Thermodynamic Automaton Computer
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Founder, TWIST POOL Labs · TAC Research · NanoCERN Unit, Pune
First-principles finance educator · 10+ years in Indian capital markets
FDs and RDs are India's favourite capital-safe instruments. Together they hold trillions of rupees of Indian household savings. But they serve different purposes — and choosing the wrong one for your goal costs money.…
FDs and RDs are India's favourite capital-safe instruments. Together they hold trillions of rupees of Indian household savings. But they serve different purposes — and choosing the wrong one for your goal costs money.
1. FD (Fixed Deposit) — The Lump Sum Locked Vehicle
What it is: You deposit a lump sum for a fixed tenure. The bank pays interest at a pre-agreed rate throughout the tenure.
Key features:
- Minimum amount: Varies — ₹1,000 (SBI) to ₹10,000 (private banks)
- Tenure: 7 days to 10 years
- Interest rate: 4–8% per annum (varies by tenure and bank)
- Interest payment: Monthly, quarterly, or on maturity (cumulative FD)
- TDS: 10% TDS if total interest from all FDs with one bank exceeds ₹40,000/year (₹50,000 for senior citizens)
- Premature withdrawal: Allowed, with 0.5–1% penalty on the applicable rate
Senior Citizen benefit: Banks offer 0.25–0.75% additional interest to customers aged 60+. SBI currently offers 0.5% extra.
2. RD (Recurring Deposit) — The Monthly Saving Vehicle
What it is: You deposit a fixed amount every month for a pre-decided tenure. The bank pays interest on each instalment deposited.
Key features:
- Minimum amount: ₹100/month (most banks)
- Tenure: 6 months to 10 years
- Interest rate: Same as comparable FD tenure (or slightly lower at some banks)
- Interest payment: Compounded quarterly, paid at maturity
- TDS: Same rules as FD (10% on interest > ₹40,000/year)
- Premature closure: Allowed with penalty
Post Office RD: 6.7% for 5-year tenure (Q1 FY26). Government-backed, safe for all investors.
3. FD vs RD: The Core Difference
| Feature | FD | RD |
|---|---|---|
| Investment mode | Lump sum | Monthly SIP-style |
| Who it suits | Has surplus cash | Saving from monthly salary |
| Interest calculation | On full amount from day 1 | On increasing balance (lower effective return) |
| Flexibility | Premature withdrawal | No easy access during tenure |
| Best for | Parking windfalls, bonuses, emergency fund | Forced savings with income |
Effective return difference: An FD at 7% on ₹1,20,000 for 1 year earns ₹8,400. An RD at 7% with ₹10,000/month for 12 months (same total: ₹1,20,000) earns approximately ₹4,550 — because the first ₹10,000 was only deposited 12 months earlier and later deposits are shorter. This is the fundamental mathematical difference.
4. Tax on FD/RD Interest
Both FD and RD interest is taxed at your income slab rate. For a 30% bracket investor:
- Effective return on 7% FD: 7% × (1 − 30%) − 4% cess = ~4.88%
- After 6% inflation: Real return is approximately negative
This is why FDs are appropriate for capital preservation (short-term goals, emergency fund) but not long-term wealth building.
Submit Form 15G/15H to avoid TDS:
- Form 15G: For investors below 60 with total income below ₹2.5 lakh
- Form 15H: For senior citizens with total income below the taxable limit
Submitting the form does not eliminate the tax liability — it only prevents TDS deduction at source. You must still declare interest in ITR.
5. Better Alternatives by Goal
| Goal | Better Alternative |
|---|---|
| Emergency fund (liquid) | Liquid mutual fund (higher return, instant redemption) |
| 1-year safety | Arbitrage fund (12.5% LTCG if held > 12 months) |
| 3–5 year capital safe | RBI Floating Rate Bonds (7.35%) or debt mutual fund |
| Senior citizen income | SCSS (Senior Citizen Savings Scheme, 8.2%/year, quarterly payout) |
| Long-term (5+ years) | Equity mutual fund — FDs cannot beat inflation at this horizon |
The Smart Friend's Verdict
FDs are excellent for what they are designed for: capital preservation, short-term parking, and predictable return. They are terrible for long-term wealth building because they consistently deliver negative real returns after tax and inflation.
Use FDs for your emergency fund buffer and goals within 1–2 years. For everything else — equity, NPS, PPF — not FDs.
Next: How CIBIL Score Works — the credit score that determines your borrowing power.
Frequently Asked Questions
See the full explanation in the section above.
See the full explanation in the section above.
Both FD and RD interest is taxed at your income slab rate.
Feature
FD
RD
Investment mode
Lump sum
Monthly SIP-style
Who it suits
Has
Goal
Better Alternative
Emergency fund (liquid)
Liquid mutual fund (higher return, instant redemption)