Follow the steps to successfully complete your NC NC-40 form online.

1. Press the ‘Get Form’ button to access the NC NC-40 form and open it in your online editor.
2. Begin by completing the worksheet on Page 2 to calculate your estimated income tax for the tax year.
3. In the given spaces, enter your name, address, and social security number. If filing jointly, include your partner's information as well. Make sure to indicate the year for which the payment is intended.
4. Calculate one-fourth of the amount from Line 11 of the worksheet and enter this in the ‘Amount of this Payment’ section on the NC NC-40 form. Note that if you had an overpayment on your previous year's tax return, you can apply that amount to your estimated tax payment at this stage.
5. If your income is reported on a fiscal year basis, ensure that you enter the correct due dates for your payments.
6. Prepare your payment by making your check or money order payable to the N.C. Department of Revenue, using only U.S. currency.
7. On the memo line of your payment, write the last four digits of your SSN, the tax year, and ‘NC-40’.
8. Double-check that the courtesy box and legal line on your check are accurate, and that your name, address, and daytime phone number are visible.
9. Mail the completed form along with your payment to the address provided on the form, ensuring not to separate the voucher from the rest of the document.

Complete your NC NC-40 form online today to ensure your estimated income tax payments are submitted accurately and on time.