GST Registration Requirement

The GST registration requirement in government tenders mandates that all bidders supply their valid GSTIN (Goods and Services Tax Identification Number), as government entities are required to deduct GST TDS at source on contract payments, and valid GST registration is mandatory for the vendor to receive payment and file returns under the GST framework.

What is the GST Registration Requirement?

Under the GST Act, any supplier with turnover above Rs 40 lakh (Rs 20 lakh for services, Rs 10 lakh in special category states) is legally required to be GST registered. For government procurement, GST registration is effectively mandatory regardless of turnover, government buyers must issue GST-compliant tax invoices and claim input tax credit, and GeM, e-procurement portals, and payment systems require GSTIN at every step.

The GSTIN format is: 2-digit state code + 10-character PAN + 1-digit entity number + 1 letter 'Z' + 1 check digit (total 15 characters). The state code must match the state of supply for local GST compliance. Vendors operating in multiple states may need multiple GSTINs (one per state of operation above the threshold).

For government contracts, Section 51 of the GST Act mandates that notified government departments and PSUs deduct GST TDS at 2% (1% CGST + 1% SGST or 2% IGST) on payments above Rs 2.5 lakh. This deducted amount is deposited by the government buyer and appears as credit in the vendor's GST return. Vendors must ensure their GSTIN in the bid matches the GSTIN on all invoices, a mismatch blocks payment processing.

Why GST registration requirement matters for Indian government suppliers

GST compliance is a hard prerequisite for government contract participation. Unregistered vendors cannot legally issue GST invoices and cannot receive payments from government agencies that require GST invoicing above prescribed thresholds. For MSMEs in the composition scheme, note that composition dealers cannot supply to government entities under regular contracts, a composition dealer must switch to the regular GST scheme to participate meaningfully in government procurement.

Example

A civil contractor registered in Maharashtra holds GSTIN 27AABC1234D1Z5. When submitting a bid for a CPWD works contract in Delhi, the contractor notes that work execution will be in Delhi, this may require an additional GSTIN for Delhi (07xxxxx) if the contractor establishes a fixed place of business there. For the bid submission, the contractor provides the Maharashtra GSTIN and clarifies in the technical bid that a Delhi GSTIN will be obtained before contract commencement. The CPWD engineering wing accepts this clarification and awards the contract.

Frequently Asked Questions

Is GST registration required even for very small tenders?

For tenders where contract value exceeds the GST threshold (Rs 20-40 lakh), GST registration is mandatory. For tenders below Rs 20 lakh where the vendor is legally not required to be GST registered, some government departments still require GSTIN as a system requirement for payment processing. When in doubt, obtaining GST registration before bidding for any government contract is strongly recommended.

Can a composition scheme taxpayer bid for government tenders?

Composition scheme taxpayers cannot charge GST on their bills (they pay tax at a flat rate without input tax credit). Since government contracts require regular GST invoicing with CGST/SGST breakdowns and GST TDS compliance, composition dealers effectively cannot participate unless they opt out of the composition scheme and register under the regular scheme.

How does GST TDS work in government procurement?

Government departments notified under Section 51 of the CGST Act deduct 2% GST TDS from every payment above Rs 2.5 lakh. The deducted amount is deposited by the government into the vendor's electronic credit ledger. Vendors can claim this credit in their GSTR-2B return and set it off against output GST liability or claim a refund.

What happens if a vendor's GSTIN is cancelled due to non-filing?

Cancelled GSTIN means the vendor cannot issue valid GST invoices. Government buyers will not process payments against invoices from a cancelled GSTIN. This leads to immediate payment blockage on ongoing contracts and bid rejection for new tenders. GST compliance, regular filing of GSTR-1, GSTR-3B, and annual return, is an ongoing obligation, not a one-time requirement.