Financial glossary
Tax Credit
In plain English
An amount subtracted from calculated tax; refundable credits can also create a refund beyond tax already paid, while nonrefundable credits cannot.
Tax credit
A tax credit reduces calculated tax. This differs from a deduction, which reduces income before tax is calculated.
A nonrefundable credit can generally reduce the applicable tax to zero but cannot, by itself, create a refund beyond payments. A refundable credit may produce or increase a refund after liability reaches zero, subject to eligibility, income limits, phaseouts, and refundability rules.
The same dollar amount can therefore have very different effects as a deduction and a credit. A $1,000 deduction saves only the tax attributable to $1,000 of taxable income, while a fully usable $1,000 credit can reduce tax by $1,000.
ToolGrym’s federal income tax calculator treats the entered credit amount as nonrefundable. It does not determine eligibility or calculate refundable portions.
Related calculators
- 2026 Federal Income Tax CalculatorEstimate 2026 federal income tax using current brackets, filing status, deductions, and credits. See taxable income, marginal rate, and effective rate.
- 2026 Tax Refund EstimatorEstimate a 2026 federal refund or amount owed from projected tax liability, withholding, payments, deductions, and nonrefundable credits.