Estimate international inheritance, estate and gift tax exposure across 21 fully computed countries (United States, United Kingdom, France, Germany, Spain, Italy, Ireland, Netherlands, Greece, Portugal, Denmark, Canada, Japan, South Korea, Philippines, South Africa, Taiwan, Thailand, Finland, Iceland, Sweden) with tax-treaty relief, situs rules, per-heir allowances, per-asset breakdowns and what-if modeling. All 50 US states are screened, with the 16 states plus Washington DC that levy their own death taxes flagged with current figures; 35+ more countries are covered as general reference. Built for wealth managers, tax advisors, estate lawyers and family offices handling cross-border and mixed-nationality estates. All computation happens in your browser — enable JavaScript to use the calculator.