INTEREST PAYABLE CALCULATOR  |  u/s 423  |  Tax Year 2026-27 (FY 2026-27) As per Section 423 of the New Income Tax Act 2025 — interest provisions of old Section 234A Rate of Interest : 1% per month or part thereof  |  Tax base rounded down to nearest Rs. 100   Tax Year Tax Regime New Regime Old Regime  Old Regime (Optional) — Tax Year 2026-27. Rebate u/s 156: Up to Rs.12,500 if income ≤ Rs.5,00,000. Enter Net Tax Payable (after TDS/TCS, Rebate, Advance Tax) in the fields below. Due Date for Filing Return [DD/MM/YYYY] Actual Date of Filing Return [DD/MM/YYYY] (or date of assessment if no return filed) Net Tax Payable u/s 423(1) (Rs.) [Tax after Rebate, Relief, TDS/TCS & Advance Tax paid] BACK