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Repair Windows errors before they cause bigger problemsFix Now →Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Clear out junk files and repair common Windows errorsFree Scan →Act quickly, but first identify the tax year and the law named in the notice. Reassessment matters for tax years 2026–27 onward generally follow the Income-tax Act, 2025, while earlier years and proceedings already pending when that Act began remain under the Income-tax Act, 1961. Under the older law, a section 148 notice gives the return deadline stated in the notice, capped at three months from the end of the month in which the notice was issued. An adverse order normally creates a separate 30-day first-appeal period. Download the complete notice, preserve proof of service, reconcile the disputed item with your records, respond through the e-Filing portal, and obtain qualified Indian tax advice if the amount or deadline is material.
Start with the tax year and governing Act
A section number alone is not enough to determine your rights. Write down the tax year or assessment year shown on the notice, the provisions cited, the issue date, the service date, and the deadline. Then determine whether the matter belongs to the Income-tax Act, 1961 or the Income-tax Act, 2025.
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The Income-tax Act, 2025 commenced on 1 April 2026. The Income Tax Department says its reassessment provisions apply to tax years 2026–27 onward. Earlier tax years, and proceedings that were already pending when the new Act commenced, continue under the 1961 Act framework. Use the statute that actually governs your matter rather than importing a deadline or form from the other regime.
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| Point | Income-tax Act, 1961 framework | Income-tax Act, 2025 framework |
|---|---|---|
| Typical years covered | Earlier tax years and old-law proceedings pending when the 2025 Act began | Tax years 2026–27 onward, subject to the Department’s transition guidance |
| Pre-notice process | Ordinarily a section 148A information-and-response process precedes a section 148 notice, although stated exceptions exist | Follow the procedure and provisions printed in the new-law notice; do not assume old section numbers apply |
| Return or response deadline | A section 148 notice specifies the period for filing the return, capped at three months from the end of the month of issue | Use the deadline written in the notice; the material available here does not establish one universal number of days for every new-law show-cause situation |
| First-appeal form | Form 35 guidance | Form 99 guidance |
| First-appeal forum | Joint Commissioner (Appeals) or Commissioner of Income Tax (Appeals), where the order is appealable | Use the forum and route specified under the 2025 Act and the Form 99 instructions |
| Appeal limitation | Generally 30 days, with the trigger depending on the type of order | The notified rules and Form 99 guidance also use a 30-day period, with the applicable trigger depending on the order |
This transition summary is based on the Income Tax Department’s Reassessment Proceedings FAQs. A notice can involve unusual transitional facts, so retain the complete assessment history if the year or status is unclear.
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Identify exactly what kind of notice you received
A section 148A show-cause notice under the old Act
In the ordinary old-law sequence, the Assessing Officer identifies information suggesting that income may have escaped assessment, gives the taxpayer an opportunity to respond, considers that response, and records a reasoned decision on whether the case is fit for reassessment. The Department also lists exceptions in which the usual pre-notice process may be skipped. Consequently, do not assert that every notice is invalid merely because you did not receive a particular earlier communication; examine the exception stated in the notice and the underlying record.
The deadline for a show-cause response is the date written in that notice. The materials available for this guide do not establish one universal number of days for every show-cause notice. Treat the printed deadline as controlling unless a qualified adviser identifies a lawful basis to challenge it.
A section 148 notice requiring a return
A section 148 notice is a different stage. It requires you to furnish a return for the relevant year within the period specified in the notice. Under the Department’s old-law guidance, that period cannot exceed three months from the end of the month in which the notice was issued. This is not a fixed “number of days from receipt”: a notice issued on one date and served later can produce a calculation that differs from an ordinary receipt-based assumption. Check the exact issue month, the wording of the notice, and the service record.
A response to an earlier show-cause notice does not automatically replace the return requested by a later section 148 notice. If both stages apply, complete each required filing.
A notice under the 2025 Act
For tax years governed by the new Act, use the provisions and labels printed on the notice. The Department’s FAQ confirms an opportunity to respond in the new-law show-cause process, but the evidence available here does not support a single standard response period for all such notices. Do not borrow the old three-month rule unless the notice and applicable law make it relevant.
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Deadlines to put on your calendar
| Event | What starts the clock | Period established by Department guidance | What to do |
|---|---|---|---|
| Old-law show-cause response | The deadline stated in the show-cause notice | No single universal period is established in the material reviewed | Submit a complete response by the printed date; request clarification or professional advice immediately if service or calculation is disputed |
| Old-law section 148 return | Issue of the section 148 notice, with the notice specifying the filing period | Not exceeding three months from the end of the month in which the notice was issued | File the required return by the notice’s date; do not treat the limit as a simple receipt-based number of days |
| Old-law assessment or penalty appeal | Service of the related notice of demand | 30 days | File Form 35 with the appropriate first-appeal authority and preserve the acknowledgement |
| Other old-law matters covered by Form 35 | Service of the intimation of the order | 30 days | Confirm the applicable trigger in the form guidance before calculating the last day |
| New-law appeal under Form 99 | The trigger applicable to the type of order, as stated in the notified rules and guidance | 30 days | Use Form 99 and the new-law filing instructions; do not substitute Form 35 |
The Department says delay in an old-law appeal may be condoned where reasonable cause prevented timely filing. Condonation is discretionary, so prepare and file within the original period rather than relying on a later request to excuse delay.
