Forms › Information Statements & Valuation › Form 166

Form 166 — Statement of Reportable Account (FATCA / CRS)

Compiled — pending CBDT Appendix III cross-check Q · Information Statements & Valuation
Replaces old Form 61B. Under the Income-tax Act, 2025, this compliance now uses Form 166.
New form numberForm 166
Old form number61B
Act 2025 referenceReportable account
CategoryQ · Information Statements & Valuation
Applies fromTax Year 2026-27 (from 1 April 2026)

What is Form 166?

Form 166 is the Income-tax Act, 2025 form titled “Statement of Reportable Account (FATCA / CRS)”. It replaces the earlier Form 61B used under the Income-tax Act, 1961 (and the Income-tax Rules, 1962). The purpose of the form is unchanged — the number and format have been updated under the new law.

It falls under the Information Statements & Valuation category, and applies to Tax Year 2026-27 (AY 2026-27) onwards, i.e. from 1 April 2026.

A fuller plain-language explainer for Form 166, reviewed by our Chartered Accountants, is being added.

Transitional rule — which form applies?

⚠️ Which form applies depends on the tax year the compliance relates to, not the calendar date you file. Proceedings for tax years beginning before 1 April 2026 (assessments, appeals, TDS for transactions up to 31 March 2026, and Section 89 relief for those years) continue on the old forms.

Frequently asked questions

What is the new form for Form 61B?

Under the Income-tax Act, 2025, old Form 61B is replaced by Form 166 — Statement of Reportable Account (FATCA / CRS). It applies to Tax Year 2026-27 onwards.

From when does Form 166 apply?

It applies to Tax Year 2026-27 (AY 2026-27) onwards, i.e. from 1 April 2026. Compliance relating to earlier tax years continues on the old forms.

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Not sure which form applies to your case?

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This directory is compiled from official CBDT / incometax.gov.in sources and reputable references, and is being reconciled against the Gazette-notified Income-tax Rules, 2026 (Appendix III). Forms marked “compiled” are pending that final cross-check. This is general information, not tax advice.