At a glance
| Factor | Seoul | Brussels |
|---|---|---|
| Premium international school fees (secondary) | KRW 38,000,000 to KRW 52,000,000 (USD 28,500 to USD 39,000) | EUR 28,000 to EUR 50,000 (USD 30,500 to USD 54,500) at ISB and BSB |
| Mid-tier annual fees | KRW 18,000,000 to KRW 30,000,000 | EUR 16,000 to EUR 28,000 at St John's, BEPS and Lycee Francais |
| Dominant curricula | American, IB, British, French | IB, British, European Baccalaureate, French |
| Family visa route | F-series dependent visas for spouses and children once the lead earner holds a D-7, D-8 or E-7 work visa. | EU Blue Card, intra-corporate transfer and Single Permit. |
| Personal income tax | Korea taxes residents on worldwide income with progressive rates up to 45 percent. | Belgium taxes residents at progressive rates up to 50 percent; the expatriate special tax regime can reduce the effective rate for qualifying inbound staff. |
| Climate | Four seasons, hot humid summers around 25 to 32 degrees and cold dry winters down to minus 10. | Temperate maritime, cool wet winters at 1 to 7 degrees and pleasant summers at 17 to 24. |
Seoul pairs American depth with korea taxes residents on worldwide income with progressive rates up to 45 percent. Brussels matches it with IB depth and belgium taxes residents at progressive rates up to 50 percent; the expatriate special tax regime can reduce the effective rate for qualifying inbound staff. Both cities are credible postings for families on global rotation; the right answer turns on curriculum continuity, headline cost and which lifestyle suits the children.
Schools landscape side by side
Seoul's flagships are Seoul Foreign School (SFS) in Yeonhui-dong, Seoul International School (SIS) in Seongnam, Dwight School Seoul on Yeouido, Chadwick International in Songdo and Dulwich College Seoul. Seoul's foreigner-only schools are tightly controlled by the Korean Ministry of Education and you should confirm eligibility before signing a lease. See the Seoul schools hub for the full list.
Brussels's flagships are International School of Brussels (ISB) in Watermael-Boitsfort, British School of Brussels (BSB) in Tervuren, the four European Schools (Brussels I to IV), St John's International School and BEPS International. European Schools are free for Category I (EU institution) families, around EUR 13,500 for Category II (intergovernmental staff) and a sliding scale for Category III private families. ISB and BSB are open to all. See the Brussels schools hub.
Not sure which city fits your family?
Take the 5 minute school finder quiz, then run the cost calculator for both cities. You get shortlisted schools plus a side by side relocation budget in under ten minutes.
Fees and value for money
Seoul premium IB and British IGCSE plus A Level fees at the flagships sit at KRW 38,000,000 to KRW 52,000,000 (USD 28,500 to USD 39,000). Mid-tier and newer entrants run KRW 18,000,000 to KRW 30,000,000. Bus and uniform typically add 5 to 8 percent on top. See the fees explorer for distribution.
Brussels premium fees at the flagships sit at EUR 28,000 to EUR 50,000 (USD 30,500 to USD 54,500) at ISB and BSB, with mid-tier options at EUR 16,000 to EUR 28,000 at St John's, BEPS and Lycee Francais. Capital levies, registration deposits and enrolment fees are common at the premium end; budget at least one extra month of tuition in year one for those line items.
Curriculum availability
Both cities deliver the IB Diploma at flagship level. Seoul tilts toward American and IB provision. Brussels tilts toward IB and British. The IB Diploma remains the safest portable credential for families on rotation; see the IB hub for cross-city analysis. British IGCSE plus A Level is widely available in both. American AP coverage is stronger in one of the two cities (see schools landscape above).
Neighbourhoods families pick
In Seoul families cluster in Yongsan and Hannam-dong for SFS, Gangnam-gu and Seongnam for SIS, Yeouido for Dwight, and Songdo (Incheon Free Economic Zone) for Chadwick. A three-bedroom apartment in Hannam-dong or Itaewon runs KRW 4.5 to 8 million per month. School bus coverage, daily commute and weekend activity drive the choice as much as the housing itself.
