There is a persistent myth in Indian middle-class households that FD interest is “not really taxed” because the bank only deducts 10% TDS. The reality is far harsher. Your FD interest is added to your total income and taxed at your marginal slab rate , which for a ₹15L+ salaried employee is 20–30%. The 10% TDS is just an advance. You owe the rest at ITR time. And if you never declared it, the Income Tax Department already knows, because banks report your interest income directly to the AIS database every year.
1. How FD and RD Interest Is Actually Taxed in India
Interest earned on Fixed Deposits and Recurring Deposits is classified under “Income from Other Sources” under Section 56 of the Income Tax Act. It is added directly to your gross total income and taxed at your applicable slab rate. There is no separate, lower rate for FD/RD interest. No basic exemption applies specifically to it. No special holding period reduces the rate (unlike equity gains). Every rupee of FD or RD interest you earn is treated identically to every rupee of salary for tax calculation purposes.
This has two critical implications that most depositors miss. First, your effective tax on FD interest is not the 10% TDS the bank deducted. It is your marginal slab rate , which is the rate applicable to the last rupee of your income. If your taxable salary already pushes you into the 30% slab, every rupee of FD interest is taxed at 30%, plus 4% health and education cess, for an effective rate of 31.2%. Second, if the bank did not deduct TDS (because your FD interest at that bank was below ₹40,000), the interest is still taxable. The absence of TDS does not mean absence of tax liability.
2. The Shocking Post-Tax Returns: What Your FD Actually Earns
This is the number most FD investors never calculate. Once you factor in the actual tax at your slab rate and then subtract inflation, the real return on an FD for a salaried Indian in the 20–30% bracket is near zero or negative.
(7% × 0.95 = 6.65%)
Real return at 6% inflation: +0.65%
(7% × 0.80 = 5.6%)
Real return at 6% inflation: −0.4%
(7% × 0.688 = 4.87%)
Real return at 6% inflation: −1.13%
The 30% slab investor earning 7% on an FD is losing purchasing power at 1.13% per year after tax and inflation. Over 10 years, ₹10L in FD at 7% grows to approximately ₹19.67L nominally. After 30% tax on interest each year, the actual corpus is approximately ₹16.8L. After 6% inflation, the real value of ₹16.8L in today’s rupees is approximately ₹9.3L , less than you started with. This is the core argument that FDs fail against inflation for investors in high tax brackets.
| FD Rate | Tax Slab | Tax Rate (incl. cess) | Post-Tax Return | At 6% Inflation | At 5% Inflation |
|---|---|---|---|---|---|
| 7.0% | 0% (new regime, ₹12L threshold) | 0% | 7.0% | +1.0% | +2.0% |
| 7.0% | 5% | 5.2% | 6.64% | +0.64% | +1.64% |
| 7.0% | 10% | 10.4% | 6.27% | +0.27% | +1.27% |
| 7.0% | 20% | 20.8% | 5.54% | −0.46% | +0.54% |
| 7.0% | 30% | 31.2% | 4.82% | −1.18% | −0.18% |
| 8.5% (small finance bank) | 30% | 31.2% | 5.85% | −0.15% | +0.85% |
*Post-tax return = FD rate × (1 − effective tax rate including 4% cess). Real return = post-tax return minus inflation. At 6% inflation, even an 8.5% small finance bank FD delivers barely positive real returns for a 30% slab investor , and with meaningfully higher credit risk than a large bank FD. The post-tax real return on any FD rate and slab combination can be computed with the Real Return Calculator.
3. TDS Rules on FD and RD Interest: Thresholds, Rates, and Banks
Tax Deducted at Source is the mechanism by which banks collect advance tax on your FD interest. Understanding how TDS works is essential for cash flow planning and for knowing when you need to take action to prevent over-deduction.
TDS Thresholds (FY 2025-26 / FY 2026-27)
| Depositor Category | Institution Type | TDS Threshold/yr | TDS Rate (with PAN) | TDS Rate (no PAN) |
|---|---|---|---|---|
| Regular citizens (below 60) | Banks & Post Office | ₹40,000 | 10% | 20% |
| Senior citizens (60+) | Banks & Post Office | ₹1,00,000 | 10% | 20% |
| Regular citizens | NBFCs (company FDs) | ₹10,000 | 10% | 20% |
| Senior citizens | NBFCs | ₹10,000 | 10% | 20% |
How TDS Is Calculated Per Bank
The TDS threshold applies per bank, per financial year, not across all your FDs. This is one of the most commonly misunderstood rules. If you have FDs across three banks generating ₹35,000 interest each (total ₹1,05,000), no individual bank triggers the ₹40,000 threshold, so none of the three banks deducts TDS. However, your total FD interest of ₹1,05,000 is still fully taxable and must be declared in your ITR. The absence of TDS means you must self-compute and pay any tax due via advance tax or self-assessment tax.
