What Is Schedule 1-A? 2025 Additional Deductions

Schedule 1-A, Additional Deductions, is a federal schedule first used with 2025 individual income tax returns to calculate four deductions: qualified tips, qualified overtime compensation, qualifying passenger-vehicle loan interest, and an additional deduction for eligible taxpayers age 65 or older. The total from the schedule flows to Form 1040, Form 1040-SR, or Form 1040-NR.

Schedule 1-A does not replace Schedule 1 or Schedule A. It is a separate form for these four deductions. Eligible taxpayers can generally claim a Schedule 1-A deduction whether they use the standard deduction or itemize deductions.

What deductions appear on Schedule 1-A?

The 2025 schedule contains five parts:

Each deduction has its own definition, limit, documentation requirements, income phaseout, and — in some cases — filing-status or identification requirements. Eligibility for one does not automatically establish eligibility for another.

How Schedule 1-A works

The form begins with an adjusted MAGI calculation, which is used for phaseout limits. It then calculates each applicable deduction and applies any reduction required at the taxpayer's income level.

For 2025, the headline maximums include:

• Up to $25,000 of qualified tips, subject to the applicable rules and limits
• Up to $12,500 of qualified overtime compensation, or $25,000 on a qualifying joint return
• Up to $10,000 of qualified passenger-vehicle loan interest
• Up to $6,000 for each eligible taxpayer age 65 or older

These are maximum deductions, not guaranteed amounts. The deductible tip or overtime amount is not necessarily the full amount shown on a pay statement. The car-loan deduction does not apply to every vehicle or every loan. The senior deduction phases down based on income.

Schedule 1-A example

Assume an eligible single employee has $4,000 of qualified tip income, $2,000 of qualified overtime compensation, and no car-loan or senior deduction. Assume the taxpayer's MAGI does not reduce either deduction.

The simplified Schedule 1-A total would be:

$4,000 qualified tips + $2,000 qualified overtime = $6,000 additional deductions

If the taxpayer had $60,000 of income before this deduction, the $6,000 could reduce taxable income. It would not produce a $6,000 tax credit. The actual tax savings would depend on the taxpayer's tax bracket and other return items.

"No tax" does not mean the income disappears

Qualified amounts remain wages or income where the tax rules require them to be reported. The Schedule 1-A deduction reduces federal taxable income; it does not automatically remove wages from Form W-2, eliminate Social Security or Medicare tax, or create a dollar-for-dollar credit.

For overtime, the deductible amount generally focuses on qualified overtime compensation required under federal labor law — not every dollar paid during overtime hours. For tips, the occupation, reporting, business-income limit for self-employed taxpayers, and other statutory conditions can matter.

Schedule 1-A vs. Schedule 1 and Schedule A

Schedule 1 reports additional income and adjustments to income, including business income from Schedule C and rental or pass-through income from Schedule E.

Schedule A reports itemized deductions such as qualifying medical expenses, taxes, interest, gifts to charity, and certain losses.

Schedule 1-A reports only the four additional deductions described above. A taxpayer may use Schedule 1-A while taking either the standard deduction or itemized deductions.

Where Schedule 1-A appears on the return

On the 2025 Form 1040, total additional deductions from Schedule 1-A, line 38, are reported in the deductions section. The exact line and instructions must be checked for the tax year being filed.

The schedule may rely on Forms W-2 or other statements for tip or overtime information, loan records for vehicle interest, proof of age, filing status, and Social Security numbers. Transitional 2025 reporting rules can require taxpayers to use employer or payroll records rather than expect every needed figure to appear in one specially labeled box.

Federal and California treatment

Schedule 1-A is federal. California generally conforms to the Internal Revenue Code only through a specified date and does not automatically adopt later federal changes. The California Franchise Tax Board states that California does not conform to the new federal deductions for tips, overtime, passenger-vehicle loan interest, or the enhanced senior deduction.

A California taxpayer may therefore receive a federal deduction without receiving the same California deduction. Schedule CA (540) or Schedule CA (540NR) may be needed to reconcile the federal and state treatment. Do not subtract the federal Schedule 1-A total from California income without applying the current California instructions.

Common mistakes

• Confusing Schedule 1-A with Schedule 1 or Schedule A
• Treating the deduction as a tax credit
• Assuming all tips or overtime pay qualifies
• Deducting total overtime wages instead of the qualifying component
• Claiming interest on an ineligible vehicle, loan, or use
• Missing MAGI phaseouts or joint-return requirements
• Assuming California follows the federal deduction
• Failing to retain payroll, tip, loan, age, or vehicle records

Frequently asked questions

Related terms

• Form 1040
• Tax Deduction
• Modified Adjusted Gross Income (MAGI)
• Form W-2
• Adjusted Gross Income

Official sources

• IRS — Schedule 1-A, Additional Deductions: what to know
• IRS — 2025 Schedule 1-A, Additional Deductions
• IRS — 2025 Instructions for Form 1040 and Schedule 1-A
• California FTB — Summary of federal income tax changes

The definitions and examples on this page are for informational purposes only and do not constitute tax advice. Tax laws change frequently and individual circumstances vary. Consult a qualified tax professional before making decisions based on this content.