Income Tax Scrutiny Assessment: Process, Time Limits & Reply (2026)

A scrutiny assessment is the stage at which the Income Tax Department stops accepting your return at face value and starts examining it. For most taxpayers it arrives without warning, as an electronic notice, with a deadline attached.

This guide explains income tax scrutiny assessment in full: what it is, how cases are selected, the statutory time limits that constrain the department, the documents you will need, how to respond step by step, and what happens if you do not.

It also covers something most guides currently do not. The Income-tax Act, 2025 came into force on 1 April 2026 and repealed the Income-tax Act, 1961. Scrutiny assessment now sits under a different section number — but the old Act continues to govern earlier years. Which rules apply to you depends entirely on which year your notice relates to, and this guide sets out both.

It is written for salaried taxpayers, business owners, MSMEs and professionals who have received a notice or want to understand the process before one arrives.

Quick Details: Income Tax Scrutiny Assessment

What Is Scrutiny Assessment in Income Tax?

Scrutiny assessment is a detailed examination of a filed return by an Assessing Officer to verify that the income declared, the losses claimed and the tax paid are correct.

It is fundamentally different from what happens to most returns. When you file, your return is first processed — checked automatically for arithmetical errors, internally inconsistent claims and mismatches against information the department already holds. That produces an intimation, not an assessment. Under the 1961 Act this was Section 143(1); under the 2025 Act it is Section 270(1). In both cases the department has nine months from the end of the financial year in which the return was furnished to send it.

Scrutiny is the next stage up, and it is selective. The Assessing Officer issues a notice requiring you to attend or to produce evidence supporting your return. You respond with documents and explanations. The officer examines them and passes a written assessment order determining your total income or loss and the amount payable or refundable.

Crucially, a scrutiny notice is not an allegation of wrongdoing. Many cases are selected by an automated system on risk parameters, and a significant proportion close with no addition to income at all. What it is, unambiguously, is a legal proceeding with deadlines that you cannot afford to miss.

Why Income Tax Scrutiny Assessment Matters

The deadlines are strict and one-sided. You have a limited window to respond to each notice. The department's own time limits for issuing the notice are equally strict — and a notice issued beyond them is legally invalid, which is one of the strongest defences available to a taxpayer.

Silence has a defined consequence. Failing to respond does not make the matter go away. It entitles the officer to complete a best judgment assessment — determining your income on the material available, without your explanation — and to levy penalty.

The assessment order becomes the foundation for everything after. Demand, interest, penalty proceedings and any appeal all flow from it. Points not raised during assessment are far harder to argue later.

Documentation you never produced cannot help you. Most adverse outcomes in scrutiny are not caused by genuine tax evasion. They are caused by taxpayers who could not produce, at the time it was asked for, evidence that actually existed.

It now sits across two statutes. With the 2025 Act in force from 1 April 2026 and the 1961 Act still governing earlier years, quoting the wrong section in a reply is an avoidable error that undermines your credibility with the officer.

Various Types of Assessment in Income Tax

Scrutiny is one of several assessment types. Knowing which one your notice belongs to determines how you should respond.

Summary

Automated processing of the return for arithmetical errors, incorrect claims apparent from the return itself and mismatches. Section 143(1) of the 1961 Act; Section 270(1) of the 2025 Act. Nine-month time limit.

Scrutiny

Detailed examination by the Assessing Officer after a notice requiring evidence. Section 143(2) read with 143(3) under the old Act; Section 270(8) read with 270(10) under the new Act. This is the subject of this guide.

Best Judgment

Assessment made without the taxpayer's cooperation, on the material the officer has gathered. Section 144 of the 1961 Act; Section 271 of the 2025 Act. Triggered by failure to file or failure to comply with notices.

Reassessment

Reopening of a year already assessed, where income is believed to have escaped assessment. Sections 147, 148 and 148A of the 1961 Act, with the 2025 Act carrying forward an equivalent framework and longer outer limits than ordinary scrutiny.

How Cases Are Selected for Income Tax Scrutiny

Selection is mostly automated, and understanding the triggers is the cheapest form of protection available.

CASS — Computer Assisted Scrutiny Selection applies risk parameters to returns and flags cases without human involvement. Common triggers include mismatches between your return and the Annual Information Statement, Form 26AS or TDS data; high-value transactions inconsistent with declared income; large refund claims; and sharp deviations from your own prior-year pattern.

Limited scrutiny confines the officer to specified issues identified at selection — a particular deduction, a property transaction, a foreign tax credit claim. The officer cannot roam beyond the flagged issues without following the prescribed procedure to convert the case.

Complete scrutiny permits examination of the whole return.

Manual selection follows criteria the Central Board of Direct Taxes issues from time to time, covering categories such as cases involving surveys, search, specific information from other agencies, or recurring additions in earlier years.

