Follow the steps to effectively complete the IN DoR Form ES-40 online.

1. Click ‘Get Form’ button to obtain the form and open it in the editor.
2. Enter your Social Security number in the designated field. If you are filing jointly, ensure to also include your spouse’s Social Security number.
3. Provide your full name by filling out your first name, initial, and last name. If applicable, enter your spouse’s name in the corresponding fields.
4. Input your present address including the number and street or rural route, followed by the city, state, and ZIP/Postal code.
5. Refer to the worksheet on the back of the form to calculate your estimated tax payment. Fill in the amounts as per the worksheet's guidance for lines 1 through 4.
6. Indicate the installment period by placing an ‘X’ in the box that corresponds to the payment you are making, whether it is the 1st, 2nd, 3rd, or 4th installment.
7. Mail the completed form along with your payment to the Indiana Department of Revenue at the address specified. If you are filing online, follow the provided digital instructions rather than mailing the form.
8. Review all entered information for accuracy before saving changes. You can then download, print, or share the completed form as needed.

Complete your tax documents online to ensure timely and accurate submissions.