Corrigendum

A corrigendum is an official modification to a published NIT or tender document, issued by the Tender Inviting Authority to correct errors, extend deadlines, relax eligibility, or amend scope, legally binding and forming part of the tender contract.

What is a Corrigendum?

A corrigendum (plural: corrigenda) is the formal mechanism by which a procuring entity amends any aspect of a tender document after publication. It is numbered sequentially (Corrigendum No. 1, No. 2, etc.) and published on the same portals as the original NIT. All registered and interested bidders on the portal receive notifications. Once published, a corrigendum overrides the corresponding provisions of the original NIT and becomes part of the final contract.

The most frequent type is a deadline extension, large tenders routinely see two to four deadline extensions as bidders request more time to gather documents or as the department processes pre-bid meeting inputs. Other common corrigendums include eligibility relaxation (reducing minimum turnover from 150% to 100% of estimated cost, broadening the definition of "similar work"), scope changes (adding or removing BOQ items), EMD amount revisions, specification clarifications, and corrections to errors in the original document.

For bidders, tracking corrigendums is critical because they frequently change the competitive landscape. An eligibility relaxation can bring in 10-15 new bidders who were previously excluded. A scope change can alter total project cost by 10-25%. A deadline extension gives more preparation time. Bidders who miss a corrigendum and bid on the original terms, for example, submitting an incorrect EMD amount that was revised upward, face rejection.

Under CVC guidelines, post-facto changes to eligibility criteria to favour a specific bidder are prohibited. Corrigendums issued after bid opening (to fix evaluation problems) are especially scrutinised. All corrigendums must be published with adequate time for bidders to respond.

Why Corrigendums Matter for Indian Government Suppliers

A corrigendum can turn a tender you were excluded from (too-high turnover requirement) into one you qualify for, or turn a comfortable win into a tight race (new bidders now eligible after relaxation). Monitoring corrigendums on active tenders is not optional, it is a core operational requirement. Automated corrigendum alerts from tender tracking platforms eliminate the manual monitoring burden.

Example

NHAI publishes an NIT for a highway project with a submission deadline of March 15. The original NIT requires bidders to have completed at least one highway project of Rs 900 crore. After the pre-bid meeting, six contractors point out that this excludes many qualified firms who have completed multiple smaller projects of equivalent aggregate value. NHAI issues Corrigendum No. 1 on March 5, relaxing the criterion to: one similar project of Rs 900 crore, or two projects of Rs 600 crore each, or three projects of Rs 450 crore each. Simultaneously, the deadline is extended to March 25 to give newly eligible bidders time to prepare. The corrigendum is published on NHAI's portal, CPPP, and notified to all registered bidders.

Frequently Asked Questions

How many corrigendums can a tender have?

There is no legal limit on the number of corrigendums. Large infrastructure tenders commonly have 3-8 corrigendums before final bid submission. Each extends the effective validity of the tender and resets some aspects of bidder preparation. Multiple corrigendums are a signal of a complex or contested procurement, often reflecting significant bidder interest and active market engagement.

Must I respond to a corrigendum formally?

In most e-procurement portals, bidders must acknowledge corrigendums by clicking "Accept" before they can proceed with bid submission. This creates a legal record that the bidder was aware of all amendments. Failing to acknowledge a corrigendum on the portal may prevent bid submission or result in a submission error. Always check for pending corrigendum acknowledgements before uploading your final bid.

What is the difference between a corrigendum and an addendum?

In Indian procurement usage, both terms refer to amendments to a tender document. "Corrigendum" (correction of an error) and "addendum" (addition of new content) are often used interchangeably. Some departments use "addendum" specifically for new information added (e.g., pre-bid meeting minutes, additional drawings) and "corrigendum" for changes to existing text. Legally, both have the same binding effect when published officially.

Can a corrigendum change eligibility criteria after bid submission?

No. CVC guidelines prohibit changes to eligibility criteria after the bid submission deadline. Corrigendums issued after bid submission that alter evaluation criteria to qualify additional bidders or disqualify submitted bids are irregular. Such corrigendums can be challenged through a CVC complaint or grievance to the department. Post-submission corrigendums are limited to procedural matters like rescheduling the bid opening date.