GST Registration in Bihar:
Threshold Limits, State Rules & How to Apply
Everything a Bihar-based business needs to know — from ₹40L/₹20L limits to the step-by-step REG-01 application process on gst.gov.in.
Goods Threshold
(Bihar)
Services Threshold
(Bihar)
Govt Registration
Fee on gst.gov.in
Typical Approval
Timeline
- Bihar is a Normal Category State — threshold limits are ₹40 lakh for goods and ₹20 lakh for services. Verify at gst.gov.in.
- GSTIN state code for Bihar is 10 — your 15-digit GSTIN will begin with "10" as the first two digits.
- Registration is mandatory regardless of turnover for inter-state suppliers, e-commerce sellers, and several other categories under the CGST Act, 2017.
- The application is free — apply directly via gst.gov.in using Form REG-01. Aadhaar-based e-KYC is mandatory as of 2025.
- Penalty for non-registration: ₹10,000 or 10% of the tax due (whichever is higher); 100% of tax due in cases of intentional evasion.
GST registration in Bihar follows the Central Goods and Services Tax (CGST) Act, 2017, with Bihar classified as a normal category state — not a special category state. This single classification determines which threshold limits apply to your business and what compliances you must follow. Whether you're a trader in Patna, a manufacturer in Muzaffarpur, or a service provider in Gaya, understanding the Bihar-specific GST registration rules is the first step toward staying legally compliant and accessing input tax credit (ITC). This guide covers every aspect of GST registration Bihar businesses need — threshold limits, mandatory categories, documents, the step-by-step application process, and post-registration obligations.
1 Bihar's Status Under GST: Normal Category State
Under the GST framework, states are classified into two categories: Normal Category States and Special Category States. Bihar falls squarely in the Normal Category, which means the standard, higher threshold limits apply to businesses operating here.
Special category states — such as Arunachal Pradesh, Manipur, Meghalaya, Mizoram, Nagaland, Sikkim, Tripura, Himachal Pradesh, and Uttarakhand — have lower GST thresholds due to economic and geographical considerations. Bihar has no such status. Businesses in Bihar benefit from the full ₹40 lakh goods threshold introduced with effect from 1 April 2019 under Notification No. 10/2019-Central Tax.
2 GST Threshold Limits in Bihar: Goods vs Services
The threshold limit determines whether GST registration is mandatory based on your annual aggregate turnover. For Bihar, the limits differ depending on whether your business primarily supplies goods or services.
| Business Type | Threshold (Bihar) | Effective From | Notes |
|---|---|---|---|
| Exclusive Goods Supplier | ₹40 Lakh / year | 1 April 2019 | Excludes certain notified goods (pan masala, tobacco, ice cream) |
| Service Provider | ₹20 Lakh / year | Original GST rollout (July 2017) | Applies uniformly; no change post-2019 |
| Mixed Supplier (Goods + Services) | ₹20 Lakh / year | — | If any portion is services, ₹20L limit applies |
| Composition Scheme (Goods) | Up to ₹1.5 Crore | 1 April 2019 | Optional; quarterly filing; no ITC |
| Composition Scheme (Services/Mixed) | Up to ₹50 Lakh | — | Fixed rate of 6% (3% CGST + 3% SGST) |
⚠️ Aggregate Turnover is PAN-based, not state-based. If your business operates in multiple states under the same PAN, turnover from all states is aggregated when calculating the threshold. A Bihar business with turnover in Jharkhand or UP counts both together. Verify the calculation at gst.gov.in.
3 Who Must Register for GST in Bihar Regardless of Turnover
Certain categories of persons and businesses are required to obtain GST registration regardless of whether their annual turnover crosses the ₹40 lakh or ₹20 lakh threshold. These categories apply uniformly across Bihar and all other states.
📦 Supply-Based Mandatory Registration
- Inter-state suppliers of goods (any turnover)
- E-commerce sellers on Amazon, Flipkart, Meesho, etc.
- E-commerce operators (platform owners)
- Casual taxable persons supplying at trade fairs/exhibitions
- Non-resident taxable persons
⚙️ Compliance-Based Mandatory Registration
- Persons paying tax under Reverse Charge Mechanism (RCM)
- TDS deductors under GST
- TCS collectors (e-commerce operators)
- Input Service Distributors (ISD)
- Agents making taxable supplies on behalf of principals
📌 Note for service providers supplying inter-state: Unlike goods suppliers, service providers making inter-state supplies enjoy a small exemption — registration is not mandatory if aggregate turnover is below ₹20 lakh (₹10 lakh for special category states). However, GST registration Bihar traders dealing in goods have no such exemption for inter-state trade.
