TDS on Fixed Deposits: What Every Investor Should Know

Three years back, I opened my net banking app to check my FD maturity amount, and I genuinely thought there was some error in the bank’s system. The amount credited was almost ₹4,200 less than what I had calculated using a simple interest formula on a piece of paper.I called the bank’s customer care, got transferred twice, and finally a relationship manager calmly told me, “Sir, that’s TDS deduction on your FD interest.” I remember asking, “TDS? But I haven’t even withdrawn the money yet, this is just interest!”That conversation was my real introduction to TDS on Fixed Deposits, and honestly, it’s something most people only learn about the hard way — after the money is already gone from their account.If you’ve ever stared at your FD statement wondering why the maturity value doesn’t match your calculations, or if you’re someone who’s just starting to invest in FDs and want to avoid the same confusion I went through, this article is for you. I’m going to break this down the way I wish someone had explained it to me back then — no jargon, just real talk.

So What Exactly Is TDS on FD, and Why Does It Happen?

Let’s start with the basics, but in plain language.

TDS stands for Tax Deducted at Source. When it comes to Fixed Deposits, banks (and even post offices and NBFCs) are required by the Income Tax Department to deduct a portion of your interest income as tax, before they pay it to you.

Think of it like this — your employer deducts TDS from your salary every month and deposits it with the government on your behalf. Banks do the exact same thing, but instead of your salary, they’re deducting it from the interest your FD earns.

The catch is, most people don’t even realize this is happening because:

The interest is often credited automatically (especially in cumulative FDs)
The TDS amount gets silently adjusted before you see the final figure
Nobody really explains this when you open the FD

I learned this the hard way because my FD was a cumulative one — meaning the interest gets added to the principal and paid out only at maturity. So for years, I had no idea TDS was quietly being deducted every single year, not just at maturity.

The Threshold Limit That Confused Me for Years

Here’s something that took me embarrassingly long to understand properly.

Banks don’t deduct TDS on every rupee of interest you earn. There’s a threshold limit, and only interest above that limit attracts TDS.

As of now, here’s how it works:

For most banks, if your total interest income from FDs (across all branches of that bank, combined) crosses ₹40,000 in a financial year, TDS kicks in.

For senior citizens (60 years and above), this limit is higher — ₹50,000.

For post office deposits, similar rules apply but always double-check with your local post office since they sometimes have slightly different processes.

Now here’s the part that genuinely shocked me — this limit is calculated across ALL your FDs in that bank, not per FD. I had three separate FDs in the same bank, each earning interest below ₹40,000 individually, but when added together, the total crossed the limit. The bank still deducted TDS because they look at your total interest income from that bank as a whole.

I had assumed (wrongly) that since each FD was “small,” I was safe. Big mistake.

How Much TDS Actually Gets Deducted?

This is where things get real, and where I made my second mistake.

If your interest income crosses the threshold:

The bank deducts 10% TDS if you’ve submitted your PAN card details
If you haven’t submitted your PAN, the bank deducts a whopping 20% TDS

Yes, you read that right. Not submitting your PAN literally doubles your tax deduction.

I had a friend (I won’t name him, but let’s call him Rajesh) who opened an FD at a smaller cooperative bank years ago and never bothered to update his PAN details because “the form was too long.” When he checked his statement after a year, he was shocked to see 20% TDS deducted instead of 10%.

He lost almost ₹3,000 extra in just one year because of this one oversight. The lesson here is simple — always, always make sure your PAN is linked to your bank account and FD before you invest.

How My FD Interest and TDS Actually Played Out

Let me walk you through a real example based on my own FD, just so the numbers make sense.

I had a fixed deposit of ₹5,00,000 with an interest rate of 7% per annum, for a tenure of 3 years (cumulative FD).

Year 1:

Interest earned: ₹35,000
Since this is below ₹40,000, no TDS deducted

Year 2:

Interest earned (on the increased principal due to compounding): around ₹37,450
Still below ₹40,000, so still no TDS

Year 3:

Interest earned: around ₹40,070
This crossed the threshold, so TDS of 10% was deducted = approximately ₹4,007

This is exactly the ₹4,200-odd difference I saw in my maturity amount that day. It wasn’t a bank error — it was TDS, just applied silently in the background.

