AOTC vs Lifetime Learning Credit

The tax code hands you two education credits and mostly lets you pick only one per student. Picking wrong costs a typical family $1,000 or more — and the deciding factors aren't obvious, because the two credits share an income limit but almost nothing else. Here's the choosing math.

What's the same, and what isn't?

Both credits reduce your tax bill dollar-for-dollar, both attach to qualified education expenses at an eligible school, and both phase out over the same income ranges: $80,000-$90,000 MAGI for single and head-of-household filers, $160,000-$180,000 for married filing jointly. Those thresholds aren't indexed for inflation — they've sat still for years while tuition hasn't. The 2025 reconciliation law made the AOTC permanent (it had been scheduled to sunset after 2025) and left the phase-out exactly where it was.

Everything else differs:

Which credit pays more? The short math

For an eligible undergraduate, the AOTC wins nearly every time. The AOTC is the only one of the two that pays 100% of anything: your first $2,000 of expenses comes back dollar-for-dollar, then 25 cents on the next $2,000. The LLC pays 20 cents on the dollar, period.

On $6,500 of tuition and required books, a single filer at $78,000 MAGI gets:

• AOTC: $2,500 ($2,000 + 25% × $2,000), with $1,000 refundable even at zero tax owed
• LLC: $1,300 (20% × $6,500), non-refundable

Same tuition, same income, $1,200 apart. The gap narrows as expenses grow past the AOTC's $4,000 of creditable dollars (its $2,500 cap versus the LLC's rising 20%), but the LLC's own $2,000 ceiling means it never actually catches up. And when income climbs into the phase-out, both credits shrink proportionally, which preserves the AOTC's advantage all the way down to zero. For a student who qualifies for both, the AOTC always pays at least as much. Run your own numbers through the education tax credit calculator to confirm.

When the Lifetime Learning Credit is the only option

The LLC exists for everyone the AOTC excludes:

• Graduate and professional students — past the first four years, no AOTC.
• Less-than-half-time students — one course a semester? LLC.
• Non-degree programs — a certificate, a community college class, or coursework that improves job skills. The statute literally says "acquire or improve job skills."
• A fifth year of undergrad that exhausted the AOTC's four-tax-year limit.

A graduate student with $12,000 of tuition at $165,000 joint MAGI gets 20% × $10,000 = $2,000, times the 75% phase-out fraction = $1,500. No AOTC is available at all — that's the whole story.

How the phase-out actually works

Both credits shrink on a straight line through the income range. Single filer: multiply the credit by (90,000 − MAGI) ÷ 10,000. At $82,000 that's 80% of the credit; at $85,000, 50%; at $90,000 or above, zero. Joint filers slide from $160,000 to $180,000 on a $20,000 ramp.

Two practical effects. First, the cliff is at the top — earning $89,999 still leaves 10 cents of credit on the dollar. Second, every $1,000 of extra MAGI inside the range costs a single filer $250 of AOTC, which occasionally makes a last-dollar raise slightly less golden than it looks. If you're near the range, the usual levers (traditional 401(k) or IRA contributions, HSA contributions) reduce MAGI dollar-for-dollar.

The mistakes that cost people the credit

1. Defaulting to the LLC in tax software. Some flows present it first; the AOTC's extra eligibility questions scare people off. Answer them.
2. Forgetting books for the AOTC. Form 1098-T reports tuition, but required course materials count too. A $700 textbook stack is $175 of additional credit inside the 25% band.
3. Counting 529 or scholarship-paid dollars. Expenses covered by tax-free funds don't count for either credit — double-counting them is a common audit trigger, and it means coordinating 529 withdrawals with the credit you're claiming (use 529 money for room and board, credit money for tuition).
4. Claiming an ineligible "fourth year." The AOTC's four years count tax years you could have claimed, not just did. A student claimed once as a freshman dependent has three left, not four.
5. Missing the dependent-versus-student claim. If the parents claim the student as a dependent, the parents claim the credit; if they don't, the student can. Neither gets it twice.

How it pairs with the student loan interest deduction

Education credits stack with the student loan interest deduction — they're different categories (credit versus above-the-line deduction), so paying tuition with loans and deducting the interest later works fine. The deduction's up-to-$2,500 phase-out ($85,000-$100,000 single, $175,000-$205,000 joint for 2026) sits higher than the credits' ranges, so plenty of households lose the credits first and keep the deduction. Families planning aid should also run their numbers through the FAFSA SAI calculator — the interplay between parent assets, the AOTC, and education tax coordination is where real money moves.

FAQs