Step-by-step: challenge the notice and protect your position
- Download and preserve the complete record. Sign in to the income-tax e-Filing portal, open the pending action or e-Proceedings area, and download the notice, enclosures, information relied on, and any earlier communications. Keep the original files, not only screenshots. Record the date and method by which the notice was served.
- Create a deadline sheet. Record the tax year or assessment year, governing Act, notice type, statutory provisions, issue date, service date, response due date, and any later hearing or upload date. Use calendar reminders several days before each deadline. If the portal and the PDF show different dates, preserve both and seek advice promptly.
- Classify the procedural stage. Decide whether you are answering a pre-notice show-cause communication, filing a return after section 148, responding to an ongoing reassessment, or appealing a completed order. These are separate obligations. A show-cause reply is not a substitute for a return that a later notice requires.
- Read the allegation line by line. Identify the transaction, bank entry, property, deduction, credit, or other income item questioned. Note the information source named by the officer, the proposed amount, the year to which it is attributed, and every question that requires an answer. Do not answer a broad suspicion with a generic statement that your return was correct.
- Reconcile the disputed item to your filed return. Start with the return and computation for the year. Trace the amount through the general ledger, bank statements, invoices, contracts, loan or ownership records, withholding-tax statements, and prior correspondence as relevant. Explain differences caused by timing, gross-versus-net presentation, duplicated reporting, refunds, reversals, or accounting classification only when your records support the explanation.
- Draft a point-by-point response. Identify the notice and deadline at the top. Use a separate heading for each allegation, state whether it is admitted, disputed, or requires correction, provide the facts and legal position, and refer to clearly labelled attachments. If a record is unavailable, explain why, describe the steps taken to obtain it, and request a reasonable opportunity where appropriate.
- Submit through the designated portal action. The Department’s portal help describes e-Proceedings as the place to respond to online notices. Upload the response and relevant attachments in the permitted file formats and size limits shown by the portal. Submit before the deadline, wait for the acknowledgement, and save the acknowledgement, uploaded files, transaction number, and any subsequent portal message.
- Comply with a later section 148 requirement. If a section 148 notice is issued after the pre-notice stage, file the return in the form and by the date required. Preserve proof of filing even if you have already submitted a detailed show-cause response.
- Monitor the account after submission. Check e-Proceedings and registered email for requests, hearing notices, the reasoned decision, an assessment order, or a demand notice. A response is not complete merely because an attachment upload succeeded; verify that the portal shows a submitted status.
- Start a separate appeal file if the order is adverse. As soon as an assessment order and demand notice arrive, calculate the 30-day period under the applicable Act, prepare grounds, gather the record, and file the correct form. Do not wait for recovery action or for informal portal messages before starting.
Documents to assemble
There is no single official checklist that fits every reassessment allegation. Submit records that answer the actual issue, and avoid uploading irrelevant personal or confidential material. The following working file usually makes review and appeal preparation easier:
| Record | Why it may matter | Handling point |
|---|---|---|
| Notice, enclosures and proof of service | Establishes the allegation, legal provision, issue date, service date and deadline | Keep the original PDF and portal download details |
| Return and computation for the relevant year | Shows what was reported, claimed or omitted | Mark the exact schedule, line and amount at issue |
| Books, ledgers and reconciliations | Connects the return figure to underlying accounting entries | Provide extracts relevant to the allegation rather than an unindexed data dump |
| Bank statements and payment trail | Can establish the source, destination, date and nature of a receipt or payment | Redact or secure unrelated sensitive information where the portal permits |
| Invoices, contracts and correspondence | Explains the commercial or personal transaction and its timing | Refer to each document in the paragraph that relies on it |
| Loan, ownership and investment records | May support the source of funds, title, repayment or capital-gain treatment | Include registration or account references when they identify the disputed item |
| Withholding-tax and third-party statements | Helps reconcile income or credit differences reported by another party | Explain any mismatch instead of assuming the officer will infer it |
| Earlier replies, orders and correspondence | Shows what was previously disclosed and how the issue developed | Arrange chronologically with portal acknowledgements |
| Assessment order and notice of demand | Needed to understand the appealable decision and limitation trigger | The Form 99 manual expressly calls for the order or intimation and notice of demand among attachments; requirements can vary by case |
- Name files consistently, for example by exhibit number and short description.
- Use a contents page or index when there are many attachments.
- Keep an identical offline copy of every file uploaded.
- Do not claim that an illustrative document list is legally mandatory in every case.
How to write a persuasive response
Use a clear opening
State the taxpayer’s name and identification details requested by the portal, the tax year, notice reference, date of service, and the response being filed. Confirm that the response is within the stated time, or explain the circumstances if it is late.
