How to start a construction contracting business in India: registrations and licences

Choosing a structure

Small civil contractors often start as proprietors or partnerships. For larger contracts, a private limited company or LLP helps with bank guarantees, working capital limits and tender eligibility, which often depend on audited turnover and net worth over several years.

Because contractor enlistment classes depend on past work and financial strength, keep accounts clean from the start. Changing structure later can mean rebuilding your track record in the new entity's name.

Registrations for a contractor

There is no single national contractor licence. Requirements depend on whether you bid for government work, build for private clients or sub-contract for developers. Enlistment classes usually depend on past completed work, financial capacity and technical staff.

GST on construction contracts

The September 2025 rationalisation removed the 12% slab, and most works contracts, including commercial construction, are now taxed at 18% with input tax credit. Residential construction by developers carries 5% without credit, or 1% for affordable housing, but these rates apply to developers selling units, not to every contractor.

Some government and specified works enjoyed concessional rates in the past. Check the current notification for your contract type before quoting, and include a GST change clause in contracts, since rates have moved.

Labour law for construction sites

Construction relies on contract and migrant labour, which the labour codes regulate closely. Under the OSH Code, establishments with 10 or more workers must register, and contract labour licensing applies at 50 or more contract workers. Site safety, welfare facilities and working hours are regulated, with central rules notified in May 2026 and state rules following.

Building and construction welfare cess, earlier levied under separate construction workers laws, is now dealt with under the Code on Social Security; budget for it on project cost. Register workers with the state construction welfare board where required.

Ongoing compliance

Clients deduct TDS on contract payments, so reconcile Form 26AS regularly. Deduct TDS on payments to sub-contractors yourself and file quarterly returns. Generate e-way bills when moving materials above ₹50,000 in value.

Small proprietors and firms with turnover up to ₹2 crore can use presumptive taxation under section 58, subject to eligibility. Others need books and, above the section 63 limits, a tax audit. Keep measurement books and running bills well documented for GST and income tax.

Working as a sub-contractor

Sub-contractors supply works contract services to the main contractor and charge GST, which the main contractor usually claims as credit. Make sure your invoices match the main contract's GST treatment, especially on housing projects where the developer's 5% or 1% rate does not allow credit.

Main contractors increasingly require sub-contractors to show labour code compliance, EPF and ESIC payments and insurance for workers. Keeping these records ready helps you win work and protects you if the main contractor withholds payment over compliance concerns.

Pitfalls for contractors

Disputes over GST changes and labour compliance often surface at final bill stage, so document assumptions in the contract and keep site records current. Insist on written variation orders for every scope change.

• Quoting old GST rates after the 2025 changes.
• Using more than 50 contract workers without a contract labour licence.
• Ignoring construction welfare cess in project costing.
• Not deducting TDS on sub-contractor payments.

Step by step

1. 1Set up the entity

   Proprietorship, partnership, LLP or company based on contract size.

2. 2Register for GST and TAN

   Needed for invoicing and TDS on sub-contractors.

3. 3Register on Udyam

   Useful for tenders, finance and payment protection.

4. 4Enlist for government work

   Apply to CPWD, PWD or other departments in the right class.

5. 5Labour registrations

   Establishment registration, contract labour licence, EPF and ESIC.

6. 6Draft contracts

   Include scope, measurement, payment terms and GST change clauses.

7. 7Set up site compliance

   Safety, welfare facilities and worker records.