How to Know When to Fire a Bad Customer

Calculate customer profitability and spot warning signs to identify when firing a difficult client improves your bottom line.

1. Calculate true customer profitability. Track all costs: direct labor hours, management time, expedited shipping, rework, and opportunity costs from delayed projects. Subtract these from gross revenue to get net profit per customer. Include the time you spend thinking about problem customers after hours.
2. Apply the 80/20 rule test. Rank customers by profit contribution and time consumption. If a customer generates less than 5% of revenue but consumes more than 15% of your team's bandwidth, they're a firing candidate. Document exactly how many hours per week this customer requires versus your profitable accounts.
3. Set payment and behavior thresholds. Fire customers who pay later than 45 days consistently, require more than 3 scope changes per project, or generate complaints from your team weekly. Late payment costs you 1-2% monthly in cash flow value. Scope creep kills project margins.
4. Calculate replacement capacity. Ensure you can fill 60-80% of lost revenue within 90 days before firing. Multiply freed-up hours by your target hourly rate to estimate opportunity value. Don't fire customers during seasonal low periods unless they're costing you money every month.
5. Execute the termination professionally. Give 30-60 days notice depending on contract terms. Finish existing work completely and refer them to competitors if possible. Document everything for potential legal issues. Bad customers often become difficult during breakups.