Tax Credits vs Tax Deductions: What's the Difference

A tax deduction lowers the amount of your income that gets taxed. A tax credit lowers the actual tax you owe, dollar for dollar. They sound similar. They are very different, and the difference is usually large enough to change real money decisions.

This is a plain-English explainer, not tax advice. For a feel for how a refund or balance due fits into a budget, our budget calculator can help. For more vocabulary, see APR and interest rate, and the Learn hub for related topics.

The two words in one sentence each

• Deduction — reduces your taxable income.
• Credit — reduces your tax bill directly.

The Internal Revenue Service (IRS) at irs.gov defines both in plain English in IRS Publication 17, the all-purpose individual tax guide.

A worked example

Imagine you are in the 22% federal tax bracket for example purposes (these brackets change every year — always check the current numbers at irs.gov).

You qualify for one of two things:

• A $1,000 deduction. Your taxable income drops by $1,000. At a 22% rate, your tax bill drops by $220.
• A $1,000 credit. Your tax bill drops by $1,000.

Same dollar amount. Very different effect. A credit is almost always more valuable than a deduction of the same size.

Why credits are worth more

A deduction's value depends on your tax bracket. A $1,000 deduction:

• Saves $100 if you are in the 10% bracket.
• Saves $220 if you are in the 22% bracket.
• Saves $370 if you are in the 37% bracket.

A credit is worth its full face value to anyone who qualifies. A $1,000 credit saves $1,000 across all brackets.

This is why most lower-income tax breaks (like the Earned Income Tax Credit and the Child Tax Credit) are designed as credits — they deliver more help to people in lower brackets than equivalent deductions would.

Refundable vs nonrefundable credits

Credits come in two flavors:

• Nonrefundable credit — can reduce your tax bill to zero, but no further. Any leftover is lost.
• Refundable credit — can reduce your tax bill below zero, and the IRS sends you the remainder as a refund.

For example, you owe $500 in tax and qualify for a $1,000 credit:

• If the credit is nonrefundable, you save $500. The remaining $500 disappears.
• If the credit is refundable, you save the $500 and get a $400 refund (the remainder, minus any other rules). Some credits are partially refundable — see the IRS instructions for each one.

Common federal tax credits (general examples only)

A short tour from the IRS at irs.gov. Eligibility rules and dollar amounts change every year — these are examples, not guarantees:

• Earned Income Tax Credit (EITC) — for low-to-moderate income workers. Refundable. Often one of the largest credits a family can claim.
• Child Tax Credit (CTC) — for taxpayers with qualifying children. Partially refundable in many years.
• Child and Dependent Care Credit — for child care or dependent care so you can work.
• American Opportunity Tax Credit (AOTC) — for the first four years of post-secondary education. Partially refundable.
• Lifetime Learning Credit — for ongoing education expenses. Nonrefundable.
• Saver's Credit (Retirement Savings Contributions Credit) — for moderate-income taxpayers contributing to a retirement account.
• Premium Tax Credit — for some people who buy health insurance through the federal or state Marketplace.

The IRS publishes the rules and current dollar limits for each at irs.gov. Many states also offer their own credits.

Common federal tax deductions

There are two big buckets the IRS describes:

• Above-the-line deductions (also called adjustments) — reduce your gross income to get to your adjusted gross income (AGI). Available whether or not you itemize. Examples include traditional IRA contributions (if eligible), student loan interest (within limits), and HSA contributions.
• Below-the-line deductions — reduce your AGI to get to your taxable income. You either take the standard deduction or itemize (whichever is larger). See our standard deduction explained article for the standard side; itemized deductions include things like mortgage interest, state and local taxes (capped), and certain charitable contributions.

AGI and MAGI, in plain English

Two acronyms come up everywhere on a tax return:

• AGI (Adjusted Gross Income) — your total income minus above-the-line deductions. AGI is the number that decides eligibility for many tax credits.
• MAGI (Modified Adjusted Gross Income) — your AGI with certain items added back. The exact MAGI formula differs by program (the formula for IRA contributions is different from the formula for the Premium Tax Credit). The IRS gives the exact formula in the instructions for each form.

Both numbers appear on the front page of Form 1040 or its instructions. Many credits and deductions begin to phase out as AGI or MAGI rises.

What "phase out" means

Many tax breaks have an income range where they shrink to zero. For example, a credit might be fully available below an AGI of $X, partially available between $X and $Y, and unavailable above $Y. The exact thresholds change every year, and the IRS publishes them in the form instructions.

This matters because earning a small raise can sometimes push you out of a credit you previously claimed. A CPA or the IRS Free File at irs.gov/freefile can show how your specific situation lines up.

How to actually claim a credit or deduction

The basic steps:

1. Confirm eligibility using the rules in the IRS form instructions for the year.
2. Keep documentation — receipts, 1098s, W-2s, 1099s.
3. Enter the amount on the right line of your federal return (and your state return, if applicable).
4. File the return.

Tax preparation software, IRS Free File for those who qualify, and a CPA all walk through this in different ways.

Free help

A few free, government-backed routes:

• IRS Free File at irs.gov/freefile for taxpayers under the income limit each year.
• IRS Volunteer Income Tax Assistance (VITA) for people generally earning under a yearly threshold, and Tax Counseling for the Elderly (TCE) for people 60+.
• The IRS Interactive Tax Assistant at irs.gov for plain-English answers to specific eligibility questions.
• USA.gov's tax hub at usa.gov/taxes.
• Your state Department of Revenue for state-level credits and deductions.

A note on advice

This is general information, not tax advice. Your specific eligibility depends on your income, filing status, dependents, and other facts. Talk to a CPA or use the IRS Free File system for your situation.

Numbers and rules in this article change every year — always check the latest from the IRS, CFPB, and your state's consumer protection department.