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GST Number Search & GSTIN Verification Tool

GST Captcha

GST Number Search Tool – Verify GSTIN Online

The GST Number Search Tool by SAG Infotech allows you to perform a quick GST number search online or check a GSTIN to verify whether it is authentic or not. Enter a GSTIN (GST Identification Number) to check key business information such as the legal business name, trade name, registration date, taxpayer type, business constitution, principal place of business, and GSTIN status.

A GSTIN is more than a unique number given to every GST-registered business in India. It identifies a registered taxpayer under the Goods and Services Tax system and holds critical taxpayer information. GSTIN is mandatory to use across invoicing, return filing, input tax credit, e-invoicing, and e-way bill compliance. If you’re unsure about a business’ true identity or want to check potentially fraudulent GST registration, verify the GST number using this GST verification tool.

The official GST Portal also provides a Search Taxpayer facility, which you can use to search taxpayer information by entering their unique GSTIN/UIN.

Check the GSTIN before you buy, sell, claim ITC, or onboard a supplier.

What Is GSTIN?

GSTIN stands for Goods and Services Tax Identification Number. It is a unique 15-character alphanumeric identification number issued to a person or business registered under GST in India.

A single legal entity can have multiple GSTINs if they have separate GST registrations in different states or Union Territories. However, the PAN must be the same for all GST registrations of an entity.

A GSTIN is mandatory on tax invoices, GST returns and other GST-related documents. An incorrect GSTIN can affect tax filing, ITC, invoice reporting, and return reconciliation.

Businesses dealing with registered suppliers, customers, vendors, distributors and other taxpayers can use this GST Number Verification tool to check GSTIN details.

GSTIN Format: GST Number Format Explained

A GSTIN contains 15 characters:

GSTIN contains

First 2 digits: State or Union Territory code.

Next 10 characters: PAN of the registered person or entity.

13th character: Entity/registration number associated with their PAN.

14th character: Default character or taxpayer-category indicator.

15th character: Checksum character used to help identify errors in the GSTIN.

Why Should You Verify a GST Number?

Businesses use GSTINs every day on their invoices, purchase orders, contracts, bills, vendor onboarding documents, accounting records and tax returns. A single incorrect character or order can cause serious compliance issues.

GST number search tool allows you to validate the GST information of a supplier or customer before trading with them.

1

Verify supplier and customer details

Before partnering with a new vendor or supplier, perform a GSTIN verification to confirm that the GSTIN belongs to the correct business.

2

Reduce the risk of incorrect invoices

An incorrect GSTIN on the invoice can lead to mismatches in GST reporting. Check GST number before generating invoices.

3

Support accurate Input Tax Credit processes

GSTIN is used by businesses to verify purchase information and assess Input Tax Credit. Any mismatch can lead to wrong assessment.

4

Identify inactive or cancelled registrations

A GST number check can help determine the registration status of a business, especially when working with older vendors or suppliers.

5

Detect potentially fraudulent GST details

Using the GST number search tool to verify GSTIN authenticity and validity helps avoid dealing with fraudulent entities.

6

Improve vendor onboarding

Use GST number verification for vendor due diligence.

What is the Gen GST Number Search Tool?

The GST No. Search Tool by SAG Infotech is a GSTIN Validator that allows businesses and individuals to check GSTIN authenticity or find more information about a registered taxpayer with a single-click GSTIN search. This tool is 100% free to use and requires no registration or login for GSTIN number search.

Spot fake GSTINs by using the Gen GST Number Verification Tool instantly. Whether you’re a business or a CA professional, this tool helps avoid fraud and maintain compliance.

How to Perform a GST Number Search Online?

The GST Number Search Tool by SAG Infotech lets you verify a taxpayer online easily using their unique GSTIN.

1

Step 1: Enter the GSTIN/UIN of the Taxpayer

Enter the 15-character GST Identification Number of the taxpayer/supplier/vendor.

2

Step 2: Enter the Captcha

Correctly type the characters you see in the captcha image.

3

Step 3: Search

Click the search button to initiate the GST number check.

4

Step 4: Review the taxpayer information

Check the displayed information against the details provided by your vendor. The tool offers the following business details:

  • Legal name of business
  • Trade name
  • Effective date of registration
  • Constitution of business
  • GSTIN status
  • Taxpayer type
  • Aadhaar authenticated? (with date)
  • E-KYC verified?
  • Administrative office address
  • Other office, where available
  • Principal place of business
  • Additional trade name
  • Nature of core business activity
  • Nature of business activities

The GSTN Portal also allows basic taxpayer search without login. If there is a mismatch between the displayed information and the details supplied by the business, verify the same before proceeding further.

What are the features of the Gen GSTIN Search Tool?

The Gen GST Number Search Tool is designed to help businesses search a GSTIN online in minutes for free. The GSTIN Verification Tool includes the following features:

01

Instant GSTIN check online

02

Vendor/supplier verification

03

GST number authenticity check

04

Taxpayer information, including legal name, trade name, type, the constitution of the business, etc.

