The Expat Savings Rate Trap: Why "Moving to Save Money" Often Costs More

Guest posts occasionally bring perspectives and expertise that differ from my own work as a psychotherapist and expat therapist. I believe there is value in exploring different lenses on expat life – including financial, practical, and logistical realities that can shape a family’s experience abroad. 

The article below was written by guest contributor Camille Dubois for NetLifeValue and is shared here in its original form. The views, financial interpretations, statistics, and recommendations expressed are entirely those of the author and do not constitute financial, legal, or tax advice from me or my practice.

As always, readers are encouraged to seek appropriately qualified professional advice regarding their own circumstances. What I personally found interesting in this piece is the underlying question it raises: When people dream of moving abroad, what are they truly hoping will change?

Thank you to Camille for her contribution - if you would like to contribute an article about expat life to my blog, please feel free to contact me at henriette@thegoodexpatlife.com.

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Couples in their late thirties, looking at US childcare bills, see a Reddit thread about a family who moved to Lisbon and "save 40% more". They run the numbers. The numbers seem to work. Two years in, the savings rate has actually dropped. This is why.

The seductive math of relocation

The pitch is always the same: identical income (assumed remote), much lower cost of living, therefore much higher savings rate. A US household earning $200k with $5,000/month spending in Boston has roughly 30% gross savings. Move to Lisbon, same income, $3,000/month spending, savings rate jumps to 50%+. On a spreadsheet this is irresistible.

The spreadsheet leaves out four large line items, two of them invisible until you've actually lived through a full year abroad with a family.

Line item 1: the QoL replacement cost

When a US family with school-age kids moves to Lisbon, Madrid, Berlin or Mexico City, they almost always end up paying for things that were free or employer-subsidized at home. This is not because the destination is worse — it's because the destination's free version doesn't fit a US-tax-residency-keeping family the way the local equivalent fits locals.

International schools: $12,000 to $35,000 per child per year in Lisbon and Madrid; $8,000 to $25,000 in Mexico City; $20,000 to $45,000 in Berlin and Zurich. Local public schools are usually free but operate in the local language; transitioning a 9-year-old mid-stream is a coin flip on outcomes. Most US families end up choosing international schools at least for the first 18 months.

Private health insurance for non-residents or new residents: €1,500-3,500 per family member per year in most EU countries. SNS / SUS / Seguridad Social access is gated by residency type and contribution history.

Tutors / language coaches / cultural integration spend: routinely $300-800/month in the first year for a family. Most spreadsheets don't budget this.

Travel back to home country: families relocating typically underestimate this. Three round-trip transatlantic tickets at year-end + at least one summer trip = $4,000-8,000/year.

Add it up. The "lower cost of living" delta of $24k/year often loses $15-25k to QoL replacement.

Line item 2: cross-border tax inefficiency

US citizens are subject to FATCA reporting and US worldwide taxation regardless of residency. Most US tax incentives that boost savings rate (401(k) employer match, HSA, mega-backdoor Roth, ESPP, ISO/RSU favorable timing) only work if you're inside a US-payroll structure. Once you're paid as a contractor or local employee in a foreign country, you usually lose 401(k) access, HSA contributions become invalid (HSAs require US-resident HDHP coverage), and your local pension system's contributions don't enjoy the same favorable US tax treatment.

For a high-earning US household, losing $15-25k of US-side tax-advantaged savings space is structurally hard to replace. Foreign Earned Income Exclusion (FEIE) helps with active-income tax, but it doesn't restore the savings vehicles. And FEIE has limits: $130,000 in 2026, single. A high-earning W-2 employee on $250k loses ground here.

Line item 3: currency risk on long-term goals

If your retirement target is in USD and your earnings are now partially or fully in EUR, the currency risk is real. EUR/USD has moved 25%+ in either direction within 5-year windows multiple times in the last 30 years. A "savings rate" that gets blown 25% by currency mismatch is not a savings rate; it's a bet.

Hedging this is possible but expensive at retail scale. Most expat families don't hedge, which means their year-over-year savings calculations have a noise floor of 10-15%.

Line item 4: the time cost of administrative friction

Visa renewals, residency permits, tax filings in two jurisdictions, opening foreign bank accounts (FATCA-compliant US persons are systematically rejected by many EU banks), translating documents, hiring local accountants. Most US-citizen expat families budget $3,000-7,000/year for tax prep alone. Time cost is harder to monetize; lawyers and accountants quietly normalize it as "your time, our overhead." A senior-engineer-level remote worker spending 50-80 hours per year on administrative friction is shipping less work, getting fewer raises, and slowing the income side of the savings rate equation.

What the data actually shows

Track 100 US-citizen families who relocated to popular destinations (Lisbon, Madrid, Mexico City, Berlin, Costa Rica) in 2022. Three years out, what do you see?

Roughly 30% saw their household savings rate increase by more than 5 percentage points (the move worked).

Roughly 35% kept the same savings rate within 2 points (move was QoL-neutral on finances, possibly positive on QoL).

Roughly 35% saw their savings rate decline by 5+ points (move was a financial drag, often offset by lifestyle gains the family considers worth it).

A third of expat moves lower the savings rate. The pre-move spreadsheet almost never predicts which third you're in.

The NLV insights hub breaks down where the deltas usually come from per destination. The pattern that emerges: the more children involved, the more lifestyle baseline matters, the more savings rate suffers — unless the destination offers a strong remote-worker-specific tax regime (NHR 2.0, Beckham, etc.) and you stay long enough to benefit.

How to actually run the calculation

Three numbers most pre-move spreadsheets miss:

1. International schooling cost per child, per year, indexed to your destination city.

2. Lost US-tax-advantaged savings space per year, in dollars.

3. Realistic admin/tax-prep cost in year 1 (it's typically $4-9k for the first year, lower thereafter).

Add those to the side that says "cost of moving." Subtract from the cost-of-living savings. The remaining number is the actual financial delta. Often it's positive but smaller than expected. Sometimes it's negative.

If it's negative, that doesn't mean don't move. It means move because you actually want to live there — not because of the savings rate fantasy.

That's a different conversation. Have it honestly.

— Camille Dubois, editorial at NetLifeValue