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

Registered cars count as '13 years' for inspections from 12 years 10 months after the first-registration month (18 years likewise from 17 years 10 months); the day of the month is irrelevant

初度登録年月から12年10ヶ月以後に車検証交付等 → 13年経過（18年も同様） rule

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

初度登録年月（小型二輪車の場合は初度検査年月）から12年10ヶ月以後に自動車検査証の交付等を受ける場合、「13年経過」となります。（租税特別措置法：第九十条の十一の二、第九十条の十一の三） … ※「18年経過」の考え方も同様。

key: jp/weight-tax/age-rule-registered
value: 初度登録年月から12年10ヶ月以後に車検証交付等 → 13年経過（18年も同様） rule
period: —
effective: — to date
source: https://www.mlit.go.jp/jidosha/content/001884517.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)
scope: 自家用 passenger cars (登録車, per 0.5 t of 車両重量, rounded up) and 検査対象軽自動車 (flat), paid at 継続検査 (車検) and used-car registration; エコカー = 本則税率 (eligible cars, 令和12年度燃費基準80%以上 etc.), 右以外 = 当分の間税率 for cars under 13 years, then the 13年経過 and 18年経過 rates. Table valid 2026-05-01 to 2028-04-30.
hash: sha256:a301c80ae113831751abdf39d01bd8f53562222d2509ac28e8061cf6df158a91
signature: EdDSA, key db-2026-10 — keys

As JSON

curl -s https://databutler.dev/f/jp/weight-tax/age-rule-registered?max_age=30d — schema; verify with npx verified-facts verify https://databutler.dev/f/jp/weight-tax/age-rule-registered

{
  "protocol": "verified-facts/0.3",
  "key": "jp/weight-tax/age-rule-registered",
  "label": "Registered cars count as '13 years' for inspections from 12 years 10 months after the first-registration month (18 years likewise from 17 years 10 months); the day of the month is irrelevant",
  "value": "初度登録年月から12年10ヶ月以後に車検証交付等 → 13年経過（18年も同様）",
  "unit": "rule",
  "period": null,
  "effectiveFrom": null,
  "effectiveTo": null,
  "source": "https://www.mlit.go.jp/jidosha/content/001884517.pdf",
  "quote": "初度登録年月（小型二輪車の場合は初度検査年月）から12年10ヶ月以後に自動車検査証の交付等を受ける場合、「13年経過」となります。（租税特別措置法：第九十条の十一の二、第九十条の十一の三） … ※「18年経過」の考え方も同様。",
  "verifiedDate": "2026-10-24",
  "nextScheduledRefresh": "2026-11-28",
  "changeCadence": "annual",
  "nextExpectedChange": "2027-04-01",
  "sourceCheckedAt": "2026-11-02",
  "status": "fresh",
  "ageDays": 13,
  "maxAgeDays": null,
  "scope": "自家用 passenger cars (登録車, per 0.5 t of 車両重量, rounded up) and 検査対象軽自動車 (flat), paid at 継続検査 (車検) and used-car registration; エコカー = 本則税率 (eligible cars, 令和12年度燃費基準80%以上 etc.), 右以外 = 当分の間税率 for cars under 13 years, then the 13年経過 and 18年経過 rates. Table valid 2026-05-01 to 2028-04-30.",
  "hash": "sha256:a301c80ae113831751abdf39d01bd8f53562222d2509ac28e8061cf6df158a91",
  "signature": {
    "alg": "EdDSA",
    "kid": "db-2026-10",
    "jws": "eyJhbGciOiJFZERTQSIsImtpZCI6ImRiLTIwMjYtMTAifQ..4r-DX80y8mI1PkQkarh4-Ashe4ONhOfzYauf3sTLrIWn-ld0bbfb9NVZbAPtlMui1ATXbIrmLLxiYRy1osMlCQ",
    "keys": "https://databutler.dev/.well-known/jwks.json"
  },
  "publisher": {
    "name": "Data Butler",
    "url": "https://databutler.dev/"
  },
  "cite": {
    "url": "https://databutler.dev/facts/jp/weight-tax/age-rule-registered",
    "text": "databutler.dev, verified 2026-10-24 against https://www.mlit.go.jp/jidosha/content/001884517.pdf"
  }
}