Consulting Fees Calculator

Work out a defensible consulting hourly rate using the cost-plus method: cover your desired salary and business overhead, account for realistic billable hours, then add your target profit margin.

Quick Facts

Formula
Rate = ((Salary + Overhead) / Billable Hours) × (1 + Margin)
The standard cost-plus (bottom-up) method for setting a freelance or consulting rate.
Billable reality
Most consultants bill well under 40 hrs/week
Sales, admin, and invoicing time reduce billable hours below total working hours.
Day rate
Hourly rate × 8
A common shorthand for pricing a full day of consulting work.

Your Results

Calculated
Recommended hourly rate
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Cost-plus rate including margin
Recommended day rate
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Hourly rate × 8-hour day
Annual revenue target
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Hourly rate × annual billable hours
Billable utilization
-
Billable hours vs. a 40-hr work week

Ready

Enter your income goal, overhead, billable capacity, and margin, then press Calculate.

How the Consulting Fees Calculator works

Setting a consulting rate from scratch is hard: charge too little and you can't cover your bills once overhead and non-billable time are accounted for; charge too much without a clear rationale and you struggle to justify the number to a client. This calculator uses the cost-plus (bottom-up) method — the standard approach recommended in freelance and consulting rate-setting guides — to build a rate up from your income goal, your costs, and how many hours you can actually bill.

The formula

First, annual billable hours are found by multiplying billable hours per week by weeks worked per year:

Annual Billable Hours = Billable Hours per Week × Weeks Worked per Year

The base rate covers your income goal and costs:

Base Rate = (Desired Annual Salary + Annual Overhead) / Annual Billable Hours

Finally, the base rate is marked up by your target profit margin to get the rate you actually charge:

Hourly Rate = Base Rate × (1 + Profit Margin ÷ 100)

Worked example

Take a desired salary of $90,000, annual overhead of $12,000, 25 billable hours per week, 48 weeks worked per year, and a 20% profit margin. Annual billable hours are 25 × 48 = 1,200. The base rate is ($90,000 + $12,000) / 1,200 = $85.00 per hour. Marked up by 20%, the recommended hourly rate is $85.00 × 1.20 = $102.00 per hour, an $816.00 day rate, and an annual revenue target of $102.00 × 1,200 = $122,400.

Why billable hours are less than total hours

A common mistake is dividing costs by a full 40-hour work week. In practice, independent consultants spend real time on proposals, invoicing, marketing, and admin that cannot be billed to a client — many end up billing only 50-70% of their working hours. Understating billable hours inflates the rate unrealistically; overstating them (assuming you can bill 40 hours every week) understates the rate you actually need to charge to hit your income goal.

Using the profit margin

The overhead figure in this formula typically covers hard costs — software, insurance, a portion of equipment, professional fees — while the profit margin is a separate cushion on top, for irregular income, taxes not otherwise budgeted, reinvestment in the business, and the extra risk of self-employment relative to a salaried role. Many consultants use 15-30% as a starting margin, adjusting based on demand for their specialty and how firm their pricing power is.

Frequently Asked Questions

How is a consulting hourly rate calculated?
This calculator uses the cost-plus (bottom-up) method: add your desired annual salary to your annual business overhead, divide by your annual billable hours (billable hours per week times weeks worked per year), then mark up the result by your desired profit margin. The formula is Hourly Rate = ((Desired Salary + Overhead) / Annual Billable Hours) × (1 + Profit Margin).
Why are billable hours per week usually less than 40?
Most consultants cannot bill a full 40-hour week because time also goes to sales, admin, invoicing, and professional development. Many independent consultants only bill 20-30 hours in a 40-hour week, so the calculator asks for billable hours separately from total working hours.
How is the day rate calculated from the hourly rate?
The day rate is simply the hourly rate multiplied by 8, representing a standard 8-hour billable day. Some consultants discount the day rate slightly for booking a full day versus scattered hours, but this calculator reports the direct multiple as a starting point.
What does the annual revenue target represent?
The annual revenue target is the hourly rate multiplied by your annual billable hours. It is the revenue you would need to bill, at full utilization of your stated billable hours, to cover your desired salary and overhead and hit your target profit margin.

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