The 30% Subcontracting Rule, Explained

The 30% subcontracting condition is the most direct route into big-project work for small and black-owned businesses in South Africa: on large contracts, the winning bidder is required to hand a slice of the work to designated smaller firms. Here’s how it works on both sides of the deal.

What the rule says

Under the Preferential Procurement framework, for contracts above R30 million an organ of state may make it a condition of the tender that the successful bidder subcontracts a minimum of 30% of the contract value to one or more of the designated groups — typically EMEs or QSEs that are at least 51% black-owned, including firms owned by black women, youth, people with disabilities, military veterans, or businesses in townships and rural areas. The tender documents specify which groups apply.

If you’re the main contractor

• Price the subcontracted packages realistically — you remain liable for delivery.
• Identify compliant subcontractors before bidding; many tenders require named subcontractors and their compliance documents in the bid.
• Keep the paper trail — payment to subcontractors is monitored, and substituting them later needs the buyer’s approval.

If you’re the smaller firm

1. Watch awards, not just adverts. The opportunity starts when a big contract is awarded — that’s when the winner needs compliant subcontractors. SA Tenders AI tracks large awarded contracts and surfaces the subcontracting opportunities they carry.
2. Have your pack ready — CSD, tax pin, B-BBEE affidavit, CIDB registration for construction packages (see the document checklist). Main contractors pick the subcontractor whose paperwork is bankable today.
3. Package yourself by trade — “we do the electrical package” wins over “we do everything”.
4. Use the work to climb. Completed subcontracts build the track record that upgrades your CIDB grade, unlocking bigger direct tenders.

Where it goes wrong

• Fronting — lending your B-BBEE status while the main contractor does the work is a criminal offence, and it torches your reputation with buyers.
• Payment terms — negotiate them up front; the standard cascade is payment within 30 days of the main contractor being paid.
• Scope creep without variation orders — get changes in writing, same as any contract.

Your B-BBEE paperwork is the key that opens this door — the B-BBEE guide covers the free affidavit route for EMEs and QSEs.