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

1. Click the ‘Get Form’ button to access the IN DoR Form ES-40 online.
2. Enter your Social Security number in the designated field.
3. If applicable, enter your spouse's Social Security number.
4. Fill in your first name, middle initial, and last name.
5. If filing jointly, provide your spouse’s first name, middle initial, and last name.
6. Complete your present address, including the number and street, city, state, and zip/postal code.
7. Consult the worksheet provided at the back of the form to calculate your estimated tax payment. Begin by determining your state tax due and filling in the appropriate fields.
8. Add your county code, and enter the calculated county tax in the appropriate section.
9. If your spouse has a different county code, enter that information along with the respective county tax.
10. Add the state tax, your county tax, and your spouse's county tax to determine your total estimated tax installment payment.
11. Indicate the installment period information by placing an ‘X’ in the appropriate box for the installment payment you are making.
12. Review the completed form for accuracy and ensure all relevant information is filled in.
13. Save your changes and download the form if needed. You can also choose to print or share the form as required.

Complete your IN DoR Form ES-40 online today to ensure timely tax compliance.