Income Tax Rules 2026: Key forms renumbered as New Tax Act gets implemented from April 2026

Tax MC

• Draft Income-tax Rules, 2026 propose major renumbering of tax forms from April '26
• New rules simplify return filing and standardize compliance for taxpayers
• Tax pros must update systems before April 2026 transition.

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The Income Tax Department has released the Draft Income-tax Rules, 2026, along with draft forms to implement the Income-tax Act, 2025, offering the first detailed glimpse into how India’s revamped tax framework is expected to function from April 1, 2026.

While the rules remain in draft form and are open to stakeholder consultations, they lay out a clear structural shift towards simplified return filing, clearer valuation norms for income and perquisites, and a more standardised compliance framework.

A major visible change is the comprehensive renumbering of income tax forms, affecting taxpayers, professionals, and institutions alike.

Why the renumbering matters under New Income Tax Act

The new numbering system aligns forms with the structure of the Income-tax Act, 2025, replacing legacy form numbers that evolved piecemeal over decades. For taxpayers, this is expected to reduce ambiguity and duplication. For professionals, however, it will require quick adaptation, system updates, and process realignment.

Several commonly used audit and international tax forms have been renumbered:

Tax audit reports currently filed in Forms 3CA, 3CB and 3CD will now be consolidated under Form 26

Transfer pricing audit shifts from Form 3CEB to Form 48

MAT certification moves from Form 29B to Form 66

Tax Residency Certificate (TRC) applications change from Form 10FA to Form 42

DTAA-related information, earlier furnished in Form 10F, will now be reported in Form 41

Charitable trusts and non-profits will see one of the extensive restructurings under the draft rules:

Provisional registration: Form 10A ➝ Form 104

Final registration / renewal: Form 10AB ➝ Form 105

Accumulation of income: Form 10 ➝ Form 109

Audit reports: Forms 10B / 10BB ➝ Form 112

Donee statement: Form 10BD ➝ Form 113

Donor certificate: Form 10BE ➝ Form 114

The draft rules also introduce new numbering for core withholding and reporting forms:

Lower or nil TDS application: Form 13 ➝ Form 128

Salary TDS certificate: Form 16 ➝ Form 130

TDS return (salary): 24Q ➝ Form 138

TDS return (residents): 26Q ➝ Form 140

TDS return (non-residents): 27Q ➝ Form 144

TCS return: 27EQ ➝ Form 143

These changes are expected to better align reporting with real-time data matching and analytics.

Several widely used informational and reporting forms have also been renumbered:

Annual tax statement (26AS) ➝ Form 168

Foreign remittance declaration: 15CA ➝ Form 145

CA certificate for remittances: 15CB ➝ Form 146

Statement of Financial Transactions (SFT): 61A ➝ Form 165

What taxpayers and professionals should expect

Although no immediate action is required, the draft rules signal a clear transition timeline. Tax professionals, employers, NGOs, and reporting entities will need to update internal systems, compliance checklists, and client communication well before April 2026.

If notified largely in their current form, the Income-tax Rules, 2026 will mark one of the most comprehensive compliance restructurings in recent years, with a strong emphasis on clarity, consistency, and predictability under the new tax law framework.