Contract and Solicitation Amendments Explained

Amendment means two distinct things in Canadian public procurement, and conflating them causes real problems. A **solicitation amendment** changes a tender before it closes — correcting an error, answering questions, revising a requirement, or extending the deadline. It affects whether your bid is compliant. A **contract amendment** changes an agreement after award — adjusting scope, value, schedule or terms. It affects what you are obliged to deliver and what you will be paid. Both are routine. Both carry failure modes that catch suppliers out, and the failure modes are completely different. This guide covers each in turn.

Once issued, an amendment forms part of the solicitation. The tender you downloaded on day one is not necessarily the tender you are bidding on.

Two failures account for most losses here, and both are entirely preventable.

**Not checking for amendments after downloading.** Requirements change, deadlines move, and mandatories are added or reworded. A supplier working from an original package may bid against a requirement that no longer exists — or miss one that now does. Late amendments are common, particularly around the question deadline.

**Not acknowledging amendments where required.** Many solicitations require bidders to formally acknowledge each amendment, often on a specific form or in a specific place. Failing to do so is frequently treated as a compliance failure in itself, regardless of whether your bid actually reflects the changes.

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• ✓Check for amendments when you download, mid-preparation, and immediately before submitting
• ✓Read every amendment in full — do not assume it is minor
• ✓Update your mandatory-requirements list against each one
• ✓Acknowledge each amendment in the form the instructions specify
• ✓Re-check pricing if scope or quantities changed
• ✓Confirm the closing date has not moved, in either direction[/Checklist

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Amendments are usually terse and easy to underestimate. Three habits help.

**Identify what type of change it is.** Administrative corrections, deadline extensions, requirement changes and question-and-answer publications carry very different weight. A requirement change may make you newly eligible — or newly ineligible.

**Read the questions and answers carefully, including questions you did not ask.** These are usually published anonymously to all bidders and are among the most useful documents in a competition. A competitor's question frequently reveals an ambiguity you had read past, and the buyer's answer is binding.

**Trace the change through your bid.** A revised quantity affects pricing. A revised deliverable affects methodology. A revised mandatory affects compliance. Amendments are rarely self-contained, and updating only the section they mention is how inconsistencies get submitted.

Once you hold the contract, amendments become a commercial matter rather than a compliance one. Scope changes, schedule shifts, option years exercised, and value adjustments are all handled by amendment.

The governing principle is straightforward and frequently ignored: **work outside the contract as amended may not be payable.** A verbal instruction from a project officer, however senior and however reasonable, does not amend a contract. Only the contracting authority can, and only in the form the contract specifies.

This produces the most common commercial loss in public contracting — a supplier performs additional work in good faith on a verbal request, then discovers there is no mechanism to pay for it.

**Get changes in writing before performing them.** If additional work is requested, ask for a written amendment. If it is urgent, ask for written confirmation that an amendment will follow, from someone with authority to give it.

**Know who has authority.** The person managing the work day to day is frequently not the person who can amend the contract. Identify the contracting authority at the start, not when a dispute arises.

**Track cumulative change.** Amendments accumulate, and there are limits on how far a contract can be varied before the change is no longer defensible as an amendment to the original competitive award.

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A light process prevents most of the damage on both sides.

For **solicitations you are bidding**, assign one person responsibility for checking the source for amendments on a schedule, and again immediately before submission. Keep a log of each amendment, its date, and what changed in your bid as a result.

For **contracts you hold**, keep a register of every amendment with its number, date, what changed, and the resulting current scope and value. On a multi-year contract with several amendments, nobody reliably remembers the current position from memory — and disputes usually turn on exactly that.

• ✓Named owner for amendment monitoring during a live bid
• ✓Amendment log for each bid: date, change, action taken
• ✓Final amendment check immediately before submission
• ✓Contract amendment register: number, date, change, current scope and value
• ✓Contracting authority identified and recorded at contract start
• ✓Written confirmation obtained before performing any additional work[/Checklist

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Solicitation amendments change the tender you are bidding on. Check for them when you download, during preparation, and immediately before submitting; read them in full; trace each change through your bid; and acknowledge them in the form required, because failing to acknowledge is itself a common compliance failure. Contract amendments change what you must deliver and what you will be paid. Only the contracting authority can amend a contract, and work performed outside it on a verbal instruction may not be payable. Get written confirmation before performing additional work, know who holds authority, and maintain a register so the current scope and value are never a matter of recollection. Neither process is difficult. Both are routinely skipped, and both produce losses out of all proportion to the effort they require.