Understanding Section 143(1) Intimation: Your Income Tax Return Processing Notice

July 31, 2026, is the due date to file an Income Tax Return (ITR) for the Assessment Year (AY) 2026-27 for salaried employees, pensioners, students, and others who are not liable for a tax audit. Once the ITR is filed and it is processed by the Centralised Processing Centre, Bengaluru, the Income Tax Department sends an intimation under Section 143(1) to the taxpayer.

The intimation under Section 143(1) of Income-tax Act (ITA), 1961, (the corresponding Section 270(1) of ITA 2025) is the income tax department's formal notification issued after processing a taxpayer's ITR.

It is essentially a summary of the department's preliminary verification of the return and reflects whether the tax computation filed by the taxpayer has been accepted or whether any permissible adjustments have been made.

Keep reading to know what this Section 143(1) intimation shows and how to read it:

What does Section 143(1) show?

Chartered Accountant Suresh Surana says that typically, Section 143(1) intimation contains details such as the taxpayer's PAN, assessment year, acknowledgement number of the return filed, document identification number (DIN), and a comparative statement of income, deductions, exemptions, tax liability, taxes paid, and the final tax position as per the taxpayer's return and as determined by the department.

According to Surana, this Section 143 (1) intimation compares the figures reported by the taxpayer with those computed by the Centralised Processing Centre (CPC), Bengaluru, and contains details relating to total income, deductions, exemptions, tax liability, and tax credits such as TDS, TCS, advance tax, and self-assessment tax, as well as the final amount of tax payable or refund due.

What Section 143(1) intimation means for taxpayers

Once you submit the ITR and verify it, it is processed by CPC. Then the tax department reconciles the ITR information with its own data and accordingly either accepts it (partially or fully) or rejects it (partially or fully). This decision of the tax department is communicated via the Section 143(1) intimation.

Surana says that if an intimation under Section 143(1) shows that the tax computation has been accepted, it generally means the income tax department has processed the ITR and found no mismatch between the taxpayer's computation and its own processing.

In simple terms, there is no additional tax payable, no interest or penalty arising on processing, and no refund is due. Surana says: "For most taxpayers, it signifies that the return has been successfully processed and the filing cycle for that assessment year has effectively reached closure at the processing stage."

However, taxpayers should note that a Section 143(1) intimation is a processing confirmation and not a scrutiny assessment. It confirms acceptance of the ITR at the preliminary processing stage.

What can be the outcome of a Section 143 (1) intimation

In essence, a Section 143 (1) intimation tells the income tax department's final tax computation. If you disagree with the I-T department's tax computation or believe any claim has been wrongly accepted or rejected, you can take legal action or pursue other remedies like grievance.

Surana explains what the outcome of a Section 143(1) intimation can be:

ITR processing stage

At the processing stage, the tax department may make specified adjustments prescribed under Section 143(1) of the Income-tax Act, 1961 (the corresponding Section 270(1) of the Income Tax Act, 2025), such as correction of arithmetical errors, rectification of incorrect claims apparent from the return, disallowance of certain losses or deductions where statutory conditions are not fulfilled, etc.

After processing ITR

The outcome of a Section 143 (1) intimation may fall into one of the following categories:

No Demand, No Refund- where the tax department accepts the return as filed and no further tax is payable or refundable.

Refund Due- where the tax department determines that excess tax has been paid and a refund is payable to the taxpayer.

Tax Demand Raised - where the Department's computation indicates that additional tax is payable by the taxpayer

Surana says: "Where the intimation shows that the tax department's computation matches the taxpayer's computation, it signifies that the return has been processed and accepted without any adjustment at the Section 143(1) stage."

Other aspects of Section 143 (1) intimation that taxpayers should know

A Section 143(1) of ITA 1961 (the corresponding Section 270(1) of ITA 2025) intimation is an important document that taxpayers should review carefully, even when the return has been accepted without any adjustments.

While a Section 143 (1) intimation confirms the outcome of the tax department's processing of the return, Surana says that it also provides valuable insights into whether the reported income, deductions, tax credits, and tax liability have been correctly considered and whether any further action may be required from the taxpayer.

Surana highlights some key aspects:

The two-column comparison: The notice features a distinct side-by-side table layout. One column displays data "As provided by taxpayer" (your filing), and the other shows "As computed under Section 143(1)" (the income tax department's math). Taxpayers must verify that both columns match perfectly.

Strict 30-day response deadline: If the intimation shows a tax demand or a discrepancy that the taxpayer disagrees with, they must respond or pay within 30 days. Ignoring a tax demand beyond this window can trigger a 1% per month interest penalty under Section 220 of ITA 1961 (the corresponding Section 411 of ITA 2025), and the taxpayer may be legally classified as an "assessee in default."

Not a final audit assessment: Receiving this notice only means that the return has been processed. The department can still issue a comprehensive scrutiny notice under Section 143(2) within a specific statutory window if they flag any complex tax evasion indicators.