Well over 90% of US public school teachers spend their own money on classroom supplies every year, according to National Education Association reporting, with average out-of-pocket spending somewhere in the $500-$900 range depending on the survey and school year. The federal government offers a partial offset -- the Educator Expense Deduction -- but the cap is smaller than most people assume.
Educator expense deduction calculator: what the cap actually is right now
For 2025 tax returns (the ones most educators are filing in 2026), the deduction is capped at $300 per eligible educator, or $600 on a joint return if both spouses are educators (still capped at $300 each). Starting with the 2026 tax year -- the return you'll file in 2027 -- the cap rises to $350 per educator, or $700 for a married couple who are both educators.
How much of teacher supplies is tax deductible, in real numbers
If you spent $700 out of pocket this year, filing a 2025 return, $300 of that is deductible and $400 is not -- it's simply a cost you absorbed. That ratio gets worse the more you spend: on NEA's higher reported average of $900, only a third of your spending is covered by the deduction.
Is $300 educator deduction enough? Not for most reported spending
Comparing the $300-$350 cap to NEA's reported $500-$900 average spending range, the deduction covers somewhere between a third and two-thirds of what the typical teacher is actually spending -- it was never designed to be a full reimbursement, just a partial one.
Teacher tax deduction 2026 classroom supplies: what changes next year
Two things change for the 2026 tax year: the above-the-line cap rises from $300 to $350, and the IRS also opens up an itemized deduction for qualifying educator expenses with no dollar cap (for educators who itemize rather than take the standard deduction). That second option can matter a lot for educators with heavier out-of-pocket spending, but it only applies starting with 2026 returns.
The Teacher Classroom Supply Spending & Tax Deduction Tracker splits your actual spending into what's deductible and what isn't, for either filing year, and compares it to the national average -- no login, no tax-prep upsell.
Try the Teacher Classroom Supply Spending & Tax Deduction Tracker →
Sources: IRS "The educator expense deduction can help offset out-of-pocket classroom costs"; NEA "Out-of-Pocket Spending on School Supplies Adds to Strain on Educators"; NYSUT and KPMCPA 2026 tax-year coverage.