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Accountants Invoice Total (Hourly) Calculator

Calculate an accountant's invoice total from hourly fees, billable time, expenses and an optional tax rate.

Your Details

Overview

Use this Accountants Invoice Total (Hourly) Calculator to estimate a client invoice from an hourly rate, total billable hours, reimbursable expenses and an applicable tax rate.

How it works

The calculator multiplies the hourly rate by billable hours to find the work charge. It adds reimbursable expenses to produce the pre-tax subtotal, then applies the tax percentage to that subtotal. Adding tax to the subtotal gives the estimated total due.

How to use this calculator

  1. 1Enter the agreed hourly rate.
  2. 2Add the total billable hours worked.
  3. 3Include any reimbursable expenses.
  4. 4Enter the applicable sales tax, VAT or GST rate.
  5. 5Review the estimated subtotal, tax and final invoice total.

Example Calculation

Hourly rate

$150

Billable hours

8

Reimbursable expenses

$50

Tax rate

20%

Total invoice amount

$1,500.00

At $150 per hour for 8 hours, plus $50 in expenses and 20% tax, the estimated invoice total is $1,500.00.

Frequently asked questions

How do I calculate an hourly accountant invoice?

Multiply the hourly rate by billable hours, add approved expenses, then apply any relevant tax to the pre-tax subtotal.

Should expenses be included in the invoice total?

Include expenses if they are reimbursable under the engagement terms. Enter only the amount you intend to charge to the client.

Is tax charged on reimbursable expenses?

It can be, depending on the tax rules and how the expense is treated. This calculator applies the entered tax rate to both work charges and expenses.

Can I use decimal billable hours?

Yes. For example, enter 1.5 for one hour and 30 minutes, or 0.25 for 15 minutes.

Does this calculator include invoice discounts or retainer credits?

No. The estimate includes hourly work, expenses and tax only. Apply discounts, prior payments or retainer credits separately if they apply.

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Assumptions and warnings

Assumptions

  • Billable hours are charged at one hourly rate.
  • Expenses are added to the invoice at the amount entered.
  • Tax is calculated on the full subtotal, including expenses.
  • The result is an estimate and does not account for discounts, retainers, write-offs or payment terms.

Warnings

  • This calculator provides an estimate only and is not tax, accounting or legal advice.
  • Confirm applicable tax treatment, invoice requirements and reimbursable expenses for the relevant jurisdiction and engagement.