W-2 Box 10 — Dependent care benefits
Total dependent care benefits your employer paid (including through a Section 129 dependent care FSA). Up to $5,000 MFJ can be excluded from Box 1.
At a glance — Box 10
- Box name
- Dependent care benefits
- Reports to
- Form 2441, Part III — Dependent Care Benefits.
- Check against
- Your year-end dependent care FSA statement or paystub YTD DCFSA total.
What Box 10 means
Box 10 reports the total dependent care benefits provided by your employer during the year — typically contributions to a Section 129 dependent care FSA, plus any direct employer-paid childcare. The annual exclusion is $5,000 ($2,500 for MFS) across all employers. Amounts above that threshold are added back to Box 1 as wages.
You must file Form 2441 to claim the exclusion. Failure to file Form 2441 generally means Box 10 becomes taxable on your 1040.
Tax return implications
- Reduces Box 1 dollar-for-dollar up to $5,000 MFJ — a valuable tax break for working parents.
- Amounts used for qualified care reduce the Child and Dependent Care Credit (you cannot 'double-dip' with both the credit and the exclusion on the same dollar).
- If unused at year-end, the FSA rules apply — most plans are use-it-or-lose-it; some allow a grace period or a limited annual carryover (indexed by IRS Rev. Proc.).
Common pitfalls & things to check
- If your spouse did not have earned income, the exclusion is limited to the lower-earning spouse's earned income — excess becomes taxable.
- Dependent care FSA and the Child & Dependent Care Credit interact — running the Form 2441 math is required to get the exclusion.
Related W-2 boxes
Box 11 — Nonqualified plans
Distributions from a nonqualified deferred compensation plan (Section 409A), or certain amounts included in Box 1 from a prior year's elective deferral.
Box 1 — Wages, tips, other compensation
Your taxable federal wages for the year — gross pay minus pre-tax deductions like traditional 401(k), Section 125 cafeteria plan contributions, and pre-tax HSA.
Box 2 — Federal income tax withheld
Total federal income tax your employer withheld from your paychecks during the year, based on your Form W-4 elections.
Box 3 — Social security wages
Your wages subject to Social Security tax, capped at the annual wage base. Differs from Box 1 because traditional 401(k) deferrals are not excluded.
Reconciling your W-2 at tax time? Use the paycheck calculator to verify expected federal, Social Security, and Medicare withholdings on your salary, and the federal income tax calculator to estimate your refund or balance owing before you file.
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Sources
W-2 box definitions per IRS General Instructions for Forms W-2 and W-3 and IRC §6051. Rates and thresholds current for tax year 2025 (file by April 15, 2026); 2026 figures included where published.