A practical, country-aware playbook for anyone earning, saving, or retiring across borders. Covers tax residency, pensions, currency risk, housing, and healthcare — plus deep dives for the US and UK.
Where you're tax-resident usually decides who taxes your worldwide income. Most expats rely on double-tax treaties, foreign tax credits, and — for US citizens — the Foreign Earned Income Exclusion (FEIE). Track physical-presence days rigorously; residency isn't just about a visa.
Contributions to a home-country pension often stop when you leave. Decide whether to keep, transfer (e.g. UK QROPS), or freeze. US 401(k)/IRA balances stay yours but new contributions usually require US earned income. Check treaty pension articles before rolling anything over.
You'll earn, spend, and invest across at least two currencies. Match liabilities to the currency you'll spend in (mortgage in local currency if you'll retire there), keep a 3–6 month buffer per currency, and prefer multi-currency brokers over converting every paycheck.
Foreign mortgages often need 30–40% down, higher rates, and residency proof. Rent for the first 12–24 months in most destinations; only buy once residency and career are stable. Factor exit costs (capital-gains, transfer taxes) into the rent-vs-buy math.
Home-country health cover almost never travels. Options: public system (once residency starts), employer scheme, or an international private plan (Cigna Global, Allianz, Bupa). Add term life in your working currency and disability cover with cross-border payout.
FEIE, FBAR, PFIC traps
Non-dom regime, ISA/SIPP rules
Departure tax, TFSA reporting
Superannuation on exit
SARP, remittance basis
Search-demand estimates via Semrush (2026).
It's the process of managing income, taxes, investments, pensions, insurance, and housing when you live or work in a country different from your citizenship. It combines cross-border tax law, currency management, and long-term retirement planning.
Yes. US citizens and green-card holders file US federal returns on worldwide income regardless of where they live. Most owe little or nothing thanks to the Foreign Earned Income Exclusion (FEIE) and Foreign Tax Credit, but filing (including FBAR / Form 8938) is required.
Usually stop and switch to the local scheme once you're tax-resident abroad. Keeping the old pot invested is fine; adding new contributions from foreign income often creates tax reporting problems in both countries.
Plan for 6 months of essential expenses split by currency — 3–4 months in local currency for rent and bills, plus 2–3 months in your home currency for repatriation, family, or debt payments.
Rent for the first 12–24 months in almost every case. Foreign mortgages are expensive, exit taxes are punishing if you leave within 5 years, and you don't yet know which neighborhood or city fits your job and family.
FuturePath compares cost of living, tax, and housing across six countries and hundreds of cities — then projects your net worth 3, 5, and 10 years out.