Answer each allegation separately
A useful structure is: “Allegation,” “Facts,” “Reconciliation,” “Legal position,” and “Evidence.” If the amount is correct but was reported under a different line, show both figures and the bridge between them. If the allegation concerns a transaction that did not belong to you, identify the actual account holder or counterparty only with records that support that statement.
Distinguish disagreement from missing information
Say whether you dispute the facts, the tax treatment, the year of taxation, the amount, or the conclusion that income escaped assessment. Where a document cannot yet be obtained, state what has been requested and when it is expected. A precise request for additional time is more useful than an unconditional promise to provide records later.
Keep the submission focused
Long irrelevant attachments can obscure the decisive evidence. Include records that directly answer the notice, explain unusual entries, and preserve the complete backup file in case the matter proceeds to appeal. Review every statement for consistency with the return, books and prior submissions.
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What happens after the response
Under the ordinary old-Act sequence, the Assessing Officer considers the information, your response and the record, then makes a reasoned decision on whether the matter is fit for reassessment before issuing a section 148 notice. The Finance Bill’s explanatory material describes the opportunity to respond and reasoned-decision requirements. Exceptions are recognised in official guidance, and whether the procedure was valid in an individual case depends on the notice, approvals and complete history.
If the officer issues a section 148 notice, comply with its return requirement and continue responding to later requests. If an assessment order follows, compare the final additions with the show-cause proposal and your evidence. Preserve any difference because it may matter when framing appeal grounds.
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Old-law orders: Form 35
The Department’s Form 35 guidance states that an appeal is generally filed within 30 days. For an assessment or penalty appeal, the period runs from service of the related notice of demand. For other matters covered by the guidance, it runs from service of the intimation of the order. The first-appeal authority is the Joint Commissioner (Appeals) or the Commissioner of Income Tax (Appeals), as applicable to the order.
Prepare concise grounds that identify each error without argument or evidence mixed into the heading. Typical categories might include an incorrect factual finding, failure to consider a document, wrong attribution of an amount or year, or a procedural defect. The correct grounds depend on the order and record; do not copy generic grounds that do not address your case.
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New-law orders: Form 99
The Department’s new-law guidance uses Form 99. The notified rules contain a 30-day appeal period, with the starting event depending on the type of order. Apply Form 99 only where the 2025 Act governs the matter. Read the relevant form instructions for the authority, grounds and attachments rather than assuming that Form 35 fields or old section references carry over.
Online filing routes
The Department describes two portal routes for an appeal:
Pending Actions > E-Proceedings > For your Information > File Appeale-File > Income Tax Forms > File Income Tax Forms
Portal labels can change. Follow the current screen, select the correct form and year, attach the order and notice of demand where requested, complete the grounds and facts, pay any displayed fee, verify the submission, and save the acknowledgement.
Appeal file checklist
- Reassessment notice and any preceding show-cause notice
- Your show-cause reply, return filed after section 148, and all attachments
- Assessment or reassessment order and notice of demand
- Return and computation for the year
- Portal acknowledgements, hearing notices and correspondence
- Evidence that directly supports each proposed ground
The Form 99 manual specifically asks for the order or intimation and notice of demand among the attachments. That instruction is not an exhaustive evidence list for every appeal, and the portal may request additional items based on the filing.
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Common mistakes and how to correct them
Counting from receipt when the rule uses issue month
For an old-law section 148 notice, the statutory cap is tied to the end of the month of issue, while the actual period is written in the notice. Record both issue and service dates and use the notice’s stated deadline.
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Assuming every case requires the same section 148A path
Official guidance identifies exceptions to the ordinary pre-notice sequence. Review the stated basis and record before alleging that the absence of a step automatically invalidates the notice.
Sending a generic “income was already disclosed” reply
Identify the exact return schedule, ledger entry and supporting document that establish disclosure. Reconcile the amount and explain any difference between the information cited by the officer and your filing.
Uploading documents without an index
Unlabelled files make it difficult to connect evidence to an allegation. Number exhibits, use descriptive filenames and cite each exhibit in the relevant paragraph.
Confusing a reply with an appeal
A response to a show-cause notice and a first appeal against an order are different filings with different forms, deadlines and decision-makers. After an order arrives, calculate the appeal period independently.
Relying on condonation as a routine extension
Although delay may be condoned for reasonable cause, the decision is discretionary. File within 30 days whenever possible and preserve evidence of any event that genuinely prevented timely filing.
Using the wrong Act or form
Form 35 belongs to the old-law guidance; Form 99 belongs to the new-law guidance. Confirm the tax year, transition status and statutory references before filing.
When professional advice is warranted
Consider prompt advice from a qualified Indian tax professional when the notice involves substantial tax, several years, suspected undisclosed assets, complex international or property transactions, a disputed service date, a possible limitation issue, or a question about the authority’s approval or jurisdiction. The official materials explain the general procedure but cannot determine whether a particular notice is valid, whether a limitation period has expired, or which grounds and documents best fit your facts. Give the adviser the notice, proof of service, complete assessment history, prior returns and orders, and the information relied upon.
Keep meeting every stated procedural deadline while seeking advice. An adviser can help preserve objections and frame grounds, but a pending consultation does not by itself suspend a portal deadline.
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