02/2013Form NC-40 - Individual Estimated Income Tax
You must pay estimated income tax if you are self employed or do not pay sufficient tax witholding. Estimated tax payments must be sent to the North Carolina Department of Revenue on a quarterly basis.
02/2013Form D-422 - Estimated Tax Underpayment Form
If you failed to pay or underpaid your estimated taxes for the past tax year, you must file form D-422 to calculate any interest or penalties due with your income tax return.
Tax-Rates.org provides free access to printable PDF versions of the most popular North Carolina tax forms. If the form you are looking for is not listed here, you will be able to find it on the North Carolina Department of Revenue's tax forms page.