✦ New for 2025–2026OBBBA DeductionsForm 1040, Line 13b
The Comprehensive Guide to IRS Schedule 1-A & OBBBA Deductions
Updated May 2026·Attached to Form 1040·W-2, 1099, LLC, self-employed·Educational only
Estimate new Schedule 1-A deductions for tips, overtime, car loan interest, and seniors using TaxSaveIQ's free educational calculator. Schedule 1-A is a new IRS form that consolidates four new deductions enacted under OBBBA — they flow to Form 1040, Line 13b and may reduce taxable income whether or not you itemize. Verify exact treatment with IRS instructions or a qualified tax professional.
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Key fact: Schedule 1-A additional deductions are calculated separately from Schedule 1 adjustments and flow to Form 1040 line 13b. They may reduce taxable income and can be claimed whether a taxpayer itemizes or uses the standard deduction. Verify exact treatment with IRS instructions or a qualified tax professional.
What is IRS Schedule 1-A?
According to IRS guidance, Schedule 1-A is used to calculate and claim new additional deductions created under the One Big Beautiful Bill Act (OBBBA). Taxpayers attach Schedule 1-A to Form 1040, 1040-SR, or 1040-NR when filing a 2025 or 2026 tax return.
The total additional deductions calculated on Schedule 1-A flow to Form 1040, Line 13b— labeled “Additional deductions from Schedule 1-A.” Schedule 1-A additional deductions flow to Form 1040 line 13b and may reduce taxable income. They are separate from Schedule 1 adjustments and can be claimed whether the taxpayer takes the standard deduction or itemizes. Verify exact treatment with IRS instructions or a qualified tax professional.
These deductions can be claimed whether the taxpayer uses the standard deduction or itemizes — they are not affected by the choice between Schedule A itemized deductions and the standard deduction.
Form 1040 flow (simplified): Gross Income → Schedule 1-A deductions (Line 13b) → Standard or Itemized Deduction → Taxable Income → federal tax brackets. Exact AGI treatment: verify with IRS instructions or a qualified tax professional.
The four Schedule 1-A deduction categories
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No Tax on Qualifying Tips
Schedule 1-A · Lines 1a–1b · IRC § 62(a)(21)
Workers in eligible tip industries — food service, hospitality, beauty, personal care, and delivery — can deduct qualifying tip income they received and reported on their wages. Both cash and charged tips count if properly tracked and documented.
Annual cap: $25,000. Tips must be reported on W-2 Box 7 or Schedule C. Maintain a daily tip diary for cash tips. Occupation must qualify as tip-eligible under IRS guidance. Income phaseouts may apply.
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No Tax on Overtime Pay
Schedule 1-A · Lines 2a–2b · IRC § 62(a)(22)
The premium portion of overtime pay — the extra 0.5× above the regular hourly rate for hours over 40 per week under FLSA — is deductible. Only the premium (the “half” in “time-and-a-half”) qualifies, not the entire overtime wage.
Cap: $12,500 single / $25,000 MFJ. Bonuses and shift differentials do not qualify. Employer must separately identify OT premium on W-2 or provide a qualifying payroll statement.
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Car Loan Interest Deduction
Schedule 1-A · Lines 3a–3b · IRC § 62(a)(23)
Interest paid on a loan for a new passenger vehicle that was final-assembled in the United States is now deductible above the line — similar in structure to the existing student loan interest deduction. Applies to personal-use vehicles only.
Cap: $10,000 per year. Vehicle must be US-assembled (verify via NHTSA VIN decoder). Loan generally must have originated after Dec. 31, 2024, and must meet IRS qualified passenger vehicle loan requirements. Verify vehicle, loan, VIN, personal-use, and reporting requirements with IRS instructions. MSRP limits apply.
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Enhanced Senior Deduction
Schedule 1-A · Lines 4a–4b · IRC § 62(a)(24)
Taxpayers who are 65 or older on December 31 of the tax year may receive an additional Schedule 1-A deduction flowing to Form 1040 Line 13b, separate from both the standard deduction and the existing over-65 standard deduction add-on. Verify eligibility with IRS instructions.
$6,000 single / $12,000 MFJ. MAGI phase-out begins at $75,000 (single) or $150,000 (MFJ). Deduction reduces by 5% for each $1,000 of MAGI over the threshold. Verify exact limits with IRS instructions.
Schedule 1-A deduction estimator — free, no login required
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Schedule 1-A Deduction Estimator
Simplified educational estimate · No login required · Not tax advice
Filing Details
Tax Year
Schedule 1-A applies to tax years 2025 and 2026
Filing Status
Estimated MAGI / AGI (before Schedule 1-A)
Used to calculate the senior deduction phase-out. Leave 0 if not applicable.
