Only the earnings portion of a 529 withdrawal is penalized and taxed for non-qualified use — the original contributions were already after-tax dollars.
How it works
The withdrawal is split proportionally between contributions and earnings, based on the account’s overall earnings-to-balance ratio. The earnings portion is subject to both a 10% additional tax and ordinary income tax at the account owner’s marginal rate.
What this does not include
Certain exceptions waive the 10% penalty (though income tax on earnings still applies) — including scholarships received, death or disability of the beneficiary, and attendance at a U.S. military academy — this calculator computes the standard non-exception cost.
How to use this calculator
- Enter the withdrawal amount, total account balance, total earnings, and marginal tax rate.
Frequently asked questions
Why is only the earnings portion penalized, not the whole withdrawal?
Because contributions were made with after-tax dollars — taxing and penalizing them again would be double taxation; only the tax-advantaged growth (earnings) is subject to recapture when used improperly.
What counts as a “qualified” 529 expense?
Tuition, fees, books, and room and board for higher education, along with K-12 tuition up to certain limits and student loan repayment up to a lifetime cap — expenses outside these categories are non-qualified.
Can the account owner change the beneficiary instead of withdrawing?
Yes — changing the beneficiary to another qualifying family member avoids the non-qualified withdrawal penalty entirely, a common alternative when the original beneficiary doesn’t need all the funds.
