North Carolina is unusual: it offers no state income tax deduction or credit for 529 contributions, because the state repealed that deduction in 2014. That does not make a 529 worthless here — the federal tax-free growth is still valuable. This calculator is honest about the missing deduction and quantifies the benefit you actually get.
How it works
There is no upfront state deduction to compute. The real benefit is the income tax you avoid because the account’s earnings grow tax-free and come out tax-free for qualified education costs. The tool projects the growth, then values the tax on those earnings that you never have to pay:
future value = contribution compounded for the chosen years and return
earnings = future value - total contributions
tax saved = earnings * (federal rate + North Carolina flat rate)If you instead invested in a taxable account, that earnings amount would be taxed, so the avoided tax is your true 529 benefit in North Carolina.
Example
Contributing 3,000 dollars a year for 18 years at 6 percent grows to roughly 93,000 dollars, of which about 39,000 dollars is earnings. At a combined 26.5 percent rate (22 percent federal plus 4.5 percent state) you avoid roughly 10,300 dollars of tax on that growth — entirely from the federal-style tax shelter, not a state deduction.
Notes
This is a simplified projection. It assumes a steady return, ignores fees, and treats all withdrawals as qualified. Because North Carolina offers no deduction, residents can shop any state’s 529 plan on cost and options. Confirm the rules at cfnc.org and irs.gov.