Schedule 1-A Deduction Amounts
💚 Qualified Tips Received
Cap: $25,000 · Tip-eligible occupations only
⏰ Overtime Premium Pay
Cap: $12,500 (single/HoH) · FLSA premium portion only
🚗 Car Loan Interest Paid
Cap: $10,000 · US-assembled vehicle, loan after Dec 31 2025
🎖️ Senior Deduction (Age 65+)
$6,000/qualifying senior · Phases out at $75k MAGI
Your Approximate Marginal Federal Rate
Used to estimate federal income tax impact. For a more accurate marginal rate, use the full federal calculator.
Schedule 1-A · Estimated Deductions
💚 Tips deduction (Line 1b)$0
⏰ Overtime deduction (Line 2b)$0
🚗 Car loan interest (Line 3b)$0
🎖️ Senior deduction (Line 4b)$0
Line 5 → Form 1040 Line 13b
Total Schedule 1-A additional deductions
$0
Simplified educational estimate. This calculator approximates Schedule 1-A deductions using published caps and phaseout parameters. MAGI phaseouts for tips and overtime are pending final IRS instructions. Senior deduction phaseout uses illustrative parameters — verify with IRS Schedule 1-A instructions or a qualified tax professional. Does not save data or connect to any account.
Free · No account required · Includes all OBBBA deductions
Example walkthrough — real numbers
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Maria — server & rideshare driver, single, age 34
Tax year 2026 · Gross income $74,000
1
Calculate qualifying tip income (Line 1b)
Maria earned $18,400 in tips at a restaurant — a qualifying tip-eligible occupation. All tips were reported on her W-2 Box 7. The $25,000 cap is not exceeded.
Tips received: $18,400
Cap: $25,000
Line 1b deduction: $18,400
2
Identify overtime premium pay (Line 2b)
Her pay stubs show $3,200 in FLSA overtime premium — the extra 0.5× portion for hours over 40/week. Her employer confirmed this is separately identified as required.
OT premium received: $3,200
Cap (single): $12,500
Line 2b deduction: $3,200
3
Auto loan interest from Form 1098-C (Line 3b)
Maria financed a US-assembled Honda Civic in March 2026. Her lender's 1098-C shows $2,750 in interest paid during the year. MSRP was within the qualifying limit.
Interest paid: $2,750
Cap: $10,000
Line 3b deduction: $2,750
4
Senior deduction — not applicable (Line 4b)
Maria is 34 years old and does not qualify for the enhanced senior deduction.
Age as of Dec 31, 2026: 34 — does not meet 65+ threshold
Line 4b deduction: $0
5
Total Schedule 1-A → Form 1040 Line 13b → taxable income
The three deductions are added on Line 5 and carried to Form 1040 Line 13b, which may reduce taxable income before the standard deduction is applied. Verify with IRS instructions.
Schedule 1-A Line 5: $18,400 + $3,200 + $2,750 = $24,350
Gross income: $74,000
Less Line 13b: −$24,350
AGI: $49,650
Standard deduction: −$16,100 (est. 2026)
Taxable income: $33,550Without Schedule 1-A: taxable income would be ~$57,900
Estimated tax savings: ~$3,400–$5,600(22–24% bracket)
How Schedule 1-A Flows into Form 1040
Schedule 1-A additional deductions flow to Form 1040 line 13b and may reduce taxable income. They are separate from Schedule 1 adjustments and can be claimed whether the taxpayer uses the standard deduction or itemizes. Verify exact treatment with IRS instructions or a qualified tax professional.
It is important not to mix Schedule 1-A deductions with Schedule 1 adjustments unless IRS instructions specifically direct you to do so. Schedule 1 handles other above-the-line adjustments (student loan interest, HSA deductions, alimony) and is a separate form from Schedule 1-A.
Form 1040 sequence (simplified):
Report total income on Form 1040
Subtract Schedule 1 adjustments (Line 10)
Subtract Schedule 1-A total (Line 13b) ← new
Subtract Standard or Itemized Deduction
= Taxable Income → apply federal tax brackets
Exact treatment of Line 13b: verify with IRS instructions or a qualified tax professional
Deduction Limits & Phase-Outs
Each Schedule 1-A deduction has its own annual cap. Income phase-outs may reduce or eliminate the deduction at higher MAGI levels. The following limits reflect current understanding of the OBBBA rules — verify with IRS instructions or a qualified tax professional as final guidance may be updated:
Deduction
Annual Cap
MFJ Cap
Phase-Out Start
Qualified Tips
$25,000
$25,000
Pending IRS guidance
Overtime Premium
$12,500
$25,000
Pending IRS guidance
Car Loan Interest
$10,000
$10,000
Pending IRS guidance
Senior Deduction
$6,000
$12,000
$75k single / $150k MFJ
Common Mistakes to Avoid
Treating Schedule 1-A deductions as Schedule 1 AGI adjustments — they are on a separate line (13b)
Entering total overtime wages instead of just the overtime premium portion (the extra 0.5×)
Assuming all tips qualify — occupation must be listed as tip-eligible in IRS guidance
Assuming car loan interest qualifies without verifying US assembly and post-2024 loan origination date
Forgetting MAGI phase-outs for the senior deduction — high earners may receive a reduced amount
Expecting state income tax to automatically follow federal Schedule 1-A rules — most states have not conformed
Claiming married-related deductions without filing jointly where the higher cap requires it
Counting tips not reported to the employer or IRS — only properly reported tips qualify
Frequently asked questions
❓What is IRS Schedule 1-A?
