The Tool Desk
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Send specific, checkable information to the Directorate General of GST Intelligence (DGGI), or to a relevant DGGI/CBIC unit if you know where the suspected activity is taking place. Describe what you observed, when and where it happened, and how officials could verify it. Separate firsthand facts from assumptions: a report raises a concern for examination; it does not establish that a person or business has committed evasion.
Where to report suspected GST evasion
DGGI describes itself as the apex GST intelligence and investigative organisation under the Central Board of Indirect Taxes and Customs (CBIC), within the Department of Revenue. Its headquarters contact details are:
- Address: MTNL Building, Sector-6, Dwarka, New Delhi-110075
- Phone: 011-20892081
- Control room: 011-20892128
- Email: prdg.dggihqrs@gov.in
Check DGGI’s official website for current contact details before sending sensitive information. DGGI’s unit directory lists headquarters, zonal, regional and other units; it is based on the CBIC SAMPARK Handbook 2025. If the activity is tied to a known location, a geographically relevant DGGI or CBIC unit may be the practical route. If you are unsure which unit covers it, contact DGGI headquarters and ask where to direct the information.
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The choice between headquarters and a local unit is mainly a routing question. If the suspected conduct is connected to a particular premises, market, route or region, the directory may help identify a nearby unit. If the activity spans more than one place, or you cannot confidently identify the relevant unit, the national headquarters contact provides another starting point. You do not need to determine which office has jurisdiction before describing what you know; avoid delaying a factual report simply because you are uncertain about the precise unit.
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The official pages reviewed do not establish one exclusive all-India complaint portal or a mandatory complaint form. CBIC Mitra and GSTN technical helpdesks are described as taxpayer or portal-issue support, not as an informant intake service. Do not treat a technical helpdesk as the reporting route for suspected evasion. Those channels address technical or taxpayer-service problems; a report about suspected evasion should be directed to DGGI or an appropriate CBIC formation using current official contact details.
Before sending information, verify the contact on the official DGGI website rather than relying on an old message, an unofficial directory or a contact forwarded by someone else. This is especially important if your material contains personal, business or transaction details. The listed email and telephone numbers are useful starting points, but they should not be treated as a promise that a particular format, secure upload method, acknowledgement or response time is available.
What to put in your report
There is no single universal checklist prescribed on the official pages reviewed. The following structure is practical guidance, not an official form or a statement that every item is legally required. Include only details you know or can explain, and make it easy for an officer to check them. A concise, organised account is generally more useful than a long narrative that mixes fact, rumour and conclusion.
- Identify the subject. Name the business, person, premises or transaction as accurately as possible. Include a GSTIN only if you have a reliable one; do not guess it. If you know several names or trading names, explain which one is associated with the activity and where you encountered each name. A correct business name and location can help identify the subject even if you do not know a GSTIN.
- Give the place and period. Provide the relevant address or location, dates or date range, and whether you believe the activity is ongoing. For goods in transit, include the route, date and other details you actually observed. If you cannot give an exact date, state the period as accurately as you can and make clear that it is approximate. Do not imply that an event is continuing if your information only relates to an earlier period.
- Describe the conduct plainly. Explain what happened rather than leading with a legal conclusion. Possible concerns may involve suspected unregistered taxable supplies, fake invoicing or input tax credit, suppression, or movement of goods without tax documentation. State only what the available facts support. For example, describe the transactions, invoices, goods or pattern that prompted concern instead of asserting that a named person has committed a particular offence.
- Explain why it raised concern. Connect the observed facts to the suspected GST issue. Label any inference as an inference and say what you do not know. A report can explain that a pattern appears inconsistent or raises a question without claiming to know the business’s complete tax position, return filings or intent. Make the distinction visible: what you directly saw, what a record appears to show, and what you think those facts might mean are different kinds of statements.
- Provide verifiable leads. Identify relevant invoices, transaction dates, public listings, shipment or vehicle details, premises, or other records you lawfully possess or know how officials could check. Explain what each item shows. Do not trespass, hack, impersonate someone, or access material without authorisation to obtain evidence. A lead may be useful even if you do not possess a document, provided you can explain what it is and how it could be checked.