In Brussels families pick Uccle, Ixelles and Watermael-Boitsfort for ISB families; Tervuren and Sterrebeek for BSB; Woluwe-Saint-Lambert and Woluwe-Saint-Pierre for European School families. A four-bedroom house in Tervuren or Uccle runs EUR 3,500 to EUR 6,500 per month. Most relocation packages cover housing for the first three to twelve months, after which families settle into the neighbourhood closest to their child's primary school.
Lifestyle and climate
Seoul climate: Four seasons, hot humid summers around 25 to 32 degrees and cold dry winters down to minus 10. Air quality dips in spring (fine dust from regional sources) but otherwise the city is clean, very safe and exceptionally well connected. Brussels climate: Temperate maritime, cool wet winters at 1 to 7 degrees and pleasant summers at 17 to 24. Excellent rail connections to Paris, London and Amsterdam. Beyond weather, family life patterns diverge: Seoul runs on its own urban rhythm of school, sport and weekend escapes, while Brussels reaches into a different cultural and travel hinterland. Modelling a year in each through the cost calculator is the cleanest way to compare.
Verdict: who picks which city
Choose Seoul if American continuity matters, your child is settled in that pathway, and the Korea taxes residents on worldwide income with progressive rates up to 45 percent. suits your earning bracket. Families on senior corporate packages typically lean here when housing or schooling allowances are generous.
Choose Brussels if IB provision is what your child needs, the lifestyle fits, and the visa route is well matched to your sector. Cross-check against the all comparisons page and the school finder quiz to anchor the decision.
Frequently asked questions
Is Seoul or Brussels cheaper for international school families in 2026?
Seoul premium tuition runs KRW 38,000,000 to KRW 52,000,000 (USD 28,500 to USD 39,000), with mid-tier options at KRW 18,000,000 to KRW 30,000,000. Brussels sits at EUR 28,000 to EUR 50,000 (USD 30,500 to USD 54,500) at ISB and BSB for premium schools and EUR 16,000 to EUR 28,000 at St John's, BEPS and Lycee Francais for mid-tier. On top of tuition, factor in housing differences and tax treatment, which often swing the total package by more than the headline fee gap.
Which city has stronger international schools?
Seoul's flagships are Seoul Foreign School (SFS) in Yeonhui-dong and a clutch of named names alongside. Brussels brings International School of Brussels (ISB) in Watermael-Boitsfort and a comparable bench. Quality at the very top is broadly comparable; the right pick usually depends on the curriculum your child is already in.
Is the family visa easier in Seoul or Brussels?
Seoul: F-series dependent visas for spouses and children once the lead earner holds a D-7, D-8 or E-7 work visa. Foreign-only schools require children to hold foreign citizenship or have lived abroad for the minimum required years. Brussels: EU Blue Card, intra-corporate transfer and Single Permit. Family reunification is straightforward for permit holders and processed by the regional authority in six to ten weeks.
How does the climate compare for families?
Seoul: Four seasons, hot humid summers around 25 to 32 degrees and cold dry winters down to minus 10. Air quality dips in spring (fine dust from regional sources) but otherwise the city is clean, very safe and exceptionally well connected. Brussels: Temperate maritime, cool wet winters at 1 to 7 degrees and pleasant summers at 17 to 24. Excellent rail connections to Paris, London and Amsterdam.
Where do most expat families live in each city?
In Seoul families cluster in Yongsan and Hannam-dong for SFS, Gangnam-gu and Seongnam for SIS, Yeouido for Dwight, and Songdo (Incheon Free Economic Zone) for Chadwick. In Brussels families pick Uccle, Ixelles and Watermael-Boitsfort for ISB families; Tervuren and Sterrebeek for BSB; Woluwe-Saint-Lambert and Woluwe-Saint-Pierre for European School families.
