Resource utilization simulator for consulting firms

Every percentage point of utilization you add can mean thousands of dollars in extra monthly revenue.

  • Instant result
  • No sign-up
  • Visible assumptions
  • Deterministic calculation

In 30 seconds: Simulate project demand against your team's capacity to reach optimal utilization without burning your people out. Deterministic calculation with auditable formulas. The result is indicative — adjust the assumptions to reflect your real operation.

A consultancy sells billable hours — that's its capacity. An unbilled hour is permanently lost revenue. This calculator computes the minimum team utilization needed to cover payroll and fixed costs. Applies to agencies, professional firms and similar businesses.

Practical example

Strategy consulting boutique in Mexico City with a 4-person team (2 senior, 2 associates). Aggregated billable capacity: 8 hours/day (each person generates 2 billable hours on average; the rest is BD, proposals, admin), 22 operating days/month, blended average rate $4,500/hour ($6,000 senior + $2,500 associate weighted by mix). Fixed costs $350,000 (base salaries, office, software, accounting), variable cost per hour $0 (salaries are already in fixed).

Per-billed-hour contribution margin: $4,500 (no variable to subtract).

Monthly max capacity: 8 × 22 = 176 hours. Theoretical max revenue: $792,000.

Break-even utilization: $350,000 ÷ $792,000 = 44.2%, equal to 78 billed hours/month. Below that the firm loses money.

At realistic 70% utilization (123 billed hours): revenue $554,400, profit $554,400 − $350,000 = $204,400/month. Net margin 36.9%.

Watch realization: if you bill 70% of capacity but the client only pays 80% of reported hours (discounts, write-offs, disputes), real revenue = $554,400 × 0.80 = $443,520. Real profit = $93,520. Measure your own gap between billed and collected hours before trusting a utilization figure.

Operating recommendation: the primary dial for a boutique is TIME-TO-CASH and REALIZATION, not utilization. Each 5 points of realization gained (from 80% to 85%) is worth $27,720/month in this profile — more than raising rates 10% (which risks 5-10% pipeline loss). Practices that lift realization: bi-weekly billing + weekly WIP review + client sign-off at each milestone (not at project end).

Industry use cases

Strategy boutique

Rate $3,500-8,000/hour for senior consultant. Target utilization 60-70%. Above 75% signals burnout; below 50% signals a pipeline issue.

Digital / marketing agency

Lower rate ($800-2,500/hour) offset by a bigger team. Utilization 70-80% keeps margins at 15-25%.

Accounting / tax firm

Recurring revenue from admin outsourcing plus tax-closing peaks. Irregular utilization — requires flexible capacity.

Law firm

Rate $1,500-6,000/hour. Target utilization 60-70%. Also track realization (% billed vs worked) — a 15-25% gap is normal.

Methodology and assumptions

How results are calculated, what we assume when modeling, and where the method loses precision.

Formula

Break-even occupancy % = Fixed costs ÷ (Monthly capacity × (Price − Variable cost)) × 100

Assumptions

  • ADR (average daily rate) constant within the analysed horizon.
  • Fixed costs cover base staffing, rent, utilities and operating depreciation.
  • Per-night contribution margin (Price − Variable cost) reflects real variable cost per room.

Applicability limits

  • Does not model dynamic pricing (revenue management): use the median actual ADR.
  • Punctual events (conventions, peak season) need manual period adjustment.
  • For full-service hospitality include F&B and other revenue streams separately.

Sources

  • STR / CoStar — Hotel KPI definitions (ADR, RevPAR, occupancy).
  • Internal editorial estimate based on industry best practices.

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You know your occupancy break-even. Now adjust rate and variable cost to lift margin at current volume. Pricing Simulator →

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Calculator guide

What it calculates and who it is for

This calculator answers the question that defines a consulting firm's economics: what share of my team's billable hours must be placed with clients to cover payroll and fixed costs? Enter the team's hour capacity, your rate, the variable cost per hour and monthly fixed costs, and you get the break-even utilization and the expected profit at your actual utilization level.

It is aimed at consulting firms, agencies, design studios, accounting practices and, in general, any business that sells a team's hours: 'capacity' is billable hours per day and 'occupancy' is the team's utilization.

Inputs

Capacity (billable hours per day)
The whole team's sellable hours in a day. Not payroll hours: subtract internal meetings, admin and sales time. A team of 4 consultants with 6 sellable hours each is 24.
Hourly rate
The average price per hour actually billed to clients, after discounts. If you charge per project, divide the project price by the hours it really consumes.
Variable cost per hour
What delivering one more hour costs: unrecovered billable expenses, usage-based software, hourly subcontractors.
Monthly fixed costs
Team payroll, rent, fixed licenses, administration. In consulting, payroll is fixed: it is paid whether the calendar is full or empty — which is why it belongs here, not in variable cost.
Expected utilization (%)
The share of capacity you actually place with clients today. Used to compute your profit at the current level.
Operating days per month
The team's working days in the month, typically 20-22.

