You Got a Consultant. Now What?

How to Pick the Right Engagement Model (and Create Accountability)

You've decided to bring in a consultant. You've found the right person for the job, but have you found the right model to engage them with?

Pick the wrong structure and you'll overpay for vague deliverables, or underpay for a relationship that never moves the needle.

A consultant without accountability is just an expensive opinion. Let's fix that.

The Three Models

Option 1: Fixed Fee Scoped Project

A specific problem. An agreed definition of success. A fixed price.

Examples: Software implementation, process audits, team training, certification prep.

• The Good: No billing surprises. Clear accountability. Either the deliverable exists or it doesn't. Easy to evaluate ROI.
• The Bad: Requires you to clearly define what you need upfront. Scope is rigid. One "quick addition" becomes a renegotiation conversation.
• Best when: The problem is well-defined and the inputs and outputs are knowable before you start.
• Accountability tip: Before signing, write down what "done" looks like in plain language, with actual business KPIs. What will work differently on Day 30 than Day 1?

Option 2: Hourly

Billable hours directed toward a defined goal, but you don't yet know the exact path to get there.

Examples: Improving on-time delivery, increasing margin, reducing customer escalations.

• The Good: Flexible enough to evolve as you learn, but still anchored to a real problem. Easy to expand incrementally.
• The Bad: Without milestones and frequent check-ins, it can drift into a retainer model without retainer-level structure.
• Best when: You're facing a cross-functional challenge where the root cause isn't obvious yet.
• Accountability tip: Every 15-20 hours, stop and ask: what changed? What decision did we make? "We had good conversations" is not an answer.

Option 3: Retainer

A recurring fee for ongoing access to expertise. No fixed scope, no hour tracker. Just a trusted advisor available when you need them.

Examples: Advisory board seat, fractional executive, leadership coaching.

• The Good: Maximum flexibility. Builds real organizational knowledge over time. Creates a relationship, not a transaction.
• The Bad: Easiest model to abuse in both directions. Bad consultants coast, bad clients treat it like on-demand staffing. Without structure or open dialogue, one party is likely to feel slighted.
• Best when: You're navigating sustained ambiguity such as market repositioning, leadership development, long-term strategy, or you need expert judgment available in real time.
• Accountability tip: Set quarterly objectives. Three things you want to make progress on. Review them together. If the retainer isn't moving the needle, then it’s time to reevaluate.

So Which Model Is Right For You?

The right answer can be a sequence: start with a block of hours while you're getting to know each other, move to fixed fee for specific findings and deliverables as the relationship matures, then transition to a retainer for ongoing expert advisory once the project work is done. Each model earns the next.