To pay quarterly taxes in NC, send the North Carolina Department of Revenue four equal installments of your projected state income tax, due April 15, June 15, September 15, and January 15. You can pay online at the NCDOR website or mail Form NC-40 with a check. The requirement kicks in if you expect to owe $1,000 or more in NC tax after subtracting withholding and credits, which mostly catches self-employed workers, independent contractors, and people with substantial investment or rental income.
Who Has to Make Estimated Payments
North Carolina’s threshold is simple. If the tax due on your return, after subtracting withholding and allowable credits, comes to $1,000 or more, you’re required to make estimated payments.1North Carolina Department of Revenue. Estimated Income Tax
There’s one meaningful exemption. If you had zero North Carolina income tax liability the prior year and that year covered a full 12 months, you don’t owe estimated payments for the current year. A full-time employee who leaves a W-2 job to freelance and had no NC balance due the previous year effectively gets a one-year runway before the quarterly requirement starts.
The 2026 Quarterly Deadlines
The four installments follow a fixed statutory schedule:2North Carolina General Assembly. North Carolina Code 105-163.15 – Failure by Individual to Pay Estimated Income Tax; Interest
- Installment 1: April 15, 2026
- Installment 2: June 15, 2026
- Installment 3: September 15, 2026
- Installment 4: January 15, 2027
All four dates land on weekdays in 2026, so no holiday or weekend shifts apply. Timeliness is measured by the postmark on a mailed envelope or the date an electronic payment processes.
You can skip the January 15 installment entirely if you file your complete NC return by January 31 of the following year and pay the full balance at that time.1North Carolina Department of Revenue. Estimated Income Tax Useful if your records come together quickly and you’d rather settle up once than send a fourth check and then file.
Figuring Out How Much to Pay
Each installment is 25% of your projected total NC tax for the year. To project that total, you need the rate, your standard deduction, and a reasonable income estimate.
The 2026 Rate
North Carolina’s flat individual income tax rate for taxable years after 2025 is 3.99%.3North Carolina Department of Revenue. Tax Rate Schedules That’s down from 4.25% in 2025.
Standard Deduction
North Carolina sets its own standard deduction, independent of the federal number. The most recent published amounts cover tax year 2025:4North Carolina Department of Revenue. North Carolina Standard Deduction or North Carolina Itemized Deductions
- Single: $12,750
- Married filing jointly or qualifying surviving spouse: $25,500
- Married filing separately (if spouse does not itemize): $12,750
- Head of household: $19,125
If your spouse itemizes, your deduction as a married-filing-separately filer drops to zero. NCDOR had not yet published 2026-specific figures at the time of writing, so check the Department of Revenue site before you lock in your first installment.
Running the Math
Project your gross income from all sources. Subtract the NC standard deduction (or itemized total). Multiply what’s left by 0.0399. Subtract any withholding that’s going to North Carolina. If the remainder is $1,000 or more, divide by four.
A single freelancer expecting $80,000 in net self-employment income would subtract the $12,750 standard deduction, leaving $67,250 taxable. At 3.99%, annual tax runs about $2,683. With no withholding, each quarterly payment is roughly $671.
How to Submit a Payment
Online
NCDOR accepts estimated payments online at no cost.5North Carolina Department of Revenue. File and Pay Choose “Individual Income Tax Estimated Tax Payment – NC-40,” enter your Social Security Number and payment details, and authorize a bank draft or supply credit card information. Save the confirmation number. That number is your proof of payment if anything is ever disputed.
By Mail
For paper filers, Form NC-40 can be generated on the NCDOR website after you enter your name and Social Security Number.6North Carolina Department of Revenue. NC-40, Individual Estimated Income Tax The form produces four vouchers numbered 1 through 4, one per quarter. Use the right voucher for the period you’re paying. Make the check or money order payable to the North Carolina Department of Revenue and write your SSN in the memo line.
Mail the voucher and payment to:1North Carolina Department of Revenue. Estimated Income Tax
North Carolina Department of Revenue
PO Box 25000
Raleigh, NC 27640-0630
No confirmation comes back for paper payments. Watch your bank statement to make sure the check clears, and keep the canceled check or money order copy. You’ll need the record when you file your annual return and claim credit for payments already made.
Safe Harbor: How to Avoid Underpayment Interest
Nobody projects income perfectly. North Carolina’s safe harbor keeps you clear of underpayment interest as long as your total withholding and timely estimated payments equal at least the lesser of:2North Carolina General Assembly. North Carolina Code 105-163.15 – Failure by Individual to Pay Estimated Income Tax; Interest
- 90% of the tax shown on your current-year return, or
- 100% of the tax shown on your prior-year return (if that year covered a full 12 months)
The prior-year option is easier when income is unpredictable. If your 2025 NC tax was $3,000, paying at least $3,000 across your 2026 installments ($750 per quarter) keeps you out of interest territory no matter how 2026 ends up. You’ll still owe any remaining balance at filing, but without a penalty.
You’re also exempt from underpayment interest if your total tax after withholding and credits is under $1,000, or if you had no NC liability the prior year.7North Carolina Department of Revenue. Form D-422 Underpayment of Estimated Tax by Individuals
One quirk worth knowing: when you do fall short, NC calculates interest separately for each installment. An overpayment in September does not retroactively fix a shortfall from April.8North Carolina Department of Revenue. Interest Overview The Secretary of Revenue sets the rate twice a year within a 5% to 16% band. For the first half of 2026 it’s 7%.9North Carolina Department of Revenue. Interest Rate for January 1, 2026 Through June 30, 2026
Adjusting Payments When Income Changes
Freelance income rarely arrives in neat quarters. If your projection changes after you’ve already made one or two payments, you can redistribute what’s left rather than keep sending the original amount. The NC-40 instructions handle this with a simple rule:10North Carolina Department of Revenue. NC-40 Instructions
- If you first calculate at the June 15 installment, pay half the remaining estimated tax then, a quarter on September 15, and a quarter on January 15.
- If you first calculate at the September 15 installment, pay three-quarters then and the final quarter on January 15.
There’s also an annualized income method that computes tax on what you actually earned through each installment period, rather than assuming income arrived evenly. If a big contract lands in October and your earlier payments were legitimately small for the income you had then, the annualized method can reduce or eliminate interest on the earlier quarters. Keep dated records of when income actually came in. Those records are what makes an annualized-income calculation defensible.
If You Farm or Fish Commercially
If at least two-thirds of your gross income comes from farming (including oyster farming) or commercial fishing, you can skip quarterly payments entirely. File your full NC return and pay the balance by March 1 of the following year, and mark the exception box on Form D-400 to prevent an automated assessment.7North Carolina Department of Revenue. Form D-422 Underpayment of Estimated Tax by Individuals