Results you get

Break-even utilization
The share of billable hours that must be placed with clients for contribution to cover fixed costs. This is the number that decides whether your rate structure is viable.
Contribution margin per hour
Rate minus variable cost: what each sold hour contributes toward payroll and fixed costs.
Break-even hours per month
The break-even expressed in sold hours per month.
Expected profit
The month's result at your expected utilization: positive above break-even, a loss below it.
Maximum potential revenue
Billing at 100% of hours placed: the theoretical ceiling of your current structure.

Methodology and assumptions

Contribution margin per hour = Rate − Variable cost per hour

Maximum hours per month = Daily capacity × Operating days

Break-even utilization % = Fixed costs ÷ (Maximum hours × Margin per hour) × 100

Break-even hours = Fixed costs ÷ Margin per hour

Expected profit = (Expected utilization × Maximum hours × Margin per hour) − Fixed costs

The engine is a break-even model over limited capacity: it treats each billable hour as a unit of inventory that expires if unsold that day. Break-even utilization is the fraction of that inventory your cost structure forces you to place.

Worked example

Hypothetical example for illustration. The numbers reproduce exactly when entered into the calculator on this page.

Worked example: a 4-consultant firm with 24 billable hours per day, a $900 hourly rate, $180 variable cost per hour, $320,000 in monthly fixed costs, 65% expected utilization and 21 operating days.

Margin per hour: $900 − $180 = $720.

Maximum hours: 24 × 21 = 504 hours per month. Potential revenue: 504 × $900 = $453,600.

Break-even utilization: $320,000 ÷ (504 × $720) × 100 = 88.2%. In hours: $320,000 ÷ $720 = 444.4 hours per month.

Profit at 65% utilization: (0.65 × 504 × $720) − $320,000 = −$84,128 — a monthly loss.

Reading: this structure demands placing 88% of all hours just to avoid losses, a very hard level to sustain. With these numbers the firm must raise its rate, cut fixed costs or increase sellable capacity per consultant; the example shows exactly how the calculator detects an unviable rate structure before the bank account does.

How to interpret the result

A high break-even utilization means a fragile operation: any calendar gap, vacation or delayed project pushes you into losses. If break-even comes out above the utilization you historically manage to sell, the problem is not commercial, it is structural: the rate doesn't support the payroll.

The strongest lever is usually the rate, because it flows entirely into the margin per hour. In the example, raising the rate from $900 to $1,100 lowers break-even from 88% to 69% without touching any cost.

Beware of fixing break-even by adding payroll hours: more consultants raise fixed costs, and break-even may not improve. Always recalculate the full scenario before hiring.

Limitations and when not to use it

  • The model assumes a single average rate. If your rates differ widely by seniority or project type, compute per service line or use your billing's real weighted average.
  • It treats utilization as uniform across the month: it does not model project clustering (full months followed by valleys), which in practice drives cash. Complement it with the cash-flow calculator.
  • It does not model fixed-price projects that overrun: if a project consumes more hours than quoted, your effective hourly rate drops and the real break-even rises.
  • A frequent mistake is entering payroll hours (8 per person) as capacity instead of sellable hours: it inflates the denominator and makes an unreachable break-even look attainable.
  • Do not use it to price an individual project: it is a firm-structure tool, not a quoting tool.

From theory to calculation

The calculator on this page runs with your numbers — no forms, no login. Scroll up and try it.

Try the calculator

Frequently asked questions

1What counts as a billable hour in capacity?
Only hours a client could pay for: direct delivery work. Sales, admin, training and internal meetings are out. Most teams have 5 to 6.5 truly sellable hours per 8-hour day — measure yours before entering data.
2Is consultant payroll a fixed or variable cost?
Fixed, unless you pay strictly per hour worked on client engagements. Payroll accrues the same with an empty calendar, and that is precisely the risk break-even utilization measures.
3What if my break-even utilization comes out above 100%?
It means that even selling every hour you don't cover fixed costs: the structure is unviable at that rate. Raise the price, cut fixed costs or rethink the model — the calculator flags it as unreachable.
4How do I include partners who both sell and deliver?
Split their time: their sellable hours go into capacity, and the share of their compensation tied to delivery goes into fixed costs. The key is not counting sales hours as billable capacity.
5How often should I recalculate?
Whenever payroll, rates or team size change, and as a quarterly review. Break-even moves with every hire, and knowing it before signing is cheaper than discovering it afterward.

Last updated: July 19, 2026

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