Understanding Legal Fee Structures: Hourly, Fixed, and Contingency
Solicitors charge in three main ways. Knowing which model applies to your matter is the first step to estimating — and controlling — your legal costs.
Legal fees can feel opaque, but almost every solicitor in the UK uses one of three billing models. Understanding which one applies to your matter is the single biggest factor in predicting your final bill — and in choosing the right calculator on this site.
1. Hourly billing
Under hourly billing you pay for the exact time a legal professional spends on your case, usually recorded in six-minute units. Rates vary widely: a junior paralegal may charge £100–£150 per hour, while a senior partner in a London firm can exceed £500 per hour. Hourly billing suits complex or unpredictable matters — commercial litigation, multi-party disputes, or novel legal questions — where the scope of work cannot be known in advance.
The risk is that costs escalate if the matter drags on. To manage this, ask for a cost estimate of hours upfront, request monthly billing statements, and consider negotiating a "capped fee" so your exposure has a ceiling. You can model these scenarios with our hourly legal fee calculator.
2. Fixed fees
A fixed fee is a pre-agreed price for a defined piece of work, regardless of how long it takes. It provides cost certainty and is common for routine, predictable matters: conveyancing, will drafting, undefended divorce, and company formation. The solicitor carries the risk of underestimating the time required, which is why fixed fees are only offered for well-scoped work.
The trade-off is that if your matter becomes more complex than expected, the solicitor may renegotiate or charge additional fees for work outside the original scope. Always confirm exactly what is — and is not — included in a fixed fee quote. Our solicitor fee calculator helps you build a baseline for a fixed-fee quote.
3. Contingency and conditional fees
In a contingency arrangement (often called a "no win, no fee" or Conditional Fee Agreement in the UK), the solicitor is paid a percentage of the amount recovered if you win, and nothing if you lose. This is common in personal injury and certain types of litigation. Success fees are typically capped at 25% of damages in personal injury matters.
Contingency arrangements shift risk to the solicitor but reduce your net recovery. They are not suitable for every matter and are rarely available for non-monetary claims.
Which model is right for you?
If your matter is routine and well-defined, a fixed fee gives you certainty. If it is complex or unpredictable, hourly billing is more honest — but demands active cost management. If you are pursuing a monetary claim and cannot afford to pay upfront, a contingency arrangement may be appropriate. Use the calculators on this site to build a baseline budget for each model before you speak to a firm. For a fuller picture of what shapes the final bill, see our guide to the factors that affect solicitor costs, and learn how to budget for legal services without surprises.