05

Free to use – no login required

GST Number Search by GSTIN

If you have the business GSTIN, you can search taxpayer information using this unique number. GSTIN is usually available on:

  • Tax invoices
  • Purchase orders
  • Vendor registration forms
  • GST registration certificates
  • E-invoices
  • E-way bill documents
  • Contracts and business correspondence

Always check the GSTIN before onboarding or trading with a new business entity or vendor.

How to report a fake GST number?

Use the Gen GSTIN Search tool to verify GSTIN and report fake registrations.

Found a fake GSTIN? Report it immediately to the GST authorities using the following contact information:

GST Authorities Contact Information

Email: helpdesk@gst.gov.in
Phone: +91 124 4688999 / +91 120 4888999

Alternatively, you can use the GST portal to check all active GST registrations under your PAN. If you find an unknown or fake registration with your PAN, follow these steps to file a complaint immediately:

1

Step 1: Visit https://www.gst.gov.in/. Search Taxpayer > Search by PAN

2

Step 2: Enter the Permanent Account Number (PAN) you want to check. Enter the captcha and click Search.

The page will display all GST registrations under that PAN, along with the GSTIN Status and State of registration.

3

Step 3: Check all GST numbers carefully. If you see a GSTIN you haven’t registered or don’t recognize, click the checkbox next to it to report it to the concerned authorities. Click Submit.

4

Step 4: A pop-up box with the legal name of the selected GSTIN will appear. Provide the requested details for validation and click Submit.

5

Step 5: The portal will send an OTP to your registered email ID and mobile number. Verify the same.

6

Step 6: In this step, you need to undergo e-KYC through Aadhaar verification and provide your consent for GSTN authentication. Once verified, the GSTN will file a report on your behalf against the selected GST registration (GSTIN).

The report is sent to the Central Identities Data Repository for verification and validation.

7

Step 7:Once you complete Aadhaar verification using the OTP sent to your mobile number, the complaint is submitted to the portal.

The system will instantly generate an ARN (Application Reference Number), which can be used to track the application status on the GST portal.

What Information Can You Check Through GSTIN Verification?

A GSTIN verification tool typically provides the following information about a taxpayer or registered business.

Legal Business Name The registered legal name (person or entity) associated with the GSTIN.
Trade Name The registered business or trade name.
Date of Registration The date of registration under Goods and Services Tax (GST).
GSTIN Status Whether the registration is currently active or not.
Business Constitution Whether the taxpayer is registered as a company, partnership, proprietorship or another entity.
Taxpayer Type Regular or composition
Principal Place of Business Registered principal business address
Aadhaar authenticated? Aadhaar verification status and date
E-KYC verified? E-KYC status
Jurisdiction Applicable administrative or jurisdiction information

GST Number Check vs GSTIN Verification

The terms GST number check, GST number search, and GSTIN verification are often used interchangeably, but they can have different meanings.

A GST number search

A GST number search means using a GSTIN to search the taxpayer information.

GST number check

GST number check means checking the validity of a GSTIN based on the information provided by a GSTIN check tool.

GSTIN verification

GSTIN verification is the official process of confirming the GST registration details provided by a business against information available on the GST portal.

When Should Businesses Perform GST Verification?

GST number verification ensures your safety and a reliable start to a long-term partnership. Consider performing a GST number check when:

You onboard a new supplier or vendor.

A customer provides a fresh GSTIN.

A supplier changes its GSTIN.

A GSTIN on a vendor invoice is different from your records.

A vendor provides a GSTIN from another state.

GSTIN looks suspicious or unusually formatted.

Mismatch in a supplier's business name and GST registration details.

When reviewing old vendor master data.

When preparing GST returns.

You’re investigating a potentially fraudulent invoice.

GSTIN validation is free and can be especially valuable for businesses that work with multiple vendors or process a large number of purchase invoices.

Common Mistakes During GST Number Verification

GSTIN errors, whether intentional or simple data-entry mistakes, can create significant compliance or reconciliation problems.

Avoid these mistakes while checking GSTIN:

01

Entering a 14- or 16-character number instead of a 15-character GSTIN.

02

Confusing O with 0.

03

Entering a GSTIN incorrectly when copying from an invoice.

04

Using an old or expired GSTIN.

05

Assuming a valid GSTIN format means active registration.

06

Not comparing the GSTIN legal name with the vendor's provided details.

07

Believing a registered entity can have only one GSTIN.

08

Onboarding a vendor or adding supplier information without GSTIN verification.

Benefits of Using the GSTIN Number Search Tool

GSTIN Number Search Tool from SAG Infotech makes GSTIN verification simple for everyone. Key benefits include:

Quick GST number search

Easy GSTIN verification

No personal details or login required

Valid GST number check

Access to critical taxpayer information

Instant supplier and customer validation

Reduced risk of GSTIN fraud

Support for vendor due diligence

Faster invoice validation

Especially useful for accountants, CAs, tax professionals and businesses

Easier identification of discrepancies before GST filing

Instead of blindly trusting the GSTIN printed on an invoice or another document, businesses can use the GSTIN number check tool to validate the taxpayer details.

