Form 121: 6 Things Every Taxpayer Must Know

Form 121: 6 Things Every Taxpayer Must Know

Form 121: 6 Things Every Taxpayer Must Know

If you've been submitting Form 15G or Form 15H to your bank every year to stop TDS on your FD interest — those forms don't exist anymore. From April 1, 2026, the Income Tax Department has replaced both with a single new form called Form 121, introduced under Section 393(6) of the Income Tax Act 2025 and Rule 211 of the Income Tax Rules 2026. It's a self-declaration form that tells your bank: "My total income is below the taxable limit — don't deduct TDS." Same purpose. Smarter system. Here are 6 things you need to know before you file it.

How Form 121 Replaces Both Form 15G and 15H

For years, the system forced you to pick a form based on your age. Under 60? You filed Form 15G. Senior citizen? You filed Form 15H. Two different forms doing the exact same job — it was unnecessary duplication that confused crores of taxpayers every year.

Form 121 merges both into one. Whether you're 30 or 70, there's now a single unified declaration for all eligible taxpayers. The age-based distinction is gone. The objective is identical to what it always was: if your estimated total income for the tax year is below the taxable limit, you can declare it and prevent TDS from being deducted on specified incomes like bank FD interest, post office deposits, dividends, rent, and pension.

And importantly — this isn't just a renaming exercise. The form is fully digital, pre-filled, and built with real-time validation. More on that below.

Form 121 TDS Exemption: Who Is Eligible and Who Isn't

Not everyone can file this form. The eligibility criteria are specific.

Who can file Form 121:

• Resident Individuals — both below 60 and 60 years or above (no age split anymore)
• Senior Citizens — 60 years and above, single unified form
• HUF — Hindu Undivided Families meeting the income criteria
• Other specified entities — as per CBDT guidelines under Income Tax Rules 2026

Who cannot file Form 121:

• Companies and Partnership Firms — not eligible, period
• NRIs (Non-Resident Indians) — this form is for resident individuals only

You've probably seen cases where someone filed the wrong form in the past — a senior citizen accidentally submitting 15G instead of 15H, for instance. Form 121 eliminates that confusion entirely. One form, one set of conditions, everyone covered.

The key condition across all categories: your estimated total income for the tax year — including the interest income you're trying to protect from TDS — should result in zero tax liability.

How to Submit Form 121 Online

The best time to submit Form 121 is at the start of the financial year — ideally before your bank credits any interest to your account. Once TDS is deducted, Form 121 can't reverse it. You'd have to claim that money back as a refund when you file your ITR, which is an avoidable hassle.

How to submit: Most banks now let you submit Form 121 directly through internet banking or their mobile app — no branch visit needed. You can also file it through the Income Tax Department's e-filing portal:

1. Log in to the e-filing portal with your PAN
2. Go to the "e-file" tab and select Form 121
3. Choose the correct tax year
4. Enter your personal details, estimated income, and declaration information
5. Verify using OTP, Aadhaar authentication, or net banking
6. Submit — and save the acknowledgment

One important thing: if you have FDs in multiple banks, you need to submit Form 121 separately to each bank. It's not a blanket declaration. Each payer needs their own copy.

Documents and Details You'll Need Before Filing

Keep these ready before you start:

• PAN Card — Mandatory. Without a valid PAN, your Form 121 is invalid and the bank will deduct TDS at up to 20%
• TAN of the payer — The bank or institution you're submitting to
• Income details — Estimated interest or income from the specific FD or investment
• Age proof — Especially for senior citizens, to confirm the 60+ status
• Bank account details — Account number and estimated annual income from that account

The form's pre-fill feature will auto-populate your name, address, and PAN from your tax profile — but always verify the pre-filled data before submitting.

What Happens After You Submit: UIN and Monthly Reporting

Once you submit Form 121, the bank or financial institution verifies your details. After verification, each declaration gets a UIN — Unique Identification Number. This is your proof that the declaration was accepted.

From there, the bank reports your declaration data to the Income Tax Department every month. This gives the tax department a real-time record of all TDS exemption declarations — which reduces fraud and makes the system more transparent on both sides.

One more thing worth knowing: under Rule 211(5), the payer is required to keep every Form 121 received safely for 7 years from the end of the tax year it was received. If the Income Tax Department requests records during that period, the bank must produce them. If you're a business receiving Form 121 from individuals you pay rent or commission to — keep your own copy too.

Form 121 Income Tax Rules 2026: What Makes It "Smart"

Compared to the old paper-based 15G and 15H forms, Form 121 is a significant upgrade. Here's what's different:

• Pre-filling — Your name, PAN, and address auto-populate from your income tax profile. You don't retype what the system already knows
• Real-time validation — If you enter incorrect information, the form flags it immediately — no waiting until submission to discover an error
• Dropdown selections — Dates and standard options don't need to be typed; you select them, reducing input mistakes
• Checkbox verification — Instead of a physical signature, a smart checkbox system handles declaration verification digitally

Around 1.9 crore declarations were filed under the old Form 15G and Form 15H annually across banks and financial institutions in recent years. With Form 121, that entire process is now centralised, digitised, and trackable in real time.

Form 121 isn't just a new name for an old form — it's a genuine step toward a cleaner, more transparent TDS system. If your income is below the taxable limit, filing Form 121 on time protects your money from unnecessary deductions. Don't wait until the interest is credited. Submit it at the start of the tax year, submit it to each bank separately, and keep the acknowledgment. That's really all there is to it.

Frequently Asked Questions

Q1: What is Form 121 and how is it different from Form 15G and 15H?

Form 121 is India's new unified self-declaration form that replaces both Form 15G and Form 15H from April 1, 2026. Earlier, you had to pick between two forms based purely on age — 15G under 60, 15H for senior citizens. Now there's just one form for everyone, regardless of age. The purpose stays identical: declare to your bank that your total income is below the taxable limit so they don't deduct TDS. Simpler system, same protection.

Q2: Do I need to submit Form 121 to every bank separately?

Yes — and this catches a lot of people off guard. If you have FDs in three different banks, you need to submit Form 121 to each one individually. It doesn't work as a blanket declaration. Each payer — whether it's your bank, post office, or a company paying you rent — needs their own copy. Each submission gets its own UIN, and that UIN is what the bank reports to the Income Tax Department every month.

Q3: What happens if TDS was already deducted before I submitted Form 121?

Once TDS is deducted, Form 121 can't reverse it retroactively. That money is held by the bank for the year. You'd need to claim it back as a refund when you file your ITR — which works, but it's an avoidable delay in getting your own money. This is exactly why submitting before the interest is credited matters so much. Nearly 1.9 crore declarations were filed annually under the old forms — most people who missed the timing ended up waiting months for refunds instead.

Q4: Can I file Form 121 online without visiting the bank?

Most major banks support online submission through internet banking and mobile apps — no branch visit needed. The Income Tax Department's e-filing portal also accepts it directly. Go to "e-file," select Form 121, fill in your PAN and income details, and submit using OTP or Aadhaar authentication. It's genuinely faster than the old paper process. That said, not every small cooperative bank has the digital flow fully live yet — check with your specific bank if you're unsure.

Q5: What happens if I submit Form 121 without a valid PAN?

Without a valid PAN, your Form 121 is invalid — no exceptions. The bank is then required to deduct TDS at the maximum applicable rate, which can be as high as 20% on interest income. PAN is mandatory precisely because the system tracks all declarations centrally through the UIN. If you don't have a PAN yet, that's the first problem to fix — there's no workaround, and the cost of missing it shows up directly in your TDS deduction.