IRS Schedule 1-A is a new tax form used to calculate and claim four additional deductions created under OBBBA: qualified tip income, qualified overtime pay, qualified car loan interest, and the enhanced senior deduction. The total flows to Form 1040 Line 13b. These deductions may reduce taxable income and can be claimed whether a taxpayer itemizes or uses the standard deduction. Verify exact treatment with IRS instructions or a qualified tax professional.
❓Who needs to file Schedule 1-A?
Any taxpayer who received qualifying tip income, overtime premium pay, paid interest on a qualifying US-assembled car loan, or is age 65 or older as of December 31 of the tax year. The schedule is attached to Form 1040, 1040-SR, or 1040-NR.
❓Is Schedule 1-A the same as Schedule 1?
No. Schedule 1 captures additional income sources and above-the-line adjustments such as student loan interest, HSA deductions, and alimony. Schedule 1-A is a separate new form exclusively for the four OBBBA deductions. They are distinct forms that flow to different lines on Form 1040.
❓Does Schedule 1-A reduce AGI?
Schedule 1-A additional deductions are calculated separately from Schedule 1 adjustments and flow to Form 1040 line 13b. They may reduce taxable income and can be claimed whether a taxpayer itemizes or uses the standard deduction. Verify exact treatment with IRS instructions or a qualified tax professional.
❓Can I use Schedule 1-A if I take the standard deduction?
Yes. Schedule 1-A deductions are completely separate from the choice between standard and itemized deductions. You can claim all four Schedule 1-A deductions and still take the full standard deduction. They stack on top of whichever deduction method you choose.
❓What is the maximum no-tax-on-tips deduction?
According to IRS guidance, qualifying tip income may be deductible up to $25,000 per return. The cap is the same for single and married filers. Only tips received in qualifying tip-eligible occupations (food service, hospitality, beauty, personal care, delivery) count. Tips must be reported on W-2 Box 7 or Schedule C. Income phaseouts may apply — verify with IRS instructions or a qualified tax professional.
❓What is the maximum no-tax-on-overtime deduction?
The overtime deduction cap is $12,500 for single filers and $25,000 for married filing jointly. Only the FLSA overtime premium (the extra 0.5× multiplier for hours over 40 per week) qualifies — not the entire overtime wage. Example: If your regular rate is $20/hr and you earn $30/hr overtime, only the extra $10/hr × overtime hours counts as the premium. Bonuses, shift differentials, and non-FLSA overtime generally do not qualify.
❓Does car loan interest qualify for Schedule 1-A?
Interest paid on a new passenger vehicle loan may qualify if: (1) the vehicle was final-assembled in the United States, (2) the loan generally originated after December 31, 2024, and meets IRS qualified passenger vehicle loan requirements, and (3) vehicle MSRP limits are met. The deduction is capped at $10,000 per year. Income phaseouts may apply. The lender should provide a Form 1098-C or equivalent interest statement. Verify vehicle, loan, VIN, personal-use, and reporting requirements with IRS instructions or a qualified tax professional.
❓How does the enhanced senior deduction phase-out work?
The deduction phase-out begins at $75,000 MAGI (single) or $150,000 MAGI (MFJ), reducing by 5% for each $1,000 of MAGI over the threshold. Example: A single filer with $80,000 MAGI exceeds the threshold by $5,000 (5 units of $1,000), so the phase-out is 25% (5 × 5%). The $6,000 deduction is reduced by 25% to $4,500. The deduction reaches zero at approximately $195,000 MAGI (single) / $390,000 (MFJ). Verify exact phase-out amounts with IRS instructions.
❓Does TaxSaveIQ file my tax return?
No. TaxSaveIQ provides educational tax estimates and planning tools only. TaxSaveIQ does not file tax returns, provide tax advice, or represent users before the IRS or any tax authority. Always consult a qualified, licensed tax professional for advice and filing specific to your situation.
Estimate your Schedule 1-A deductions free
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Educational Disclaimer: TaxSaveIQ provides educational estimates only and does not provide tax, legal, accounting, investment, or financial advice. Schedule 1-A eligibility depends on IRS rules, income thresholds, filing status, documentation requirements, and your complete tax return. This page summarizes Schedule 1-A as understood based on enacted legislation — deduction caps, phase-out thresholds, eligibility rules, and form numbering may be adjusted by subsequent IRS guidance, technical corrections, or regulatory updates. The calculator on this page is a simplified estimator and does not constitute tax preparation. TaxSaveIQ is not affiliated with the Internal Revenue Service or any government agency. Verify all figures with a qualified, licensed tax professional before filing. Full disclaimer.