Debt MF vs FD Calculator India — FY 2025-26
Compare Debt Mutual Fund vs Fixed Deposit: post-tax returns (both at slab rate since Section 50AA), TDS deferral cash flow advantage, and SWP vs FD interest tax efficiency. All amounts in Indian rupees. Updated for FY 2025-26.
How to Use This Calculator
Post-Tax Comparison tab
Enter your investment amount (default: ₹10,00,000), tenure (default: 3 years), FD rate (7.25%), debt MF expected return (7.5%), and tax bracket (30%/20%/10%/5%/0%). The calculator computes FD interest with quarterly compounding vs debt MF gain with annual NAV growth, both taxed at your slab rate. It shows TDS on FD, zero TDS on debt MF, and the net amount difference.
Cash Flow Advantage tab
See exactly how much money you lose when banks deduct 10% TDS every year on your FD interest. TDS reduces your compounding base — that money can’t earn further interest. Debt MF has ZERO TDS; your entire corpus compounds until you sell. This tab quantifies the “compounding loss from TDS” in rupees, year by year.
SWP vs FD Interest tab
Compare monthly income from FD interest (100% taxable) vs SWP from debt MF (only gain portion taxable). Enter your corpus (default: ₹20,00,000) and desired monthly income (default: ₹15,000). The calculator shows how much tax you pay on FD interest vs SWP, the principal vs gain split of each SWP withdrawal (FIFO method), and remaining corpus after the tenure.
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The Formulas
FD uses quarterly compounding with annual TDS. Debt MF uses NAV growth (modeled as annual compounding). Both gains are taxed at income slab rate under current law.
FD Maturity = P × (1 + r/4)4×t
where P = principal, r = annual rate, t = tenure in years
Gross Interest = Maturity − Principal
Tax = Gross Interest × Slab Rate
TDS = 10% of interest if annual interest > ₹50,000 (₹1,00,000 for seniors)
Debt Mutual Fund — NAV Growth:
MF Maturity = P × (1 + r)t
Gain = Maturity − Principal
Tax = Gain × Slab Rate (Section 50AA, Finance Act 2023)
TDS = ₹0 (no TDS on debt mutual fund redemption)
SWP Taxation (FIFO Method):
Each SWP withdrawal = Principal Portion + Gain Portion
Gain Ratio = (Current NAV − Purchase NAV) / Current NAV
Gain Portion = Withdrawal × Gain Ratio → taxed at slab rate
Principal Portion = Withdrawal − Gain Portion → tax-free
Key tax rule (FY 2025-26):
FD interest: taxed at slab rate (5%/10%/20%/30%) + 4% cess
Debt MF gains: taxed at slab rate (Section 50AA) — no LTCG benefit, no indexation
Both are taxed identically. The difference is TDS timing and SWP structure.
The critical insight: since both FD and debt MF are taxed at the same slab rate post-2023, the comparison shifts entirely to TDS deferral (cash flow advantage) and SWP tax efficiency (only gains taxed, not principal).
Example
Priya — ₹10,00,000 for 3 years at 30% tax bracket, FY 2025-26
Priya has ₹10,00,000 to park for 3 years. She is in the 30% tax bracket and is choosing between a bank FD at 7.25% and a short-duration debt MF with expected 7.50% return.
Step 1: FD (7.25%, quarterly compounding)
Step 2: Debt MF (7.50%, annual NAV growth)
Step 3: Comparison
Key insight: The post-tax difference at similar rates is minimal (~₹2,000 on ₹10L). The real advantage of debt MF is the TDS deferral cash flow benefit (visible over 5+ years) and SWP tax efficiency for monthly income. For pure safety and guaranteed returns, FD wins. For liquidity and tax-efficient income, debt MF wins.