A deducter can check the status of a challan on the TRACES website when the challan is either unclaimed or claimed. The challan status can be viewed using either the BIN or CIN details or by the period of payment.
Deductor can request a refund for excess TDS deposited by him via TRACES for the financial year 2007-08 onwards. An online utility is available for the Forms type 24Q, 26Q, 26QB, 26QC, 27EQ & 27Q