Types of Income Tax Assessments in India
Income tax assessment is the statutory process for determining taxable income and the tax payable or refundable. Indian law distinguishes tax paid by the taxpayer, automated return processing, detailed scrutiny, best judgment assessment and reassessment of income that has escaped assessment.
The provisions below refer to the Income-tax Act, 1961, as applicable to the relevant assessment year. The Income-tax Act, 2025 takes effect from 1 April 2026; the governing enactment and transitional provisions must therefore be checked for the tax year and proceedings concerned. Consult the Income Tax Department and India Code for authoritative legislation and updates.
1. Self-Assessment Under Section 140A
Meaning: Self-assessment is the taxpayer's calculation and payment of tax due on the income disclosed in the return, after accounting for applicable tax deducted at source, advance tax, reliefs, credits and other adjustments permitted by law.
Under Section 140A of the Income-tax Act, 1961, where tax, interest or applicable fees remain payable on the basis of the return, the taxpayer must pay the amount before furnishing the return. Self-assessment does not mean that the Assessing Officer has accepted or finally assessed every item in the return.
Returns are generally furnished under Section 139, subject to the relevant filing rules, deadlines and exceptions. Taxpayers can file returns, pay taxes and view communications through the Income Tax e-Filing Portal.
2. Processing of Returns Under Section 143(1)
Meaning: Processing is the initial statutory examination of a filed return through prescribed checks and adjustments. It is distinct from a detailed scrutiny assessment.
Section 143(1) of the 1961 Act provides for processing of returns, including specified arithmetical corrections and other adjustments permitted by the provision. Where required, an intimation communicates the tax demand, refund or other outcome. Proposed adjustments requiring an opportunity to respond must follow the applicable statutory procedure.
An intimation under Section 143(1) should not automatically be treated as a scrutiny assessment under Section 143(3). The time limits and rules applicable to processing depend on the relevant year and law.
3. Scrutiny Assessment Under Sections 143(2) and 143(3)
Meaning: Scrutiny assessment is a detailed examination of a return to determine the correctness and completeness of reported income, deductions, exemptions, losses and taxes.
Under Section 143(2), a notice may be issued for scrutiny in accordance with the applicable conditions and limitation period. The taxpayer may be asked to provide books of account, supporting documents, explanations and other relevant evidence. Section 143(3) governs the resulting assessment order determining total income or loss and the amount payable or refundable.
The scope of the examination depends on the applicable selection and assessment procedures. There is no fixed statutory rule that scrutiny must cover a particular percentage of all returns. Taxpayers should verify the authenticity of notices and respond within the specified time through the official portal.
4. Best Judgment Assessment Under Section 144
Meaning: A best judgment assessment is an assessment made by the Assessing Officer using relevant available material and a reasonable judgment where statutory defaults or other specified circumstances prevent an ordinary assessment.
Under Section 144 of the 1961 Act, this may arise where a taxpayer fails to furnish a required return, fails to comply with a notice under Section 142(1) or a direction under Section 142(2A), or fails to comply with the terms of a notice under Section 143(2), subject to the statutory conditions. An assessment cannot be arbitrary: the officer must consider relevant evidence and comply with the prescribed opportunity-of-hearing requirements and exceptions.
The earlier suggestion that incomplete accounts alone always trigger Section 144, or that no refund can ever arise from a best judgment assessment, is not a reliable statement of the provision. The outcome depends on the assessment and applicable law.
5. Income Escaping Assessment Under Sections 147 to 151
Meaning: Reassessment concerns income chargeable to tax that has escaped assessment for a relevant assessment year, subject to the statutory safeguards and limitation periods.
Section 147 of the Income-tax Act, 1961 empowers reassessment where its conditions are satisfied. Section 148 addresses the notice requiring a return, Section 148A prescribes the applicable preliminary procedure and safeguards, Section 149 governs time limits, and Section 151 addresses the specified approval authority. The Finance (No. 2) Act, 2024 made significant changes to the reassessment framework, including limitation rules; the provisions applicable on the date of the notice and any transitional rules must be examined carefully.
It is incorrect to assume that every assessment can automatically be reopened for six years. The permissible period depends on the statutory conditions, monetary thresholds where relevant, the assessment year, and the applicable version of the law. A taxpayer receiving a notice should check its legal basis, date, limitation, approval requirements and response deadline.
6. Faceless Assessments, Notices and Remedies
Many income tax proceedings are conducted electronically, including under the faceless assessment framework of Section 144B of the 1961 Act where applicable. Notices and orders should be reviewed through the authenticated e-Filing Portal.
What to do after receiving a notice
- Verify the notice and its document identification details using the official portal.
- Identify the relevant assessment year, statutory section and response deadline.
- Reconcile the return with Form 26AS, the Annual Information Statement, books and supporting records.
- Submit a complete, timely response with supporting evidence.
- Review the order and consider rectification under Section 154 or an appeal under the applicable provisions if justified.
Appeal procedures, available remedies and deadlines differ by order and governing law. Professional advice is advisable for disputed additions, reassessment notices and significant tax demands.
7. Official Income Tax Resources
- Income Tax Department e-Filing Portal - returns, payments, notices and electronic responses.
- Income Tax Department - legislation, circulars, notifications and departmental guidance.
- India Code - central legislation and statutory text.
- e-Gazette of India - published Acts, rules and notifications.
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Updated: 8 October 2026. General educational information; not a substitute for advice on individual facts.