Accountants Overhead Cost Calculator Examples
Worked examples showing how accounting practices can estimate overhead costs and hourly overhead recovery at different levels of billable capacity.
These examples show how recurring practice costs and realistic billable hours affect overhead cost per billable hour. The figures are illustrative business-planning estimates, not fee recommendations.
Small office-based accounting practice
A local practice wants to understand the minimum overhead contribution required from each client-chargeable hour.
Input Summary
Office rent
$2,500 per month
Support and admin payroll
$12,000 per month
Software and technology
$1,000 per month
Professional fees and insurance
$750 per month
Other overheads
$750 per month
Billable accountants
4
Billable hours per accountant
100 hours per month
Calculation Breakdown
- 1Total monthly overhead2500 + 12000 + 1000 + 750 + 750$17,000
- 2Monthly billable capacity4 * 100400 hours
- 3Overhead cost per billable hour17000 / 400$42.50 per hour
- 4Annual overhead17000 * 12$204,000
Result Summary
Total monthly overhead
$17,000
Accountants Overhead Cost Calculator
Estimated monthly overhead is $17,000 and the overhead recovery figure is $42.50 per billable hour.
Remote bookkeeping and accounting team
A remote firm wants to test how a lower fixed-cost base changes its hourly overhead requirement.
Input Summary
Office rent
$0 per month
Support and admin payroll
$5,500 per month
Software and technology
$1,800 per month
Professional fees and insurance
$700 per month
Other overheads
$1,000 per month
Billable accountants
3
Billable hours per accountant
90 hours per month
Calculation Breakdown
- 1Total monthly overhead0 + 5500 + 1800 + 700 + 1000$9,000
- 2Monthly billable capacity3 * 90270 hours
- 3Overhead cost per billable hour9000 / 270$33.33 per hour
- 4Annual overhead9000 * 12$108,000
Result Summary
Total monthly overhead
$9,000
Accountants Overhead Cost Calculator
The remote practice has an estimated overhead cost of $33.33 per billable hour.
Growing mid-sized practice with lower utilisation
The firm is hiring and investing in capacity, but current chargeable time is below its longer-term target.
Input Summary
Office rent
$7,000 per month
Support and admin payroll
$28,000 per month
Software and technology
$4,000 per month
Professional fees and insurance
$2,500 per month
Other overheads
$5,500 per month
Billable accountants
10
Billable hours per accountant
75 hours per month
Calculation Breakdown
- 1Total monthly overhead7000 + 28000 + 4000 + 2500 + 5500$47,000
- 2Monthly billable capacity10 * 75750 hours
- 3Overhead cost per billable hour47000 / 750$62.67 per hour
- 4Annual billable capacity750 * 129,000 hours
Result Summary
Total monthly overhead
$47,000
Accountants Overhead Cost Calculator
The growing practice needs to recover about $62.67 of overhead per billable hour at its current utilisation estimate.
Improving utilisation in the same growing practice
The firm wants to see the effect of better utilisation without changing monthly overhead.
Input Summary
Total monthly overhead
$47,000
Billable accountants
10
Billable hours per accountant
100 hours per month
Calculation Breakdown
- 1Monthly billable capacity10 * 1001,000 hours
- 2Overhead cost per billable hour47000 / 1000$47.00 per hour
- 3Hourly reduction62.67 - 47.00$15.67 per hour
- 4Annual overhead47000 * 12$564,000
Result Summary
Annual overhead
$564,000
Accountants Overhead Cost Calculator
Increasing expected billable capacity from 750 to 1,000 hours lowers the overhead recovery figure from about $62.67 to $47.00 per hour.
How to Read Your Results
The monthly overhead result is the combined recurring cost base entered for one month.
Annual overhead is a 12-month run-rate, not a forecast of changing costs.
Monthly billable capacity represents expected client-chargeable hours from the whole billable team.
Overhead cost per billable hour is a cost-recovery component, not a complete charge-out rate.
A higher hourly overhead result can reflect either higher costs, lower billable capacity, or both.
Assumptions & Important Notes
- All costs in each example are recurring monthly amounts.
- Each billable accountant has the same expected monthly billable hours within an example.
- Currency figures are illustrative and use a generic dollar symbol.
- The calculations do not add direct billable employee costs, profit, taxes, or client-specific delivery costs.
Related Examples
Frequently Asked Questions
What is a realistic billable-hours example for an accountant?
It varies by role and practice. The examples use 75, 90, and 100 hours per month to show how different utilisation assumptions affect overhead recovery.
Why does the remote practice still have a meaningful hourly overhead cost?
Rent is only one overhead category. Support payroll, technology, insurance, compliance, marketing, and other recurring costs still need to be recovered.
What happens when billable hours increase but overhead stays the same?
The overhead cost per billable hour decreases because the same monthly cost is spread across more billable capacity.
Can a practice use different billable-hour assumptions for different teams?
Yes. Separate calculations can be useful where service lines, grades, or teams have substantially different utilisation and cost structures.
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Use the live calculator with your own inputs, timing, and preferences.