Freelance Overhead per Hour Calculator (tools, office)

Understanding the freelance overhead per hour — concept and principle

Overhead is everything you pay to run your freelance business that is not tied to a specific client job: software subscriptions, equipment, and office or co-working space. These costs have to be recovered through your rate. This calculator turns them into a single monthly overhead figure and then into a cost per billable hour, so you can see how much of each hour you charge goes just to keeping the lights on. It works with any currency.

How it is calculated

• Equipment per month = equipment cost ÷ (life in years × 12)
• Monthly overhead = software per month + equipment per month + rent per month
• Overhead per billable hour = monthly overhead ÷ billable hours per month

Software subscriptions are recurring monthly tools, equipment cost is the total you spend on computers and gear, equipment life is how many years you expect it to last, rent is office or co-working cost, and billable hours is the paid client time in an average month.

The principle

Recurring costs are already monthly. Equipment is a one-off purchase, so it is converted into a monthly cost by spreading it evenly over its life, the straight-line method. Adding everything gives one monthly overhead number. Dividing by billable hours, not all hours, reflects the fact that only paid hours bring in the money to cover these costs.

Worked example

1. Equipment per month = 3,000 ÷ (3 × 12) = $83.33.
2. Monthly overhead = 120 + 83.33 + 300 = $503.33.
3. Overhead per billable hour = 503.33 ÷ 110 ≈ $4.58.

How to read the result

This figure is part of your cost floor. Your hourly rate must cover overhead per hour plus the pay you want and tax on top. For many solo freelancers overhead is a small slice of the rate, but it rises quickly if billable hours fall: at 55 billable hours a month, the same costs would be about $9.15 an hour. Review the list of subscriptions regularly; unused tools are an easy saving.

Common mistakes

• Forgetting yearly subscriptions; divide them by 12 and add them.
• Leaving out insurance, accounting fees, phone and internet, or website hosting.
• Assuming a long equipment life for laptops and phones.
• Dividing by total working hours instead of billable hours.

FAQ

Frequently asked questions

Should a home office be included?

If you pay extra for space, utilities or internet because of work, a reasonable share can be counted as overhead. Tax rules for claiming it differ by country.

Is overhead the same as business costs?

Overhead is the indirect part of business costs. Project-specific costs, such as stock assets bought for one client, are usually billed to that client.

How often should I recalculate?

Whenever you add a subscription, buy equipment or your billable hours change noticeably.

Sources: Horngren, Datar & Rajan — Cost Accounting: A Managerial Emphasis (Pearson)