BUSY is a simple, yet powerful GST / VAT compliant Business Accounting Software that has everything you need to grow your business.
Verifying GST numbers has become a standard business practice to ensure that the businesses you deal with are legally registered and authorized to collect taxes under the Goods and Services Tax regulations. From issuing an invoice and claiming an input tax credit to verifying a supplier, confirming the validity of a GSTIN number through verification checks will help you avoid errors, fraudulent activity and tax law violations.
A correct GSTIN validation process is mandatory to maintain compliance with B2B transactions. Just as e‑invoicing ensures interoperability across the GST ecosystem, GST verification confirms that your trading partners are legitimately registered under the GST law.
Our GST verification tool instantly checks GSTIN validity, helping you issue correct invoices, claim input tax credits, and avoid penalties or fraud. With accurate, real‑time verification, you build trust, ensure accountability, and keep your operations seamless as your business grows.
A GST Number, or GSTIN, is a unique 15‑character alphanumeric code assigned to every business registered under India’s Goods and Services Tax system. It combines the state code, PAN, entity code, a default “Z,” and a check digit for validation.
A GSTIN uniquely identifies each taxpayer under India’s GST system and enables authorities to track their taxable transactions efficiently. For a concise overview of how a 15-character GSTIN is structured, see our GST Number Structure guide.
Get a Free Trial – Best Accounting Software For Small Business
The GST number verification process is simple and can be done online through the GST portal. This helps confirm whether a GSTIN number is active and associated with the correct business.
Here’s how you can verify and check a GST number:
One of the most useful applications of a GST number verification is in validating the B2B invoices. If the GSTIN mentioned on invoice is wrong or inactive, the buyer may face issues during GST return filing or input tax credit reconciliation.
Each invoice should specify the supplier’s correct GSTIN, the client’s correct GSTIN (if applicable), HSN/SAC codes, the tax split-up, and the total taxable value. Businesses should always verify GSTIN before accounting for it in the accounting system or GST returns to avoid discrepancies.
By confirming the GSTIN on the invoice using the GST portal, you can prevent legal complications and ensure the tax collected is remitted correctly. This also reduces the risk of tax evasion and promotes credibility in business operations.
Get a Free Demo – Best Billing and Invoicing Software
Despite the streamlined structure of GSTINs, there are some common issues faced by businesses and taxpayers:
These problems can cause ITC rejection, notices from the GST department, or other legal hassles. Timely verification prevents these consequences.
If a business discovers that a GSTIN was entered incorrectly on an invoice or GST return, they must correct it immediately.
You can rectify the mistake in the GSTR-1 return of the subsequent month or quarter.
Step 1: Go to the “Amend Record Detail – 9A amended B2B TAB” in GSTR-1 for the next filing period.
Step 2: Choose the relevant financial year and locate the invoice number associated with the incorrect GST number. The details of the invoice will auto-populate.
Step 3: Update the GST number and any other necessary details, such as invoice date, value, etc., and then verify and submit the amendment.
Also, taxpayers can re-check the corrected number using the GST portal or other trusted tools for confirmation.
Explore a Free Demo of – Best Inventory Management Software For Small Business
A valid and verified GST number is essential for every business dealing with taxable goods or services in India. From invoicing to return filing and claiming ITC, every step hinges on the authenticity of the GSTIN.
With tools readily available on the GST portal and third-party platforms, verifying a GSTIN before entering it into your systems is easier than ever. Proactively checking GST numbers online helps avoid costly errors, ensures compliance, and builds trust in business transactions. Whether you’re a buyer, seller, or service provider, verifying GST numbers should be a routine part of your financial practices.
BUSY is a simple, yet powerful GST / VAT compliant Business Accounting Software that has everything you need to grow your business.