Coming Soon

Substantial Presence Test (SPT) Tracker

For non-US citizens: Determine if you are a US tax resident under the Substantial Presence Test. Automatically calculate your weighted presence days using the IRS 3-year formula.

Estimated Launch: Q2 2025

Planned Features

  • Automated 3-year weighted calculation (current year + 1/3 prior + 1/6 two years prior)
  • 183-day threshold monitoring
  • Exempt individual tracking (students, teachers, athletes, diplomats)
  • Closer Connection Exception eligibility
  • Treaty tie-breaker analysis (dual residency)
  • Form 8840 preparation support
  • Multi-year presence history
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