The practical point for an MSME or professional: most flags are data mismatches, not suspicion. Reconciling your return with your AIS and Form 26AS before filing removes a large share of selection risk.

Documents Required for Scrutiny Assessment

Income

Salary slips and Form 16, business or professional income computation, audited financial statements where applicable, and complete books of account for the year under examination with supporting ledgers.

Transactions

Bank statements for all accounts for the full year, sale and purchase deeds for property, demat and broker statements for securities, and invoices or contracts supporting material receipts and payments.

Deductions

Proof for every deduction and exemption claimed — investment receipts, insurance premium records, home loan interest certificates, rent receipts and donation receipts with the requisite certification.

Reconciliation

A written reconciliation of your return against Form 26AS, the Annual Information Statement and the Taxpayer Information Summary, explaining each difference. This single document resolves more scrutiny queries than any other.

How Does Income Tax Scrutiny Assessment Work

Notice

The Assessing Officer issues a notice requiring you to produce evidence supporting your return. It arrives electronically on the income tax portal with email and SMS alerts, and carries a Document Identification Number.

Verification

Check three things immediately — that the notice is within the statutory time limit, that it carries a valid DIN, and whether it is limited or complete scrutiny. Each affects your response.

Response

Log in to incometax.gov.in, open e-Proceedings, and file your reply with documents attached. Respond to every query specifically. Vague or partial replies invite further notices and weaken your position.

Hearing

Further queries may follow, and you have a statutory right to a personal hearing, which under faceless assessment is conducted by video conference. Ask for it where the issues are factual or complex.

Order

The officer passes a written assessment order determining your total income or loss and the sum payable or refundable. If the proposed order is adverse, a draft is shared first in the cases where that procedure applies.

Benefits of Handling a Scrutiny Assessment Properly

Closure

A well-documented response frequently ends the proceeding with no addition to income. Cases that close at assessment stage cost a fraction of what an appeal costs in time, fees and management attention.

Protection

Penalty for underreporting is significantly harder for the department to sustain where the taxpayer has disclosed fully and explained each item on record. Your reply is the primary evidence of bona fides.

Record

The reconciliations and document sets prepared during scrutiny become a permanent, organised record. This materially shortens any future assessment, reassessment or due diligence exercise.

Appeal

Grounds raised and evidence filed during assessment carry weight at appellate stages. Points introduced for the first time in appeal face procedural obstacles and are often refused admission.

Cash Flow

Resolving disputed additions at assessment stage avoids demand, interest accrual and recovery proceedings. A demand raised and then contested ties up funds long before the dispute is decided.

Common Mistakes to Avoid in Scrutiny Assessment

Ignoring

Treating the notice as routine correspondence is the single most damaging error. Non-response permits a best judgment assessment and attracts penalty under Section 272A(1)(d) of the 1961 Act.

Overdisclosure

In limited scrutiny, volunteering documents on issues not flagged can widen the examination. Answer what is asked, completely and precisely, and no more.

Late Reconciliation

Attempting to reconcile AIS, Form 26AS and the return only after the notice arrives wastes the response window. This should be prepared at filing stage, not under deadline pressure.

Wrong Section

Quoting Section 143(2) in a matter governed by Section 270(8), or the reverse, signals unfamiliarity with the proceeding. Confirm which Act applies to your year before drafting anything.

Practical Examples or Use Cases

A salaried taxpayer with an AIS mismatch. Interest income from a fixed deposit appeared in the AIS but had been omitted from the return. The case was selected under limited scrutiny. A reconciliation showing the omission, with the differential tax paid along with interest before the reply was filed, closed the proceeding without penalty.

An MSME with a cash deposit query. A trading firm was asked to explain deposits inconsistent with declared turnover. Cash books, party-wise sales ledgers and matching GST returns established that the deposits were recorded business receipts. The case closed with no addition because the records reconciled to a return already filed.

A professional who missed the window. A consultant disregarded two notices. The officer completed a best judgment assessment, estimating income from bank credits without allowing expenses that were genuinely incurred. The additions were substantially reduced in appeal, but only after two years and professional costs that far exceeded what a timely reply would have cost.

Comparison Section

Scrutiny Assessment vs Summary Assessment

Latest Updates, Rules, and Regulations

The Income-tax Act, 2025 is now in force. Passed by Parliament in August 2025 and having received Presidential assent on 21 August 2025, it came into force on 1 April 2026 and repealed the Income-tax Act, 1961. It runs to 536 sections across 23 chapters and 16 schedules, against more than 800 sections in the old Act, and replaces the "previous year" and "assessment year" concepts with a single Tax Year.

