TL;DR: Most agencies charge $5K to $25K per month but don't track true hourly rates by client. The 5-minute calculation: (Monthly Fee / Hours Spent) = Effective Hourly Rate. Anything under $150/hour is likely a money-losing client you should fire. Calculate this for every client this week.
You know your retainer fees. You might even know your margins. But you probably don't know your true hourly rate per client.
This matters because one client paying you $15K/month could be worth $400/hour. Another at $12K/month might be worth $60/hour. Same revenue. Completely different profitability.
The difference is the hours you actually spend. Most agencies don't track this. They guess.
This costs you tens of thousands per year in hidden losses. Here's how to find them and what to do about it.
Why Most Agencies Never Calculate True Hourly Rate
You price your retainers based on what you think the work is worth, not what the work actually costs you. You estimate the hours upfront. Then reality hits.
The client asks for more revisions. Strategy calls run long. Email threads multiply. Scope creeps. And you keep delivering because you're professional.
Your invoice stays the same. Your hours go up. Your effective hourly rate drops.
Most agencies never do the math because it's uncomfortable. You'd have to admit you underpriced. Or that a "good" client is actually unprofitable.
This is why agencies stay stuck at the same revenue for years. They're profitable on paper. Underwater in reality.
How Many Hours Are You Actually Spending Per Client?
Your first step is honest time tracking. Not estimates. Actual hours. For the next two weeks, log every hour per client in a simple spreadsheet. Include strategy calls, execution, email, revisions, and internal meetings about their account.
You're probably spending double what you thought. A client you estimated at 20 hours per month? Usually 35 to 45.
The gap comes from communication overhead. Questions you answer. Decisions you chase. Small tasks that add up.
Track for two weeks, then multiply by 2 to annualize. You'll have a baseline for the calculation that follows.
What Is Your True Hourly Rate Formula?
Take the monthly retainer and divide by the actual monthly hours. That's your effective hourly rate for that client. If a client pays $15,000 per month and requires 30 hours, your rate is $500/hour. If another pays $10,000 for 80 hours, your rate is $125/hour.
The formula is simple: Monthly Fee / Actual Hours = Hourly Rate.
But the math reveals problems your P&L statement hides.
Your client acquisition costs money. If you're delivering at breakeven hourly rates, you're bleeding money on every client, not just losing margin.
Here's a real example.
You have a $20K/month client. You track hours for two weeks: 22 hours. That's 88 hours per month. Your effective rate is $227/hour. Still profitable if your costs are covered. But if you have to pay contractors or team members at $75 to $100/hour, you're only netting $127 to $152/hour. And that covers your overhead, tools, and salary? Tight.
Now look at another client. $16K/month. Same two weeks? 12 hours. That's 48 hours per month. Your rate is $333/hour. After contractor costs and overhead, you're looking at $200+ per hour net profit. Same revenue. Vastly different profitability.
What's the Minimum Hourly Rate You Should Accept?
Most agencies should target $200 to $350 per hour in true effective rate before costs. This varies by your market and service type, but here's the logic: If you're paying contractors or team members $75 to $150/hour, you need to earn at least double that to cover your salary, tools, and overhead. Anything under $150/hour true rate is a red flag.
Anything under $100/hour? Fire it. You're losing money.
High-ticket service providers who track this rigorously operate at $250 to $500/hour effective rates. They're selective about clients and ruthless about scope.
If your average is below $200/hour across all clients, you have a pricing problem or a scope problem. Often both.
Which Clients Should You Fire This Month?
Calculate the true hourly rate for every active client right now. Make a list: Hours, Monthly Fee, Effective Rate. Sort by rate from lowest to highest.
Your bottom 20% are candidates to fire. Not today. But strategically.
Here's how to exit cleanly.
Step 1: Raise the Retainer or Cut the Scope
Contact the client. Be honest. "We've been delivering more hours than we priced. To continue at this level, we need to adjust the retainer to $[new price]." Or "We want to refocus on [specific deliverable] and reduce to 20 hours per month at our current rate."
Half the time, they'll agree to the higher price or accept the reduced scope. You just fixed a problem.
Step 2: If They Won't Budge, Plan the Exit
Give them 60 days notice. Introduce a transition plan. Hand off everything organized. They'll remember you as professional, not as someone who abandoned them.
You just freed up 40 to 80 hours per month. That's capacity for a new $20K to $30K client with better economics.
Step 3: Stop Taking Clients Like This Again
When you pitch new business, build in a 20% buffer on your hour estimates. You'll account for scope creep in the price from day one. Set expectations: "We'll deliver [specific things]. Requests beyond this scope we'll quote separately."
Your best clients accept this because they respect boundaries. Your worst clients will argue. That's your signal.
If your team spends 30 hours per month managing client requests and only 15 building the actual work, you have a systems problem. We solve this by building scalable delivery systems that reduce communication overhead and increase effective rates by 40% to 60%.
The math is simple. The execution requires discipline. Most agencies know they have unprofitable clients. They just don't want to face it. Do the 5-minute calculation anyway. The discomfort is worth the insight.
Your profit is hiding in the numbers you're not tracking.