01
Tax residency
Work through visa history and U.S. presence before deciding whether Form 1040-NR is the right path.
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1040-NR Tax Guides
Follow the same order used by the filing workspace: residency, income documents, treaty review, calculation, and line-by-line guidance.
02
W-2 and 1042-S income
Review the income and withholding fields that feed the calculation, with user confirmation before use.
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Treaty benefits
Check each treaty condition against the facts of the case instead of assuming a benefit from nationality alone.
Public guide04
Federal tax calculation
See the deterministic calculation chain for taxable income, estimated tax, withholding, and refund or balance due.
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FICA withholding review
Identify Social Security and Medicare withholding that may need a separate employer or IRS refund process.
Public guide06
Line-by-line filing guidance
Turn the completed review into a practical filing guide showing where each confirmed amount belongs.
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