databutler.dev · /facts — every fact · Verified Facts protocol · /.well-known/facts.json · /changes

Kyōkai Kenpo child-rearing levy rate (子ども・子育て支援金率; nationwide, added on top of the health insurance rate from April 2026, employer + employee combined)

0.23 % of standard remuneration (employer + employee)

2026, from 2026-04-01 · verified 2026-10-24 against the official source · next expected change 2027-03-01

令和8年4月分（5月納付分）から 0.23％
key
jp/health-insurance/child-rearing-levy
value
0.23 % of standard remuneration (employer + employee)
period
2026
effective
2026-04-01 to date
source
https://www.kyoukaikenpo.or.jp/about/business/insurance_rate/003/
verified
2026-10-24 — fresh (13 days ago; next check by 2026-11-28)
next expected change
2027-03-01 (annual: a fixed day each year)
source checked
2026-11-02 (the newest day the automated check fetched the source page)
scope
全国健康保険協会（協会けんぽ） members only — not 組合健保, 共済 or 国民健康保険. Rates are employer + employee combined (労使折半: each pays half). The prefecture rates apply from 令和8年3月分（4月納付分）(任意継続・日雇特例: 4月分). From 令和8年4月分 the 子ども・子育て支援金率 0.23% is collected on top, and insured persons aged 40–64 also pay the 介護保険料率 1.62%. Quoted as published by 協会けんぽ (出所明示により引用可; 改変不可).
hash
sha256:8fc8a6c0e11a92bf71f28e7af8c5f3d9930eeba52dd03708394386610342e27d
signature
EdDSA, key db-2026-10 — keys

As JSON

curl -s https://databutler.dev/f/jp/health-insurance/child-rearing-levy?max_age=30d — schema; verify with npx verified-facts verify https://databutler.dev/f/jp/health-insurance/child-rearing-levy

{
  "protocol": "verified-facts/0.3",
  "key": "jp/health-insurance/child-rearing-levy",
  "label": "Kyōkai Kenpo child-rearing levy rate (子ども・子育て支援金率; nationwide, added on top of the health insurance rate from April 2026, employer + employee combined)",
  "value": 0.23,
  "unit": "% of standard remuneration (employer + employee)",
  "period": "2026",
  "effectiveFrom": "2026-04-01",
  "effectiveTo": null,
  "source": "https://www.kyoukaikenpo.or.jp/about/business/insurance_rate/003/",
  "quote": "令和8年4月分（5月納付分）から 0.23％",
  "verifiedDate": "2026-10-24",
  "nextScheduledRefresh": "2026-11-28",
  "changeCadence": "annual",
  "nextExpectedChange": "2027-03-01",
  "sourceCheckedAt": "2026-11-02",
  "status": "fresh",
  "ageDays": 13,
  "maxAgeDays": null,
  "scope": "全国健康保険協会（協会けんぽ） members only — not 組合健保, 共済 or 国民健康保険. Rates are employer + employee combined (労使折半: each pays half). The prefecture rates apply from 令和8年3月分（4月納付分）(任意継続・日雇特例: 4月分). From 令和8年4月分 the 子ども・子育て支援金率 0.23% is collected on top, and insured persons aged 40–64 also pay the 介護保険料率 1.62%. Quoted as published by 協会けんぽ (出所明示により引用可; 改変不可).",
  "hash": "sha256:8fc8a6c0e11a92bf71f28e7af8c5f3d9930eeba52dd03708394386610342e27d",
  "signature": {
    "alg": "EdDSA",
    "kid": "db-2026-10",
    "jws": "eyJhbGciOiJFZERTQSIsImtpZCI6ImRiLTIwMjYtMTAifQ..3hX5L1sYaz1FeSbC9_m84CM_Y5V3vE8qs3DFpl1zBfy2BC1AbzSOw-6s0KSF5_yU_REGf_mdYfomzF1FBvaTDA",
    "keys": "https://databutler.dev/.well-known/jwks.json"
  },
  "publisher": {
    "name": "Data Butler",
    "url": "https://databutler.dev/"
  },
  "cite": {
    "url": "https://databutler.dev/facts/jp/health-insurance/child-rearing-levy",
    "text": "databutler.dev, verified 2026-10-24 against https://www.kyoukaikenpo.or.jp/about/business/insurance_rate/003/"
  }
}