Billing by the hour puts the burden of proof on your invoice: a client paying for time wants to see where it went, not just a total. An invoice for hours worked itemizes the tasks, shows the hours and rate for each, and adds up to a number the client can follow line by line. Get that breakdown right and hourly invoices get paid without a query. Here is what to put on an invoice for hours worked, a sample you can copy, and the payment terms that get you paid faster.
What to include on an invoice for hours worked
An invoice for hours worked needs the standard fields plus the detail that justifies the time.
Your details and the client's:: names, business names, and contact info.
A unique invoice number:: for both your records.
Invoice date and due date:: an exact due date, not just "net 30."
Billing period:: the dates the hours cover.
Itemized tasks:: each task or work type on its own line, with a short description.
Hours and rate per line:: the hours for each task and your hourly rate, so the math is visible.
Total hours:: the sum of hours, alongside the amount.
Non-billable note, if useful:: any work you did not bill, which builds trust on longer engagements.
Subtotal, tax, and total:: the amounts and the balance due, with any retainer or deposit credited.
Payment terms and methods:: how and when to pay, plus any late fee.
Breaking the time into tasks with a short description is what keeps an hourly invoice clear, since "consulting, 17 hours" invites questions that "homepage design 12 hrs, revisions 3 hrs, calls 2 hrs" does not.
Sample invoice for hours worked
Here is what realistic hourly line items look like, for a project billed by task and time.
| Description | Hours | Rate | Amount |
|---|---|---|---|
| Homepage design (Jul 1 to 5) | 12 | $75 | $900 |
| Revisions after review (Jul 8) | 3 | $75 | $225 |
| Client calls and project management | 2 | $75 | $150 |
Total hours: 17 · Subtotal: $1,275 · Total due: $1,275
Showing each task with its hours and rate, and the total hours alongside the amount, makes the invoice self-explanatory and keeps an hourly bill from being disputed over how the time was spent.
Build your hourly invoice for free
You do not need to build this from scratch. Our free invoice generator lays out every field above, does the math from hours and rate, and downloads a professional PDF in minutes, with no signup. Enter your tasks, hours, and rate and send.
The free tool is ideal for a one-off invoice. What it does not do is keep your tracked hours and turn them into an invoice, or track which are paid, which matters when you bill time across several clients. FileCurrent logs your billable hours and drops them straight onto an invoice with descriptions attached, so what you tracked is exactly what you bill.
Payment terms and tracking hours for billing
Hourly work gets paid faster when the time is tracked cleanly and billed on a regular cycle.
Track hours against tasks as you work, not from memory at month's end, so every billable minute makes it onto the invoice, which the tracking billable hours for freelancers guide covers. Bill on a set cycle, weekly or every two weeks for ongoing work, so the amount never grows into a surprise and your cash flow stays steady. Keep terms short and add a late fee. Connecting your tracking to your invoicing removes the retyping that causes errors, which the time tracking and invoicing for freelancers guide explains, and the freelance payment terms guide covers structuring the terms.
Frequently asked questions
What should an invoice for hours worked include?
Your details and the client's, a unique invoice number, the invoice and due dates, the billing period, itemized tasks with a short description, the hours and rate for each line, the total hours, the subtotal and total with any deposit credited, and your payment terms. Breaking the time into described tasks is what keeps an hourly invoice from being questioned.
How do I invoice for hours worked?
List each task or work type on its own line with a short description, the hours spent, and your hourly rate, so each line multiplies out and the total is easy to follow. Show the total hours alongside the amount, add the billing period, and state your payment terms. Tracking hours against tasks as you go makes this straightforward at invoice time.
How detailed should an hourly invoice be?
Detailed enough that a client can see where the time went, without turning into a minute-by-minute log. Grouping hours into meaningful tasks, design, revisions, calls, with a short description each, is the right level: it justifies the total and builds trust, while a single "20 hours" line invites questions and a per-minute breakdown is more than anyone needs.
Should I show non-billable time on the invoice?
It is optional, but noting work you did not bill can build trust on longer engagements, since it shows the client you are not padding the hours. List it as a zero-charge line or a brief note. On shorter jobs it is usually unnecessary; on ongoing hourly work, the occasional "no charge" line signals fairness and can make rate conversations easier.
How do I make an invoice for hours worked?
List your details and the client's, add an invoice number, the dates, and the billing period, then itemize each task with its hours and rate, show the total hours and amount, credit any deposit, and add your terms. A free invoice generator does the math from hours and rate, and a dedicated tool turns your tracked time straight into the invoice.
A clear invoice for hours worked shows a client exactly where the time went and gets you paid without a query. FileCurrent turns your tracked hours into professional invoices, sends them, and chases late payments automatically, so every hour you log is an hour you get paid for. $15/month or $129/year. 7-day free trial, no card required.