Published Nov 27, 2025 4 Min Read

What is a Challan Identification Number (CIN)?

A Challan Identification Number (CIN) is a unique 20-digit alphanumeric code assigned to every tax-related transaction in India. This identifier is generated once a tax payment is acknowledged by the authorised bank. CIN acts as a digital receipt, ensuring that your tax payment is correctly tracked and recorded.

Why is CIN important?

  1. Payment Tracking: CIN helps taxpayers track their payments and ensure they are correctly credited to the government.
  2. Verification: It serves as proof of payment, which is essential when filing tax returns or resolving discrepancies.
  3. Error Prevention: CIN ensures accurate records, minimising the risk of errors in tax filing.

Where is CIN used?

CIN is indispensable for transactions like:

  • Income Tax Payments
  • Goods and Services Tax (GST) Payments
  • Tax Deducted at Source (TDS) Payments

For example, if you are an employer depositing TDS on behalf of your employees, the CIN serves as your reference for verifying that the payment has been processed.

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Where to Find Your Challan Identification Number

The CIN is typically printed on your tax challan or receipt after you make a payment. It is crucial to know where to locate it, as it serves as proof of your transaction.

How to locate CIN on a challan or tax form

Follow these steps to find your CIN:

  1. Access your challan: Log in to the tax portal or retrieve the physical copy of your challan.
  2. Look for the 20-digit code: The CIN appears as a 20-character alphanumeric code on the receipt issued by the bank.
  3. Understand the format: CIN is structured as follows:
    • First 7 digits: Bank branch code
    • Next 8 digits: Date of payment in DDMMYYYY format
    • Last 5 digits: Unique transaction serial number

Example: A CIN might look like 1234567DDMMYYYY00001.

Pro Tip:

Always double-check the CIN on your challan to avoid errors when using it for verification or tracking.

How to Find Challan Details with TAN

If you do not have your CIN but have your Tax Deduction and Collection Account Number (TAN), you can still retrieve your challan details.

Step-by-step guide to locate CIN using TAN

  1. Log in to the tax portal: Use your TAN credentials to access the system.
  2. Go to the challan inquiry section: Navigate to the section dedicated to TDS or tax payments.
  3. Input TAN and payment date: Enter your TAN along with the payment date range to fetch the relevant challans.
  4. Retrieve CIN: The system will display a list of transactions, including the CIN.

Common Use Case:

Employers often use this method to retrieve CIN details for TDS payments made on behalf of employees.

Common CIN Status Messages and Their Meanings

It is normal to encounter different status messages when checking your CIN. Here is a quick breakdown:

StatusMeaningActionable Insight
ProcessedThe payment has been successfully credited to the government.No action needed. Keep the CIN for your records.
PendingThe payment is yet to be processed.Wait for 1–2 business days and check again.
In ProgressThe payment is being verified by the bank or tax department.Contact the bank if the status does not change soon.

Frequently Asked Questions

Is Challan Identification Number the same as a challan serial number?

No, a CIN is a 20-digit identifier, whereas a challan serial number refers to the unique number printed on the challan.

How long does it take for a CIN to be generated after payment?

The CIN is usually generated instantly after the payment is acknowledged by the authorised bank.

Can I use my CIN to check the status of a GST challan?

Yes, the CIN is essential for tracking GST challan status via the GST portal.

Who should I contact if there is a discrepancy in the CIN details?

Contact the bank where the transaction was made or the concerned tax office directly.

Is the Challan Identification Number mandatory for all tax payments?

Yes, it is mandatory for most tax payments such as income tax, GST, and TDS.

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