Retainer, day rate or project fee and how brewing consultants charge

Why the fee structure matters

Founders often compare consultants on headline price alone. That misses how the work will actually run. A day rate rewards time spent, a project fee rewards finishing a defined job and a retainer rewards being available. Each pushes the relationship in a different direction. The right choice depends on what you need, not on which number looks smallest.

If you are still deciding whether you need a consultant or a permanent hire, our guide to consultant or full-time head brewer covers that choice first.

Day rate

The consultant charges for each day worked, on site or remote, plus agreed expenses such as travel and accommodation. It suits short, open-ended work where the scope is hard to define: a troubleshooting visit, a few days of brew-day training or an urgent problem that needs someone quickly.

The risk is that days can multiply. Agree an estimate of the number of days and a point at which the consultant must check with you before going further. Ask for a short written note after each day explaining what was done and what comes next.

Day rates also suit second opinions, such as a review of a supplier quote or a recipe before launch, where a defined job is too small to scope as a full project.

Project fee

The consultant quotes a fixed fee for a defined piece of work: commissioning a brewhouse, developing a launch tap list, running a loss audit or writing a set of SOPs. It suits work with a clear start, a clear finish and clear deliverables.

The risk sits in the scope. If the scope is vague, both sides will disagree about what was included. Write down the deliverables, the timeline, the number of site visits, what the brewery must provide and what counts as finished. Agree how changes in scope will be priced before they happen.

Retainer

The brewery pays a regular monthly fee for an agreed amount of availability: a set number of days, a number of remote sessions or simply being on call for questions. It suits breweries that want ongoing support from an experienced brewer without a full-time hire, such as a brewpub run by a younger brewer who needs a senior voice to check recipes, review data and help when things go wrong.

The risk is paying for time you do not use. Agree what the retainer includes, whether unused time rolls over and how much notice either side must give to end it. Review it every few months to see whether it still fits.

Hybrid arrangements

Many engagements combine models. A common pattern starts with a fixed-fee health check that produces a written action plan, followed by either a project fee for the main work or a retainer for ongoing support. Our guide to what a brewery health check covers explains that first step.

A health check first has a practical advantage. You learn how the consultant works, how clearly they write and whether your team trusts them, before committing to a longer engagement. The consultant learns enough about your brewery to quote the larger work accurately rather than guessing. Both sides go into the main engagement with fewer surprises.

Whatever mix you agree, make sure each part has its own clear scope. Hybrid deals go wrong when the line between the fixed-fee work and the paid-by-the-day work is never drawn.

What to agree in writing

• Scope and deliverables, in plain words.
• Fees, expenses and how and when they are invoiced.
• Timeline and the number of visits or sessions.
• Who owns recipes, SOPs and documents created during the work.
• Confidentiality, both ways.
• Whether the consultant has any commercial tie to equipment or ingredient suppliers they may recommend.
• How either side can end the engagement.

Take legal advice on the contract wording if the engagement is large. A one-page letter of engagement is enough for small jobs, but it should still exist. In consulting work we often see disputes that start because nothing was written down, not because either side acted in bad faith.

Whatever the model, a good consultant explains it clearly and does not mind being asked questions about it. For more on when to bring one in at all, see our guide on when to hire a consultant brewmaster.