If you're searching for the Form 121 last date or Form 121 due date for FY 2026-27, here's what you need to know: there is no single fixed statutory deadline for submitting Form 121. Unlike an ITR filing deadline that has a firm date, Form 121 works differently — and understanding the timing is crucial to avoid unnecessary TDS deduction on your interest income.
Is There a Fixed Last Date for Form 121?
No. The Income Tax Act, 2025 (under Section 393(6)) and the Income Tax Rules, 2026 (Rule 211) do not prescribe a single "last date" for submitting Form 121. Instead, the rule is simple:
Form 121 must be submitted to the payer (bank, post office, EPFO) before the income is credited or paid to your account.
This means the practical "Form 121 due date" depends on when each specific payer credits interest to your account. If your bank credits FD interest quarterly, you need to submit Form 121 before the first quarterly interest credit date of the financial year.
When Should You Submit Form 121 for FY 2026-27?
The recommended approach is to submit Form 121 at the very start of the financial year — in April 2026 — to all payers where you have deposits or investments that generate interest income. This ensures TDS is not deducted from your very first interest credit of the year.
Practical Timing Guide for FY 2026-27
| Payer Type | Interest Credit Pattern | Submit Form 121 By |
|---|---|---|
| Banks (FD) | Quarterly / Annually | April 2026 (start of FY) |
| Post Office (SCSS, NSC) | Quarterly | Before June 30, 2026 (first quarter) |
| EPFO | Annually (usually March) | Before PF interest is credited |
| Banks (RD / Savings) | Monthly / Quarterly | April 2026 (start of FY) |
What Happens If Form 121 Is Submitted Late?
If you submit Form 121 after TDS has already been deducted by the payer, the consequences are straightforward:
- TDS cannot be reversed: The payer (bank/post office) has no mechanism to reverse TDS that has already been deducted and deposited with the government. Form 121 only prevents future TDS — it does not operate retroactively.
- Claim refund via ITR: You can recover the TDS amount by claiming it as a credit when filing your Income Tax Return (ITR) for FY 2026-27 (AY 2027-28). The refund will be processed after ITR assessment, which can take several weeks to months.
- Cash flow impact: Until you receive the ITR refund, the TDS amount is essentially locked. For senior citizens or individuals relying on interest income, this can cause a real cash flow issue.
⚠️ Bottom line: While there is no penalty for "late" Form 121 submission (since there is no fixed deadline to miss), submitting after TDS is deducted defeats the purpose entirely. The earlier you submit, the better.
Form 121 Submission Last Date 2026 — FY 2026-27 Specific Guidance
For the current tax year FY 2026-27 (April 2026 – March 2027), here is what we recommend:
- April 1–15, 2026: Submit Form 121 to all banks where you hold fixed deposits, recurring deposits, or savings accounts with interest exceeding the TDS threshold.
- April 2026: Submit to any post office branches where you hold SCSS, NSC, or FD deposits.
- Before first interest credit: If you open new FDs or investments during the year, submit a fresh Form 121 for each new deposit before the first interest credit date.
- Annual review: If your income situation changes during the year (e.g., you start a new job, receive unexpected capital gains), reassess your eligibility. Submitting Form 121 when your tax liability is not nil can attract penalties.
Key Dates to Remember for Form 121 (FY 2026-27)
| Action | When | Why |
|---|---|---|
| Submit Form 121 | April 2026 | Prevent TDS for the entire year |
| First quarterly interest | June 30, 2026 | First TDS deduction point for most banks |
| Mid-year review | October 2026 | Reassess income to confirm eligibility still holds |
| New FD opened mid-year | Before first interest credit | Submit fresh Form 121 for the new deposit |
Difference Between Form 121 and Old Form 15G/15H Deadlines
Under the old system, Forms 15G and 15H also had no fixed statutory deadline — they worked on the same principle of "submit before interest is credited." The key differences with Form 121 are:
- Single form for all ages: No need to determine whether you should use 15G (below 60) or 15H (60+). Form 121 serves everyone.
- Online filing: Form 121 can be filed digitally through the e-filing portal, making submission faster and eliminating the need for physical forms.
- Same timing principle: The "submit before income is credited" rule remains the same.
Check Your Eligibility Before Submitting
Before rushing to submit Form 121, it is essential to verify that your estimated tax liability for FY 2026-27 is genuinely nil. Filing a false declaration can lead to penalties under the Income Tax Act.