North Carolina state income tax
Last updated: 2026-04-27
TL;DR / ELI5
Primary form: D-400
BasilTax engine: Yes — we calculate this state for you
Structure: flat
Flat rate with standard deduction.
North Carolina income tax at a glance
This guide explains how North Carolina fits into your overall filing picture. Your federal Form 1040 is only half the story—states add their own definitions, subtractions, credits, and withholding rules.
Most North Carolina residents will prepare D-400 alongside the federal return. Flat rate with standard deduction.
Withholding and W-2 boxes
If you work in North Carolina (or your employer withholds for North Carolina), compare boxes 15–17 on your Form W-2 to what you expect on the state return. Mismatches here are a common source of balance due surprises.
Credits, deductions, and quirks
State returns often start from federal adjusted gross income (AGI) and then apply state-specific subtractions, additions, credits, and alternative minimum taxes. Read your state instructions for the exact list—this page is a hub, not a substitute for official guidance.
Verification workflow
Upload your PDFs, assign them to a return, and run compute. When BasilTax supports North Carolina end-to-end, you can trace state lines to the same documents you used for federal. When support is still in progress, use BasilTax to lock down federal and broker schedules first, then complete North Carolina manually with confidence.
Ready to tie every line to your documents?
Upload your W-2s and 1099s—BasilTax extracts fields, computes federal and state, and explains each number with citations.
Frequently asked questions
- Does North Carolina have a state income tax?
- Yes—North Carolina has a state income tax system described on D-400. Flat rate with standard deduction.
- What form do I file for North Carolina?
- Most residents use D-400 for the state return, subject to exceptions for part-year residents and special situations. Always confirm the latest state instructions each filing season.
- Does BasilTax calculate North Carolina state tax?
- Yes—BasilTax includes North Carolina rules in the computation engine so your state return can align with your federal return when you upload your documents.