- Estimate scale only when you can show the basis. If you state an amount, label it as an estimate and explain the period, records and calculation behind it. If you cannot support a figure, omit it rather than guessing. Distinguish the value of transactions from any estimate of tax, if you are able to do so reliably; do not present one as the other. If the calculation depends on assumptions or incomplete records, say so.
- Choose whether to provide contact details. Give a way to reach you if you want a response or need to ask about possible reward eligibility. If confidentiality matters, state that concern and ask how your identity and information will be handled; do not assume that an anonymous report qualifies for a reward. The official information reviewed does not establish a guaranteed anonymous process, so do not treat silence about your identity as an assurance of confidentiality.
CBIC rules refer to “specific information of evasion” in the context of verification of a specific conveyance. That is a useful standard for writing a report: give particulars that can be checked, not only a general allegation. The more directly a reader can connect your details to a particular business, transaction, place or movement of goods, the clearer the lead is likely to be for an authority assessing it.
How to organise and send the information
- Write a short account first. Start with the business or activity, location and period. Follow with the conduct you observed and the reason it appears suspicious. In the opening paragraph, make clear what you are reporting and whether the events are recent or ongoing. Avoid burying the central point beneath background that is not needed to understand it.
- Separate observation from interpretation. For example, distinguish “I saw goods leave the premises on these dates” from “I believe the sales may not have been reported.” Identify which statements are firsthand, which come from records and which are conclusions. If another person told you something, say that it was reported to you rather than presenting it as your own observation. If you are uncertain about a detail, mark it as uncertain rather than filling in a gap.
- Index supporting material. List each item, its date or source, and the fact it may help verify. Send only material you lawfully have and can safely share. Keep your own copy of the report and any material sent. A simple index can identify an invoice by its date and number, a listing by its publication date and location, or a shipment detail by the observed date and route. Explain whether an item is an original record, a copy or a note of something you observed.
- Use an official DGGI/CBIC contact. Choose headquarters or a relevant unit from DGGI’s official contacts. Check the current details on the official website, especially before transmitting sensitive material. If you do not know the appropriate local office, use the headquarters contact to ask where to direct the information rather than sending it to unrelated helpdesks.
- Ask about handling rather than assuming a procedure. If you need confidentiality or want to understand a potential reward, ask the competent authority how identity, information and eligibility are treated. The official contact information does not by itself establish a guaranteed anonymous process or a reply timeline. Similarly, the existence of an email address does not show that every type or size of attachment can be accepted safely; check the official route for instructions before sending sensitive or bulky material.
Keep the submission factual and proportionate. Avoid circulating accusations publicly or presenting suspicion as a proven offence. The purpose of the report is to give authorities a lead they can assess and verify. A responsible report does not need to resolve every legal or accounting question itself; it should make clear what prompted the concern and what information might help an official check it.
It can help to review the draft before sending it. Check spelling of names and addresses, dates, any GSTIN, and the link between each attachment and the point it is meant to support. Remove statements that you cannot substantiate, or recast them as questions or clearly identified inferences. Do not inflate an estimate to make a concern sound more serious. If you have only partial information, state that limitation directly. An incomplete but accurately described lead is preferable to an apparently precise claim built on guesses.
Use only information you are entitled to access and share. The practical checklist is not permission to enter private premises, intercept communications, misrepresent your identity, or obtain records through hacking or unauthorised access. Do not put yourself or others at risk to collect more evidence. If material contains sensitive details about people or businesses, check the official channel and its current instructions before transmitting it. Do not send passwords or attempt to access an account on someone else’s behalf.
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DGGI says the CBIC Informant Reward Scheme incentivises citizens and trade to report genuine GST evasion. Rewards are payable on recovery of evaded tax and are governed by Board Circular No. 20/2015 dated 31 July 2015, read with Circular No. 36/2018 dated 5 October 2018. Submitting information alone does not guarantee payment. The existence of the scheme should not be read as a promise that every report will lead to a reward, or that a particular outcome, amount or timetable is assured.
The DGGI service page names those circulars but does not set out the full current eligibility criteria, claim process, calculation method or timelines. Consult the current circulars or the competent authority before relying on an expected payment. Do not assume anonymous information is eligible. If reward eligibility is important to you, raise the question through an official route and ask what information and steps are required under the current scheme. Do not rely on informal estimates of what a report might be worth.
