Tax filing checklist tool for US expats in Japan — FBAR, FATCA, RSU, NISA/iDeCo guidance in 2 minutes
github-pages pwa vanilla-javascript tax japan decision-tree fatca ideco rsu free-tools financial-tools fbar nisa tax-filing expat-tax us-expat japan-finance tax-checker foreign-tax-credit expat-japan
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Updated
Apr 12, 2026 - JavaScript