Scrutiny assessment has moved to Section 270. Under the new Act, return processing sits in Section 270(1), the scrutiny notice in Section 270(8), the three-month limitation on that notice in Section 270(9), and the assessment order in Section 270(10). Best judgment assessment moves from Section 144 to Section 271.

The time limit itself is unchanged in substance. Section 270(9) provides that no notice under sub-section (8) shall be served after the expiry of three months from the end of the financial year in which the return is furnished — the same period the proviso to Section 143(2) prescribed.

Which Act applies to you depends on the year. Under the saving provision in Section 536 of the 2025 Act, the repealed Act continues to apply to proceedings pending at commencement and to proceedings relating to earlier years. Income earned in FY 2025-26 is assessed as AY 2026-27 under the 1961 Act; income earned in FY 2026-27 is assessed as Tax Year 2026-27 under the 2025 Act. In practice this means most scrutiny notices being received during 2026 still run under Section 143(2).

Faceless assessment now has a statutory footing. What was previously a scheme framed under Section 144B of the old Act is embedded in the 2025 Act itself, with the National Faceless Assessment Centre continuing as the single interface between taxpayer and department, and the right to a personal hearing by video conference preserved.

Frequently Asked Questions

What is scrutiny assessment in income tax? It is a detailed examination of a filed return by an Assessing Officer to verify declared income, claimed losses and tax paid. It follows a notice requiring the taxpayer to produce evidence, and ends in a written assessment order.

What is the time limit for an income tax scrutiny notice? Three months from the end of the financial year in which the return was furnished. This applies under the proviso to Section 143(2) of the 1961 Act and under Section 270(9) of the 2025 Act.

Why was my return selected for scrutiny? Most cases are selected automatically through CASS on risk parameters — typically mismatches against the AIS, Form 26AS or TDS data, high-value transactions inconsistent with declared income, large refund claims, or sharp deviations from your prior-year pattern.

Does a scrutiny notice mean I have done something wrong? No. Selection is largely automated and a substantial proportion of cases close with no addition to income. It is a verification proceeding, not an accusation.

What happens if I do not respond to a scrutiny notice? The Assessing Officer may complete a best judgment assessment without your explanation, under Section 144 of the old Act or Section 271 of the new Act, and levy penalty — ₹10,000 under Section 272A(1)(d) of the 1961 Act — with prosecution possible in serious cases.

What is the difference between limited and complete scrutiny? Limited scrutiny restricts the officer to specified issues flagged at selection. Complete scrutiny permits examination of the entire return. Your notice states which applies, and it should shape how much you disclose.

How long does a scrutiny assessment take to complete? Under the 2025 Act the assessment is to be completed within one year from the end of the financial year succeeding the relevant tax year. Under the 1961 Act, for AY 2019-20 onwards, the limit was twelve months from the end of the assessment year.

Which Act applies to my scrutiny — 1961 or 2025? It depends on the year. AY 2026-27 and earlier continue under the 1961 Act, so Section 143(2) applies. Tax Year 2026-27 onwards falls under the 2025 Act and Section 270(8).

Can I get a personal hearing in a faceless assessment? Yes. A personal hearing is available and is conducted by video conference. It is worth requesting where the issues are factual, document-heavy or complex.

How do I reply to a scrutiny notice? Through the e-Proceedings facility on incometax.gov.in, addressing each query specifically with supporting documents. Our detailed walkthrough is in the guide to the income tax scrutiny notice under Section 143(2).

How do I download my assessment order? Log in to incometax.gov.in, go to e-File, then Income Tax Returns, then View Filed Returns, or open the relevant proceeding under e-Proceedings, where the order is available for download against the assessment year.

Conclusion

Income tax scrutiny assessment is a verification proceeding with hard deadlines on both sides. The department must issue its notice within three months of the end of the financial year in which you filed; you must respond within the period each notice allows. Miss your deadline and the officer can assess you without hearing your explanation. Miss theirs, and the notice itself is open to challenge.

The single most valuable thing you can do is reconcile your return against your AIS and Form 26AS at the time of filing rather than after a notice arrives. Most scrutiny queries are mismatches, and most mismatches have documentary answers that already exist.

One caution specific to 2026: with the Income-tax Act, 2025 now in force but the 1961 Act still governing AY 2026-27 and earlier, confirm which statute applies to your year before you draft a reply or cite a section.

If a notice is in hand, your next step is to check the date of issue against the limitation period, identify whether it is limited or complete scrutiny, and begin assembling the reconciliation. Our companion guides cover the scrutiny notice under Section 143(2) and the time limits for income tax notices and assessments in detail.

Received a scrutiny notice? The StartupFlora team assists businesses and professionals across India with scrutiny assessment responses, reconciliations and representation. Speak to our team before the response window closes, not after.

This guide is general information, not tax advice on your specific facts. Assessment outcomes turn on documentation and individual circumstances — consult a qualified professional on your own case.