Residency determination looks simple. Until you're the one building logic around multiple jurisdictions, partial years, tie-breakers, and travel logs.
In Residex, we started by mapping the most common rules: 183-day thresholds, permanent home, habitual abode. But what mattered most was interpretability — making the logic traceable, auditable, and adjustable.
We designed the core engine around modular conditions. Each rule runs independently, returns a reason, and passes its result up to a resolver. That lets users see not just what the system says, but why.
The goal? Replace time-consuming advisory work with clean, trustworthy software logic.
Automate residency decisions with defensible logic.
Use Residex to evaluate tax residency exposure across jurisdictions with clear reasoning trails and faster advisory turnaround.