The Central Board of Direct Taxes (CBDT) has stepped up its data-driven push to curb bogus tax deduction claims, warning taxpayers to correct wrong filings after uncovering widespread misuse of donation-based exemptions, according to a Ministry of Finance release issued on Saturday. The tax authority recently acted against several intermediaries who filed income tax returns with false claims of deductions and exemptions. CBDT found that several RUPPs were either non-filers, non-operational at their listed addresses, or not involved in any political activity. CBDT has strengthened its data-based monitoring to detect suspicious claims early and identify high-risk behaviour patterns.