Moving Abroad with Kids: School Costs and Family Budget

Two kids in international school in Lisbon can cost €50,000 a year in tuition alone — more than most Americans pay for two years of in-state college. The same two kids in English-medium schools in Medellín cost roughly $15,000. That single line item determines whether a geographic arbitrage move actually saves money for a family or merely relocates the financial pressure to a new currency. This guide is built around the numbers: what school, healthcare, and housing actually cost in the most popular expat family destinations, and how the math looks compared to staying in the US.

International School Costs: The Variable That Changes Everything

Most cost-of-living comparisons for expats are written for single adults or couples without children. Remove school costs and Lisbon, Chiang Mai, or Medellín look dramatically cheaper than any US metro. Add two school-age kids and the math shifts. In some destinations, annual tuition for two children exceeds the local rent bill by a factor of three.

English-medium international schools — the most practical choice for children who will return to a US university system — typically follow one of three curricula: the International Baccalaureate (IB), an American curriculum aligned with US standards, or a British curriculum leading to A-levels and IGCSEs. IB diplomas are broadly recognised by US universities. American curriculum schools are the closest to home-country continuity. British curriculum schools are strong academically and common in former Commonwealth countries and Southeast Asia.

The table below shows verified tuition ranges for English-medium international schools in the most popular expat family destinations, as of the 2025–2026 academic year. These are annual per-child figures for primary and secondary grades; early-years programmes are often priced slightly lower.

Destination	Annual tuition range (per child)	Typical curriculum	Notes
Medellín, Colombia	$5,000–$13,400	IB, bilingual Spanish/English	Columbus School: $7,300–$13,400; good mid-tier options from $5,000
Chiang Mai, Thailand	$8,500–$18,300	IB, British, American	Prem Tinsulanonda International: top end; budget options from ~$4,800
Mexico City / Playa del Carmen	$4,000–$14,000	American, IB, bilingual	Playa del Carmen has strong options for expatriate families
Lisbon, Portugal	€10,500–€26,700	IB, British, American	Most schools are €13,000–€22,000; early years slightly lower
United States (private school, average)	$14,000–$17,000	American	Public school is free but quality varies significantly by zip code

Tuition figures sourced from school websites and International Schools Database as of June 2026. Fees change annually; verify directly with each school before budgeting.

Full Family Budget by Destination

The comparison below shows a realistic monthly budget for a family of four — two adults working remotely, two school-age children — in each destination. School costs are annualised and shown as a monthly equivalent. Healthcare line assumes international health insurance; see the expat health insurance guide for plan details and carrier comparisons.

Budget item	Medellín	Chiang Mai	Mexico City	Lisbon	US (Austin, TX)
3BR housing (mid-range)	$1,000–$1,500	$700–$1,200	$1,200–$2,000	€1,800–€2,800	$2,800–$3,800
School (2 kids, monthly equiv.)	$830–$2,230	$1,420–$3,050	$670–$2,330	€1,750–€4,450	$2,330–$2,830 (private) or $0 (public)
Groceries and dining	$600–$900	$400–$700	$600–$900	€700–€1,100	$1,200–$1,600
Family health insurance	$350–$600	$350–$600	$350–$600	€350–€600	$1,200–$1,800 (employer plan typical)
Transport and utilities	$300–$500	$250–$450	$350–$600	€450–€700	$800–$1,200
Misc. (activities, childcare, savings buffer)	$400–$600	$300–$500	$400–$600	€400–€600	$600–$1,000
Total monthly estimate	$3,480–$6,330	$3,420–$6,500	$3,570–$7,030	€5,450–€10,250	$8,930–$12,230

Healthcare for Children Abroad

Pediatric Care Quality and Out-of-Pocket Costs

Healthcare quality is the concern parents rank highest after schools. The good news: every destination in the table above has adequate private healthcare for acute and routine pediatric needs. The distinction is between countries with functioning public systems (where international families still typically use private care to avoid queues) and countries where private care is the only reliable option.

In Colombia, Thailand, and Mexico, private hospitals serving expat families are modern, English-speaking, and dramatically cheaper than equivalent US care. A pediatric emergency visit in Medellín typically runs $100–$300 out of pocket without insurance. A similar visit in Austin averages $1,200–$2,500 before insurance adjustments.

Portugal has a national health service that covers legal residents, but wait times for specialist care can be long. Most expat families use private health insurance that covers both the public and private sectors.

International Health Insurance Premiums for Families

International health insurance premiums for a family of four vary by plan. SafetyWing Nomad insurance covers children under ten at no additional premium for parents. Standard family plans from Cigna Global, Allianz Care, and AXA typically run $350–$700/month for a family of four depending on age of adults, deductible level, and coverage region. These costs are included in the budget table above. See the expat health insurance guide for a detailed plan comparison.

Tax Angles for Expat Families

The Child Tax Credit is worth $2,000 per qualifying child for 2025. The refundable portion — the Additional Child Tax Credit (ACTC) — is worth up to $1,700 per child per IRS Publication 972. For expat families, the ACTC interaction with the FEIE is one of the most financially significant and least-understood tax rules: if you exclude earned income through the FEIE, you cannot claim the ACTC for the same amount of income. The exclusion that shelters your income from US tax also removes the income from the ACTC calculation, which is based on earned income. A family using the full FEIE on $130,000 of earned income could lose $3,400 per year in refundable credits — $1,700 per child. The full mechanics and how to model this decision are covered in the expat families ACTC guide.

