Introduction
Form 1040 is the main US federal individual income tax return. Income earned in 2026 is generally reported during the 2027 filing season, so the form you file next year is the one that matters, not last year's.
You may struggle with finding the right IRS form and instructions, understanding what changed for 2026, choosing a filing status and schedules, and handling US obligations from Australia.
The IRS posted draft 2026 forms on 17 September 2026, and final versions apply once released.
This guide covers Form 1040 and 1040-SR, 2026 amounts, deductions and credits, schedules, Australian filer issues, documents, deadlines and common mistakes. Dollar figures are in USD.
Key Takeaways
- Tax year 2026 is filed in 2027; always use the final IRS forms, not prior-year ones.
- The 2026 standard deduction is $16,100 single, $32,200 joint and $24,150 head of household.
- New Schedule 1-A items are deductions, not refundable credits.
- Australians with US citizenship, residency or income may need Forms 2555, 1116, 8938 and an FBAR.
- Eligibility depends on your facts; this guide is not personal tax advice.
What Is Form 1040 and Who Uses It?
What Form 1040 reports
Form 1040 is the annual return for individuals. It reports income, adjustments, deductions, taxable income, tax, payments, and the resulting refund or balance due.
Corporations, partnerships and trusts file separate returns. Business profit can still reach your personal return, for example through Schedule C for a sole proprietorship or Schedule E for rental and pass-through income.
Form 1040 versus Form 1040-SR
Form 1040-SR is optional for taxpayers aged 65 or older. It uses larger text and a standard deduction chart, but the same schedules and instructions, so the tax calculation does not change.
Draft 2026 forms exist, but as of 20 October 2026 the IRS forms page still linked the final 2025 forms. Check the IRS site for final 2026 versions before filing.
Filing status and dependants
Status is generally set by your marital status at year-end:
- Single: unmarried, divorced or legally separated
- Married filing jointly: a married couple filing together
- Married filing separately: a married taxpayer filing alone
- Head of household: generally unmarried, paying more than half of household costs, with a qualifying dependant
- Qualifying surviving spouse: spouse died in either of the two preceding years, with a qualifying dependant child
Confirm eligibility in the official instructions. Don't pick a status simply because it produces a better result.
What Changed for the 2026 Tax Year?
2026 tax brackets and standard deduction
These are upper taxable-income limits per Revenue Procedure 2025-32, not gross-income thresholds. Qualifying surviving spouses use the joint column.
| Rate | Single / MFS | Joint | Head of household |
|---|---|---|---|
| 10% | $12,400 | $24,800 | $17,700 |
| 12% | $50,400 | $100,800 | $67,450 |
| 22% | $105,700 | $211,400 | $105,700 |
| 24% | $201,775 | $403,550 | $201,750 |
| 32% | $256,225 | $512,450 | $256,200 |
| 35% | $640,600 | $768,700 | $640,600 |
| Standard deduction | $16,100 | $32,200 | $24,150 |
For married filing separately, the 35% bracket ends at $384,350. The 37% rate applies above the 35% limit.
Brackets are marginal. Moving into the 24% bracket taxes only the income above that threshold at 24%. Each age-65 or blindness condition adds $1,650, or $2,050 if unmarried.
New or changed deductions and credits
The One Big Beautiful Bill Act added several deductions on the new Schedule 1-A for 2025 to 2028. They reduce income and are not refundable.
- Qualified tips: up to $25,000; phase-out starts at $150,000 ($300,000 joint)
- Qualified overtime: up to $12,500 ($25,000 joint), covering only the legally required premium portion
- Car-loan interest: up to $10,000 on qualifying new personal-use vehicles with US final assembly
- Seniors: $6,000 per person aged 65 or over; phase-out starts at $75,000 ($150,000 joint)
Other 2026 items:
- Child tax credit: $2,200 per child under 17; refundable portion up to $1,700, claimed on Schedule 8812
- SALT cap: $40,400 ($20,200 separate), on Schedule A
- Charity: non-itemisers may deduct up to $1,000 ($2,000 joint); itemisers face a 0.5% of AGI floor
- Mortgage insurance: qualified premiums deductible as interest from 2026
- Dependent care: non-refundable, on Form 2441; expenses capped at $3,000 for one person, $6,000 for two or more
- Educator expenses: $350 above the line
The child tax credit and dependent care figures come from draft 2026 instructions, so confirm them against the final versions.
