Updated 2026-06-10

FD Returns After Tax — What You Actually Earn

Your bank says 7% interest. Your real return? Likely negative. After income tax (20-30%) and inflation (6%), most FD investors are quietly losing purchasing power every year. Here's the exact math.

FD Rate	Tax Bracket	Post-Tax Return	Inflation	Real Return
7.0%	0% (below ₹5L)	7.0%	6%	+1.0%
7.0%	5%	6.65%	6%	+0.65%
7.0%	20%	5.6%	6%	-0.4%
7.0%	30%	4.9%	6%	-1.1%
7.5%	30%	5.25%	6%	-0.75%

The Formula: How to Calculate Real FD Returns

Real Return = (FD Rate × (1 - Tax Rate)) - Inflation Rate

For a 7% FD at 30% tax bracket with 6% inflation:

Gross interest: 7%
Post-tax return: 7% × (1 - 0.30) = 4.9%
Real return: 4.9% - 6% = -1.1%

That means every ₹1,00,000 you keep in an FD loses ₹1,100 of purchasing power per year. Over 5 years, ₹5 lakhs "grows" to ₹6.19L on paper — but buys what ₹4.73L buys today.

Why Banks Never Show You This Math

Banks advertise the gross rate (7%) because it looks attractive. They never mention:

Tax is on interest, not just profits — unlike equity where LTCG has ₹1.25L exemption, FD interest is taxed from rupee one
Inflation compounds against you — 6% inflation over 5 years means prices rise 34%. Your FD needs to beat that after tax just to break even
TDS is not final tax — 10% TDS deduction doesn't mean you only owe 10%. If you're in 30% bracket, you owe an additional 20% at filing time

When FD Still Makes Sense (Despite Negative Real Returns)

Negative real return doesn't mean "never use FD." It means "don't confuse safety with growth." FDs are appropriate for:

Emergency fund — 3-6 months expenses. Liquidity and guarantee matter more than returns here.
Goals under 2 years — Down payment in 18 months? FD protects the capital from market volatility.
Retired investors needing monthly income — Guaranteed ₹X/month from interest payout FD, even if real value erodes slowly.
Parking money temporarily — Between selling one asset and buying another, FD beats savings account rate.

Better Alternatives for Each Scenario

If your goal is wealth building (3+ years), here's what beats FD after tax:

Debt Mutual Funds (3+ years) — Taxed at slab rate now (post-2023 change), but no TDS and reinvestment is tax-efficient
PPF (15 years lock-in) — 7.1% completely tax-free. Real return: 7.1% - 6% = +1.1%. Beats FD by 2.2% for 30% bracket investors
Equity SIP (7+ years) — 12-15% CAGR, LTCG taxed at 12.5% with ₹1.25L exemption. Real return: ~6-8%
Arbitrage Funds (1-3 years) — Taxed as equity (12.5% LTCG after 1 year), returns similar to FD but far better post-tax

How to Check Your Personal FD Real Return

Use our FD Calculator to input your specific bank rate, then apply this mental model:

Check your FD rate (e.g., 6.40% at SBI for 2 years)
Multiply by (1 - your tax rate). If 30% bracket: 6.40% × 0.70 = 4.48%
Subtract current inflation (CPI ~5-6% in 2026): 4.48% - 5.5% = -1.02%
If the number is negative, your FD is losing real value

Frequently Asked Questions

How much tax is deducted on FD interest?

Banks deduct TDS at 10% if your annual FD interest exceeds ₹50,000 (₹1,00,000 for senior citizens). But your actual tax liability depends on your income tax slab — you may owe 20% or 30% total tax on FD interest. TDS is just an advance collection, not your final tax.

Is FD interest taxed every year or at maturity?

FD interest is taxable every year on accrual basis, even if you chose cumulative FD. You must declare accrued interest in your ITR each year, not just at maturity. Many people miss this and get tax notices.

What is the real return on FD after tax and inflation?

For a 7% FD in the 30% tax bracket with 6% inflation: Post-tax return = 7% × (1 - 0.30) = 4.9%. Real return = 4.9% - 6% = -1.1%. You are losing purchasing power every year. Even in the 20% bracket: 5.6% - 6% = -0.4% real return.

Should I still invest in FD if real returns are negative?

FDs still serve a purpose: emergency fund parking (6 months expenses), short-term goals under 2 years, and capital preservation for retirees who need guaranteed income. The mistake is treating FD as a wealth-building tool — it is a safety tool.

How can I reduce tax on FD interest?

Strategies: (1) Invest in 5-year Tax Saver FD for Section 80C deduction up to ₹1.5L, (2) Split FDs across family members in lower tax brackets, (3) Keep total interest under ₹50K per bank to avoid TDS, (4) Consider Debt Mutual Funds for better tax efficiency on 3+ year holdings, (5) Senior citizens get ₹50K exemption under Section 80TTB.

Try it yourself → FD Calculator