TDS Calculator not working? Here's how to fix it
Most issues with the TDS Calculator are small and fixable in seconds. Work through these in order.
1. The tool won't load
Reload the page, or open it in a fresh tab. If an extension blocks scripts, try private (incognito) mode — the calculator needs JavaScript, which is on by default in every modern browser.
2. The monthly TDS looks too high
Check that you entered your gross annual salary, not your take-home. Take-home already has deductions and TDS removed, so using it understates the figure your employer computes TDS on. Enter gross salary and redo the calculation.
3. The old regime result looks too high
The old regime has higher slab rates and only wins when you claim enough deductions. Make sure you entered 80C, 80D, HRA, and the standard deduction; without them the old regime can look expensive.
4. The TDS does not match your payslip
Employers compute TDS based on the regime you declared and often include year-end factors like bonuses or arrears. If your payslip shows a different monthly deduction, compare the salary basis, the regime, and the deductions. The calculator gives a standard estimate for FY 2026-27.
5. The numbers do not update
Refresh the page to reset the state. A stale tab or a lingering extension can cause inputs to hitch; a clean reload usually fixes it.
Verdict
Nine out of ten issues with the TDS Calculator are solved by entering gross salary, confirming the regime, and claiming all eligible deductions.