Accountants Labour Cost (Hourly) Formula
Learn how to calculate an accountant's full cost per productive hour and a cost-based suggested hourly charge-out rate.
This calculation turns annual salary and employment costs into an hourly cost based on productive client-work hours, then adds allocated overhead and a chosen profit markup. It is useful for estimating a sustainable internal cost base before setting or reviewing an hourly rate.
- 100% Free
- No Sign-Up Required
- Private & Secure
- Mobile Friendly
Suggested hourly charge-out rate
Where:
Add employer on-costs to salary, divide the annual employment cost by productive hours, add overhead for each hour, then add the selected profit markup.
Variables Explained
| Variable | What It Means | Unit |
|---|---|---|
| annualSalary - Annual accountant salary | The accountant's gross annual pay before employer-paid costs. | currency |
| employmentOncost - Employer on-costs | Employer taxes, pension contributions, insurance, benefits and similar employment costs as a percentage of salary. | percent |
| productiveHoursPerYear - Productive hours per year | Hours available for client work after non-billable time is excluded. | hours |
| hourlyOverhead - Hourly business overhead | Allocated operating costs for each productive hour. | currency |
| profitMarkup - Target profit markup | Percentage added to the full hourly cost to produce the suggested rate. | percent |
Step-by-Step Calculation
Calculate annual employment cost
This adds employer on-costs to gross salary.
annualEmploymentCost = annualSalary * (1 + employmentOncost / 100)
Calculate labour cost per productive hour
Employment cost is spread over productive hours, not every paid hour.
labourCostPerHour = annualEmploymentCost / productiveHoursPerYear
Add allocated hourly overhead
This produces the full internal cost for one productive hour.
fullHourlyCost = labourCostPerHour + hourlyOverhead
Apply the target profit markup
Markup is added to cost to estimate a charge-out rate.
suggestedHourlyRate = fullHourlyCost * (1 + profitMarkup / 100)
Estimate annual billable value
This is the potential annual value if every stated productive hour is charged at the suggested rate.
annualBillableValue = suggestedHourlyRate * productiveHoursPerYear
Example: accountant hourly cost and charge-out rate
Annual employment cost
£50,000 × (1 + 20 ÷ 100)
£60,000
Labour cost per productive hour
£60,000 ÷ 1,500
£40.00 per hour
Full hourly cost
£40.00 + £15.00
£55.00 per hour
Suggested hourly charge-out rate
£55.00 × (1 + 25 ÷ 100)
£68.75 per hour
Potential annual billable value
£68.75 × 1,500
£103,125
Final Result
The estimated full cost is £55.00 per productive hour. A 25% markup gives a suggested charge-out rate of £68.75 per hour.
Assumptions
- ✓Annual salary is gross pay before employer-paid costs.
- ✓Employer on-costs can reasonably be estimated as a fixed percentage of salary.
- ✓Productive hours exclude leave, training, administration, internal meetings and other non-client work.
- ✓Hourly overhead is allocated consistently across productive hours.
- ✓The selected markup is applied to cost, not calculated as a profit margin on the final rate.
Limitations
- !Actual employment costs can change with contracts, benefits, payroll arrangements and local rules.
- !Productive hours may vary materially by role, seniority, workflow and utilisation.
- !Overhead allocation may be different between departments, offices and service lines.
- !The result does not include sales taxes, discounts, write-offs, bad debts or unbilled work.
- !A cost-based rate may differ from a commercially appropriate final client price.
Common Mistakes to Avoid
Dividing salary by all paid hours instead of realistic productive hours.
Omitting employer pension, insurance, payroll taxes or benefits from on-costs.
Treating profit markup and profit margin as the same measure.
Using an annual overhead total as though it were an hourly overhead amount.
Assuming every productive hour will be sold and collected at the suggested rate.
Related Formulas
Frequently Asked Questions
What is the formula for an accountant's hourly labour cost?
Annual employment cost is divided by productive hours per year. Annual employment cost equals annual salary multiplied by one plus employer on-costs divided by 100.
How is a charge-out rate calculated from staff cost?
Add hourly overhead to labour cost per productive hour, then multiply the full hourly cost by one plus the target markup divided by 100.
Why use productive hours instead of contracted hours?
Contracted hours include paid time that may not be available for client work, such as leave, training, meetings and administration.
Is a 25% markup equal to a 25% profit margin?
No. A 25% markup means cost is multiplied by 1.25. The resulting profit margin is 20% of the selling price before other adjustments.
What is included in full hourly cost?
Full hourly cost combines employment cost per productive hour with the hourly business overhead entered.
Ready to calculate your result?
Use the calculator to get instant results with your own inputs.