Free calculators
Substantial Presence Test calculator
Check your US tax residency under the IRS weighted three-year count.
For educational purposes only. This tool counts calendar days for general informational purposes and does not constitute legal, tax, or financial advice. Tax laws and residency rules change frequently, vary by jurisdiction, and edge cases exist. Always consult a qualified professional for advice tailored to your specific situation. For the full picture, read our Tax Residency guides.