Intimation u/s 143(1) of the Income Tax Act: Meaning and How to Deal With it

Filing your income tax return is just the start; the Centralised Processing Centre (CPC) digitally reviews every detail. Thanks to the Income Tax Department’s e-filing portal, launched in 2021, compliance has improved significantly. In fact, gross direct tax collections for FY 2025–26 have already touched ₹5.45 lakh crore as of June 19, showing stronger taxpayer participation.

If you receive an intimation u/s 143(1), it simply means there is a difference in the tax you paid versus what was due. Do not worry, this guide will help you handle it with ease.

Quick Synopsis:

• Section 143(1) intimation informs about ITR matching, refunds, or payment discrepancies.
• If discrepancies exist, compare details, correct issues, or apply for rectification.
• Intimations are sent via email, portal, and SMS; keep contact details updated.
• Receiving an intimation is normal; review and resolve calmly.

What is Income Tax Intimation U/S 143 (1)?

According to a recent publication, the Income Tax Department reports that more than 9.19 crore Indians had submitted their income tax returns by the close of March 2025. If you are or will be submitting the necessary ITR documents in the near future, know that your preliminary assessment will adhere to section 143(1).

For those who are unsure about the intimation u/s 143 (1) meaning, the section divides all possible consequences into 3 segments:

1. No Adjustment: If a taxpayer’s returns match the Income Tax Department’s calculations, they receive a notification about the same. Accordingly, the return amount is processed. 
2. Refund Due: When the ITD verifies that you have paid more income tax than required, the intimation u/s 143 (1) will reveal that statement. 
3. Demand for Outstanding Payment: The notification will indicate if any additional amount is owed if the income tax department identifies such discrepancies.

The intimation for income tax u/s 143(1) is vital. Overlooking it can result in missing crucial future updates.

Steps to Take When You Get an Intimation Under Section 143 (1)

On July 31, 2024, a total of 6,992,000 Income Tax Returns (ITRs) were filed in a single day. This last-minute rush can often result in tax filing issues. If you receive an intimation under Section 143(1) due to delays, there is no need to worry. All you must do is perform these steps: 

Step 1: Analyse the Intimation u/s 143(1)

First, you should read the details of the intimation cautiously to determine what the income tax department intends to point out. The notice will normally declare the department’s adjustments, particulars of the return you filed, and the resultant outcome, i.e., whether the income tax department owes a larger amount or you will get a refund. 

Step 2: Compare With Your ITR

During the last fiscal year (FY 2024–25), a total of 1.65 lakh income tax returns were found to be compliance breakers due to regulatory shortfalls. So, you must compare the income tax intimation u/s 143 (1) with your ITR to rule out such possibilities. 

Step 3: Calculate Your Tax Dues With the help of Tools

Online income tax calculators help confirm whether your calculations match the ITD’s proposed adjustments.

Step 4: Take Action

If any discrepancy is found, proceed to settle the due amount or wait for a refund. Otherwise, you must issue a rectification request as per section 154 using the e-filing portal. 

How Will You Access the Intimation Notice Under Section 143 (1)?

Taxpayers can expect to receive notification letters from the Income Tax Department at their registered email addresses. Additionally, important updates and relevant links can be accessed through their accounts on the income tax portal. 

If, by chance, you miss these notifications, you can also check the SMS alerts sent to your registered phone number for any pertinent information.

Note: In the period between FY 2022 and FY 2024, around 50,000 to 60,000 ITR audits were carried out as part of the risk management strategy. Therefore, to be on the safe side, consider ensuring that all your contact details are updated. This way, you can receive notifications and take the necessary measures on time.  

What Is the Password for Intimation U/S 143 (1)?

The intimation letter under section 143 (1) is locked with a password. To enter the correct password while opening the file, you must type in your PAN or Permanent Account Number in lowercase, followed by your DOB without any spaces. The date of birth has to be in DDMMYYYY format. 

Let us understand the password pattern better with an example. Suppose a person’s PAN is EPFG7890E and their date of birth as per official documents is 01/05/2001. In this case, the password for their income tax intimation letter will be “epfg7890e01052001”. 

Getting a letter of income tax intimation u/s 143 (1) should not cause undue concern, as it does not necessarily imply that you owe a fine. Even if you have a pending income tax, you can quickly settle it by selecting the correct assessment year on the official portal. 

Mistakes in computing investment returns for a particular period can cause these mismatches. For instance, a person may underestimate their projected returns from an online FD, assuming they will be in line with the market average.

With platforms like Stable Money now offering RBI-approved bank FDs with returns of up to 8.50% annually, it is worth reviewing your options and planning smarter. Use the notice as a chance to fix issues, not fear them.