North Carolina state income tax calculator

Estimate North Carolina income tax using the flat 4.25% (2025) or 3.99% (2026) rate.

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How this calculator works

Step 1 starts with the North Carolina taxable income you already calculated on your return. If you are a part-year resident or nonresident, the tool applies the North Carolina income percentage you provide to focus on North Carolina-source income.

Step 2 applies North Carolina's flat rate for the selected year to estimate total tax.

Step 3 summarizes the effective and marginal rates so you can see how additional income would be taxed and whether your current estimate matches your expectations.

Frequently asked questions

What income should I enter?

Use North Carolina taxable income from your return. If you only know total income, estimate deductions first or use the standard deduction tool.

Do part-year residents prorate income?

Yes. Use the North Carolina income allocation percentage from your return to prorate taxable income before applying the North Carolina flat rate.

Does North Carolina use brackets?

No. North Carolina uses a single flat rate for all filing statuses. Filing status affects deductions and credits but not the rate.

Is this tax advice?

No. This tool provides estimates based on the inputs you provide and is not legal or tax advice.

This tool provides estimates based on North Carolina's flat individual income tax rate. Not legal or tax advice.

North Carolina state tax calculator

Quick answer

North Carolina uses 3.99% flat income tax rate in the current TaxGuide Pro calculator data. For 2026 planning, $60,000 single taxable income -> about $2,394 state income tax before credits. $120,000 married filing jointly taxable income -> about $4,788 state income tax before credits.

Also answers

  • North Carolina income tax calculator 2026
  • North Carolina state tax estimator
  • North Carolina income tax brackets
  • North Carolina income tax rate 2026
  • North Carolina state tax refund status

Good fit when

  • North Carolina residents checking 2026 tax planning
  • Part-year or nonresident North Carolina filers
  • Comparing state tax, withholding, refund, and deduction scenarios

Have ready

  • Filing status and residency
  • State taxable income or benefit amount
  • Withholding, payments, deductions, credits, or filing date as relevant

Result you get

Estimated North Carolina tax, effective rate, marginal rate, and worked examples from current calculator data.

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North Carolina state facts

Rate rules and worked examples

Examples use 2026 taxable income before credits or residency allocation. Use the official state source below to verify final filing guidance.

Income tax rule

North Carolina uses 3.99% flat income tax rate in the current TaxGuide Pro calculator data.

Single example

$60,000 single taxable income -> about $2,394 state income tax before credits.

Joint example

$120,000 married filing jointly taxable income -> about $4,788 state income tax before credits.

Deductions and exemptions

Residency, local taxes, deductions, credits, and special income rules can change the result.

Credits to review

Review dependent, household, income-based, and other North Carolina credits in the state credit finder, then confirm eligibility in official instructions.

Filing deadline

For a 2026 return filed in 2027, confirm the due date in published North Carolina instructions. State deadlines and disaster relief can differ from federal dates.

Refund processing

North Carolina does not guarantee one refund date for every return. E-filed, accurate returns with direct deposit are generally processed faster than paper or reviewed returns.

Official verification: North Carolina official tax agency.

How this calculation works

  • Uses state taxable income and residency allocation.
  • Applies the calculator's current state rate schedule.

Common mistakes and caveats

  • The result is an educational estimate, not a filed return or agency determination.
  • Residency, local taxes, deductions, credits, and special income rules can change the result.
  • Verify current forms, instructions, and deadlines with the official state tax agency.

FAQ

What is the North Carolina income tax rate for 2026?

North Carolina uses 3.99% flat income tax rate in the current TaxGuide Pro calculator data. The examples on this page use taxable income before credits, so final results can change when state deductions, credits, or residency allocation apply.

Does North Carolina tax retirement income?

North Carolina retirement income treatment can depend on the income type, age, and state exclusions. Use the North Carolina retirement tax checker for a state-specific review.

Does North Carolina tax Social Security benefits?

North Carolina Social Security treatment can differ from federal treatment. Use the North Carolina Social Security checker and verify the result with the official state source.

When will I get my North Carolina tax refund?

North Carolina refund timing depends on e-file versus paper filing, direct deposit, return accuracy, identity verification, and seasonal volume. Use the North Carolina refund timeline estimator and the official refund-status source for live updates.

Where should I verify my North Carolina tax result?

Use the official North Carolina revenue or tax agency sources linked in the sources section. TaxGuide Pro is an educational estimator and does not replace a filed state return or agency notice.

Last updated & sources

Last updated August 20, 2026.

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