Mismatch In ITR Filed: The CBDT said that the purpose of this campaign is to remind and guide individuals who may not have fully disclosed their income in their ITRs to take this opportunity to file revised or belated ITRs for FY 2023-24, the last date of which is December 31. Mismatch In ITR Filed: The CBDT said that the purpose of this campaign is to remind and guide individuals who may not have fully disclosed their income in their ITRs to take this opportunity to file revised or belated ITRs for FY 2023-24, the last date of which is December 31. Zee News :Business