4. Form 121: The New Unified TDS Declaration from April 2026
Who Can Submit Form 121
- Any resident individual whose total estimated income for the financial year is below the taxable limit. Under the new tax regime with the 87A rebate, this effectively means total income below ₹12 lakh. Under the old regime, it means total income below ₹2.5 lakh (or ₹3 lakh for senior citizens, ₹5 lakh for super senior citizens)
- The interest income from all sources (FD, RD, savings account, etc.) must be estimated to fall within these limits when combined with all other income
- Form 121 must be submitted before the interest is credited for the year, ideally in April at the start of the financial year
- It must be submitted separately to each bank where you hold FDs or RDs
Critical Warning: Form 121 Does Not Make Interest Tax-Free
This is the most important point. Submitting Form 121 prevents TDS deduction. It does not make your FD interest tax-exempt. If you later find that your total income (including FD interest, freelancing income, or capital gains) exceeds the taxable limit, you owe the full tax at your slab rate, even though no TDS was deducted. Submitting Form 121 with incorrect income estimates is treated as providing false information to the bank and can attract penalties. Submit Form 121 only if you are genuinely confident your total income will remain below the taxable limit for the full financial year.
5. TDS is Not Your Final Tax: The Advance Payment Misconception
A very large number of salaried Indians believe that if the bank deducted 10% TDS on their FD interest, their tax obligation is complete. This is incorrect. TDS is an advance payment of tax made by the bank on your behalf. Your actual tax liability is determined when you file your ITR, based on your total income from all sources.
If your marginal slab rate is 30% and the bank deducted 10% TDS, you owe an additional 21.2% (the remaining 20% slab difference plus cess) on the FD interest in your ITR. This amount must be paid as self-assessment tax before filing. If you do not pay, the IT Department will assess it with interest under Section 234B and 234C. Conversely, if your total income falls below the taxable limit (perhaps because you changed jobs and had a gap year), the 10% TDS deducted becomes a refund that you claim in your ITR.
6. The Cumulative FD Accrual Trap: Tax Before You Receive Money
Cumulative FDs (re-investment FDs) are the most popular type: you deposit money, let it compound, and receive the full corpus including interest at maturity. The trap is in the tax timing. For a 3-year cumulative FD, the interest accruing in Year 1, Year 2, and Year 3 is each taxable in the respective year on an accrual basis, not at maturity.
This means if you have a 5-year cumulative FD at 7% on ₹5L, you must declare and pay tax on the interest accrued each year, even though you physically receive no money until the FD matures in Year 5. Most depositors only discover this at maturity when they declare the full interest and then realize they should have been declaring it annually. The penalty for under-reporting across 5 years can be substantial. The correct approach is to get an interest certificate from your bank at the end of each financial year and declare the accrued interest.
7. RD Interest: Identical Tax Treatment, Different Accrual Pattern
Recurring Deposit interest follows the same tax rules as FD interest: fully taxable at slab rate under “Income from Other Sources,” TDS at 10% above ₹40,000 annual interest threshold per bank, and accrual-basis taxation. The slight difference is in how interest accrues: since RD instalments are deposited monthly, each instalment earns interest from its deposit date, and the total interest accrued across all instalments is taxable each financial year.
For most RD investors, the annual interest amount is modest (a ₹5,000/month RD at 7% generates approximately ₹12,900 in interest in the first year, growing to ₹20,800 in the final year), keeping the TDS threshold of ₹40,000 at bay for smaller deposits. But for RDs above ₹25,000/month or RDs with 3+ years of deposits, the accrued interest can exceed ₹40,000 per year and trigger TDS. Your RD maturity and interest computation can be verified with the RD Calculator to estimate whether TDS will apply.
8. Five Legal Strategies to Reduce FD and RD Tax
The ₹40,000 TDS threshold applies per bank. By distributing your FD investments across 3–4 banks such that each earns less than ₹40,000 in annual interest, you prevent TDS from being deducted at source. Example: ₹5L FD at 7% earns ₹35,000/year in interest , below the threshold. Three banks each with ₹5L means ₹1,05,000 total interest with zero TDS deducted. Important: your full ₹1,05,000 remains taxable at your slab rate. This strategy improves your cash flow (no advance TDS to reclaim) but does not reduce actual tax liability.
