{
 "protocol": "verified-facts/0.2",
 "key": "jp/pension/kokumin-nenkin-premium",
 "label": "National pension (kokumin nenkin, 国民年金) premium per month, category 1 insured persons, FY2026",
 "value": 17920,
 "unit": "JPY/month",
 "period": "2026",
 "effectiveFrom": "2026-04-01",
 "effectiveTo": "2027-03-31",
 "source": "https://www.nenkin.go.jp/service/kokunen/hokenryo/hokenryo.html",
 "quote": "国民年金保険料の金額は、1カ月あたり17,920円です（令和8年度）",
 "verifiedDate": "2026-10-24",
 "nextScheduledRefresh": "2026-11-28",
 "status": "fresh",
 "ageDays": 1,
 "maxAgeDays": null,
 "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": "sha256:965c335b9be8fb3e9b6d8337d8be7cded63e10edb780967372808d87d5998e47",
 "signature": {
  "alg": "EdDSA",
  "kid": "db-2026-10",
  "jws": "eyJhbGciOiJFZERTQSIsImtpZCI6ImRiLTIwMjYtMTAifQ..sMG_mg1STU8uAQTA7s9jcB6Cc4DgdaNBhhI8NnjBgbDf2Xgy2YKwwJkPEzeW8iby4iPPz1kMcy6Fy5ijATJyCw",
  "keys": "https://databutler.dev/.well-known/jwks.json"
 },
 "publisher": {
  "name": "Data Butler",
  "url": "https://databutler.dev/"
 },
 "cite": {
  "url": "https://databutler.dev/f/jp/pension/kokumin-nenkin-premium",
  "text": "databutler.dev, verified 2026-10-24 against https://www.nenkin.go.jp/service/kokunen/hokenryo/hokenryo.html"
 }
}