{"country":"es","currency":"EUR","name":"Spain","taxYear":2025,"taxYearPeriod":"January - December 2025","description":"Spanish IRPF (Income Tax), Autonomo Social Security (RETA) Calculator","parameters":{"income":{"type":"number","required":true,"description":"Annual gross income EUR"},"incomePeriod":{"type":"string","default":"yearly","options":["monthly","yearly"]},"expenses":{"type":"number","default":0,"description":"Annual deductible business expenses EUR"},"newAutonomo":{"type":"boolean","default":false,"description":"New autonomo (tarifa plana SS + 20% IRPF reduction)"},"vatRegistered":{"type":"boolean","default":false,"description":"IVA registered (21%)"},"weeklyHours":{"type":"number","default":40,"description":"Weekly working hours"},"paidDaysOff":{"type":"number","default":22,"description":"Annual leave days"}},"example":"/v1/calculate/es?income=40000"}