What are common tax mistakes for non-resident aliens?

Asked by: Shanelle Wiza  |  Last update: June 11, 2026
Score: 4.4/5 (8 votes)

Common tax mistakes for non-resident aliens often involve misclassifying residency status (using Form 1040 instead of 1040-NR), failing to file Form 8843, and not utilizing tax treaty benefits. Other errors include ignoring U.S.-source income, incorrectly claiming deductions, or missing filing deadlines, which can lead to audits or penalties.

What are common tax mistakes for non-resident aliens?

Filing as a 'resident' instead of a 'nonresident tax alien' This is easily one of the most common tax errors. Every year thousands of nonresident aliens mistakenly file resident tax documents. In short, a resident should file a Form 1040 and a nonresident should file with a Form 1040NR.

What is the 90% rule for non-residents?

What is the 90% Rule? In a nutshell, the 90% rule is simple: if 90% or more of your worldwide income is from Canadian sources in the tax year, you're eligible for non-refundable tax credits reserved for residents.

What raises red flags for the IRS?

The IRS uses a combination of automated and human processes to select which tax returns to audit. Not reporting all of your income is an easy-to-avoid red flag that can lead to an audit. Taking excessive business tax deductions and mixing business and personal expenses can lead to an audit.

How are non-resident aliens taxed in the US?

Tax treatment of nonresident alien

If you are a nonresident alien engaged in a trade or business in the United States, you must pay U.S. tax on the amount of your effectively connected income, after allowable deductions, at the same rates that apply to U.S. citizens and residents.

Nonresident Alien vs U.S. Resident Tax Rules Explained (Key Differences You Must Know)

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What are the tax rules for non-resident?

Non-resident Indians (NRIs) are taxed on income earned or collected in India. This could be from sources like property rent, share dividends, and investment and savings capital gains, if over a specified limit. Income earned outside India is not taxable in India.

What is the 5 year non-resident rule?

Who is considered a temporary non-resident? Individuals that leave the UK for fewer than 5 years (periods of 12 months, not tax years), and prior to leaving have lived in the UK for at least 4 out of 7 of the most recent years, can be treated as being a 'temporary non-resident' upon returning to the UK.

What gets audited the most by the IRS?

Businesses that show losses are more likely to be audited, especially if the losses are recurring. The IRS might suspect that you must be making more money than you're reporting. Otherwise, why would you stay in business? Most likely to be audited are taxpayers reporting small business losses.

Do non-residents have to pay taxes?

As a foreign resident, you must lodge a tax return in Australia. You must pay tax on all Australian-sourced income, except for income that has already been correctly taxed (such as interest, unfranked dividends and royalties).

Do non-residents have to file a tax return?

If you are living and working or studying in the U.S. as a nonresident alien, you may be required to file a federal tax return. If you are a nonresident alien, the Internal Revenue Service (IRS) may still consider you as a resident alien for tax filing purposes.

Do non-residents get the basic personal amount?

As a non-resident of Canada, you are not entitled to claim a personal exemption amount (known as the “basic personal amount”) for federal or provincial income tax purposes unless your Canadian employment income represents 90% of your worldwide income.

What are the most common tax mistakes?

Avoid These Common Tax Mistakes

  • Not Claiming All of Your Credits and Deductions. ...
  • Not Being Aware of Tax Considerations for the Military. ...
  • Not Keeping Up with Your Paperwork. ...
  • Not Double Checking Your Forms for Errors. ...
  • Not Adhering to Filing Deadlines or Not Filing at All. ...
  • Not Fixing Past Mistakes. ...
  • Not Planning for Next Year.

Can immigration look at your taxes?

If you are an immigrant, most immigration applications will require the production of tax records at some point in the process. False or inaccurate information on your tax returns can have a negative impact on your immigration status, which may result in delays or even a denial of an immigration petition.

What throws red flags to the IRS?

Unreimbursed employee expenses are perceived to be one of the most common IRS red flags. The IRS frequently reviews unreimbursed employee expenses in audits, as they are widely considered a high abuse category for W2 employees.

Does the IRS forgive honest mistakes?

We may be able to remove or reduce some penalties if you acted in good faith and can show reasonable cause for why you weren't able to meet your tax obligations. By law we cannot remove or reduce interest unless the penalty is removed or reduced.

How long can a non-resident alien stay in the US?

IRS regulations provide that a visitor who meets the Substantial Presence Test can still be treated as a nonresident alien if he meets the following tests: Present in the United States for fewer than 183 days in the current year and.