Every event planner uses one of four fee models, and most choose theirs by copying whoever they learned from. It is worth thinking about properly once, because the same event pays very differently depending on which you pick.

Flat fee

One number for a defined scope. Clearest for the client and the only model that rewards you for getting faster, which over a few seasons is a substantial raise you give yourself.

It requires you to be able to estimate hours, and it punishes vague scopes badly. Pair it with a change-of-scope clause or it will be the model that hurts you.

Percentage of budget

A share of what the client spends. Scales sensibly with the size of the event and matches industry convention, so it needs no explaining.

The flaw is structural: your fee rises when your client spends more, which makes recommending the cheaper supplier awkward. Disclose the model plainly and it is manageable. Hide it and it undermines every recommendation you make.

Hourly

Safe on a vague brief and useful for consulting work. It also caps your income at the hours in a week, makes clients hesitate before calling you, and rewards you for being slow, which is the wrong incentive for both sides.

Most planners use it for scoping work and then move to a flat fee once the job is defined.

Per guest

Common in catering-led and corporate work, where the number of guests genuinely drives most of the cost. It is easy for a client to sanity-check and it moves with a guest list that changes, which it will.

It fits some events and misleads badly on others. A hundred-guest event in a blank warehouse is far more work than a hundred-guest dinner at a hotel, and per guest cannot see the difference.

The check that applies to all four

Whichever model you choose, divide the resulting fee by the hours the event will actually take you. If that number is below what you need to earn, the model is not the problem, the fee is.