A client calls on a Tuesday afternoon. They’ve decided to pause the project, budget changes, internal restructuring, a shift in priorities. It happens. They’re apologetic. They’re not trying to stiff you.
But you started this project six weeks ago. You turned down two other proposals during the kickoff phase. You’ve spent 40 hours on research, strategy, and initial deliverables. The remaining 60 hours you’d planned for the second half of the project is time you’re now scrambling to fill.
Without a kill fee clause, you get paid for the 40 hours delivered, and absorb the loss on the planning, the opportunity cost, and the gap in your schedule. With a kill fee clause, you get paid for the 40 hours delivered plus a percentage of the remaining contract value as compensation for the disruption. The math is the whole conversation.
The Clause That Creates the Conversation
The kill fee clause should appear in every project contract before the payment terms section. Here is the full language:
“If Client terminates this agreement before final delivery for any reason other than Consultant’s material breach, Client shall pay a cancellation fee calculated as follows:
(a) If termination occurs before 50% of the project scope is complete, as reasonably determined by Consultant based on hours delivered or milestones completed: cancellation fee equals 25% of the remaining unpaid contract value.
(b) If termination occurs after 50% of the project scope is complete: cancellation fee equals 50% of the remaining unpaid contract value.
In addition to the applicable cancellation fee, Client shall pay all fees for work delivered and accepted prior to the termination date. Cancellation fees are due within 14 days of the termination notice.”
On a $20,000 project with $12,000 remaining at the point of cancellation, this produces:
- Early cancellation (under 50% complete): $3,000 kill fee + delivered work
- Late cancellation (over 50% complete): $6,000 kill fee + delivered work
The amounts are meaningful without being punitive. They compensate you for opportunity cost and planning disruption. Most clients who sign a contract with this language accept it as professional standard.
The Trigger: “Termination for Any Reason Other Than Material Breach”
The key phrase: “for any reason other than Consultant’s material breach.” This protects the client’s legitimate escape hatch, if you fail to deliver, miss major milestones, or commit fraud, they can exit without paying a kill fee. Anything else, budget cuts, leadership changes, strategic pivots, triggers the clause.
Don’t include “project not meeting client expectations” as an exception. This language is frequently abused, a client who is dissatisfied (for legitimate or illegitimate reasons) can claim the project didn’t meet expectations to avoid the kill fee. Your contract should specify what constitutes material breach: failure to deliver agreed work products, failure to meet defined milestones by agreed dates, or fraud. Vague “expectations” language doesn’t qualify.
The kill fee clause doesn’t prevent clients from cancelling, nothing does. It ensures that the financial consequence of cancellation falls on the party making the decision, not the party who planned their business around the engagement.
The 50% Completion Threshold
The percentage split at 50% completion is the industry standard for a reason: early in a project, you’ve invested less time, your pipeline displacement is smaller, and the client has received less value. At 60–70% completion, you’ve delivered substantial work, turned away most competing opportunities, and incurred the majority of your project costs.
Define “completion” in your contract, don’t leave it to interpretation. The most defensible definition: “percentage of total project hours delivered, as tracked in [time tracking tool].” Alternatively: “as measured by the completion of defined project milestones.” Either works if stated explicitly.
If the client disputes the completion percentage at cancellation, share your time log. The documentation ends the debate.
The 48-Hour Rule for Invoicing
The moment you receive a formal cancellation notice, by email, in writing, send the kill fee invoice within 48 hours. Here’s why this matters:
Waiting allows the cancellation to age and the client’s sense of obligation to fade. Three weeks after cancellation, the client is focused on whatever new direction they’re pursuing and the kill fee feels like a bill from a past relationship they’ve already moved on from. Invoice immediately and the payment obligation is fresh.
The invoice message: “Thank you for the heads-up on [project]. Per Section [X] of our contract, a cancellation fee applies. Based on project completion at approximately [X]%, the fee is $[amount], due within 14 days per our agreement. I’ve attached the invoice. Please let me know if you have questions.”
No hedging. No apology. No request for sympathy. You have a contract. The clause applies. The invoice is due.
When to Waive the Kill Fee
Occasionally, waiving a kill fee is the right strategic call, not because the clause doesn’t apply, but because the client relationship has more future value than the kill fee amount.
The test: is this client likely to send you referrals, provide a public testimonial, or return with a larger project within 12 months? If yes and the kill fee is under $5,000, consider waiving it explicitly and framing it as a goodwill gesture.
The language: “I want to keep the door open for future work, so I’m going to waive the kill fee this time. I do need to invoice for the work delivered to date, I’ll send that over today. Looking forward to working together again when the timing is right.”
What this is not: a general policy. Waiving a kill fee because you feel awkward invoking the clause is a boundary problem, not a relationship decision. Apply the clause consistently. Make deliberate exceptions when the strategic case is clear.
Putting It in the Proposal
The kill fee clause should appear in the contract, but it should also be surfaced during the proposal conversation, not as a threat, as a transparency measure.
“My standard contract includes a cancellation clause, if the project needs to stop partway through, there’s a fee based on completion percentage. That’s pretty standard for project work. Any questions about how it works before we move forward?”
Clients who read this as reasonable are the right clients. Clients who react with alarm or try to remove it before the project starts are clients who’ve thought about cancelling before they’ve agreed to hire you.
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