{"uid":"cap_O8MZW_gahi-FScVvM2mgU","slug":"mart402-japan-retirement-income-tax-calculator-49dddd19","name":"Mart402 Japan Retirement Income Tax Calculator","description":"Japan retirement income tax: deduction by years of service, half-taxation with short-term/officer exceptions, exact withholding rounding (1-yen floor), resident tax 6+4 percent split. $0.02/call.","url":"https://mart402.com/v1/jp-retirement-tax?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"payout_yen":{"type":"number"},"years_of_service":{"type":"number"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","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":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_JyECLcjq08hx7D-Y4zhsW","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Calculates Japan retirement income tax using official deduction schedules, short-term/officer exceptions, exact withholding rounding, and resident tax split","exampleAgentPrompt":"Calculate the retirement income tax for a Japanese employee receiving a ¥25,000,000 retirement payout after 32 years of service — include the deduction, withholding tax, and the resident tax split between the 6% and 4% portions.","exampleUseCases":[{"title":"HR payroll system retirement payout","prompt":"Our employee is retiring after 28 years of service and will receive a ¥18,000,000 lump-sum retirement allowance — what are the exact income tax and resident tax amounts to withhold, including the 6 and 4 percent resident tax split?"},{"title":"Short-tenure officer retirement tax check","prompt":"A company officer is leaving after only 4 years and getting a ¥8,500,000 retirement payout. What's the Japanese retirement income tax including the short-term officer exception and exact 1-yen floor rounding?"},{"title":"Financial planning for retirement lump sum","prompt":"I'm about to retire from my Japanese employer after 40 years and will receive ¥35,000,000. How much income tax and resident tax will be deducted from my retirement allowance under Japan's NTA rules?"}],"resultDescription":"Returns the computed retirement income deduction based on years of service, the taxable portion of the retirement payout (applying half-taxation and short-term/officer rules where applicable), the precise withholding income tax (rounded to the 1-yen floor), and the resident tax broken down into the 6% prefectural and 4% municipal components.","failureModes":["Missing required fields (payout_yen or years_of_service) returns a 400 validation error","Negative or zero years_of_service may return an error or degenerate deduction","Extremely large payout_yen values may exceed expected ranges","Non-numeric inputs result in schema validation failure","Edge cases for exactly 5 or 20 years of service boundary thresholds may need careful review"],"whenToPreferThis":"Use this endpoint when you need precise, NTA-compliant Japan retirement income tax calculations including the correct deduction schedule by years of service, half-taxation rule, short-term and officer exceptions, and exact 1-yen floor withholding rounding with resident tax split — especially when building Japanese HR, payroll, or financial planning systems that must match official tax authority output.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-01T00:49:16.302Z","isFirstParty":false,"canonicalSlug":"mart402-japan-retirement-income-tax-calculator-49dddd19"}