1. Memori
  2. ›
  3. Articles

Raising a Child Abroad — Birth Registration, Vaccinations, and Nationality: Three Things to Sort Out

By Leon MoriguchiPublished May 15, 2026Updated May 18, 20266 min read日本語版あり
Audience
Japanese nationals living abroad who are pregnant or raising young children; parents who gave birth outside Japan

TL;DR

  • ·The hardest deadline in Japan's overseas-birth system is consulate birth registration within three months — missing it creates serious risk of the child being unable to acquire Japanese nationality, and the 2022 amendment moved the nationality-choice deadline from age 22 to age 20 for most dual nationals
  • ·Vaccination schedules differ substantially by country — the US, UK, and EU each have divergences from Japan's routine schedule — and reconciliation after return requires a dedicated conversation with a Japanese pediatrician or public health center, not an assumption that coverage transfers directly
  • ·The boshi techo can be downloaded free as a PDF from the Children and Families Agency website (including multilingual editions with English alongside Japanese), and serves as the bridge vaccination and checkup record for the return transition

Contents

  1. Lead
  2. Registering at a Japanese embassy or consulate — and what happens to Japanese nationality
  3. The boshi techo abroad
  4. Vaccination schedules: an international comparison
  5. Procedures on returning to Japan
  6. Summary
  7. References

Lead

When a child is born and raised abroad, it becomes immediately unclear which country's procedures apply to which responsibilities. Vaccination schedules vary by country. A child's Japanese nationality can be lost if a registration deadline is missed. The boshi techo — Japan's Maternal and Child Health Handbook — is not available through the usual channels when you live overseas.

Because the information is so scattered, this article focuses on three specific points: birth registration, vaccinations, and nationality.

Partner Ultra / Ultra only

The rest of this article is for Partner Ultra / Ultra members

Anything affecting your child's health and safety is free. The more advanced reading is available to Memori members in the app.

Read the full article in the appSign in to keep reading →

Already a member? Sign in and the rest appears right here.

In the memori app

The memori app lets you choose who shares the records, and how far that sharing goes.

  • The same records are shared across the family, with visibility set per role.
  • Private groups for sharing photos beyond the household (creating one needs Partner Ultra or above; joining one you're invited to is free on any plan).
  • Grandparents don't need the app: three spoken words sign them in from a browser.
More about memori →
← PreviousPaying for Education in Japan — School Fee Aid, Child Allowance, and Post-Junior NISA SavingsNext →"The Japanese Is Disappearing" — What Bilingual Research Actually Says About Heritage Language and Re-entry

Related

  • From Daycare to Primary School — What to Know at Japan's Transition Points
  • Before Choosing an International School — Accreditation, Legal Status, and Costs
  • Navigating Japan's Developmental Support Benefits — A Map of Seven Systems