Is this no-TDS declaration transition guidance a substitute for filing advice?

No. It is an educational readiness note. Use the official portal and get case-specific CA review where facts, amounts, residency, or notices are complex.

Should I rely only on prefilled data?

No. Prefill is useful, but the return position should be matched with Form 16, AIS, Form 26AS, bank records, books, broker reports, challans, and working papers.

What should I preserve after taking a position?

Keep the official reference, computation note, supporting documents, portal acknowledgement, challans, and any professional review note in one folder.

Form 15G/15H to Form 121: New Act Declaration Guide

Understand the form-transition context for no-TDS declarations, how to preserve declarations, and what taxpayers should check under the new law.

This guide is written for Indian taxpayers, founders, finance teams, and return filers adjusting to the Income-tax Act, 2025 and Finance Act 2025 changes. It is an educational readiness note, not a promise of tax outcome, refund speed, or notice avoidance. Always match the position with the official portal, notified forms, and the taxpayer's own documents.

What changed

Declaration forms reduce or prevent deduction only when eligibility is correctly assessed. A wrong declaration can create tax, interest, or mismatch issues later.

Point	Practical meaning
1	No-TDS declarations need eligibility review, not just form signing.
2	Banks and deductors should use the correct form for the relevant period.
3	Taxpayers should preserve acknowledgements and interest certificates.

Why it matters now

The transition creates a year-selection problem. AY 2026-27 return work, Tax Year 2026-27 current compliance, old notices, and new forms can appear together in the same month. A clean file should show the period, law reference, portal form, payment or return type, and supporting evidence.

Practical example

A senior citizen giving a declaration to a bank should still estimate total taxable income and preserve interest statements because AIS and Form 26AS may later show the interest.

Records to keep

Interest certificate
Declaration copy
Bank acknowledgement
AIS and Form 26AS

Step-by-step checklist

Identify whether no-TDS declaration filing affects AY 2026-27 filing, Tax Year 2026-27 compliance, or both.
Read the official source and map the rule to your income head, taxpayer type, and dates.
Collect source records, computation notes, challans, statements, and declarations before filing or payment.
Check whether the position changes the ITR form, schedule, tax payment, TDS/TCS, or disclosure route.
Preserve the final return, acknowledgement, e-verification proof, and supporting working papers.

Official sources

Reference	Link
Income Tax Department - Forms under the 2025 Act	Open source
Income Tax Department - Guide to 2025 Act forms	Open source
Income Tax Department - TDS compliance under 2025 Act	Open source

Common mistakes to avoid

Using a familiar old form number without checking the current official form.
Mixing AY 2026-27 filing records with Tax Year 2026-27 payment or TDS records.
Treating a headline slab, rebate, or threshold as the final computation.
Filing or paying before reconciling AIS, Form 26AS, challans, books, and certificates.
Not preserving the official source and computation note used for the decision.

How MyeCA helps

MyeCA helps taxpayers and businesses organize records, compare filing routes, prepare document checklists, review tax-credit mismatches, and decide when a CA-led review is useful before filing or responding.

Final checklist

Confirm the year, read the official source, collect supporting records, prepare a short computation note, check the return or payment route, and preserve acknowledgement proof after submission.