Introduction
IRS Schedule A (Form 1040) reports itemized deductions. "2026 Schedule A" means the schedule for tax year 2026, filed in 2027. If you want the form for the return you file this year, you need the 2025 version.
Many filers struggle with whether itemizing beats the standard deduction, so most never touch Schedule A. Only about 9% of 2023 returns itemized, according to a CRS report. For those who do, the 2026 rules bring real changes: a new charitable floor, a gambling-loss restriction and a higher SALT cap.
This guide covers who should use Schedule A, how to work through each section, which limits to verify, and why it is not Schedule 1-A.
Key Takeaways
- Schedule A applies only when you itemize instead of taking the standard deduction.
- The 2026 form is still a draft, so confirm final line numbers before filing.
- Keep receipts and acknowledgements for every deduction you claim.
- Nonresidents and Australia-connected taxpayers may need Form 1040-NR instead.
What Is IRS 2026 Schedule A and Who Should Use It?
Schedule A calculates eligible itemized deductions: medical and dental expenses, taxes, interest, charitable gifts, casualty losses and other specified items. The total carries to Form 1040 or 1040-SR. On the 2026 draft, that is line 18 flowing to line 12e.
Treat the draft carefully. The IRS marks it "not for filing", and the 2026 final instructions are not yet listed. The latest final instructions on the IRS site are for 2025. Line numbers can shift before release.
Schedule A versus Schedule 1-A
Schedule A and Schedule 1-A serve different purposes. Schedule 1-A reports four additional deductions created by the One Big Beautiful Bill Act, available to itemizers and non-itemizers alike, for 2025 to 2028:
- Qualified tips: up to $25,000 per return
- Qualified overtime: $12,500, or $25,000 if filing jointly
- Passenger-vehicle loan interest: up to $10,000
- Additional senior deduction: $6,000 per eligible person aged 65 or older
All four phase out at higher incomes. Never move amounts between the two schedules.
Who may need special treatment
Form 1040-SR uses the same Schedule A. Resident aliens can claim the same itemized deductions as citizens.
Nonresident aliens use a separate Schedule A (Form 1040-NR), which lists state and local income taxes, gifts to US charities, qualifying casualty or theft losses and specified other deductions.
Itemizing generally requires income effectively connected with a US trade or business.
How to Complete IRS 2026 Schedule A: A Section-by-Section Guide
Start with your name and Social Security number, then work through the sections in order. Use the final form's line numbers once released.
Medical and dental
Deduct only unreimbursed expenses above 7.5% of AGI. Qualifying costs include:
- Diagnosis, treatment and prevention
- Insurance premiums
- Transport for care
Subtract anything an insurer or other party paid.
Taxes paid
Choose state and local income tax or general sales tax, not both. Add real estate and personal property taxes. The combined total faces the SALT cap.
Interest
Report qualifying home mortgage interest and points, usually from Form 1098. Investment interest goes through Form 4952, and the deductible amount generally enters line 9.
Gifts, losses and the total
Work through the remaining lines in order:
- Cash and noncash charitable gifts
- Casualty or theft losses (supported by Form 4684)
- Other deductions such as gambling losses
Add everything, apply any limitation worksheet, and carry the total to Form 1040.
2026 Schedule A Deduction Rules, Limits, and Documentation Requirements
Medical and dental expenses
The 7.5% AGI threshold applies. Expenses are generally those paid during the year, and insurer-paid amounts are excluded. Keep supporting records, but do not send them with a paper return.
Taxes paid and the SALT limitation
The 2026 SALT cap is $40,400 ($20,200 if married filing separately). Phase-down and floor rules:
- Cap shrinks once modified AGI exceeds $505,000 ($252,500 MFS)
- Reduction equals 30% of the excess
- Cap cannot fall below $10,000 ($5,000 MFS)
MAGI adds back certain foreign income exclusions under sections 911, 931 and 933. Figures come from the IRS 1040-ES correction.
Mortgage and investment interest
- Acquisition debt is generally capped at $750,000 ($375,000 MFS) for debt after 15 December 2017
- Older debt may keep the $1 million ceiling
- Home equity interest qualifies only if proceeds buy, build or substantially improve the home securing the loan
- Points are usually deducted over the loan term, with exceptions for main-home purchases
- Investment interest is limited to net investment income
Charitable contributions
From 2026, itemized gifts are deductible only above a 0.5% floor. Cash gifts generally face a 60% AGI ceiling, while noncash gifts face 50%, 30% or 20% limits. Excess generally carries forward five years.
