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Form 121 Replaces 15G & 15H: Big TDS Rule Change Every Indian Taxpayer Must Know in 2026

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Nidhi Thakur
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April 6, 2026
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The introduction of Form 121 marks a significant shift in India’s tax deduction at source framework. With Form 121 replacing 15G and 15H, taxpayers must understand how this new system works to avoid unnecessary TDS deductions and compliance issues in 2026.

This move aligns with broader digital tax reforms driven by authorities like the Central Board of Direct Taxes, aiming to simplify declarations and improve transparency.

Key Highlights

  • Form 121 replaces both Form 15G and 15H for TDS exemption claims
  • A unified declaration system simplifies compliance for taxpayers
  • Digital verification and reporting are expected to increase accuracy
  • Senior citizens and regular taxpayers now use the same form
  • Greater alignment with evolving tax technology and reporting systems

What Is Form 121 and Why It Matters

Form 121 is a newly introduced self-declaration form that allows taxpayers to declare that their income is below the taxable limit, thereby preventing TDS deductions on certain incomes like interest from fixed deposits.

Previously, taxpayers used Form 15G for individuals below 60 years and Form 15H for senior citizens. The introduction of Form 121 consolidates both into a single streamlined format.

This change is part of India’s broader tax modernization efforts, supported by regulatory frameworks from institutions such as the Reserve Bank of India and Securities and Exchange Board of India.

Key Differences Between Form 121 and Forms 15G and 15H

Unified Structure

Form 121 eliminates the need for separate forms based on age. Whether you are a senior citizen or a regular taxpayer, the same form applies.

Improved Digital Integration

Unlike earlier forms, Form 121 is expected to be fully integrated with online tax filing systems, enabling real-time validation and reducing manual errors.

Better Compliance Tracking

Authorities can now track declarations more efficiently, minimizing misuse and ensuring accurate TDS reporting.

Who Should Use Form 121

Form 121 is relevant for individuals who want to avoid TDS on income sources such as:

  • Fixed deposit interest
  • Recurring deposit interest
  • Certain dividend incomes

For example, if your total income falls below the basic exemption limit, submitting Form 121 ensures that banks do not deduct TDS on your interest earnings.

Real-World Example

Consider a salaried individual earning ₹2.5 lakh annually with ₹40,000 in FD interest. Under the previous system, they would submit Form 15G to avoid TDS.

In 2026, the same individual will submit Form 121 instead. The process remains conceptually similar but becomes more streamlined and digitally verifiable.

Impact on Taxpayers and Investors

Simplified Process

The biggest advantage is simplicity. A single form reduces confusion, especially for first-time taxpayers.

Increased Transparency

With digital integration, mismatches between declared income and actual earnings are less likely.

Better Financial Planning

Investors can plan their income streams more efficiently, knowing that TDS exemptions are easier to manage.

This is particularly important for retail investors who rely on fixed-income instruments alongside equity investments.

How Swastika Investmart Helps You Navigate This Change

Navigating tax changes can feel overwhelming, especially when rules evolve quickly. Platforms like Swastika Investmart play a crucial role in simplifying this journey.

As a SEBI-registered broker, Swastika Investmart offers:

  • Strong research and advisory tools for smarter investing
  • A tech-enabled platform that integrates financial planning with compliance
  • Reliable customer support to guide investors through regulatory updates
  • A focus on investor education, helping users stay ahead of changes like Form 121

By combining investment insights with tax awareness, investors can make more informed decisions.

Frequently Asked Questions

What is Form 121 used for

Form 121 is used to declare that your income is below the taxable limit so that TDS is not deducted on certain incomes like interest.

Is Form 121 mandatory for all taxpayers

No, it is only required if you want to claim exemption from TDS and your income is below the taxable threshold.

What happens if I do not submit Form 121

If you do not submit the form, TDS may be deducted even if your income is below the taxable limit. You can later claim a refund while filing your income tax return.

Does Form 121 apply to senior citizens

Yes, Form 121 replaces Form 15H, so senior citizens will also use this unified form.

Final Thoughts

The replacement of Forms 15G and 15H with Form 121 is a step toward a more efficient and transparent tax system. While the core purpose remains the same, the simplified structure and digital integration make compliance easier for taxpayers.

Staying updated with such changes is essential for better financial planning. If you want to align your investments with evolving tax rules, consider exploring Swastika Investmart’s platform for expert guidance and tools.

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