A retainer is a fixed monthly fee paid to secure an agreed amount of a professional's time and availability. In fractional leadership, a retainer typically buys a set number of director days each month, giving the business predictable costs and the director a consistent commitment to the client.
What it means
Rather than paying for each day as it is worked, the client agrees a monthly fee that covers a defined level of support, for example two or four days a month plus reasonable contact between those days. The scope, number of days and notice period are written into the agreement.
Retainers recognise that senior leadership is not only about time on site. Directors are often expected to answer questions, review documents and attend key meetings outside scheduled days.
How it works in a UK business
Retainers are the most common structure for fractional director engagements because they suit ongoing responsibility for a function. They are usually reviewed every few months and can be scaled up or down as needs change. Leadership Services offers fractional retainers from £1,795 per month.
Frequently asked questions
What happens if I do not use all the retained days?
This depends on the agreement. Some retainers allow unused time to roll over for a limited period, while others treat the fee as payment for availability regardless of usage. It is worth agreeing this at the outset and reviewing usage regularly so the retainer stays matched to the real workload.
Can a retainer be changed or cancelled?
Most fractional retainers include a notice period, often around one month, and can be adjusted by agreement. Businesses commonly increase days during a funding round, transaction or system change and reduce them once things settle. Flexibility is one of the main benefits compared with a permanent hire.
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Last updated: 5 November 2026