{"ok":true,"result":{"tool":"gst-rcm-calculator","domain":"india-specific","version":"1.0.0","name":"GST Reverse Charge (RCM) Calculator","description":"Compute the GST liability under the Reverse Charge Mechanism — the supplier doesn't collect tax, the recipient self-assesses it. Splits CGST/SGST or IGST, and flags Input Tax Credit eligibility.","standard":"CGST Act §9(3) / IGST Act §5(3)","inputs":[{"key":"base_amount_inr","label":"Invoice Amount","required":true,"unit":"₹","type":"number","min":1,"max":100000000,"step":100,"default":10000},{"key":"gst_rate_pct","label":"GST Rate","type":"enum","options":["0","5","12","18","28"],"default":"18"},{"key":"transaction_type","label":"Supply Type","help":"Intra-state → CGST + SGST. Inter-state → IGST.","type":"enum","options":["intra_state","inter_state"],"default":"intra_state"},{"key":"itc_eligible","label":"ITC Eligible","help":"Most business-use supplies are eligible. Common ineligibles: motor vehicles for personal use, food & beverages, club memberships.","type":"boolean","default":true}],"outputs":[{"key":"gst_rate_pct","label":"GST Rate","type":"number","unit":"%","precision":0},{"key":"cgst_inr","label":"CGST","type":"number","unit":"₹","precision":2},{"key":"sgst_inr","label":"SGST","type":"number","unit":"₹","precision":2},{"key":"igst_inr","label":"IGST","type":"number","unit":"₹","precision":2},{"key":"total_tax_inr","label":"Total Tax (to deposit)","type":"number","unit":"₹","precision":2},{"key":"itc_amount_inr","label":"Input Tax Credit","type":"number","unit":"₹","precision":2},{"key":"net_cost_inr","label":"Net Cost to Business","type":"number","unit":"₹","precision":2},{"key":"compliance_note","label":"Note","type":"string"}],"endpoint":"/v1/india-specific/gst-rcm-calculator"},"meta":{"request_id":"req_5zrvQFo5hbA"}}