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Use the official GST Portal’s Search Taxpayer utility. Open gst.gov.in, choose the GSTIN/UIN search, enter the number exactly as supplied, complete the captcha and select Search. Compare the returned legal name, trade name and status with the supplier’s invoice or onboarding documents. If the result is not active, the identity does not match, or no record appears, pause the transaction and ask the supplier to clarify the discrepancy.
A GSTIN’s appearance or correct-looking characters cannot prove that it belongs to a registered taxpayer or remains active. Only the current government record can show the registration status and related profile information available at the time of the search.
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What “genuine and active” means
Two separate questions are involved:
- Genuine: the number is associated in the GST system with the taxpayer named by the supplier.
- Active: the registration is shown as active when you search it, rather than cancelled or otherwise inactive.
The Search Taxpayer result can also show registration date, business constitution, jurisdiction, business activities and return-filing information. Those fields help you compare the profile with the business you intend to pay. They do not, by themselves, establish that the supplier is financially reliable, has complied with every tax obligation, or is entitled to a particular tax treatment.
Do these 3 things before closing this tab:
1Clear out junk files and repair common Windows errors2Fix the driver behind crashes, sound loss and screen glitches3Repair Windows errors before they cause bigger problemsGSTN’s GSTR-7 Offline Utility manual, last updated 11 December 2025, gives the official route in these words: “You can verify validity of GSTIN from the GST portal: Home > Search Taxpayer > Search by GSTIN/UIN.”
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What to have ready before searching
- The complete GSTIN or UIN copied from the invoice, quotation, purchase order or vendor master record.
- The supplier’s legal name and, if used, its trade name.
- The invoice date and supplier address so you can spot an old or misapplied registration.
- A way to record the result, such as a dated PDF printout or screenshot retained under your procurement record.
Enter every character carefully. GSTN specifically cautions users not to enter the letter O in place of the numeral 0. Copying from a source document is safer than retyping, but still inspect the pasted value for spaces, punctuation or an altered character. If the number came from a scanned document, zoom in and check characters that optical-character recognition may have changed.
How to check a GSTIN on the official portal
- Open the portal. Go to gst.gov.in. The ordinary taxpayer lookup is available from the pre-login area, so you do not need to sign in for a one-off check.
- Choose Search Taxpayer. Select Search Taxpayer from the home page.
- Select GSTIN/UIN search. Use the option to search by GSTIN/UIN, rather than relying on a local accounting or invoice application.
- Enter the number exactly. Paste or type the complete value supplied by the vendor. Check for the O/0 error and remove any accidental spaces.
- Complete the captcha. The pre-login flow requires the displayed captcha before the query can be submitted.
- Select Search. Wait for the taxpayer profile returned by the portal. Do not treat a locally displayed format check as the result of this search.
- Compare the identity. Match the legal name and trade name, where shown, against the supplier’s invoice, contract, bank-account name and other onboarding information.
- Inspect status information. Note the GSTIN/UIN status and any cancellation date displayed. Record the date and time of your check because the portal result describes the registration at that point.
- Save the evidence. Keep the result with the invoice or vendor file, especially when the purchase is material or recurring.
The same process works for a UIN where the portal offers that search option. Always preserve the exact identifier you searched; changing one character can produce a different record or no result at all.
How to read the taxpayer profile
| Result field | What to compare | What it can and cannot establish |
|---|---|---|
| GSTIN/UIN | Compare every character with the number on the invoice and purchase records. | Confirms which identifier the portal searched; it does not alone prove the supplier supplied the number lawfully. |
| Legal name | Match the registered legal entity or proprietor named in your contract and payment records. | A strong identity check. A different name needs explanation, but a mismatch alone is not proof of fraud. |
| Trade name | Compare the storefront, brand or trading name shown on the invoice. | Helps explain why an invoice name differs from the legal entity; confirm the relationship when the names are unrelated. |
| Status | Look for an active status before relying on the GSTIN for a current transaction. | Shows the registration status returned at search time. It is not a certificate of overall tax compliance. |
| Cancellation date, if shown | Compare the date with the invoice date and the date of supply. | A cancellation date can explain why a previously used number is no longer active; it does not by itself determine the tax treatment of every past invoice. |
| Registration date | Check that the supplier was registered when it began issuing the relevant invoices. | Provides chronology, not a guarantee that every invoice is valid. |
| Business constitution and jurisdiction | Compare the entity type and state or jurisdiction with onboarding documents. | Can reveal a wrongly copied number or an unexpected entity; investigate discrepancies before payment. |
| Business activities | Check whether the listed activities broadly fit the goods or services being purchased. | A useful reasonableness check, not proof that a particular supply is taxable in one specific way. |
| Return-filing information | Review filing information when your risk policy requires it. | Shows information available in the portal’s filing table; it is a separate check from confirming that the GSTIN is active. |
Read the result as a snapshot, not as a permanent certificate. A supplier can change registration details after you save a screenshot, so repeat the check for later high-value or recurring payments when your policy calls for a current status.