Reporting changes for self-employed people
Form 1099-K reporting applies above $20,000 and 200 transactions, though direct payment-card transactions have no minimum. For certain payments after 2025, the 1099-NEC/MISC threshold is $2,000.
Not receiving a 1099 doesn't make income tax-free. Keep invoices, bank statements and expense records, especially if your figures differ from what platforms report.
Other provisions to check
Ask whether each applies to you:
- AMT: the exemption is $90,100 single and $140,200 joint
- Long-term capital gains: the 0% rate runs to $49,450 single and $98,900 joint; 15% applies up to $545,500 single and $613,700 joint
- QBI deduction: now permanent, with a $400 minimum where qualifying QBI is at least $1,000
- Foreign tax credit: covered in the Australian section below
Draft versus final forms
Drafts are not filing-ready. The draft 2026 Form 1040 "Other information" section asks whether the taxpayer and spouse are US citizens, US nationals or aliens lawfully authorised to work in the US. Treat that question as a draft item until the IRS publishes the final form.
How to Complete Form 1040 and Select the Right Schedules
Start with taxpayer details and filing status
Enter these details first:
- Names and taxpayer identification numbers (must match Social Security records)
- Address and filing status
- Spouse and dependant details
- Bank details for direct deposit
The IRS lists name and SSN mismatches among common errors that delay processing. A wrong status or missing dependant can also affect credits.
Report every category of income
Line references below are from the draft 2026 form:
- Wages (W-2): lines 1a to 1z
- Interest and dividends: lines 2a/2b and 3a/3b; Schedule B where required
- Capital gains: line 7a, with Schedule D and Form 8949
- Business income: Schedule C
- Rental income: Schedule E
- Unemployment and other income: Schedule 1
- Digital assets: sales on Form 8949 and Schedule D; mining or staking on Schedule 1; business receipts on Schedule C
Report foreign income in this same section; related forms are covered below.
Calculate AGI and deductions
Total income minus adjustments equals adjusted gross income (AGI). From AGI, subtract either the standard deduction or itemised deductions on Schedule A. Review Schedules A, C and E against the final instructions for limits.
Claim credits and report additional taxes
A deduction reduces income; a credit reduces tax. Non-refundable credits are limited by your tax liability, while refundable credits can produce a refund even with no tax owed.
Education credits illustrate the difference on Form 8863: the American Opportunity credit (up to $2,500 per student) is 40% refundable, while the Lifetime Learning credit ($2,000 per return) is not.
Attach schedules and review
Schedule 1 covers extra income and adjustments, Schedule 2 covers additional taxes, and Schedule 3 covers additional credits and payments. Most people file only a few supporting schedules (A, B, C, D, E, SE or 8812), not all of them.
Before submitting, check:
- All income documents are included
- Schedules match the figures on the form
- Bank and payment details are correct
- Signatures or e-file authorisation are complete
Special Considerations for Australian Residents and International Filers
Do you have a US filing obligation?
US citizens and resident aliens abroad report worldwide income. Citizenship, a green card, passing the US residency tests, US-source income or business activity can each trigger a return. Net self-employment earnings of $400 trigger filing on their own.
US tax residency differs from Australian tax residency. Review the treaty and IRS tests with a qualified professional.
Report worldwide income and convert currency
Worldwide income can include Australian wages, business income, pensions, investments, rental income and exchange gains or losses.
- Report in USD, generally at the transaction-date rate
- The IRS has no single official rate but generally accepts consistently applied posted rates
- Keep records of the original AUD amount and the USD conversion
Foreign tax credit, exclusions and treaty positions
- Form 2555: $132,900 foreign earned income exclusion for 2026. You need a foreign tax home plus bona fide residence or 330 full days abroad in 12 consecutive months.
- Housing: base amount $21,264; ordinary cap $39,870; local caps of $65,600 for Sydney and $40,600 for Melbourne.
