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

National pension (kokumin nenkin, 国民年金) premium per month, category 1 insured persons, FY2027 (from 2027-04-01)

18290 JPY/month

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

実際の保険料額 17,920 円 18,290 円（＋410 円）（＋370 円）
key
jp/pension/kokumin-nenkin-premium-from-2027-04
value
18290 JPY/month
period
2027
effective
2027-04-01 to date
source
https://www.mhlw.go.jp/content/12600000/001672868.pdf
verified
2026-10-24 — fresh (13 days ago; next check by 2026-11-28)
next expected change
2027-04-01 (annual: a fixed day each year)
source checked
2026-11-02 (the newest day the automated check fetched the source page)
previous
17920 JPY/month (2026)
scope
厚生年金 contribution rate (employer + employee, 被保険者負担 9.15%); 国民年金 第1号被保険者 monthly premium (付加保険料 400円 not included); 老齢基礎年金 full amount for one person with 40 years of contributions, paid from the April 2026 instalment (6月15日支払分).
hash
sha256:0ef30c88d725a3012a929c838ed19072a8349059441dde333b74df7535b45ea8
signature
EdDSA, key db-2026-10 — keys

As JSON

curl -s https://databutler.dev/f/jp/pension/kokumin-nenkin-premium-from-2027-04?max_age=30d — schema; verify with npx verified-facts verify https://databutler.dev/f/jp/pension/kokumin-nenkin-premium-from-2027-04

{
  "protocol": "verified-facts/0.3",
  "key": "jp/pension/kokumin-nenkin-premium-from-2027-04",
  "label": "National pension (kokumin nenkin, 国民年金) premium per month, category 1 insured persons, FY2027 (from 2027-04-01)",
  "value": 18290,
  "unit": "JPY/month",
  "period": "2027",
  "effectiveFrom": "2027-04-01",
  "effectiveTo": null,
  "source": "https://www.mhlw.go.jp/content/12600000/001672868.pdf",
  "quote": "実際の保険料額 17,920 円 18,290 円（＋410 円）（＋370 円）",
  "verifiedDate": "2026-10-24",
  "nextScheduledRefresh": "2026-11-28",
  "changeCadence": "annual",
  "nextExpectedChange": "2027-04-01",
  "sourceCheckedAt": "2026-11-02",
  "status": "fresh",
  "ageDays": 13,
  "maxAgeDays": null,
  "previous": {
    "value": 17920,
    "period": "2026",
    "source": "https://www.mhlw.go.jp/content/12600000/001672868.pdf"
  },
  "scope": "厚生年金 contribution rate (employer + employee, 被保険者負担 9.15%); 国民年金 第1号被保険者 monthly premium (付加保険料 400円 not included); 老齢基礎年金 full amount for one person with 40 years of contributions, paid from the April 2026 instalment (6月15日支払分).",
  "hash": "sha256:0ef30c88d725a3012a929c838ed19072a8349059441dde333b74df7535b45ea8",
  "signature": {
    "alg": "EdDSA",
    "kid": "db-2026-10",
    "jws": "eyJhbGciOiJFZERTQSIsImtpZCI6ImRiLTIwMjYtMTAifQ..x9kg-zTF_fctHXELISkS_Y8m-v604BH8utjt0NQCU8nxWnGfspMpjkLRIdLsQmCvn6OrEMna60gdQNcf3SeLCA",
    "keys": "https://databutler.dev/.well-known/jwks.json"
  },
  "publisher": {
    "name": "Data Butler",
    "url": "https://databutler.dev/"
  },
  "cite": {
    "url": "https://databutler.dev/facts/jp/pension/kokumin-nenkin-premium-from-2027-04",
    "text": "databutler.dev, verified 2026-10-24 against https://www.mhlw.go.jp/content/12600000/001672868.pdf"
  }
}