What to do when the result does not match
The portal shows an active GSTIN but a different name
Stop the approval or payment workflow and ask the supplier for an explanation in writing. Common benign causes include a trade name being used instead of the legal name, a group company issuing the invoice, or a transcription error. Obtain a corrected invoice or documentary explanation before proceeding. Do not label the supplier fraudulent solely because the first comparison failed. Confirm that the contracting party, bank-account holder and GST-registered entity are connected.
The status is cancelled or not active
Do not rely on the number as a currently active registration without clarifying the record. Ask for the supplier’s explanation, check whether the invoice predates the cancellation date, and obtain professional tax advice if the transaction is significant. Keep the original search result so your file shows what was visible when you checked. An old invoice and a current invoice may require different handling, but the portal result alone does not decide the tax treatment.
No taxpayer record is returned
First repeat the search after checking each character, especially O versus 0, and remove hidden spaces. If the corrected value still produces no usable result, ask the supplier to confirm the GSTIN from its registration documents. A portal outage or a technical problem can also prevent a result; use GST Portal help channels rather than treating an unavailable search as proof that the business is fake.
The supplier says the portal is wrong
Request the supplier’s legal name, GST registration evidence and a corrected invoice, then perform a fresh search. For a disputed or technically unavailable result, a qualified tax professional can help interpret the record. The official material does not establish a separate shortcut that bypasses the portal’s status record.
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The number on the invoice differs from the vendor master
Do not silently overwrite either record. Search both identifiers, identify which legal entity issued the supply, and obtain an updated vendor form or invoice. Retain the superseded value in your audit trail so someone reviewing the payment can see what changed and why.
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Use PAN search and the logged-in view when appropriate
GSTN’s Welcome Kit says taxpayer search can also be made using PAN. PAN search is useful when a supplier has given you an incomplete or uncertain GSTIN and you need to identify registrations associated with the taxpayer’s PAN. After identifying the relevant registration, perform the GSTIN-specific comparison before approving an invoice. A PAN result can show more than one registration, so select the state and establishment that actually supplied the goods or services.
The portal guide describes both pre-login and post-login searches. The post-login profile may provide additional information. Use the logged-in view if your role and account permissions require a deeper review, but the pre-login GSTIN/UIN lookup is sufficient for the ordinary initial check and does not require an account.
For filing-related risk checks, inspect the filing table separately. Filing information can add context to a vendor review, but an active status and filing history answer different questions and should not be treated as interchangeable. A filing table entry is not a substitute for matching the invoice identity.
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Accounting packages and offline forms may validate whether characters fit an expected pattern. That is only a local input test. GSTN’s ITC-04 Offline Utility manual explains that validations dependent on online connectivity, including GSTIN validation, occur at upload. A locally accepted number therefore does not establish that the registration exists or is active today.
The same distinction applies to an invoice QR code, a spreadsheet rule or a vendor’s own software message. These tools can reduce typing errors, but the government portal remains the reference for the current identity and status fields. A correctly formatted number can still belong to a different taxpayer, be cancelled, or be mistyped in the invoice.
What the check costs
The ordinary pre-login Search Taxpayer lookup is a free government-portal check; an occasional buyer does not need to purchase a calculator, scanner, ledger product or compliance subscription. Those products may help with other tasks, but none of them independently proves that a GSTIN is genuine and active.
GSTN describes GST Suvidha Provider (GSP) applications as third-party interfaces to GST systems and notes that some additional GSP facilities are paid. A commercial service can charge subscription, per-query or implementation fees, depending on its offering. Before committing, ask whether the service returns the legal name, trade name, status, cancellation information and other fields you actually need, how often its data is refreshed, and what happens when GSTN is unavailable. Use the official portal as the reference when a paid service and the government record disagree.
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| Need | Best-fit approach | Important control |
|---|---|---|
| Checking one invoice or a small number of suppliers | Use the free pre-login Search Taxpayer utility on the GST Portal. | Compare legal/trade names and status manually, then retain dated evidence. |
| Reviewing many suppliers during onboarding | Consider a workflow or software service that can query GSTN records repeatedly. | Confirm the provider’s data source, update timing and the exact identity/status fields returned. Convenience does not replace confirmation against the official record. |
| Integrating validation into procurement or ERP systems | Evaluate a GSP or GSTIN-verification API where the volume justifies technical setup. | Document error handling, outages, authentication, audit logs and a process for rechecking a status before payment. |
FinAGG documents a GSP API that searches GSTN records to validate a GSTIN and retrieve taxpayer details, while Octa GST lists GSTIN status among its registration-information API fields. These examples illustrate the category, not a requirement to use either provider. Compare service terms, security, support, field coverage and refresh timing before adopting any API.
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Checks that should accompany a GSTIN lookup
A genuine, active registration is one control in a broader vendor review. Depending on your transaction and internal policy, also check:
- Whether the invoice’s legal name, address, bank account and purchase order identify the same contracting party.
- Whether the goods or services described on the invoice fit the supplier’s stated business activities.
- Whether the invoice date is consistent with the registration date and any cancellation date shown.
- Whether tax amounts, place-of-supply details and other invoice requirements have been reviewed by someone responsible for your GST compliance.
- Whether the vendor has supplied a contact and escalation route that can be independently confirmed.
