New Delhi, Sept. 6 -- Many salaried professionals assume that their tax obligations are fully settled once their employer issues Form 16. However, a common portfolio component-fixed deposits-could quietly push them into non-compliance if they fail to act before the September 15 deadline, a certified financial planner highlighted.

In a LinkedIn post, certified financial planner (CFP) Ritesh Sabharwal noted that standard workplace deductions provide no blanket protection against outside earnings.

"Your employer's TDS covers your salary. It covers nothing else you earned," Sabharwal said in the viral post.

The issue, he said, stems from the gap between the bank's basic tax deduction and an investor's actual income slab.

For instance, Sab...