Substantiation rules:
- Gifts of $250 or more need a written acknowledgement
- Noncash gifts over $500 need Form 8283
- Items over $5,000 generally need a qualified appraisal
Casualty, theft, gambling and other deductions
- Personal casualty losses generally require a federally declared or qualifying state-declared disaster, reported on Form 4684
- Ordinary losses face a $100 per-event reduction and a 10% of AGI reduction
- Gambling deductions are limited to the lesser of 90% of losses or winnings, per IRS Publication 505
Should You Itemize or Take the Standard Deduction in 2026?
Add your eligible Schedule A deductions and compare the total with the 2026 standard deduction:
| Filing status | Standard deduction |
|---|---|
| Single | $16,100 |
| Married filing separately | $16,100 |
| Married filing jointly | $32,200 |
| Head of household | $24,150 |
Take whichever is larger. Itemizing tends to win with large medical bills, a big mortgage, high state taxes or heavy giving. Married couples filing separately face a trap: if one spouse itemizes, the other cannot take the standard deduction.
Because Schedule 1-A deductions are open to non-itemizers, claiming the standard deduction does not rule them out.
State returns work differently. Some states require you to follow your federal choice and others do not, so check your state's rules.
Records, Filing Process, and Common Schedule A Mistakes
Documents to gather before completing the form
- Medical invoices and insurance reimbursement statements
- Property and state tax bills
- Form 1098 mortgage interest statements
- Investment interest records
- Charity receipts, acknowledgements and noncash valuations
- Disaster-loss documentation
- Gambling statements
Keep records for at least three years. The period is six years if you omit more than 25% of gross income.
Filing and transferring the final amount
Attach Schedule A to your Form 1040 or 1040-SR and carry the total to the matching line. Check that tax software or your preparer has not entered the same amount elsewhere on the return.
Common errors to avoid
- Deducting reimbursed expenses
- Claiming ineligible personal costs
- Using the wrong year's limits
- Ignoring AGI thresholds
- Claiming both income tax and sales tax
- Losing substantiation
- Confusing Schedule A with Schedule 1-A
Cross-border and nonresident considerations
Returns must be in US dollars. The IRS has no official exchange rate but generally accepts a posted rate applied consistently, based on the date each item is paid.
Key points for nonresidents and treaty positions:
- Nonresidents engaged in a US trade or business generally must file Form 1040-NR
- A treaty position that overrides the Internal Revenue Code generally requires Form 8833
- The US-Australia treaty (1982, with a 2001 protocol) preserves US taxation of citizens and residents, with exceptions
Check the IRS treaty documents before relying on any position.
When professional support may be appropriate
VJM Global provides US tax compliance and advisory support, including Form 1040 and 1040-NR preparation, for internationally connected taxpayers whose returns involve cross-border reporting or complex documentation. Professional help supplements the final IRS instructions and does not replace them.
Frequently Asked Questions
What is IRS Schedule A used for?
It calculates itemized deductions reported with an individual federal return. It is generally used instead of the standard deduction.
Who should file Schedule A for 2026?
Consider it when your eligible itemized deductions may exceed your standard deduction. Certain filing circumstances, such as a spouse itemizing separately, also make it relevant.
What deductions can be claimed on Schedule A?
Major categories are medical and dental expenses, taxes, interest, charitable gifts, casualty and theft losses, and other items such as gambling losses. Check the final instructions for limits.
Is Schedule A required if I take the standard deduction?
Generally no. Review special filing circumstances, such as a spouse who itemizes.
What is the difference between Schedule A and Schedule 1-A?
Schedule A reports itemized expenses. Schedule 1-A reports four separate deductions (tips, overtime, vehicle loan interest and a senior deduction) available to itemizers and non-itemizers.
Can a nonresident alien or Australian resident use Schedule A?
It depends on residency, US-source income, treaty position and the return type. Nonresidents use Schedule A (Form 1040-NR) and should follow the Form 1040-NR instructions rather than standard Form 1040 guidance.