For US families with foreign-earned income who use the Foreign Tax Credit instead of the FEIE, the ACTC calculation proceeds normally based on earned income. If your children qualify as US residents for tax purposes, the $2,000 non-refundable CTC phases out at modified AGI above $200,000 for single filers and $400,000 for married filing jointly.

Visa and Residency: Children as Dependents

Most long-stay family visas cover children under 18 as dependents under the primary applicant's permit. The key documents required for a child's dependent visa typically include: birth certificate (often apostilled), evidence of custody if applicable, child passport valid for the term of the visa, and proof the primary applicant can support dependents financially.

Children's US passports for travel are issued through the US State Department's minor passport process, which requires both parents' consent or a custody/sole-authority declaration for children under 16. Arrange this before finalising your move date if your child's passport is expiring.

A few important country-specific notes:

• Colombia: Children under 7 do not need a visa if the parent holds a valid resident visa. Children 7–17 require a dependent visa (Visa M) tied to the parent's permit.
• Thailand: Children under 20 can hold a Non-Immigrant O (dependent) visa tied to a parent's LTR, work permit, or retirement visa. International schools often assist with the paperwork.
• Mexico: Children are covered under the temporary or permanent residency application as dependents. Mexico's temporary residency allows renewals for one to four years and then conversion to permanent.
• Portugal: Children are included in a family reunification application after the primary applicant establishes residency, or they may apply simultaneously for a D7/D8 dependent permit.

The School Calendar Problem

Most international schools in Asia and Europe follow a September–June academic year aligned with the Northern Hemisphere. Schools in the Southern Hemisphere (Argentina, Chile, Australia, New Zealand) follow a January–December calendar, meaning a move mid-year requires your child to either skip or overlap a semester transition.

Families who plan to move should time the transition for July–August (for Northern Hemisphere schools) or November–December (for Southern Hemisphere schools) to minimise disruption. International schools typically have intake periods at the start of the academic year; mid-year entry is possible but space is limited in popular schools. Waitlists at top-tier international schools in Bangkok, Singapore, Medellín's Columbus School, and Lisbon's British Preparatory School can be six months to two years long. Apply well before you plan to move.

IB diploma holders apply to US universities with strong results historically. The IB is accepted by all major US universities and increasingly well-understood by admissions officers. The American curriculum route gives the smoothest re-entry if the family returns to the US before high school graduation.

Practical Checklist: Moving a Family Abroad

• 12–18 months before: Identify your target city and research international school waitlists. Apply to schools well before making any visa decisions.
• 9–12 months before: Apply for your primary visa and dependent visas simultaneously. Gather and apostille all required documents (birth certificates, marriage certificate if needed).
• 6 months before: Secure housing in proximity to the school. Many expat parents prioritise the school location first and find housing within the school's bus network second.
• 3 months before: Sort international health insurance that covers children from day one. Confirm vaccination records meet the school's requirements — each country and school varies, and many require proof of MMR, varicella, and hepatitis B. Check the CDC travel health notices and vaccination recommendations for your destination country before departure.
• At arrival: Register children with local civil authorities (Padron municipal in Spain, registro in Colombia, etc.) as this is often required for visa renewals.
• First tax year: Model your FEIE vs. FTC decision in the context of child tax credit impact. A CPA who specialises in expat family returns is worth the fee in year one.

Who This Works For — and Who Should Wait

Geographic arbitrage with children works best when:

• Children are preschool age or in early primary school. The younger the child, the easier the transition academically and socially.
• The remote income stream is stable enough to cover school fees in the destination even in a bad revenue month. School fees are fixed costs that do not flex with income fluctuations.
• Both parents are on board and have roles they can perform remotely or locally. The logistics of a family international move are significant; a reluctant partner adds friction that compounds.
• The family is prepared for a 3–5 year commitment. One year abroad rarely produces the financial benefit it promises because setup costs (visa fees, relocation, school enrollment fees, furnished rental premium) take 6–12 months to pay off.

Families with children in grades 10–12 face a harder calculation. High school continuity, college application preparation, and the social cost of leaving an established peer group are real. Moving with a 9th or 10th grader is possible — especially if the destination school offers a strong IB programme — but requires honest conversation about what the student is willing to take on. Moving with a senior heading into their final year of an American curriculum is rarely worth the disruption.

A family living in a high-cost-of-living US city — San Francisco, New York, Boston — with school-age children in private school has the most compelling case for a move. Replacing $12,000/month in combined costs with $5,000/month in Medellín or $4,500 in Chiang Mai produces a gap wide enough to pay for years of travel, save aggressively, and still come out ahead even with the school fees factored in. See the full cheapest countries to live guide for baseline cost comparisons that can anchor your own calculations.

Conclusion

The school question is the hinge point of every family geographic arbitrage decision. Get the school shortlist right — check waitlists, verify curriculum continuity, confirm the commute — and the rest of the budget planning becomes manageable. Miss it and the move either forces your children into a school that does not fit or blows the budget you thought you were optimising. The destinations with the best cost-school combination for most English-speaking families are Medellín and Mexico City for Latin America, and Chiang Mai and parts of Southeast Asia for families willing to go further east. Lisbon works well financially but requires careful school selection to avoid tuition that rivals the US.

Data Notes / Sources Checked

School fees and budget figures verified as of June 2026. Sources consulted:

• International Schools Database — tuition fees by school and country
• IRS — Child Tax Credit and Additional Child Tax Credit
• IRS Publication 54 — Tax Guide for US Citizens and Resident Aliens Abroad
• ExpatSchoolGuide — international school curriculum and fees comparisons