OLTAS -Challan Status Inquiry For Tax Payers : For Banks : To view and download CSI file for challans generated directly at www.incometax.gov.in, please login and navigate to e-Pay Tax Service -> Payment History tab -> Select date range in Filter options. Challan Status Enquiry for Tax Payers : Using this feature, tax payers can track online the ... Learn about OLTAS , its significance for tax payments, &how to inquire about OLTAS TDS Challan using CIN or TAN on the e-filing portal. Easily track TDS payments online. A brief understanding of how OLTAS can be used for making tax payments online and also on how it can be used for understanding the status of refund dues The High Power Committee under the aegis of the RBI constituted a Sub-Group on Business Processess Designing for the OLTAS , under the Chairmanship of Shri C.B. Bhave, Managing Director, NSDL, Mumbai and Chief Executive, IBA as one of its members. The Group recommended that a Single Copy Challan should be adopted for payment of taxes as recommended by Kelkar Committee for simplifying the process for the tax payer. Accordingly, Single Copy Challan has been introduced in place of 4 Copy ...