4 Documents Required for GST Registration in Bihar
The documents needed vary by business constitution (proprietorship, partnership, LLP, private limited company, etc.). The following checklist covers the core requirements for the most common business types operating in Bihar.
| Document Category | Proprietorship | Partnership/LLP | Pvt Ltd Company |
|---|---|---|---|
| PAN Card | Owner's PAN | Firm's PAN | Company PAN |
| Aadhaar Card | Owner's Aadhaar | All partners' Aadhaar | All directors' Aadhaar |
| Business Proof | — | Partnership Deed | Certificate of Incorporation + MOA/AOA |
| Address Proof (Principal Place) | Electricity bill / Rent agreement / Property tax receipt / NOC from owner | ||
| Bank Account Proof | Cancelled cheque OR first + last page of bank passbook/statement | ||
| Photographs | Passport-size photo of proprietor/partners/directors | ||
| Authorisation | — | Letter of Authorisation | Board Resolution for authorised signatory |
| Digital Signature (DSC) | Not mandatory | Class 2 DSC (for LLP) | Class 2/3 DSC mandatory for company directors |
All documents must be in PDF or JPG format, under 100 KB per file, before uploading on the GST portal. CBIC Instruction No. 03/2025-GST (dated 17 April 2025) mandates strict document and place-of-business verification by GST officers. Ensure the business address on your documents exactly matches what you enter in the application.
5 Step-by-Step: How to Apply for GST Registration in Bihar
The entire GST registration process for Bihar businesses is online via gst.gov.in. There is no offline filing option and no government fee. The process has two main stages — Part A (TRN generation) and Part B (full application).
Visit gst.gov.in → Services → Registration → New Registration
Select "Taxpayer" in the "I am a…" dropdown. Choose Bihar as your state and enter the relevant district (e.g., Patna, Gaya, Muzaffarpur). Fill in your legal name as per PAN, PAN number, active mobile number, and email address.
Part A — OTP Verification & TRN Generation
Verify via separate OTPs sent to your mobile and email. On success, the portal generates a Temporary Reference Number (TRN). This TRN is valid for 15 days. Save it immediately — you'll use it to log back in and complete Part B.
Part B — Business Details, Promoters & Documents
Log in using the TRN. Fill in the full Part B of REG-01: business trade name, nature of business activity, details of all promoters/partners/directors, principal place of business in Bihar, bank account details, and nature of goods or services (HSN/SAC codes).
Upload Supporting Documents
Upload all required documents (PDF/JPG, max 100 KB each) — PAN, Aadhaar, address proof for your Bihar premises, bank account proof, and entity constitution documents. For companies and LLPs, also upload the Board Resolution / Authorisation Letter and DSC.
Aadhaar Authentication (Mandatory from Feb 2025)
As per GSTN Advisory dated 12 February 2025, Aadhaar-based biometric or OTP authentication is mandatory for all promoters/partners/directors. An authentication link is sent to the Aadhaar-linked mobile. ARN generation happens only after this step is completed for all applicable persons.
Submit via EVC / DSC → Receive ARN
Submit the application using Aadhaar-based e-sign (EVC) or DSC (mandatory for companies). On successful submission, the portal issues an Application Reference Number (ARN) via email and SMS. Use the ARN to track your application status at gst.gov.in.
GST Officer Review → GSTIN Issued
GST officers review the application. Physical verification of your Bihar premises may be conducted per CBIC Instruction No. 03/2025-GST. If documents are in order, a 15-digit GSTIN is issued within 2–7 working days. Download your GST registration certificate (REG-06) from the taxpayer dashboard under Services → User Services → View/Download Registration Certificate.
📌 Bank Account Requirement Post-Registration: As per GSTN Advisory dated 20 November 2025, valid bank account details must be furnished within 30 days of GST registration (or before filing GSTR-1/IFF, whichever is earlier) to avoid suspension of the GSTIN.
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Get a Free Consultation → View GST Services6 Composition Scheme for Bihar Businesses: Who Can Opt In?
The Composition Scheme is an optional, simplified tax arrangement available to small businesses in Bihar whose turnover is within defined limits. It allows businesses to pay GST at a flat rate on turnover, file simplified quarterly returns (CMP-08), and avoid complex invoice-level reconciliation. The tradeoff: registered dealers under the scheme cannot claim Input Tax Credit (ITC).
| Category | Turnover Limit | GST Rate | Eligible? |
|---|---|---|---|
| Manufacturers & Traders (Goods) | Up to ₹1.5 Crore | 1% (0.5% CGST + 0.5% SGST) | ✅ Yes |
| Restaurants (not serving alcohol) | Up to ₹1.5 Crore | 5% (2.5% CGST + 2.5% SGST) | ✅ Yes |
| Service Providers / Mixed Suppliers | Up to ₹50 Lakh | 6% (3% CGST + 3% SGST) | ✅ Yes |
| Inter-State Suppliers | Any | — | ❌ Not eligible |
| E-Commerce Sellers | Any | — | ❌ Not eligible |
| Manufacturers of Notified Goods (tobacco, pan masala, ice cream) | Any | — | ❌ Not eligible |
Composition dealers in Bihar file quarterly CMP-08 for tax payment and an annual GSTR-4 return. They cannot issue tax invoices or collect GST from customers — only bill of supply is permitted. Opt for the Composition Scheme via Form CMP-02 on the GST portal within 30 days of the beginning of the financial year, or at the time of fresh GST registration.