If your spouse or parents are in a lower tax slab (0% or 5%), opening FDs in their name means the interest is taxed at their lower rate, not yours. A retired parent with only ₹3–5L annual income from pension effectively pays 0–5% tax on FD interest, versus your 30%. Critical clubbing rule: If you transfer your own money to your spouse and they invest it in an FD, the income is clubbed back to your income under Section 64 of the Income Tax Act. The FD must be funded from your spouse’s own independent income. FD in parents’ name from gifted money is generally not clubbed (since the clubbing provision for parents is narrower), but consult a CA to confirm your specific structure is compliant.
If you have a large lump sum to invest in FDs, booking multiple FDs with staggered start dates or tenures distributes the interest income across different financial years. A ₹20L lump sum in a single 3-year cumulative FD generates approximately ₹1.4L, ₹1.5L, and ₹1.6L in interest in Years 1, 2, and 3 respectively. If instead you split it into two ₹10L FDs with 1-year offset start dates, the interest is never fully concentrated in a single year. This is useful in years where your other income fluctuates , particularly retirement transition years or sabbaticals when your tax slab drops.
If your total annual income genuinely falls below the taxable limit (₹12L under new regime or ₹2.5L under old regime), submit Form 121 to each bank at the start of the financial year to prevent TDS deduction. This is the clearest cash flow improvement for individuals whose FD interest is their primary income source and whose total income remains below the threshold. Submit before April 5 to ensure no TDS is deducted from the first quarter’s interest payment. Remember: this prevents TDS, not the underlying tax liability if your income later exceeds the limit.
Arbitrage funds invest in simultaneous buy-sell positions in equity markets and are classified as equity funds for tax purposes. Their returns (typically 6.5–7.5% CAGR) are similar to short-term FD rates, but gains held for more than 1 year are taxed as Long-Term Capital Gains (LTCG) at 12.5% on gains above ₹1.25L , not at your 20–30% slab rate. For a 30% slab investor, shifting 6 months’ expenses worth of capital from FD to an arbitrage fund saves approximately 18.7% in tax on that portion’s returns (30% slab minus 12.5% LTCG, adjusted for cess). The trade-off: arbitrage fund returns are not guaranteed and the 1-year lock-in reduces liquidity. Suitable for money parked for 12+ months that was otherwise going into a 1-year FD.
9. Section 80TTB: The Senior Citizen FD Interest Deduction
Senior citizens (age 60 and above) have a significant advantage in FD taxation under the old tax regime: Section 80TTB allows a deduction of up to ₹50,000 per financial year on interest income from savings accounts, fixed deposits, and recurring deposits with banks, post offices, or cooperative banks. This effectively makes the first ₹50,000 of FD/RD/savings interest tax-free for senior citizens in the old regime.
| Feature | Section 80TTB (Senior Citizens) | Section 80TTA (Below 60) |
|---|---|---|
| Who can claim | Senior citizens (60+) | Individuals below 60 |
| Maximum deduction | ₹50,000/year | ₹10,000/year (savings account interest only) |
| FD interest covered | Yes | No (savings account only) |
| RD interest covered | Yes | No |
| Tax regime | Old regime only | Old regime only |
| TDS threshold (banks) | ₹1,00,000/year | ₹40,000/year |
For a senior citizen with ₹10L in FDs at 7.5% earning ₹75,000 in annual interest: Section 80TTB deduction = ₹50,000. Taxable interest = ₹25,000. At a 5% slab, actual tax = ₹1,300. Without 80TTB, the full ₹75,000 would be taxable. The combined benefit of the higher TDS threshold (₹1L), the 80TTB deduction, and the higher basic exemption for senior citizens makes FDs significantly more tax-efficient for retirees than for working salaried individuals. Section 80TTB is not available under the new tax regime, so senior citizens must run a careful comparison between both regimes before choosing.
