Japan statutory calculations: net pay, social insurance, tax walls, holidays. Cited sources, x402.
| Endpoint | https://mart402.com/mcp/jp (streamable-http) |
|---|---|
| Registry version | 1.0.0 |
| Now | 16 tools · grade D (51) · pin ts_c46e1428561e9a332f0a3d39b7a4b429 · protocol 2025-06-18 |
| First / last listed | 2026-10-24 21:33 UTC / 2026-10-24 21:33 UTC |
| Grade over time | 2026-10-24: D (51), 16 tools |
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Tools: get_catalog get_receipt get_sample jp_company_profile jp_payroll_net jp_bonus_net jp_social_insurance jp_dependent_threshold jp_consumption_tax jp_business_days jp_overtime_wage jp_retirement_tax jp_mortgage jp_payslip_audit jp_crypto_tax jp_payroll_suite
get_catalog | Mart402 product catalog: all products, prices, payment config, error codes, rate limits. Free. params: none |
get_receipt | Re-fetch a previously paid result for free by receipt id (every paid response carries receipt_id). params: receipt_id* |
get_sample | Free recorded sample response for a paid product (from real production runs, marked sample:true) - see the exact response shape before paying anything. Available: document-pipeline, enrich, extract, jp-bonus-net, jp-business-days, jp-company, jp-consumption-tax, jp-crypto-tax, jp-dependent-threshold, jp-mortgage, jp-overtime-wage, jp-payroll-net, jp-payroll-suite, jp-payslip-audit, jp-retirement-t params: product* |
jp_company_profile | Japanese company site to a standard profile JSON (name, address, representative, capital, contact). $0.03/site. Choose this when you have the URL of a Japanese company's OWN site and want its standard profile fields read from the page; for name/domain lookups use enrich_company (country_hint: jp). params: url*, x_payment |
jp_payroll_net | Annual gross salary to net take-home (social insurance + income tax + resident tax). Exact NTA Beppyo-5 table. $0.02/call. Deterministic, cites primary sources; errors and unverified rules are never billed. Choose this for a whole YEAR: annual gross salary to annual take-home after social insurance, income tax and resident tax. For one bonus use jp_bonus_net; for one month's premiums only use jp_s params: annual_gross_yen*, prefecture*, age, annual_bonus_yen, dependents, year, as_of, x_payment |
jp_bonus_net | Bonus net pay: social insurance and withholding tax (official rate table, based on previous month salary). $0.01/call. Deterministic, cites primary sources; errors and unverified rules are never billed. Choose this for ONE bonus payment: its social insurance and withholding tax (the tax rate depends on the previous month's salary after social insurance). For annual totals use jp_payroll_net. params: bonus_yen*, prefecture*, age, previous_month_after_si_yen, dependents, ytd_bonus_yen, as_of, x_payment |
jp_social_insurance | Monthly social insurance premiums from the official Kyokai-Kenpo grade table (FY2026). $0.01/call. Deterministic, cites primary sources; errors and unverified rules are never billed. Choose this when you only need the monthly social insurance premiums for a given monthly remuneration (official grade table); no tax is computed - for take-home pay use jp_payroll_net. params: monthly_remuneration_yen*, prefecture*, age, as_of, x_payment |
jp_dependent_threshold | Income-wall analysis: tax, social insurance (1.06M/1.30M), spousal and student-dependent walls. $0.02/call. Deterministic, cites primary sources; errors and unverified rules are never billed. Choose this for 'how much can be earned before ...' questions: it locates the income walls (tax, social insurance, spousal, student dependent) for an annual income. It does not compute take-home pay (use jp_p params: annual_income_yen*, year, as_of, x_payment |
jp_consumption_tax | Consumption tax: per-rate invoice rounding, qualified-invoice validation, simplified taxation, 20% special. $0.01/call. Deterministic, cites primary sources; errors and unverified rules are never billed. Required by mode (default invoice_totals): invoice_totals -> lines; validate_invoice -> document; simplified -> taxable_sales_excl_yen, category; two_percent -> taxable_sales_excl_yen, taxable_per params: mode, lines, document, taxable_sales_excl_yen, category, taxable_period_start, taxable_period_end, as_of, x_payment |
jp_business_days | Japanese holidays, business-day arithmetic, statutory filing deadlines with holiday shift, wareki conversion. $0.003/call. Deterministic, cites primary sources; errors and unverified rules are never billed. Required by mode (default add): add -> from, days; between -> from, to; holidays -> year; deadline -> kind, base_date; wareki -> date. params: mode, from, to, days, year, date, kind, base_date, saturday_off, x_payment |
jp_overtime_wage | Overtime premium pay (Labor Standards Act Art.37, official rounding notice) and Article-36 limit check. $0.015/call. Deterministic, cites primary sources; errors and unverified rules are never billed. Required by mode (default pay): pay -> monthly_salary_yen, monthly_scheduled_hours, hours; check36 -> monthly_overtime_hours. params: mode, monthly_salary_yen, monthly_scheduled_hours, hours, monthly_overtime_hours, x_payment |
jp_retirement_tax | Retirement income tax: deduction by years of service, half-taxation rules, exact withholding rounding. $0.02/call. Deterministic, cites primary sources; errors and unverified rules are never billed. params: payout_yen*, years_of_service*, is_officer, disability, x_payment |
jp_mortgage | Mortgage schedules (level payment/principal), total interest, prepayment effect. $0.005/call. Deterministic, cites primary sources; errors and unverified rules are never billed. params: principal_yen*, annual_rate*, months*, method, prepayment, x_payment |
jp_payslip_audit | Audit a Japanese payslip: recompute statutory premiums and withholding tax from official tables and diff against the actual amounts, with per-item verdicts (match/explainable/mismatch). $0.02/call. Deterministic, cites primary sources; errors and unverified rules are never billed. Choose this when you HAVE an actual payslip and want each deduction checked against the official tables (match/explain params: prefecture*, age, standard_monthly_yen, as_of, payslip*, x_payment |
jp_crypto_tax | Japan crypto-asset tax: realized income under the NTA total-average or moving-average method (sell/spend/exchange as disposals, fees deductible), verified against the official NTA FAQ examples. $0.05/call. Deterministic, cites primary sources; errors and unverified rules are never billed. params: method, transactions*, opening, other_taxable_income_yen, year, as_of, x_payment |
jp_payroll_suite | Japan payroll suite: net salary + social insurance + income walls (+bonus) in one call. Flat $0.05. Choose this when you want take-home pay, social insurance and the income walls (and the bonus, if given) together from one annual figure in one call; if you only need the take-home amount, jp_payroll_net is cheaper. params: annual_gross_yen*, prefecture*, age, annual_bonus_yen, previous_month_after_si_yen, dependents, x_payment |
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