Loading
Centers the disputes hourly billing actually generates: rounding policy, vague time descriptions, and multiple rates on one engagement.
Enter your numbers first, then use the niche guidance below to interpret the output against consultants, developers, lawyers' support services, bookkeepers, and tradespeople billing time and materials..
Hourly billing requires an accurate, transparent record of billable time and agreed hourly rates across different project tasks or team roles. Presenting fractional hours clearly helps clients audit timesheets and prevents billing disputes.
This invoice calculator allows manual entry of fractional quantities multiplied by hourly billing rates. Because the tool does not integrate with time-tracking hardware or automated timesheet software, recorded hours must be rounded and totaled externally before entering them into the invoice.
Each line calculates Total = Quantity (Hours) × Rate. Subtotal is the sum of all hourly lines: Subtotal = Σ(Hours × Rate). A single optional tax percentage applies across the complete subtotal: Total = Subtotal × (1 + Tax Rate). Fractional quantities (such as 0.25 or 0.5 hours) are fully supported, but time rounding and timesheet aggregation must be completed externally prior to entry.
A technical consultant invoices a client for weekly hours across senior advisory and research tasks, billing fractional hours with 0% tax.
Multiplying 30.0 hours at $120.00 ($3,600.00) and 8.5 hours at $90.00 ($765.00) yields a subtotal and total balance due of $4,365.00. Project milestone notes and billing period dates are recorded in the memo field.
Interpretation assumptions: All amounts and tax percentages in this example are illustrative. The tool applies one user-entered tax rate to the entire subtotal. Confirm the actual tax treatment before issuing an invoice; mixed taxable and exempt items need a billing system that supports those rules.
Yes. Enter a positive fractional quantity such as 0.5 or 1.25 and the agreed rate.
No. Calculate the balance or prorated charge separately, then enter the amount due as a line item. Create and send each later invoice manually.
No. One entered percentage applies to the whole subtotal. Use a billing system that supports your actual tax rules when line items differ.
The broader freelance billing page with terms and numbering guidance.
Work out what hourly rate matches a target annual income.
Switch to milestone billing when hourly stops fitting the engagement.
Centers invoices around diagnosis, service location, parts used, labor time, emergency fees, warranties, deposits, and payment follow-up.
Frames invoices around billable time, fixed-fee milestones, retainers, reimbursable expenses, scope boundaries, and client approval workflow.
This manual generator does not determine taxability, send invoices, track payments or schedule recurring billing. Review the document and applicable tax rules before issuing it.