Billable utilization is the metric that decides everything
Whatever pricing model you run, the single number that decides whether the agency is profitable is billable utilization — the share of your team's working hours that map to revenue-generating client work. Sub-55% and you're hemorrhaging margin to overhead. 65–75% is healthy for a small agency. Above 85% sustained and you're burning your team out and quality will slip.
- Track hours weekly, not monthly — drift hides in the weeks you don't measure.
- Carve out 10–15% of capacity buffer for surprises before quoting retainers.
- Junior roles target higher utilization (75–85%), senior strategists lower (50–65%).
- Sales, admin, internal projects, and PTO are NOT billable — model them honestly.
Retainer pricing: the formula most agencies get wrong
A retainer price isn't 'hours × rate'. It's (fully-loaded team cost ÷ target utilization) × (1 + overhead %) × (1 + profit margin %). Skip any term and you're underwriting the client's project with your own savings.
- Fully-loaded cost: salary + employer payroll tax + benefits + tools + share of opex per head.
- Overhead: rent, software, finance, ops, marketing, training — usually 20–35% of team cost at small scale.
- Target margin: 20–30% net is healthy for service agencies; 30%+ requires productization or seniority leverage.
- Commitment discount: 10–15% off list rate for 6+ month commitments is the most you can responsibly give.
Where agency margin actually leaks
If you ever finished a 'great' month and looked at the bank statement confused, it was almost certainly one of these five.
- Scope creep — out-of-scope 'small asks' compound to 10–20% of delivery cost.
- Bench time on senior people you can't easily reassign.
- Tooling sprawl — three Slack-style tools, two PM systems, four AI subscriptions per seat.
- Subcontractor margin gone — passing through freelancer cost at 1.0x instead of 1.4–1.6x.
- Slow invoicing — net-60 retainers cost you working capital you don't price in.
When to think about agency valuation
Service agencies typically trade at 3–6× EBITDA, with multiples driven by client concentration, retainer mix, niche, and team-not-founder dependence. Productized retainers and recurring MRR push multiples higher; project-heavy shops with founder dependence cap at the low end. Even if you never plan to sell, modeling the number once a year keeps you honest about what's actually being built.
Solo → small agency → mid agency: how the math changes
Different stage, different bottleneck. Match the calculator to your stage.
- Solo: per-hour rate that funds desired take-home — start with the freelance rate calculator.
- Solo + 1–3 contractors: retainer pricing with subcontractor multiplier, utilization 50–60%.
- Small agency (4–15): blended team rate, utilization 65–75%, overhead becomes a real line.
- Mid agency (15–40): margin management, client concentration risk, owner-out planning.
Agency pricing models at a glance
| Pricing model | Best for | Margin profile | Scalability | Client risk | |
|---|---|---|---|---|---|
| Hourly | Specialist consulting, ad-hoc work | Capped at hours × rate | Linear — 2× revenue = 2× team | Predictable for you, scary for them | |
| Project / fixed fee | Productized deliverables | Variable — you eat scope creep | Templatizable | You carry scope risk | |
| Retainer | Ongoing services, content, paid | Strongest at scale | MRR compounds | Shared — both sides win | |
| Performance / outcome | Senior agencies, clean attribution | Highest upside, highest variance | Hard — operational risk per deal | Low for client, high for you |
Things people ask
What's a healthy agency net margin?+
20–30% net margin is healthy for service agencies. Productized retainers with strong utilization push that to 30–40%. Below 15% net and you're either underpricing or under-utilized.
How do I price a retainer if my team isn't fully hired yet?+
Use the agency retainer calculator with the team you intend to have at month 3 of the engagement — including the cost of the contractors you'll lean on early. Don't price for the team you have today if you'll need a bigger one to deliver.
What billable utilization should I target?+
65–75% across the team is healthy for a small agency. Junior delivery roles 75–85%, senior strategists 50–65%, leadership 30–50%. Sales, admin, and internal projects are not billable.
How are agencies valued when they sell?+
Typically 3–6× EBITDA, with productized retainer-heavy shops at the high end and founder-dependent project shops at the low end. Client concentration above ~25% from one client compresses the multiple sharply.
What's on the agency roadmap next?+
Project / fixed-fee quoting, contractor-vs-FTE cost, client concentration risk, and a dedicated agency valuation deep-dive. The retainer, utilization, and margin calculators already cover the core operating math.