- Form 1116: credits Australian tax paid on income also taxed by the US. You get no credit for tax on excluded income, so don't claim the same benefit twice.
- Treaty: the saving clause generally preserves US taxation of citizens and residents. A blanket US exemption for superannuation has not been established.
The exclusion doesn't reduce self-employment tax, and an Australian tax benefit doesn't remove a US filing duty.
Foreign account and asset reporting
Form 8938 and the FBAR are separate filings with different thresholds.
| Form 8938 (abroad) | Year-end | Any time |
|---|---|---|
| Unmarried / MFS | $200,000 | $300,000 |
| Joint | $400,000 | $600,000 |
The FBAR applies when foreign accounts exceed $10,000 at any time. File it with FinCEN by 15 April (automatic extension to 15 October). Form 8938 attaches to your return.
Identification numbers and professional support
If you are ineligible for an SSN, use Form W-7 to apply for an ITIN. An ITIN expires after three consecutive years without a filed return. E-filing is generally unavailable with an ITIN during its assignment calendar year. Certified Acceptance Agents abroad can help with your application.
Non-US residents with US-source income generally file Form 1040-NR instead.
VJM Global offers cross-border tax compliance support through US-compliant professionals for Australian businesses and internationally connected taxpayers, including Form 1040 and 1040-NR preparation.
No firm can promise a specific filing outcome, so ask for a review of your facts first.
How to Prepare, File, and Avoid Common 1040 Mistakes
Build a 2026 document checklist
Gather what applies to you:
- W-2s, 1099s and brokerage statements
- Business and rental records
- Charitable, childcare, education and mortgage records
- Foreign income documents and foreign account balances
- Foreign tax payment evidence and currency conversion records
- Your prior-year return
Reconcile everything against bank statements. Records generally need to be kept for 3 years, or 6 years for specified substantial omissions.
Confirm deadlines, extensions and payments
Dates below come from the IRS's draft Publication 509, so confirm them against the final calendar.
| Obligation | Date |
|---|---|
| 2026 return | 15 April 2027 |
| Qualifying taxpayers abroad | 15 June 2027 |
| Extended filing | 15 October 2027 (Form 4868) |
An extension gives more time to file, not to pay. Interest still runs from the April due date, even if you qualify for the June abroad extension.
Penalty rates:
- Failure to file: 5% a month, up to 25%
- Failure to pay: 0.5% a month, up to 25%
Safe harbour for estimates: pay 90% of current-year tax or 100% of prior-year tax (110% if prior AGI exceeds $150,000).
Avoid preventable errors
- Missing forms or omitted foreign income
- Transposed identification numbers
- Wrong filing status
- Duplicated deductions
- Wrong bank details
- Unsigned returns or missing e-file authorisation (Form 8879)
Use official IRS sources and secure document exchange. An IP PIN is a six-digit number issued annually, and it is separate from your signature PIN. For complex international returns, have a qualified preparer review the file before you submit.
Frequently Asked Questions
What is the 1040 standard deduction for 2026?
It is $16,100 for single and married filing separately, $32,200 for joint filers and $24,150 for head of household. Extra amounts apply for age 65 or blindness; verify against the latest IRS instructions.
What are the new tax changes for 2026?
Enacted changes include new deductions for tips, overtime, car-loan interest and seniors, a higher SALT cap, and a larger child tax credit. Draft form questions remain unconfirmed until the IRS finalises them.
When will I file my 2026 Form 1040?
2026 income is reported in 2027. The draft calendar lists 15 April, with 15 June for qualifying taxpayers abroad and 15 October if extended. Confirm with the final IRS calendar.
Which schedules do I attach to Form 1040?
It depends on your circumstances. Schedule C covers business, D gains, E rentals, SE self-employment tax, A itemised deductions and 8812 child credits. Check the final instructions.
Can Australian residents with US income use Form 1040?
Some can, particularly US citizens, green card holders or those meeting the residency tests. Foreign tax credits, treaty rules and forms such as 2555, 1116 and 8938 may also apply.
What is the difference between Form 1040 and Form 1040-SR?
Form 1040-SR is an optional version for people aged 65 or older, with larger print. The schedules and tax rules are the same; the final 2026 forms govern eligibility.
