Two-envelope evaluation vs BAFO

Both methods try to stop price from contaminating quality scoring — but they work at opposite ends of the process. Two-envelope evaluation controls how bids are opened; BAFO controls how the process ends.

Two-envelope evaluation

Bidders submit a technical envelope and a financial envelope separately. The buyer scores technical first, with the financial envelopes still sealed; financial envelopes are opened only for bids that pass the technical threshold. Used on RFPs where quality must dominate — consulting, design, complex services.

BAFO (best and final offer)

After an initial round of proposals — often with negotiations or clarification rounds — shortlisted bidders are invited to submit their best and final offer. The buyer then evaluates the final round. Common in complex procurements where the buyer wants to negotiate scope and price before locking in.

How they combine

They are not mutually exclusive: a Canadian RFP can use two-envelope scoring in round one and a BAFO round for the shortlist. Read the evaluation section of the tender carefully — the method dictates what you put in which envelope and when you're allowed to improve your price.

Common questions

Can I change my price in a two-envelope process?

Only through the buyer's formal addenda/clarification process — you price the financial envelope as of submission, and it stays sealed until technical scoring is done.

Does BAFO mean the lowest BAFO wins?

Not necessarily — evaluation criteria still apply; BAFO is a round of submissions, not a reverse auction. See BAFO meaning for the full mechanics.

Related definitions

Two-envelope evaluation · BAFO · ITT vs RFT · RFQ vs RFP