Law Firm Fixed-Fee Pricing Playbook (2025)
Clients increasingly ask for flat fees — and AI-assisted research is compressing the hours behind legal work. Fixed-fee pricing is a competitive advantage when done right and a margin killer when done blind. This playbook gives you the conversion formula, the scope-control discipline, and the pricing models that keep flat fees profitable.
The Conversion Formula
Every fixed fee starts as an hourly estimate. The formula is simple:
Fixed fee = estimated hours × effective hourly rate × burden factor
The burden factor is the part most firms skip — and the part that separates profitable flat fees from losses. It covers the work you cannot bill for directly: client communication, research, revisions, and the inevitable scope drift. A 1.2x factor is the floor for routine matters; 1.4–1.5x is safer for anything with open-ended scope.
Example: a matter you estimate at 6 hours, at a $350 effective rate, with a 1.3x burden factor, prices at 6 × $350 × 1.3 = $2,730. Round to $2,750 or $2,800 for a clean quote.
The Five Fixed-Fee Models
- Flat fee per matter: one price for a defined matter (incorporation, trademark filing, uncontested divorce). Best for discrete, well-scoped work.
- Flat retainer: a recurring monthly price for a defined scope of ongoing work (general counsel, compliance, monthly contract review). Best for ongoing relationships.
- Tiered flat fee: two or three price points for simple / standard / complex versions of the same matter. Lets clients self-select while you stay protected.
- Flat fee + hourly overage: a base flat fee with a change-order clause converting out-of-scope work to hourly. The most common hybrid.
- Subscription: a monthly fee for unlimited (or capped) access to a defined service category. Best for high-volume, low-variance work.
Retainer Ranges by Practice Area
| Practice Area | Typical Flat Fee | Typical Monthly Retainer |
|---|---|---|
| Estate planning (simple will + POA) | $1,200–$2,500 | — |
| Business incorporation (LLC) | $1,500–$3,500 | — |
| Trademark filing (USPTO) | $1,500–$4,000 | — |
| Uncontested divorce | $2,500–$5,000 | — |
| General counsel / compliance | — | $2,000–$5,000 |
| Contract review (monthly volume) | — | $1,500–$3,500 |
These are planning ranges, not quotes. Your market, experience, and matter specifics move the numbers — which is exactly why the calculator below lets you plug in your own inputs.
Scope Control: The Discipline That Keeps Flat Fees Profitable
The fixed fee is only as safe as the scope definition. Before you quote, write down:
- What is included — the specific deliverables, in plain language
- What is excluded — the work that will trigger a new fee
- Revision limits — how many rounds of changes are covered
- Change-order clause — out-of-scope work converts to hourly at your standard rate
- Assumptions — the facts the price depends on (e.g., "single-member LLC, no employees")
Track your actual hours on the first several fixed-fee matters. If a matter consistently runs over your estimate, your burden factor is too low or your scope definition is too loose — fix the pricing, not the client.
The Mistakes That Turn Flat Fees Into Losses
- Pricing from optimism, not data: estimating hours from what you hope the matter takes instead of what similar matters actually took.
- Skipping the burden factor: quoting 6 hours of work at 6 hours of price, with no allowance for communication, research, and drift.
- Vague scope: "incorporation" without defining what is included — every client then expects unlimited revisions and advice.
- No change-order clause: out-of-scope work becomes free work because there is no mechanism to charge for it.
- Undercutting to win: pricing below your effective rate to close the deal, then resenting the work. A fixed fee should be a premium, not a discount.
Price It in 30 Seconds — Fixed-Fee Calculator
Plug in your hours, effective rate, and burden factor to get a recommended fixed-fee range and monthly retainer equivalent. Illustrative only — not financial or legal advice.
Frequently Asked Questions
How do I convert an hourly rate into a fixed fee?
Estimate the hours a matter realistically takes, multiply by your effective hourly rate, then add a burden factor (typically 1.2–1.5x) to cover scope creep, research, and communication. Round up to a clean number. The formula is: fixed fee = estimated hours × effective rate × burden factor. The calculator on this page does this for you.
What is a fair burden factor for fixed-fee work?
For routine, well-scoped matters (simple contracts, standard filings, uncontested matters) a 1.2–1.3x burden factor is common. For matters with unpredictable scope, client communication overhead, or regulatory risk, use 1.4–1.5x. The burden factor is your insurance against the fixed fee becoming a loss.
Which practice areas work best with fixed fees?
Fixed fees work best where scope is predictable: estate planning, simple incorporations, trademark filings, uncontested divorces, standard contracts, and flat-fee criminal defense. They work poorly where scope is open-ended: complex litigation, multi-party M&A, or matters with unpredictable regulatory involvement.
How do I protect myself from scope creep on a fixed fee?
Define the scope in writing before you quote: what is included, what is excluded, how many revisions, and what triggers a new fee. Use a change-order clause that converts out-of-scope work to hourly. Track your actual hours on the first few fixed-fee matters so your estimates are grounded in real data, not optimism.
What is the difference between a fixed fee and a flat retainer?
A fixed fee is a one-time price for a defined matter. A flat retainer is a recurring monthly price for ongoing services — a defined scope of work delivered each month. Retainers are better for ongoing relationships (compliance, general counsel, monthly contract review); fixed fees are better for discrete matters.
How does the BizLegal AI pricing calculator help?
The calculator on this page takes your hours, effective rate, and burden factor and returns a recommended fixed-fee range plus a monthly retainer equivalent. It is illustrative — a planning tool, not financial or legal advice. Your actual pricing should reflect your market, your experience, and the specific matter.