GST No. Search for CAs, Accountants and Tax Professionals

Chartered accountants, tax professionals and finance experts frequently need to validate GSTINs when working with multiple clients and suppliers.


This free GST number verification tool helps quickly identify incorrect vendor details before they become serious compliance problems.


Use it for client GST return preparation, purchase reconciliation, vendor onboarding, invoice review, Input Tax Credit verification, client master-data cleanup, GST audit preparation, and compliance checks.

Gen GST Software by SAG Infotech

GSTIN verification is only one part of GST compliance. Businesses and tax professionals also need reliable tools for return filing, billing, e-invoicing, e-way bills, reconciliation and data management.

Gen GST Software by SAG Infotech is helping thousands of CAs and businesses across the country by bringing all GST compliance functions together on one platform.

Gen GST comes in both desktop and online versions and supports GST return filing, billing, e-invoicing and e-way bill activities with seamless processes and a user-friendly interface. Try it today!

Why Gen GST?

Complete GST compliance: return filing, billing, e-invoicing and e-way bills on a single platform.

Unlimited return filing

Online and desktop options

Data integration from Excel, Tally and more

Reconciliation facility

IMS capabilities: Invoice Management System

Regular updates

Secure Java-based architecture

Professional support

For professionals seeking a comprehensive GST software, Gen GST is a stronger choice because it combines GSTIN verification with a wider GST compliance workflow.

GST Number Search – FAQs

Can I find a proprietor's name from a GSTIN?

A GSTIN search tool displays the registered name of a business or entity. For a proprietorship, this may be the proprietor's name, while the trade name may show the title under which the business operates.

Can I find a company's name from its GST number?

Yes. A GSTIN search typically provides the legal name and the trade name associated with that GST registration. This is usually the name of the business or registered taxpayer.

Can I check a business address using GSTIN?

Yes. GST taxpayer information displayed in response to a GST number search often includes the principal place of business as well as additional places of business where applicable.

Can one PAN have multiple GSTINs?

Yes. A PAN can be associated with multiple GSTINs. This usually happens when a business has separate GST registrations in multiple states or Union Territories.

Can two GSTINs have the same business address?

Yes. Two or more GST registrations can be associated with a single address. This happens when multiple distinct businesses operate out of the same address. In such a case, the GSTIN, PAN, legal entity and other registration details can be used to distinguish between taxpayers.

How can I report an unauthorised GST registration linked to my PAN?

If a GST registration appears under your PAN which you do not recognise or haven’t authorised, verify the registration details using the GSTIN check tool and report the issue immediately through the appropriate GST Portal facility.

How can I report a fake GSTIN?

If you suspect that a vendor or customer is using a fake GSTIN, first verify the taxpayer details through the GST number check online system. If the information mismatches or isn’t available, report the matter through the appropriate GST authority.

Is GST number verification free?

Yes. The GST number search tool is 100% free. You do not need to pay anything, provide personal details or log in to search GSTIN.

Does GST online verification prove that a supplier is genuine?

No. GST online verification only validates the information available in a taxpayer’s GST registration, but it does not necessarily mean that a supplier, invoice or transaction is genuine. Businesses should perform independent due diligence where required.

Can GSTIN verification be used for new vendor onboarding?

Yes. Businesses must use GST number verification to check vendor registration information before onboarding. This helps reduce the risk of fraud and improve compliance controls.

What should I do if a supplier's GSTIN and business name do not match?

This can happen for many reasons, including data entry errors. Ask the supplier about the discrepancy. Request supporting GST registration documents if not satisfied with their response.

Can I check a GSTIN without logging into the GST Portal?

Yes. The SAG Infotech GST search facility allows you to find basic taxpayer information using GSTIN without requiring you to create an account or log in anywhere.

Is a GSTIN that follows the correct format automatically valid?

No. A GSTIN can have the correct 15-character structure and can still be invalid, inactive or fake. Checking the taxpayer information and current registration status using the GSTIN tool is the best way to validate this information.

Can I use GSTIN verification before claiming Input Tax Credit?

Yes. Verifying supplier GSTIN is strongly recommended as a part of the Input Tax Credit review process.

Who should use a GST Number Search Tool?

The tool can be useful for Chartered Accountants, GST professionals, businesses, taxpayers, procurement teams, finance departments, accountants and tax consultants to validate a supplier or customer or conduct GST compliance checks.

Verify Before You Transact

A GSTIN on a document like an invoice can be copied, fake, or simply wrong. The GST number check system provides the actual taxpayer information associated with that GSTIN, allowing you to validate business details, identify discrepancies and reduce GST compliance errors.

Use the Gen GST Number Search Tool for quick, simple GSTIN verification in a few clicks. No registration or login required. Always verify before you transact.

Online GST Software Makes Compliance Easy!

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