- Whether the establishment named on the invoice is the registration whose jurisdiction and details appear in the search.
These checks reduce payment and documentation risk, but they do not turn the Search Taxpayer result into a complete due-diligence report. Do not claim that an active display proves the supplier’s commercial reliability, full compliance or entitlement to a particular input-tax-credit position.
A practical evidence checklist
- Save the GSTIN exactly as received and note where it appeared.
- Record the search date, time, portal route and the status shown.
- Capture the legal name, trade name, registration date and any cancellation date.
- Compare the profile with the invoice, contract, bank details and vendor master.
- Write down any discrepancy and the supplier’s explanation.
- Record who performed and, where relevant, who approved the check.
- Repeat the search before a later high-value payment when your policy requires current status.
Keeping this short audit trail makes it clear which record you checked and prevents a stale screenshot from being mistaken for a current status confirmation. Store evidence under the invoice or vendor identifier, restrict editing access and retain the supplier’s written clarification with the result.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Troubleshooting the portal search
Captcha will not submit
Reload the search page, enter the newly displayed captcha and submit again. Recheck the GSTIN rather than repeatedly sending an unchanged, possibly mistyped value.
The page is temporarily unavailable
Try again later through the official portal. If a payment or onboarding decision cannot wait, escalate to your tax or procurement lead and document that the official status could not be retrieved. Do not substitute a local format check for a live status result.
The supplier gives several GSTINs
Search the exact GSTIN printed on the invoice and confirm that its legal name and jurisdiction correspond to the supplying establishment. If the supplier operates in more than one registration, ask which registration applies to the specific supply and retain that explanation.
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The search returns more information than expected
Use only the fields relevant to your control process and handle taxpayer information carefully. A profile can include business and filing details; access, copy and share them only with people who need them for procurement, tax or audit work.
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Frequently asked questions
Can I check a GSTIN without logging in?
Yes. The official guide describes the GSTIN/UIN lookup in the pre-login area. Enter the identifier and captcha on the GST Portal’s Search Taxpayer page.
Is a GSTIN with the right-looking format automatically valid?
No. A format or character check only tests the input. The official portal lookup is needed to confirm that the identifier is associated with a taxpayer and to view its status.
What if the legal name and trade name are different?
That can be normal, because a business may trade under a brand name. Confirm that the invoice, contract and payment details connect the trade name to the legal entity shown by the portal. An unrelated name requires clarification.
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No. It reports the registration status shown at the time of the search. It does not prove complete filing compliance, financial reliability, or entitlement to a particular tax treatment or credit.
Should I use PAN search instead of GSTIN search?
PAN search can help identify registrations associated with a taxpayer when the GSTIN is uncertain. Once you identify the relevant registration, still search that exact GSTIN and match it to the invoice and supplying establishment.
Does a cancellation date automatically invalidate an old invoice?
Not necessarily. Compare the invoice and supply dates with the cancellation date and obtain qualified tax advice for a material dispute. The portal supplies chronology; it does not decide every historical tax consequence.
Do I need a paid GSTIN API?
Usually not for one-off checks. The free portal is suitable for individual lookups. An API or workflow tool may be justified for large-scale onboarding or ERP integration, but verify its data source, refresh timing, fields, security and outage process.
What should I do if the portal is unavailable?
Try again later, document the failed attempt and escalate if the transaction is urgent. Do not treat a temporary outage or a local format pass as evidence that the GSTIN is genuine or active.
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Bottom line
The reliable test is the official GST Portal’s pre-login Search Taxpayer > Search by GSTIN/UIN lookup. Enter the number accurately, complete the captcha, compare the returned identity with the supplier’s documents, and check the displayed status and cancellation information. Treat a mismatch, inactive result or unavailable search as a reason to pause and clarify—not as a conclusion of fraud based on one failed comparison.
Frequently Asked Questions
Can I check a GSTIN without logging in?
Yes. Use the pre-login Search Taxpayer area on gst.gov.in, enter the GSTIN/UIN and captcha, and submit the search.
Is a correctly formatted GSTIN automatically genuine?
No. Local format checks only test the characters. The official portal record is needed to confirm the taxpayer identity and current status.
What if the portal shows a different legal name?
Pause approval, ask for a written explanation and compare the trade name, contract, bank details and invoice. Correct a transcription or obtain documentation before proceeding.
Does an Active status prove full GST compliance?
No. It is a status snapshot. It does not establish complete filing compliance, commercial reliability or entitlement to a particular tax treatment.
Can PAN search help when I do not know the GSTIN?
Yes. PAN search can identify associated registrations. Then search and verify the exact GSTIN for the establishment that made the supply.
Do I need paid software to verify one supplier?
No. The official pre-login lookup is appropriate for occasional checks. APIs and workflow tools are mainly for repeated or system-integrated screening.
What should I do if the portal is unavailable?
Retry later, record the outage and escalate an urgent decision. Do not substitute a format check for a live status result.
The Bottom Line
Check every GSTIN against the official GST Portal, compare the returned identity and status with the transaction documents, and retain dated evidence. Pause and clarify any mismatch, inactive status or unavailable result.
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