Old vs New Income Tax Forms: Mapping of Commonly Used Form

Prepare for the New Income Tax Forms from 1^st April 2026 – A Reference Guide to commonly used Income Tax Forms

Overview

India’s income tax administration is undergoing a significant procedural overhaul in 2026. The Central Board of Direct Taxes (CBDT) has revamped the Income Tax Rules, replacing the long-standing IT Rules 1962 with the updated IT Rules 2026. One of the most visible changes for taxpayers, chartered accountants, and tax practitioners is the comprehensive renumbering of statutory income tax forms.

These revisions affect virtually every category of tax compliance — from audit reports and PAN applications to TDS certificates, appeals, and statements for charitable trusts. The new numbering system replaces the older, often non-sequential form references with a fresh, logically organised set of form numbers intended to simplify compliance workflows.

Why the Renumbering?

The old IT Rules 1962 had accumulated over six decades of amendments, additions, and modifications. This resulted in form numbers that were often disjointed, with similar-purpose forms carrying unrelated numbers (e.g., Forms 3CA, 3CB, and 3CD all relating to tax audit were now consolidated into a single Form 26 under the 2026 rules). The restructuring aims to:

• Consolidate multiple related forms into single, unified forms where possible.
• Provide sequential, easy-to-reference numbering across all compliance categories.
• Reduce the risk of practitioners citing outdated or incorrect form numbers.
• Align the framework with India’s move toward digital and paperless tax administration.

Key Category Changes at a Glance

The renumbering spans seven broad compliance categories:

Audit & Transfer Pricing: Forms 3CA/3CB/3CD now unified as Form 26; Transfer Pricing (3CEB) becomes Form 48.

Non-Residents & DTAA: Form 10F for DTAA becomes Form 41; Forms 15CA/15CB become Forms 145/146 respectively.

PAN Applications: Forms 49A and 49AA are split into four distinct forms (93–96) based on entity type and citizenship.

Charitable Trusts: Multiple trust-related forms (9A, 10, 10AC, 10B, 10BB, 10BE) are renumbered to Forms 106–114.

Appeals: First Appeal (Form 35) becomes Form 99; ITAT Appeal (Form 36) becomes Form 115.

TDS / TCS & Certificates: TDS salary returns (24Q) become Form 138; salary certificates (Form 16) become Form 130.

SFT & Statements: Annual TDS statement Form 26AS is renumbered to Form 168.

Commonly Used Forms – Reference Chart

Note: New form numbers are as per the revised Income Tax Rules 2026. Practitioners are advised to update their workflows and software configurations accordingly.