Accountants Day Rate (Hourly) Formula
Learn how to calculate an accountant's target day rate and hourly rate from income goals, overheads, profit buffer and billable time.
This calculation estimates the revenue an independent accountant needs to generate, then spreads it across realistic billable days and hours. It helps turn an annual income target into a planning baseline for day and hourly pricing.
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Recommended hourly rate
Where:
Add the desired income and annual business costs, increase the amount for the profit buffer, then divide it by the billable hours available during the year.
Variables Explained
| Variable | What It Means | Unit |
|---|---|---|
| desiredAnnualIncome - Desired annual pre-tax income | The annual income target for the accountant before personal taxes. | currency |
| annualOverheads - Annual business overheads | Expected annual practice costs, such as software, insurance, memberships and marketing. | currency |
| targetProfitMargin - Target profit buffer | The percentage of revenue retained for reinvestment, unexpected costs or growth. | percent |
| workingDaysPerYear - Available working days per year | Potential workdays before deducting non-billable time. | days |
| nonBillableDays - Non-billable days per year | Days used for leave, administration, training, marketing, sickness or unfilled capacity. | days |
| billableHoursPerDay - Billable hours per day | Average client-chargeable hours on each billable day. | hours |
Step-by-Step Calculation
Calculate billable days
Remove time that cannot normally be invoiced to clients from available working days.
billableDays = workingDaysPerYear - nonBillableDays
Calculate revenue before the buffer
Combine the personal income target with business costs that client revenue must cover.
revenueBeforeProfitBuffer = desiredAnnualIncome + annualOverheads
Add the profit buffer
Gross up the required revenue so the selected percentage remains available as a buffer.
annualRevenueTarget = revenueBeforeProfitBuffer / (1 - targetProfitMargin / 100)
Calculate the day rate
Divide annual revenue needed by estimated chargeable days.
recommendedDayRate = annualRevenueTarget / billableDays
Calculate the hourly rate
Convert the day-rate target into an hourly equivalent using genuinely billable hours.
recommendedHourlyRate = recommendedDayRate / billableHoursPerDay
Example: independent accountant rate target
Billable days
260 - 70
190 days
Revenue before buffer
£80,000 + £20,000
£100,000
Annual revenue target
£100,000 / (1 - 10 / 100)
£111,111.11
Recommended day rate
£111,111.11 / 190
£584.80 per day
Recommended hourly rate
£584.80 / 8
£73.10 per hour
Final Result
The estimated minimum planning rate is about £585 per day or £73.10 per hour.
Assumptions
- ✓The income target is treated as pre-personal-tax income.
- ✓Annual overheads are separate from the desired income target.
- ✓The profit buffer is calculated as a percentage of total revenue.
- ✓Every billable day produces the same average number of billable hours.
- ✓Billable days and hours are achievable throughout the year.
Limitations
- !The result does not benchmark local market prices, experience or specialist expertise.
- !It does not allow for client-specific discounts, fixed-fee overruns, bad debts or late payment.
- !Personal taxes, indirect taxes and business structure costs are not calculated.
- !Actual billable capacity can vary substantially between busy and quiet periods.
Common Mistakes to Avoid
Using all calendar workdays as billable days and overlooking leave, administration and sales activity.
Counting total hours worked rather than the hours that can actually be invoiced.
Leaving out recurring costs such as software subscriptions, insurance and professional memberships.
Treating the profit buffer as an addition to costs rather than grossing up revenue.
Assuming one standard hourly rate suits every service, client and level of responsibility.
Related Formulas
Frequently Asked Questions
What is the accountant hourly rate formula?
Divide the annual revenue target by annual billable hours. Annual revenue target includes desired income, overheads and the selected profit buffer.
How do I calculate an accountant day rate?
Calculate the annual revenue target and divide it by the number of expected billable days in the year.
Why is the profit buffer divided by one minus the percentage?
This makes the buffer the chosen share of total revenue. For a 10% buffer, £100,000 of costs and income requires £100,000 divided by 0.90.
How are billable hours per year calculated?
Multiply billable days by average billable hours per day.
Can I use this formula for fixed-fee accounting work?
Yes, as a baseline for estimating the value of time required, but a fixed fee should also reflect scope, risk and likely delivery effort.
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