Free tools

• Two-Home Budget Planner

  Run a US home in dollars and a home in Spain, Portugal or France in euros on one budget, month by month, with every figure in both currencies.

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• France Visa Income Checker

  Check your pensions, Social Security and regular withdrawals against France's visitor-visa resources test, in euros at today's rate, and see how a currency move changes the margin.

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• Residency Day Counter

  Log your trips and see your Schengen 90/180 days, each country's 183-day tax test and your days in the US, before you cross a line by accident.

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• France Residence Check

  Spending part of the year in France? Answer a few plain questions to see whether any of France's four residence tests, or the treaty tie-breaker, points to France.

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• Spain Residence Check

  Spending part of the year in Spain? Check Spain's 183-day test, the economic-interests test and the family presumption, and where the US-Spain treaty tie-breaker would land.

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• Portugal Residence Check

  Spending part of the year in Portugal? Check the 183 days in any 12 months, the habitual-home test that needs no day count, and where the US-Portugal treaty tie-breaker would land.

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• Spain Visa Income Checker

  Check your pensions, Social Security and regular withdrawals against Spain's non-lucrative visa: 400% of IPREM a month for the main applicant and 100% for each family member, in euros at today's rate.

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• Portugal D7 Visa Income Checker

  Check your pensions, Social Security and regular withdrawals against Portugal's D7 visa: the minimum wage for you, 50% more for a spouse and 30% for each child, plus about a year of it in savings.

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More tools are on the way: a lease move-in cost calculator and a cost-of-living comparison.