This guide covers tax year 2026, generally filed in 2027. The IRS 2026 Schedule A is still marked "DRAFT - DO NOT FILE" in the research record, so confirm final forms, instructions, thresholds and line numbers on IRS.gov before you file.
We'll cover who should use Schedule A, what each category allows, how Australian expenses are treated, which records to keep, and how to avoid double claims.
Key Takeaways
- Itemise only when allowable deductions beat your standard deduction, apart from special filing situations.
- Map expenses to medical, taxes, interest, charity, casualty and theft, or limited other items.
- Each category has its own floors, caps and proof requirements.
- Australian taxes, mortgages and gifts need US-rule classification, and currency conversion needs documentation.
What Is Schedule A and Who Should Use It?
Schedule A (Form 1040) reports itemised deductions. In the 2026 draft, the total sits on Schedule A line 18 and flows to Form 1040 line 12e. Verify that reference on the final form.
Don't confuse it with other items:
- Schedule 1 adjustments reduce adjusted gross income and flow to Form 1040 line 10.
- Schedule 1-A deductions are additional deductions that flow to line 13a in the draft.
- Credits are reported later in the return, not as deductions.
- Business and rental costs belong on Schedules C, E or F.
Who Should Compare Itemising With the Standard Deduction?
Run both calculations if you have large mortgage interest, state and local taxes, medical costs, charitable gifts or casualty losses. The IRS 2026 adjustments set these standard deductions:
| Filing status | 2026 standard deduction |
|---|---|
| Married filing jointly | $32,200 |
| Single | $16,100 |
| Married filing separately | $16,100 |
| Head of household | $24,150 |
Special cases differ:
- A married-filing-separately taxpayer cannot take the standard deduction if the spouse itemises
- Dependants have their own limited standard deduction
- Form 1040-NR filers use Schedule A (Form 1040-NR); nonresident aliens generally cannot use the standard deduction at all
A new deduction for certain cash gifts by non-itemisers (up to $1,000, or $2,000 jointly) is not a Schedule A item. Check the final form for where it is reported.
Cross-Border Considerations for US Taxpayers in Australia
Living in Australia does not make Australian personal expenses deductible. Classify each cost under US rules first: personal, business, investment or foreign tax.
- Australian income tax can be taken as a credit (Form 1116) or a Schedule A deduction, not both for the same tax.
- Personal foreign property taxes are generally not deductible on Schedule A.
- Gifts to Australian charities are generally not deductible, and the IRS examples of treaty exceptions do not list Australia.
- Costs tied to excluded foreign earned income cannot also be deducted or credited.
2026 Schedule A Form 1040: Line-by-Line Instructions
The order below follows the 2026 draft. Line numbers can shift in the final version, so check IRS.gov.
Medical and Dental Expenses
Only unreimbursed expenses above 7.5% of AGI count. Remove insurance payments, reimbursements, employer-plan benefits and tax-free HSA payments before you calculate.
For Australian care, convert currency and confirm the cost is genuine medical care rather than general living cost. Prescribed drugs bought abroad must be legal in both the foreign country and the US. The IRS does not give blanket eligibility for foreign providers.
Qualified long-term-care premiums are capped by age under Rev. Proc. 2025-32, for 2026:
- 40 or under: $500
- 41-50: $930
- 51-60: $1,860
- 61-70: $4,960
- Over 70: $6,200
Taxes You Paid and the SALT Limitation
Choose state and local income taxes or general sales taxes, never both. Add real estate taxes and value-based personal property taxes charged annually.
The 2026 draft cap is $40,400 ($20,200 if married filing separately). It phases down by 30% of modified AGI over $505,000 ($252,500 MFS), but not below $10,000 ($5,000 MFS), per the CRS summary.
Australian and other foreign income taxes follow different rules. You may deduct foreign income tax only if you skip the foreign tax credit, and the credit is often the better route. Taxes tied to business, rental or excluded income may belong elsewhere.
Interest You Paid
Qualified home mortgage interest and points go on line 8. The draft Publication 936 sets the general acquisition-debt limit at $750,000 ($375,000 MFS) for debt after 15 December 2017. Keep Form 1098 records.
Investment interest goes on line 9 and may require Form 4952.
For an Australian mortgage:
- Confirm the home and loan meet qualified-residence and secured-debt rules
- Convert currency and separate personal from investment use
- Never deduct interest already claimed against business or rental income
- Do not deduct interest allocable to excluded income
Gifts to Charity
For 2026, itemisers face a 0.5% contribution-base floor. A 60% limit applies to qualifying cash gifts to certain organisations. General excess contributions carry forward five years.
Substantiation matters:
- Gifts of $250 or more need a written acknowledgement.
- Noncash gifts over $500 need Form 8283.
