{"uid":"cap_ymGRNL0ZvZUh7Tf20VFoV","slug":"japan-social-insurance-premium-calculator-kyokai-kenpo-fy2026-edd652cb","name":"Japan Social Insurance Premium Calculator (Kyokai-Kenpo FY2026)","description":"Japan social insurance premiums: monthly remuneration to grade + health/care/pension/employment premiums from the official Kyokai-Kenpo FY2026 grade table, all 47 prefectures, official rounding. $0.01/call.","url":"https://mart402.com/v1/jp-social-insurance?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"age":{"type":"number"},"prefecture":{"type":"string"},"monthly_remuneration_yen":{"type":"number"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_o8XUGuFehvwPMiTXT-prA","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Converts monthly remuneration to the official grade and computes health, nursing care, pension, and employment insurance premiums for all 47 Japanese prefectures using the FY2026 Kyokai-Kenpo table with official rounding.","exampleAgentPrompt":"What are the FY2026 Japan social insurance premiums — health, nursing care, pension, and employment — for a 47-year-old employee in Osaka with a monthly remuneration of 380,000 yen?","exampleUseCases":[{"title":"Payroll deduction check for new hire","prompt":"We're onboarding a 35-year-old employee in Tokyo with a monthly salary of 320,000 yen — what will the health, pension, and employment insurance deductions be for FY2026?"},{"title":"Nursing care premium for older employee","prompt":"Our employee is 62 years old, based in Aichi, and earns 450,000 yen per month. How much will the nursing care insurance premium be under the current Kyokai-Kenpo table?"},{"title":"Employer cost planning across prefectures","prompt":"I'm comparing employer social insurance costs between Hokkaido and Kanagawa for a 40-year-old employee earning 500,000 yen a month — can you calculate the FY2026 premiums for both prefectures?"}],"resultDescription":"Returns the employee's official Kyokai-Kenpo insurance grade determined from the monthly remuneration, plus itemized premium amounts (health insurance, nursing care insurance if age ≥ 40, welfare pension, and employment insurance), split into employee and employer shares, all computed with official rounding rules for the specified prefecture and FY2026 rate table.","failureModes":["Invalid or missing prefecture returns a 400 error","Age outside valid range (e.g. negative) may cause a validation error","Monthly remuneration below minimum or above maximum grade boundary may return boundary grade","Missing required fields (age, prefecture, monthly_remuneration_yen) returns a 422 or 400 error","Prefecture name must match expected format (English romaji or Japanese)"],"whenToPreferThis":"Use this endpoint when you need accurate, official FY2026 Kyokai-Kenpo premium calculations for all 47 Japanese prefectures with correct grade mapping and rounding — especially for payroll auditing, HR onboarding cost estimation, or compliance checks. Prefer over manual lookups or generic payroll calculators that may not reflect current year rates or prefecture-specific health insurance variations.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T03:59:07.084Z","isFirstParty":false,"canonicalSlug":"japan-social-insurance-premium-calculator-kyokai-kenpo-fy2026-edd652cb"}