The frustrating part? I had multiple FDs with the same bank, so technically the combined interest had already crossed ₹40,000 in Year 2 itself, but the bank’s system only flagged it in Year 3 due to some internal calculation timing. This kind of inconsistency is more common than people realize, which is why checking your interest certificates regularly really matters.

TDS Doesn’t Mean You’re Paying MORE Tax — Here’s the Real Truth

This is probably the single most important thing I want you to understand from this entire article.

TDS is NOT an additional tax. It’s an advance tax collection mechanism.

When I first saw that ₹4,007 deducted, I genuinely thought, “Great, now I’ll have to pay tax again on this same interest while filing my return.” That’s completely wrong, and once I understood this properly, a lot of my anxiety around FDs disappeared.

Here’s how it actually works:

The bank deducts TDS and deposits it with the Income Tax Department under your PAN
This deducted amount shows up in your Form 26AS (and now also in AIS — Annual Information Statement)
When you file your income tax return, you declare your total FD interest income (yes, even the portion on which TDS wasn’t deducted)
You calculate your total tax liability based on your income tax slab
The TDS already deducted gets adjusted against this liability
If your total tax liability is less than the TDS deducted, you get a refund
If it’s more, you pay only the difference

So in my case, since I fall in the 20% tax bracket, and the bank had only deducted 10% TDS, I still had to pay the remaining 10% while filing my return. But if someone falls in the 0% or 5% tax bracket, they’d actually get a refund of that TDS amount.

How to Avoid TDS on FD Legally — Form 15G and Form 15H

This is the part that genuinely changed things for my parents, and I wish I had known about it earlier.

My mother is a senior citizen with no taxable income (her total income is below the basic exemption limit). Yet for two years, the bank was deducting TDS on her FD interest, and she was filing returns every year just to claim refunds — which is a hassle, especially for someone not comfortable with online filing.

That’s when I learned about Form 15G and Form 15H.

Form 15G is for individuals below 60 years of age whose total income is below the taxable limit.

Form 15H is for senior citizens (60 years and above) whose total income is below the taxable limit, even if their FD interest alone might cross ₹40,000 or ₹50,000.

Here’s the step-by-step process I followed for my mother:

Step 1: Log in to net banking (we used SBI’s portal, but most major banks like HDFC, ICICI, Axis have similar options under “Service Requests” or “e-Services”)

Step 2: Search for “Form 15H” or “Form 15G” under tax-related services

Step 3: Fill in the declaration — basically confirming that her total estimated income for the year is below the taxable limit

Step 4: Submit it online (most banks now allow this digitally, no need to visit the branch)

Step 5: Repeat this at the START of every financial year (this is crucial — these forms are valid only for one financial year, from April to March)

After submitting Form 15H, the bank stopped deducting TDS on her FD interest entirely. No more refund hassles, no more waiting for months to get her money back.

One important thing — if your income situation changes during the year and you end up becoming taxable, but you’ve already submitted Form 15G/15H, you’re technically required to inform the bank. Submitting these forms when you know your income will exceed the limit is considered furnishing a false declaration, so please be honest about this.

Mistakes People Make With FD TDS (I’ve Made Some of These Too)

Let me list out the mistakes I’ve personally made or seen others make, so you can avoid them.

1: Not linking PAN to the FD account

As I mentioned with my friend Rajesh, this doubles your TDS rate from 10% to 20%. Always verify this when opening any FD, especially with smaller banks or cooperative banks where the process isn’t always automated.

2: Forgetting to declare FD interest income while filing ITR

Some people think, “TDS has already been deducted, so I don’t need to mention this interest in my return.” This is wrong. You must declare the FULL interest income, not just the portion on which TDS was applied. The bank only deducts TDS on amounts above the threshold, but your entire interest income is taxable based on your slab.

3: Not checking Form 26AS / AIS regularly

I now make it a habit to check my Form 26AS on the Income Tax e-filing portal (incometax.gov.in) at least twice a year. This shows exactly how much TDS has been deducted by each bank, and helps avoid mismatches during return filing.