- Qualifying vehicle gifts over $500 generally involve Form 1098-C or the prescribed statement.
- Publication 561 covers valuing donated property.
Australian and other foreign charities need extra care, since foreign gifts are generally nondeductible.
Casualty Losses, Other Deductions, and the Schedule A Total
Casualty and theft losses on line 16 relate to federally or state-declared disasters and use Form 4684.
Gambling losses are limited to 90% of losses and cannot exceed gambling gains for tax years beginning after 2025. Other deductions must fit a listed category, such as impairment-related work expenses.
Add the categories to reach the line 18 total, then compare it with your standard deduction.
Hypothetical example (illustrative only): A single filer has $9,000 of allowable taxes, $6,500 of mortgage interest and $2,000 of charitable gifts, totalling $17,500. That exceeds the $16,100 standard deduction, so itemising wins. Cut the total to $14,000 and the standard deduction is better.
How to Prepare, Compare, Document and File Schedule A
Before You Start: Documents and Information to Gather
Collect:
- Mortgage statements and Form 1098
- Property-tax records
- Medical receipts and insurance reimbursements
- Charity acknowledgements and appraisals
- Investment-interest records
- Disaster-loss records
- Foreign tax statements
- Evidence for AUD-to-USD conversions
Separate personal, business, rental, investment and foreign-tax records first. Complete supporting forms such as Forms 4684, 4952, 8283 and 1116 before entering Schedule A amounts.
Calculation and Comparison Workflow
- Classify each cost by Schedule A category (medical, taxes, interest, charity, casualty, other).
- Remove reimbursements and nondeductible portions from each total.
- Apply each category's thresholds and caps (such as the medical AGI floor).
- Complete supporting forms (4684, 4952, 8283, 1116) where required.
- Total Schedule A and carry the result to Form 1040.
- Compare with the 2026 standard deduction and use the higher amount.
Foreign-Currency Expenses and Australian Records
There is no official IRS exchange rate. Use a posted rate consistently and document it. A single transaction generally uses the transaction-date rate, while income received through the year may use the IRS yearly average.
Keep original statements from Australian banks, lenders, charities and insurers, plus translations and rate evidence. The general assessment period is three years, longer in some cases, so retain records accordingly.
Getting and Filing the Form
Get the final 2026 Schedule A and instructions from IRS.gov, confirm the printed tax year, and attach it to Form 1040 or the correct 1040-NR schedule. The calendar-year deadline is 15 April 2027. Eligible taxpayers abroad may file by 15 June 2027, though interest still runs on unpaid tax from April.
VJM Global can help review or prepare US individual returns and cross-border deduction documentation for taxpayers with international records.
Common Schedule A Mistakes and Planning Considerations
Frequent Errors
- Using 2025 figures or draft 2026 line numbers
- Exceeding category limits
- Claiming reimbursed medical costs
- Treating every Australian tax payment as deductible
- Double-counting amounts on Schedule A and Schedules C, E or F
- Claiming both a foreign tax credit and deduction for the same tax
- Using undocumented currency conversions
- Deducting donations without substantiation
Year-End Planning
- Track eligible costs all year and keep receipts and acknowledgements
- Review whether timing or bunching charitable gifts changes the itemising decision
- Compare the standard deduction and itemised total before filing
Conclusion: Making the 2026 Schedule A Decision
Use the final IRS form, classify every expense, apply current limits, keep your records, and compare the total with the standard deduction.
VJM Global supports Form 1040 and 1040-NR preparation and cross-border tax review, including foreign tax credit claims. If you are juggling US and Australian tax rules, currency conversion or property records, get in touch at [email protected].
Frequently Asked Questions
Who should use Schedule A for 2026?
Use it when allowable itemised deductions exceed your standard deduction, or when a filing-status rule requires itemising. Confirm against final IRS rules.
What deductions can I claim on Schedule A (Form 1040)?
Medical and dental expenses, taxes, interest, charitable gifts, casualty and theft losses, and limited other deductions. Each has its own eligibility and documentation rules.
How do I know whether to itemise or take the standard deduction?
Calculate allowable deductions after floors, caps, exclusions and reimbursements. Then compare the total with the official 2026 standard deduction for your filing status.
Can I claim Australian taxes or expenses on Schedule A?
Not automatically. Classify income taxes, property taxes, mortgage interest and gifts under US rules, and coordinate with the foreign tax credit and business or rental reporting.
What is the difference between Schedule A and Schedule 1?
Schedule A totals itemised deductions that reduce taxable income. Schedule 1 reports additional income and adjustments that affect adjusted gross income.
Where can I find the 2026 Schedule A form and instructions?
On IRS.gov, under the final forms and instructions pages. Confirm the printed tax year on the form you download, and avoid prior-year or draft versions.