10. Tax-Saving FD (Section 80C): When It Makes Sense
A Tax-Saving Fixed Deposit is a 5-year FD available at most banks that qualifies for Section 80C deduction up to ₹1.5L per financial year under the old tax regime. The principal investment reduces your taxable income, but the interest earned is fully taxable at your slab rate each year. The key trade-off versus regular FDs:
- Advantage: The 80C deduction at the time of investment generates tax saving of ₹7,500–₹46,800 (depending on slab) on the ₹1.5L invested
- Disadvantage: 5-year lock-in with no premature withdrawal allowed under any circumstances. The interest is taxable annually at your slab rate, exactly like a regular FD
- Comparison with ELSS: ELSS (Equity-Linked Savings Scheme) SIP also qualifies for 80C with only a 3-year lock-in and historically higher returns, taxed at 12.5% LTCG (on gains above ₹1.25L). For a 30% slab investor, ELSS via SIP is almost always superior to tax-saving FD when the goal is 80C utilization under old regime
Tax-saving FD is best suited for: very conservative investors who want guaranteed returns for their 80C allocation, investors close to retirement who cannot tolerate equity volatility, or those who have already maxed out EPF and PPF and want to exhaust the ₹1.5L 80C limit with a guaranteed instrument. The post-tax maturity value of a 5-year FD can be computed with the FD Calculator.
11. Arbitrage Funds: The Tax-Efficient FD Alternative
Arbitrage funds simultaneously buy equity in the cash market and sell futures in the derivatives market, capturing the price difference (arbitrage spread) as returns. They carry near-zero market risk (their position is hedged) but are classified as equity funds by SEBI for regulatory purposes. This classification is the key advantage for tax-efficient parking of short-to-medium-term surplus.
| Comparison Point | FD (1 Year) | Arbitrage Fund (1+ Year) |
|---|---|---|
| Typical return | 6.5–7.5% | 6.5–7.5% (similar) |
| Capital safety | Guaranteed (DICGC) | Near-zero risk (not guaranteed) |
| Tax (30% slab, held 1+ yr) | 30%+ cess = 31.2% | LTCG 12.5% (on gains >₹1.25L) |
| Effective post-tax return (30% slab) | ~4.9% | ~6.0–6.5% |
| Liquidity | Penalty on premature break | T+1 or T+2 redemption (no lock-in) |
| Minimum holding for lower tax | Not applicable | 12 months (for LTCG vs STCG) |
| Best suited for | Capital safety, guaranteed returns | Tax-efficient parking for 12+ months (30% slab) |
*Arbitrage fund returns are not guaranteed and can dip in periods of low volatility when spreads compress. They are not suitable for emergency funds or very short-term (under 3 months) parking where even small NAV fluctuations are unacceptable. Also see the detailed arbitrage funds vs FD comparison in our Learn section for historical return data and risk analysis.
12. How to Correctly Report FD and RD Interest in Your ITR
This section covers the mechanical steps most salaried FD investors get wrong, leading to notices or missed tax credits.
Step 1: Collect Interest Certificates from All Banks
Before filing your ITR, request an interest certificate (annual accrued interest statement) from every bank where you hold FDs or RDs. This shows interest accrued for the financial year, which is different from interest received or paid out. For cumulative FDs, the certificate shows the interest credited to the FD (increasing your principal) but not yet paid out to you in cash.
Step 2: Download Form 26AS and AIS
Log into the income tax portal (incometax.gov.in) and download your Form 26AS (TDS credits) and AIS (Annual Information Statement). The AIS lists all interest income reported by banks to the IT Department under your PAN. Compare this against your bank certificates. If there are discrepancies, contact the bank to get them corrected before filing.
Step 3: Report in Schedule OS (Other Sources)
In your ITR form, go to Schedule OS (Income from Other Sources). Enter your total FD interest income (including accrued interest from cumulative FDs, even if not yet received). This gets added to your gross total income and taxed at your slab rate. Claim the TDS credit from Schedule TDS (which should auto-populate from Form 26AS).
Step 4: Senior Citizens Claim 80TTB in Schedule VI-A
If you are 60 years or above and using the old regime, claim your Section 80TTB deduction (up to ₹50,000) in Schedule VI-A of the ITR. This reduces your taxable income by up to ₹50,000 specifically for interest income from banks and post offices.
13. NBFC Fixed Deposits: The Lower Threshold Trap
Non-Banking Financial Companies (NBFCs) like Bajaj Finance, Shriram Finance, and others offer FDs with rates often 0.5–1.5% higher than equivalent bank FDs. These are popular for chasing yield. The critical tax difference: the TDS threshold for NBFC FDs is only ₹10,000 per year per NBFC, versus ₹40,000 for bank FDs. This means even a modest ₹1.5–2L NBFC FD at 8% interest triggers TDS from year one.