4: Assuming TDS is only deducted at maturity

For cumulative FDs, TDS is deducted EVERY YEAR based on the interest accrued (even though you haven’t received the money in hand). This caught me off guard initially because I assumed since I wasn’t “receiving” any money, there was nothing to tax yet.

5: Spreading FDs across multiple branches of the same bank thinking it avoids TDS

This doesn’t work anymore. Banks consolidate interest income across all branches under your PAN for TDS calculation purposes. I tried this with two branches years ago thinking it would help, and it made absolutely no difference.

6: Not submitting Form 15G/15H every year

These forms are NOT a one-time submission. I’ve seen people submit it once and assume it’s valid forever, only to be surprised when TDS gets deducted the following year.

What About FDs in Multiple Banks?

This is a question I get asked a lot, especially from people who like to “diversify” their FDs across SBI, HDFC, post office, and a couple of cooperative banks.

Here’s the honest truth — the ₹40,000/₹50,000 threshold applies PER BANK (or financial institution), not across your total FD holdings everywhere.

So if you have:

₹35,000 interest from Bank A
₹38,000 interest from Bank B
₹42,000 interest from Bank C

Bank C will deduct TDS (since it crosses ₹40,000), but Bank A and Bank B won’t, even though your total interest across all three banks is ₹1,15,000.

However — and this is important — even if no TDS was deducted, this entire ₹1,15,000 is still taxable income, and you must declare it while filing your return. TDS not being deducted doesn’t mean tax isn’t owed.

This is exactly why some people genuinely believe they’re “saving tax” by spreading FDs across multiple small banks, but they’re not saving anything — they’re just delaying the tax payment to the time of filing returns, and sometimes even forgetting to pay it altogether, which can lead to notices later.

A Quick Word About Senior Citizen Savings and Tax Planning

If you have elderly parents (like I do), one thing that genuinely helps is understanding Section 80TTB.

Under this section, senior citizens can claim a deduction of up to ₹50,000 on interest income from deposits (including FDs, savings accounts, and recurring deposits) from their total income, before calculating tax.

So even if a senior citizen’s FD interest crosses ₹50,000 and TDS gets deducted, if their total income (after this 80TTB deduction and other deductions) falls below the taxable limit, they’re eligible for a full refund of the TDS deducted — and submitting Form 15H in advance can prevent the deduction altogether.

For my mother, combining the 80TTB deduction with timely Form 15H submission meant she went from getting TDS refunds every year (which took 4-6 months to process) to not having any TDS deducted at all.

Practical Tools and Resources That Actually Helped Me

Over the years, here are a few things that made managing FD-related TDS much easier:

Income Tax e-filing portal (incometax.gov.in) – For checking Form 26AS and AIS statements. This shows exactly how much TDS each bank has deducted under your PAN.

Net banking portals of banks like SBI, HDFC, ICICI, Axis – Most allow online submission of Form 15G/15H, FD interest certificates, and TDS certificates (Form 16A) directly from the dashboard.

FD interest calculators – Simple Google searches for “FD interest calculator” give you tools where you can input principal, rate, and tenure to estimate interest year-wise. This helps you predict whether you’ll cross the TDS threshold.

Setting calendar reminders – I literally set a reminder on my phone for the 1st of April every year to submit Form 15G/15H for my mother’s FDs. This one habit has saved her thousands of rupees in unnecessary TDS deductions over the years.

A Few Things I Genuinely Wish Someone Had Told Me Earlier

If I could go back and talk to my younger self before opening that first FD, here’s what I’d say:

Don’t assume the maturity amount shown when you open the FD is exactly what you’ll receive — that figure usually doesn’t account for TDS.

Always submit your PAN details, even if the bank doesn’t insist on it.

If your income is below the taxable limit, don’t wait for TDS to be deducted and then claim a refund — submit Form 15G/15H proactively at the start of the financial year.

Check your Form 26AS or AIS at least once before filing your return, so there are no surprises.

Don’t think of FD interest as “tax-free” just because TDS wasn’t deducted — it’s still part of your taxable income.