Common Reasons Bids Are Disqualified: Bidders' Top Mistakes and How to Fix Them

Every year, hundreds of millions of rands in government contracts are awarded — or not — based on compliance. Disqualification is the fastest way to waste the investment of preparing a bid. The National Treasury and provincial audit outcomes consistently highlight the same cluster of fatal mistakes. If you can eliminate these, you dramatically increase your success rate.

1. Late submission

This tops the list. A bid delivered after the specified closing time must be returned unopened. Logistics failures — traffic, courier delays, or misreading the deadline — carry zero weight. Always aim to submit the day before, and if possible, have a backup person ready to hand-deliver.

2. Non-attendance of compulsory briefings

If the tender advert says “compulsory,” it is not negotiable. Bidders who fail to sign the attendance register at the exact time and venue are disqualified. Sometimes briefings are held at remote project sites; plan travel with a large buffer.

3. Missing or invalid tax compliance verification

A bidder must produce a SARS Tax Compliance Status PIN and reflect a “Compliant” status on the CSD. If the PIN is invalid, expired, or the tax matters are not in order at the time of evaluation, the bid is out.

4. Expired or improperly substantiated B-BBEE certificates

Bidders claiming preference points for B-BBEE must attach a valid (less than 12 months old) certificate or sworn affidavit. A certificate that does not match the CSD record, or an uncertified copy, will lead to the points being zeroed, and if points were essential, the bid may be declared non-responsive.

5. Incomplete SBD forms

SBD 4 (declaration of interest), SBD 8 (past SCM practices), and SBD 9 (independent bid determination) are often overlooked. Blank spaces or “N/A” where disclosure is required can be interpreted as non-disclosure. Fill every field honestly, and sign every required signature.

6. Omitted or incorrect pricing schedules

Any alteration to the bill of quantities, omission of a line item, or a conditional offer (such as “price valid for 10 days instead of the required 90 days”) disqualifies the bid. Use the exact spreadsheet provided; do not hide formulas.

7. Failure to meet minimum functionality

If the tender requires three years of experience and the bidder demonstrates only two, the evaluators have a duty to disqualify. No amount of explanation post-submission can remedy it.

8. CSD non-compliance

A supplier number that is not validated by the National Treasury or has discrepancies with the bidding entity’s details causes instant disqualification. Keep your CSD profile updated and compliant.

9. Lack of required samples or demonstrations

Some tenders for goods require samples to be submitted by a certain date. Missing the drop-off deadline sinks the bid.

10. Misrepresentation and fraud

Any material misrepresentation, whether about B-BBEE, past performance, or qualifications, leads to disqualification and referral to the authorities for prosecution. Transparency is the only safe path.

The fix

A disciplined internal review using a compliance checklist, based on the tender’s returnable schedule, catches most of these errors. Procure a second, independent reviewer — fresh eyes see what stressed bid teams miss.

In a space where margins are tight, simply not being disqualified is a competitive advantage.