2018 CD-429B Underpayment of Estimated Tax by C-Corporations
Corporations use Form CD-429B to determine whether the corporation owes interest on the underpayment of estimated tax and if so, the amount of interest.
High Call Volume
Due to the April 15 individual income tax filing deadline, we are experiencing a significantly higher than normal call volume. As a reult, wait times may be longer than usual. Click here for the latest tax season and refund processing information.
Fraud Alert: Beware of Text Scams
Beware of fake text messages asking you to click a link or provide information to get your state tax refund. NCDOR will never text you about your refund. Read more about protecting your personal information.
Extended Phone Hours Through April 17
Refund and Individual Income phone lines are open until 5:30 p.m. Monday–Friday to support taxpayers during filing season. All other phone lines close at 4:30 p.m. Review our customer service numbers.
Important Information Regarding the 2025 Income Tax Return
NCDOR issues guidance on how recent federal law changes affect your 2025 NC income tax return. Review the guidance.
Penny Shortage Alert
NCDOR issues Sales and Use Tax guidance for retailers rounding cash transactions. Review the guidance.