Legal Fee Structures Explained
Each fee structure allocates risk between the firm and the client differently. Understanding which risk you are taking on is more useful than comparing headline rates.
Last reviewed
Hourly rates
The client pays for time spent, so the client carries the risk that the matter takes longer than expected. It is the most flexible structure and the least predictable, which is precisely why clients dislike it and why it survives on unpredictable work.
An hourly rate on its own says very little. What matters is the rate multiplied by the hours, and the hours depend on who does the work - a task done by a senior lawyer at a high rate can cost less than the same task done slowly by a junior.
Fixed and capped fees
A fixed fee moves the overrun risk to the firm. The client gets certainty; the firm gets the upside if the matter runs smoothly and absorbs the cost if it does not.
A capped fee is a hybrid - hourly billing up to a ceiling. It gives the client a worst case while leaving the firm paid for actual time below it, and it is common where the scope is broadly known but not precisely.
- Hourly - client carries the duration risk.
- Fixed - firm carries the duration risk.
- Capped - firm carries the overrun risk above the cap only.
- Staged - fixed fees per phase, repriced as the matter develops.
- Contingency - firm carries the outcome risk and is paid from the result.
Retainers, and the two things the word means
A retainer can mean money held on account against future fees, drawn down as work is done and topped up when it runs low. That is an advance payment, not a fee.
It can also mean a periodic payment securing availability or a defined level of ongoing service. Those are quite different arrangements, and confusion between them is a routine source of disputes about what has been paid for.
Contingency and conditional arrangements
Under a contingency or conditional arrangement the firm is paid a share of the recovery, or an uplifted fee, and is paid little or nothing if the matter fails. The firm takes the outcome risk in exchange for a larger share of a successful result.
Availability is regulated and varies enormously. Some jurisdictions permit them broadly, some restrict them to particular claim types, and some prohibit them outright in certain areas such as family and criminal work.
Disbursements are separate from fees
Court fees, expert reports, searches, filing costs, transcripts and travel are usually charged in addition to the professional fee, under any structure. A fixed fee is rarely fixed for these.
They can be substantial on litigated matters - sometimes exceeding the professional fee - so a quoted figure that does not state its treatment of disbursements is not a complete quote.
What to establish before instructing
The structure, the scope it covers, what happens when the scope changes, who performs the work and at what rates, how disbursements are handled, and how and when invoices are issued.
Most fee disputes are scope disputes wearing a different hat. A written engagement letter setting out what is and is not included prevents more of them than any discussion about the rate.
Frequently asked questions
Which fee structure is cheapest?
None of them reliably. Each allocates risk differently, and which is cheaper depends on how the matter actually unfolds - which nobody knows at the start.
Is a retainer a fee?
It depends which sense is meant. Money held on account is an advance against future fees. A periodic availability payment is a fee. Establishing which applies is worth doing in writing.
Are contingency fees available everywhere?
No. They are regulated and vary substantially by jurisdiction and by claim type, and are prohibited outright in some areas of practice.
Is this legal advice?
No. This is a general explanation of common fee structures. It does not advise on any particular arrangement and is not a substitute for advice from a qualified lawyer.
Tools that do this maths for you
Everything explained above is available as a working calculator.
- Billing & Fees
Legal Fee Tool
Build a fee estimate by timekeeper level with expenses and a stated allowance, and see the blended rate it produces.
Open calculator → - Time & Utilization
Billable Time Tool
Convert a daily billing habit into annual hours and the cash it produces after realization and collection.
Open calculator →