Free Hourly Invoice Calculator
Calculate exact invoice totals for billable hourly work, consultant hours, freelance services, and contractor time. Factor in labor rates, reimbursable expenses, early discounts, and deposits with instant deterministic math.
Hourly Invoice Calculator
Labor, Expenses, Taxes & Balance DueInvoice Summary
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Transfer your hours, rate, expenses, and balance due directly into Invoza's invoice generator.
The Hourly Billing Formula
Total Labor = Hours Worked × Hourly Rate. Always track time consistently to the nearest quarter hour (0.25) or tenth hour (0.1) to avoid rounding disputes.
Expenses vs. Labor
Reimbursable project expenses should never be blended into billable hours. Keeping them distinct ensures transparent accounting and prevents unintended tax liabilities.
Applying Client Retainers
If the client provided an upfront deposit or monthly retainer, subtract that payment after calculating the gross invoice total so the balance due reflects only remaining funds.
Related Billing Calculators & Guides
Frequently Asked Questions
How do you calculate an hourly invoice?
To calculate an hourly invoice: multiply the total billable hours worked by your hourly rate to find the labor subtotal (hours × rate). Add any approved reimbursable client expenses, subtract agreed discounts, calculate sales tax on the taxable balance if applicable, and subtract any upfront retainer or deposit already paid to determine the final balance due.
Should hourly invoices include itemized time increments?
Yes. Most corporate clients and accounting departments require itemized time entries—often tracked in 15-minute (0.25) or 6-minute (0.10) increments—with clear date stamps and concise descriptions of the deliverables completed during those billable hours.
How do you handle client expenses on an hourly invoice?
Reimbursable expenses (such as software licenses, stock photography, materials, or site travel) should be listed as separate line items distinct from professional labor hours, with backup receipt vouchers attached to prevent approval delays.
Can I generate a clean PDF invoice directly from this calculation?
Yes. Clicking 'Create Invoice From This Total' transfers your figures directly into Invoza's free invoice generator where you can select from six professional design templates and download an unwatermarked vector PDF immediately with no signup.