The higher rate comes with two compounding disadvantages: the lower TDS threshold means TDS is deducted earlier and more aggressively, and NBFC FDs are not covered by DICGC insurance (unlike bank FDs which are insured up to ₹5L per depositor per bank). The extra 1% in interest at 30% effective tax is worth only 0.69% post-tax, while the credit risk is meaningfully higher. Before choosing an NBFC FD purely on rate, factor in both the tax and the credit risk. The effective post-tax return for any FD rate and tax slab can be modelled with the FD Calculator.
See Your FD’s Real Post-Tax Return
Enter your FD rate, amount, tenure, and tax slab. Get the exact maturity value after tax , and compare it against a comparable RD or liquid fund.
Open FD CalculatorFrequently Asked Questions
Yes. Interest earned on Fixed Deposits is fully taxable in India under the head “Income from Other Sources.” It is added to your total income and taxed at your applicable income tax slab rate. This applies to both cumulative and non-cumulative FDs, bank and NBFC FDs, and whether or not TDS has been deducted. FD interest must be declared in your ITR every year on an accrual basis , even for cumulative FDs where you have not received the interest in cash. There is no special exemption for FD interest under either the old or new tax regime.
For FY 2025-26 and FY 2026-27, banks deduct TDS at 10% (with PAN) when your total FD interest from that bank exceeds ₹40,000 in a financial year. For senior citizens (60 years and above), the TDS threshold is ₹1,00,000 per financial year per bank. For NBFC fixed deposits, the TDS threshold is much lower at ₹10,000 per financial year. The TDS rate is 10% if your PAN is registered with the bank and 20% if PAN is not provided. The threshold applies per bank separately, so FDs split across multiple banks may each fall below the threshold individually, but the total interest from all banks remains fully taxable.
Yes. From April 1, 2026, Form 121 is the new unified self-declaration form under Income Tax Rules 2026 that replaces Form 15G (for individuals below 60 years) and Form 15H (for senior citizens). It is submitted to your bank to prevent TDS deduction on FD or RD interest, provided your total estimated income for the year is below the taxable limit. Submitting Form 121 does not make your FD interest tax-free , it only prevents the bank from deducting TDS in advance. You must still declare the interest income in your ITR. If your actual total income later exceeds the taxable limit, tax will be due at filing with interest.
Yes, RD (Recurring Deposit) interest is treated exactly like FD interest for tax purposes. It is fully taxable under “Income from Other Sources” at your applicable income tax slab rate. RD interest accrues each year and is taxable on an accrual basis, meaning even if the RD has not matured and you have not received the interest, the portion accrued each financial year must be declared in your ITR for that year. Banks deduct TDS on RD interest when the total annual interest across all RDs at that bank exceeds ₹40,000 (₹10,000 for NBFC RDs). The annual interest accrual from your RD can be estimated using the RD Calculator.
Section 80TTB is a deduction available exclusively to senior citizens (age 60 and above) under the old tax regime. It allows a deduction of up to ₹50,000 per financial year on interest income earned from savings accounts, fixed deposits, and recurring deposits with banks, post offices, or cooperative banks. This effectively makes the first ₹50,000 of FD/RD interest tax-free for senior citizens in the old regime. Section 80TTB is not available under the new tax regime. For individuals below 60, Section 80TTA provides a smaller deduction of up to ₹10,000 but only on savings account interest, not FD or RD interest.
Yes, legally and within the tax rules. The TDS threshold of ₹40,000 per year applies per bank separately. So if you split your FD investment across three banks such that each generates less than ₹40,000 in annual interest, none of the banks will deduct TDS. However, your total FD interest from all banks is still fully taxable and must be declared in your ITR. The strategy avoids TDS deduction, saving you the paperwork of claiming TDS credit, but does not reduce your actual tax liability. It is purely a cash flow management technique, not a tax saving one.
FD interest must be reported under Schedule OS (Income from Other Sources) in your ITR. For cumulative FDs, interest accrues annually and must be reported each year on an accrual basis, not just in the year of maturity. Your bank provides Form 16A (TDS certificate) for any TDS deducted, and you can verify TDS details in your Form 26AS or AIS on the income tax portal. Failure to report FD interest income can result in an income tax notice, since the IT Department receives annual interest data directly from banks via the AIS system. Even if you submitted Form 121 and no TDS was deducted, you must still report the interest in your ITR.