The stated condition of recovery matters: a report is an input to an investigation, not a payment trigger by itself. Authorities may need to verify the facts and establish whether tax was evaded; a report may not result in a finding or recovery. The available DGGI information does not give a general percentage, minimum report size, guaranteed claim deadline or standard processing period that can safely be quoted here. Check the current circulars rather than assuming those details.
If you received a suspicious DGGI or CBIC notice
A suspected fake summons or other official communication is a different problem from reporting a business’s tax conduct. Verify the communication through an official route before responding or sharing information. Depending on the issuing platform and communication type, DGGI says the identifier may be a DIN, eOffice Issue Number or GSTN RFN. Its listed verification helpline is 011-20892081; check the official site for current details.
A PIB notice dated 10 February 2024 also advises reporting suspected bogus summons to DGGI/CBIC jurisdictions. Do not rely on phone numbers, email addresses, payment instructions or links supplied only in the suspicious message. Instead, locate the contact details independently through the official DGGI or CBIC website. If the message contains an identifier, use the appropriate official verification route for that type of communication; the identifier type can vary by issuing platform.
Do not assume that a message is genuine just because it uses official names, logos or formal language. Conversely, do not conclude that a communication is fake solely because you do not recognise its format. The practical next step is to verify it through the official route, not to reply using the sender’s unverified contact details. DGGI’s listed verification helpline is the same headquarters phone number above, but confirm that number on the official website before relying on it.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Limits of this guidance
This is practical public-information guidance, not a legal conclusion that particular conduct amounts to an offence. DGGI notes that statutory records, notices and legal positions are governed by the underlying law and issuing authority. For interpretation of a specific notice, circular or legal obligation, rely on the source document or consult the competent authority.
The contact information, unit directory and descriptions of reward arrangements are subject to official updates. The details here do not establish a mandatory reporting format, a guaranteed anonymous submission route, a promised acknowledgement or a reward timetable. Check DGGI’s current official pages and the current CBIC circulars when deciding how to submit sensitive details or when seeking an answer about a particular case.
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Frequently Asked Questions
Where can I report suspected GST evasion in India?
Contact the Directorate General of GST Intelligence (DGGI), or a geographically relevant DGGI/CBIC unit listed in its official unit directory. DGGI lists headquarters phone 011-20892081, control room 011-20892128 and email prdg.dggihqrs@gov.in. Check the official website for current details before sending sensitive information.
Is there a mandatory form or single online portal for reporting GST evasion?
The official pages reviewed do not establish one exclusive all-India complaint portal or a mandatory reporting form. Use an official DGGI/CBIC contact. CBIC Mitra and GSTN technical helpdesks are described as taxpayer or portal-issue support, not informant intake services.
What information should I include in a GST evasion report?
Identify the business, person, premises or transaction; give the location and relevant dates or period; describe the conduct; explain why it raises concern; and provide lawful, verifiable leads such as invoices, public listings, shipment details or vehicle information. Separate firsthand facts from inference, and include an amount only if you can explain its estimate and basis.
Can I report anonymously, and will I receive a reward?
The official information reviewed does not establish a guaranteed anonymous reporting process. DGGI says rewards under the CBIC Informant Reward Scheme are payable on recovery of evaded tax under Circular No. 20/2015 dated 31 July 2015, read with Circular No. 36/2018 dated 5 October 2018. A report alone does not guarantee payment, and you should not assume anonymous information qualifies.
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What should I do if I receive a suspicious GST summons?
Verify it through an official DGGI/CBIC route rather than using contact details or links supplied only in the message. Depending on the communication, the identifier may be a DIN, eOffice Issue Number or GSTN RFN. DGGI lists 011-20892081 as a verification helpline; confirm current details on its official website. A PIB notice dated 10 February 2024 advises reporting suspected bogus summons to DGGI/CBIC jurisdictions.
The Bottom Line
Report suspected GST evasion to DGGI or a relevant CBIC unit with concrete, checkable facts. Identify the subject, place and period; explain what you observed and what officials could verify; and clearly separate evidence from inference. Use only lawfully obtained information, confirm current official contact details, and treat any reward as conditional rather than guaranteed.
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