What you are really buying
Consulting engagements are bought under an asymmetry the buyer rarely prices: the firm has run hundreds of pursuit processes and the client has bought a handful of engagements. Left unmanaged, the asymmetry plays out the same way each time. The firm reaches the sponsor early, helps draft the problem statement, and by the time a competition is run the scope already fits one methodology. This playbook is designed to keep the problem definition, the competition and the contract in the buyer's hands. It complements the Before Hiring a Consulting Firm guide, which covers what to check in a proposal before signature; the playbook covers the whole process, from deciding whether you need a firm at all to governing the engagement and the extension decision that firms plan for from day one. It applies to strategy, transformation and technology engagements alike, and most of it applies whether the fee is six figures or eight. Where a single firm is unavoidable, for continuity or genuine urgency, Steps 1, 4, 5 and 7 still apply and carry most of the value.
Step 1: Write the problem statement before a firm can
Draft one page internally, before any firm is contacted, answering four questions. What specifically is failing or unknown, with evidence rather than sentiment. What decision or change the work must enable, stated as something the organisation will do differently. What "done" looks like, in deliverables and in outcomes, and how the two differ. What constraints the work must respect: data that cannot leave, teams that cannot be loaded, dates that are real. Firms are skilled at reframing problems towards their strongest practice areas, and the only durable defence is a written statement that predates their involvement. Have the executive sponsor sign it. If the sponsor and the eventual budget holder are different people, both sign, because engagements collapse in month two over exactly that gap. When firms later propose to "refine the scope during a diagnostic phase", this page is what keeps refinement from becoming redefinition.
Step 2: Test whether you need a firm at all
Run the make-or-buy question honestly before the market runs it for you. The In-House vs Consulting comparison works through the economics; the short test is three questions. Does the capability exist internally but lack capacity? Then backfilling internal people is usually cheaper and keeps the knowledge. Is the need political rather than analytical, an independent badge to carry a conclusion leadership has already reached? Then name that honestly and buy the smallest credible version of it. Or is there a genuine capability gap on a temporary problem, which is the case consulting is actually for? Weigh the alternatives seriously: an interim executive for a line role, a contractor team for delivery capacity, or advisory input to sharpen a decision your own team then executes. Each costs a fraction of a full consulting team. Price the internal option honestly too: secondments carry a cost in delayed work elsewhere, and the comparison only means something when both sides carry their true costs. If the answer is still a firm, this step has produced the sentence the invitation needs: what only a firm can supply here, and why.
Step 3: Design a competition firms cannot steer
Invite three firms, or four when the work is large enough that a boutique and a global firm should both be in the field. Send an identical brief built from the Step 1 page, with the evaluation criteria and their weights published in the brief itself, and score responses on the RFP Scoring Sheet so every proposal is marked against the same anchors by the same panel. Set rules that protect comparability: all questions answered through a shared channel visible to every bidder, no private access to the sponsor during the process, page limits on responses, and fee breakdowns in a mandatory format of team member, grade, day rate and days by phase. Firms that are strong on delivery accept these constraints without complaint. Firms that push hardest to socialise with executives mid-process are telling you where their real strength sits. Keep the timeline tight: six weeks from brief to decision is enough for anything short of a mega-programme, and long processes advantage the largest business-development budgets.
Step 4: Take the proposal apart before you admire it
Score proposals with the Consulting Proposal Review Template and check them against the Consultant Proposal Checklist rather than judging by overall impression, because proposals are written to be read in the aggregate and to impress there. Two checks belong outside the document. Take references yourself, by phone, and ask each firm for one client whose engagement ran over budget or over time; how the firm behaved in the difficult month is the reference that matters, since every firm performs well when the work is going well. And ask who wrote the proposal: if the delivery team cannot answer detailed questions about its own approach, you have learned who will actually be thinking about your problem. Inside the document, the elements that predict engagement quality are specific.
| Proposal element |
What to verify |
Warning sign |
| Named team |
CVs, grades and committed days of the people who will deliver |
"Team to be confirmed", or partners at token allocation |
| Approach |
Steps written for your problem statement |
Methodology pages that could be sent to any client |
| Fees |
Rate-by-grade breakdown with assumptions listed |
A single blended figure with assumptions "to be agreed" |
| Dependencies |
What they need from you, sized in your people's days |
Client-side effort left vague, then invoiced as delay |
| Knowledge transfer |
A deliverable with acceptance criteria and a date |
A closing workshop mentioned in one sentence |
Step 5: Negotiate the team before the rate
Rate cards attract negotiating attention because they are legible, but the variable that moves engagement value is who turns up. Negotiate named individuals into the contract with a right of approval over substitutions and a fee reduction if a named person leaves within an agreed period. Firms resist this, and the resistance is informative: a firm that cannot commit its named team in week zero will certainly not commit it in month four. Fix the partner's committed days per month and how they are evidenced. Then negotiate structure before discount: phase the engagement with a break clause after the diagnostic, so the firm re-earns the delivery phase with its own findings; cap expenses; define what constitutes a change request and who can authorise one, because scope growth on consulting engagements is invoiced, not absorbed. Only then discuss rates, where the credible move is trading duration or volume for rate rather than asking for goodwill.
Step 6: Set the working rhythm and the evidence of progress
Agree governance before kick-off, while negotiating power is still yours. A weekly working session with the delivery team and a monthly steering review with the partner present, run to an agenda you set. Deliverables reviewed in draft at agreed checkpoints rather than presented finished, because a polished document is harder to challenge than an honest interim one. Progress measured against the Step 1 outcomes, not against activity: interviews completed and workshops held are inputs, and a firm reporting only inputs is managing perception. Insist your own people are inside the work rather than observers of it, with analysts paired on the models and managers in the working sessions. That pairing is where knowledge transfer actually happens, and it gives you an independent read on how the engagement is going, which the steering pack will always lag by a month. Watch for the early drift signals while they are still correctable: partner attendance thinning, senior names appearing on the plan but not in the room, working sessions becoming status readouts. Raised in week six, each of these is a conversation. Raised in month four, each is a dispute.
Step 7: Decide the ending before it arrives
Most engagement economics live in the extension, so decide how this one ends while it is still beginning. Put the knowledge-transfer deliverable from the proposal on the plan with a date and an acceptance test: can your team run the model, own the roadmap and explain the analysis to the board without the firm in the room? Schedule the extension decision as a formal gate one month before contract end, decided by someone other than the day-to-day sponsor, against a written question: what specifically remains that internal people cannot now do? Expect a well-run firm to propose follow-on work. That is its model and there is nothing wrong with it, provided the decision is made by the buyer against the Step 1 page rather than arriving pre-agreed inside a steering pack. An engagement that ends with capability inside the organisation was worth the fees. One that ends with a dependency was a lease.
The case for challenge before the engagement letter
The hardest moment to see an engagement clearly is immediately before signature, when the pitch has been strong, the sponsor is invested and the problem feels urgent. That is when a confidential view from people with no revenue at stake changes decisions. Selected senior operators from the Global Board have sat on every side of this transaction: as executives who bought engagements, partners who sold them and board members who questioned the invoices. Put the shortlist, the winning proposal and the Step 1 problem statement in front of them and ask three questions. Is this a problem consulting can solve? Is this the right shape and size of engagement for it? What would they strike from the scope before signing? On a seven-figure engagement, that challenge costs a rounding error and routinely removes a phase the firm needed more than the client did.
