Consumer Welfare Fund under GST to receive state tax receipts and be managed by a Standing Committee for grants and investments. Amendments revise refund computation for inverted duty structures by prescribing a formula that deducts turnover-weighted Net ITC and tax payable, defines Net ITC and cross-refers Adjusted Total Turnover; establish a Consumer Welfare Fund to receive specified state tax receipts and investment income, require a Standing Committee with defined powers and procedures to administer grants, audits, recoveries and investments; and amend forms and instructions including capital goods depreciation in GST ITC-03, insertion of FORM GSTR-10 as final return on cancellation, and substitution of FORM GST DRC-07 summary of order.