Bid Bond and Tender Guarantee Guide for South African Tenders
A bid bond, also known as a tender guarantee or bid security, is a financial instrument that a bidder provides with their tender submission to guarantee that they will enter into the contract if awarded. It protects the procuring institution against bidders who withdraw after the tender has closed or refuse to accept the contract. This guide explains when bid bonds are required and how they work.
What Is a Bid Bond?
A bid bond is a guarantee provided by a bidder to the procuring institution, usually in the form of a bank guarantee or surety bond, for a specified amount (typically 2%–5% of the estimated contract value). It remains in force for the bid validity period stated in the tender documents.
If the winning bidder withdraws their bid after the closing date, refuses to sign the contract, or fails to provide the required performance guarantee within the specified period, the procuring institution can call the bid bond and retain the proceeds as compensation for the disruption caused.
When Are Bid Bonds Required?
Bid bonds are most common in construction and engineering tenders, and less common in goods and services tenders. They are typically required for:
- Large construction contracts (typically above R10 million, but varies by institution)
- Complex infrastructure projects where re-tendering would be costly
- International competitive bidding where bidder withdrawal risk is higher
- Projects funded by development finance institutions (World Bank, AfDB) that require bid security as a condition of their financing
How to Obtain a Bid Bond
Bid bonds are issued by major commercial banks or surety companies. The bank issues the bid bond against your banking facility, similar to a performance guarantee. Some tender documents specify an approved list of financial institutions from which bid bonds will be accepted.
Bid bonds are relatively inexpensive compared to performance guarantees — typically 0.5%–1% per annum on the bond value. For a R200,000 bid bond on a R10 million contract, expect to pay R1,000–R2,000 for the validity period.
Return of the Bid Bond
Bid bonds are returned to all unsuccessful bidders promptly after the contract award. The successful bidder's bid bond is typically returned after they have provided the required performance guarantee and signed the contract. Ensure you follow up on return of bid bonds — banks continue charging fees until the original document is returned.
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Frequently Asked Questions
Is a bid bond the same as a performance guarantee?
No. A bid bond secures the tendering phase — it guarantees you will accept the contract if awarded. A performance guarantee secures the execution phase — it guarantees you will perform the contract. They are different instruments issued at different stages.
Can I use the same bank for both bid bond and performance guarantee?
Yes, and this is usually the most efficient approach. Using the same bank means dealing with one credit facility and one relationship. However, some contracts specify approved financial institutions for performance guarantees that may differ from those for bid bonds.
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