7 E-Way Bill Rules Specific to Bihar
Bihar has its own intra-state e-way bill threshold, which differs from the standard ₹50,000 inter-state rule under the central GST framework. This is a frequently overlooked Bihar-specific compliance point for goods transporters and traders.
🚛 Inter-State Movement (Applies to All States)
- Mandatory for goods valued above ₹50,000
- Applies regardless of mode of transport
- Generate at ewaybillgst.gov.in
📦 Intra-State Movement in Bihar
- Bihar's intra-state e-way bill threshold: ₹1,00,000
- Higher than the standard ₹50,000 — movement of goods below ₹1L within Bihar does not require an e-way bill
- Verify current rules at ewaybillgst.gov.in
8 Penalties for Non-Registration & Post-Registration Compliance
Failure to obtain GST registration once turnover exceeds the threshold — or when mandatory categories apply — attracts significant financial penalties under the CGST Act, 2017.
⚠️ Penalty for Failure to Register
The penalty is ₹10,000 or 10% of the tax amount due (whichever is higher). If evasion is intentional, the penalty rises to 100% of the tax due — with no upper limit. Goods can also be seized by GST officers in cases of detected evasion.
Post-Registration Compliance Calendar for Bihar Businesses
Interest on late payment of GST is charged at 18% per annum. Late fee for delayed GSTR-3B filing applies at ₹50 per day (₹20 per day for nil returns). The GST department has integrated AI-based tracking tools to detect unregistered businesses that cross the turnover threshold, making voluntary compliance more critical than ever for Bihar businesses.
9 FAQs: GST Registration in Bihar
No. Bihar is a normal category state under the GST framework. The standard threshold limits apply — ₹40 lakh for exclusive goods suppliers and ₹20 lakh for service providers and mixed suppliers. Special category states such as Manipur, Mizoram, Nagaland, and Tripura have lower thresholds of ₹20 lakh and ₹10 lakh respectively. Verify current classification at gst.gov.in.
For service providers in Bihar, GST registration becomes mandatory when annual aggregate turnover exceeds ₹20 lakh. This threshold is the same as for most normal category states. Mixed suppliers (both goods and services) are also subject to the ₹20 lakh limit. There has been no change to this service threshold since the GST rollout in July 2017.
Typically 2–7 working days after the Application Reference Number (ARN) is generated and Aadhaar authentication is completed. If documents are complete and matching, the process is faster. If the GST officer raises a query or schedules a physical verification of your Bihar premises, resolution adds 5–7 more days. Track status using the ARN at gst.gov.in → Services → Track Application Status.
Yes. Any person or business — even one with turnover below ₹40 lakh or ₹20 lakh — can voluntarily register for GST in Bihar. Voluntary registration allows the business to claim Input Tax Credit on purchases, issue valid GST invoices, conduct inter-state trade freely, and improve credibility with large buyers who require GSTIN-registered vendors. The application process is identical to mandatory registration on gst.gov.in.
The penalty for non-registration after crossing the mandatory threshold is ₹10,000 or 10% of the tax due — whichever is higher. Where evasion is intentional, the penalty equals 100% of the tax due with no cap. Additionally, goods in transit can be detained and seized. The GST department uses AI-driven tools in 2026 to identify businesses that exceed thresholds without registering. Registration should be completed promptly once the limit is crossed.
Yes. As per the GSTN Advisory issued on 12 February 2025, Aadhaar-based authentication is mandatory for all applicants at the time of GST registration — including proprietors, partners, and directors. The system sends an authentication link to the Aadhaar-linked mobile number. The ARN (Application Reference Number) is generated only after this authentication is successfully completed for all applicable persons.
10 Conclusion: Getting GST Registration in Bihar Right
GST registration in Bihar is governed by standard CGST Act rules with the ₹40 lakh threshold for goods and ₹20 lakh for services — both well above what special category states apply. For most Bihar traders, manufacturers, and service providers, the question isn't just whether to register, but when and how to do it correctly the first time to avoid officer queries, delays, or physical verification notices.
The online REG-01 application on gst.gov.in is straightforward but leaves no room for document mismatches. Aadhaar authentication for all promoters, correct HSN/SAC code entry, matching business address documents, and prompt bank account furnishing post-registration are the four areas where most GST registration Bihar applications face delays. Getting each of these right from the outset means your GSTIN is issued within days, not weeks.
Whether you're a first-time applicant or expanding your registered presence to a new Bihar location, the compliance framework demands precision. Validraft's legal team has handled GST registration Bihar applications across business types — from sole proprietorships in Patna to multi-branch manufacturers in Muzaffarpur. Reach out via the contact page if you need end-to-end support with documentation, application filing, or post-registration return compliance.
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Start Your GST Registration → GST Filing Services📎 Authoritative Sources
- → gst.gov.in — Official GST Portal: Registration, Returns & Compliance
- → CBIC — FAQs and User Manual on New GST Registration
- → gst.gov.in — Registration User Guide (Normal Taxpayer)
- → ewaybillgst.gov.in — E-Way Bill Portal (State-Wise Thresholds)
- → cbic-gst.gov.in — Central Board of Indirect Taxes & Customs