Japan NTA qualified-invoice input-credit transition tracker: vendor registration-number validation and 80%->50% (1 Oct 2026) non-qualified consumption-tax credit calculation
Verify Japanese qualified-invoice registration numbers (登録番号) against the NTA public publication Web-API: partner badge, input-credit check, batch lookup
Japan year-end tax adjustment (年末調整) for Odoo: dependent and insurance deductions, NTA income-tax reconciliation and gensen choshuhyo (源泉徴収票) withholding-statement generation
Japan payroll for Odoo: income-tax withholding (gensen) monthly table, social insurance on standard monthly remuneration grades, employment insurance and resident tax — own payslip model.
Japan NTA Qualified Invoice (適格請求書): registration-number validation, per-rate tax breakdown, compliant invoice fields, optional JP PINT BYOK delivery
Japan social insurance (shakai hoken): standard monthly remuneration grading, premium tables, santei (定時決定) and geppen (随時改定) procedures and bonus premiums.