RFQ vs ITT vs RFP: the tender types Canadian contractors need to know (2026)

Public-sector procurement runs on an alphabet of document types, and the letters matter. An ITT, an RFP, and an RFSO are not interchangeable formats for the same thing — they tell you how the buyer will evaluate you, what you're allowed to propose, and whether there's even a contract at the end. Get the type right and you respond correctly; misread it and you can write a beautiful proposal for a process that only scores price.

Here's the plain-language version of the types you'll actually encounter.

The two big families: tenders and proposals

Almost everything sorts into one of two evaluation philosophies:

• Tenders — the specifications are fixed, the quantities are defined, and the main variable is price. The lowest compliant bid usually wins. Construction work, where the drawings and specs leave little to interpret, often runs this way.
• Proposals — the buyer describes a problem or an outcome and asks how you'd solve it. Price is one factor among several: your methodology, experience, team, and schedule are all scored. Complex or service-heavy work tends to run this way.

The distinction matters because it changes where you spend your effort. On a tender, the work is in sharpening the number and proving compliance. On a proposal, the number alone won't carry you — the written response does real work.

Invitation to Tender (ITT)

The classic construction format. Specifications are crystal clear, and the buyer is buying a defined scope at the best price. Evaluation is lowest compliant bid — meet every mandatory requirement, then the lowest number wins. The risk here isn't usually the writing; it's an arithmetic error or a missed mandatory that gets an otherwise-winning bid thrown out as non-compliant.

Request for Quotation (RFQ)

Used for lower-dollar, well-defined purchases where price is the main basis of evaluation. Lighter-weight than a full tender, faster to respond to, and common for smaller or repeat needs.

One trap worth flagging: RFQ is ambiguous. Most often it means Request for Quotation (price). But some buyers use RFQ — or RFSQ / RFpQ — to mean Request for Qualifications, a prequalification step that shortlists capable firms before any pricing. Read the document: if it asks for a price, it's a quotation; if it asks you to demonstrate capability with no price, it's a qualification step.

Request for Proposal (RFP)

Used when the how matters as much as the how much. The buyer states an outcome and invites you to propose a solution; submissions are scored against published criteria — technical approach, relevant experience, team, schedule, and price together. This is where a well-written, compliance-aware proposal earns its keep.

You'll also see NRFP (Negotiated RFP), a variant that lets the buyer negotiate with one or more shortlisted proponents rather than simply accepting a submission as-is.

Standing offers and supply arrangements (RFSO / RFSA)

These set up pre-qualified supplier lists for repeat buying, so the buyer doesn't run a full competition every time.

• A Request for Standing Offer (RFSO) establishes a standing offer — your offer to supply at pre-arranged prices and terms. It is not a contract: the buyer forms a contract each time it issues a call-up against it, when and if it needs the work.
• A Request for Supply Arrangement (RFSA) establishes a pool of pre-qualified suppliers, then the buyer solicits bids from that pool for specific requirements. More flexible than a standing offer when the details vary call-to-call.

Winning one of these doesn't guarantee a dollar of work — but it gets you onto the list that future work is drawn from, which is its own kind of advantage.

RFI and prequalification (RFI, RFEOI)

Not every posting is a bid. A Request for Information (RFI) or Request for Expressions of Interest (RFEOI) gathers market input or gauges interest before a real solicitation. There's no contract and usually no price — but responding puts you on the buyer's radar and can shape the requirement that follows.

Why the type changes how you bid

Read the type first, because it tells you where the win is:

• ITT / RFQ (price): the win is a clean, compliant, sharply-priced number. Triple-check the math and every mandatory.
• RFP / NRFP (criteria): the win is in the response. Answer every evaluated criterion, in the buyer's order, with evidence.
• RFSO / RFSA (lists): the win is getting on the list; the revenue comes later through call-ups and second-stage bids.
• RFI / RFEOI (information): no win to score — but a low-cost way to get known and influence the eventual scope.

The mechanics of putting a strong response together — registration, mandatory requirements, and the proposal itself — are covered province by province in our Alberta, Saskatchewan, and British Columbia bidding guides. Once you've decided a posting is worth pursuing — see our go/no-go framework — the document type tells you how to shape the response.

One feed, with the type front and centre

Cornerstone Contracts pulls postings from the federal, provincial, and municipal portals every day and scores each against your trade, service area, and typical project size — so you spend your time on the few that fit instead of decoding every posting that doesn't.

Browse the open construction tenders in Alberta, Saskatchewan, or British Columbia right now — free, no account. Then start free to see them scored to your profile, with a compliance-aware draft proposal for any tender you choose to pursue.

Procurement terminology and thresholds vary by jurisdiction and change over time. Always rely on the wording of the specific solicitation document.