Free tool · no signup
Free consulting invoice generator
Invoice your consulting engagement with the usual lines already on the page ("Consulting (hours)", "Strategy workshop (half day)", "Report and recommendations" and "Travel expenses") and consulting terms in the notes: Net 30. Hours billed in 15-minute increments per the engagement letter. Expenses billed at cost. Amounts are left blank on purpose: type your own quantities and rates, delete any line you do not need and add the ones you do. Download a PDF instantly, no signup.
Last updated August 2026 · Maintained by the Invoice My Clients team.
Is this consulting invoice generator really free?
Yes. You can build a consulting invoice and download a professional PDF without paying or signing up, as many times as you like. The free download carries a small footer mark; a free account removes it and keeps every invoice in one place.
| Capability | Free, no account | Free account |
|---|---|---|
| Build invoice with live preview | ||
| Unlimited line items & per-item tax | ||
| 12 currencies, locale formatting | ||
| Download PDF | Yes (small footer mark) | Yes (clean, unbranded) |
| Save & revisit documents | ||
| Email the invoice to your client | ||
| Get paid online | ||
| Recurring invoices & retainers |
How to invoice as a consultant in under a minute
Fill in the form, watch the live preview, and download or save. Here is the full walkthrough.
- 01Add your firm’s name, address, email and tax ID, then the client’s legal entity, billing address and the purchase order or engagement reference their finance team asked you to quote.
- 02Bill time on the "Consulting (hours)" line with the total hours for the period and your rate. In the description, name the period covered and the workstream, and attach a timesheet with dates and 15-minute entries.
- 03Bill fixed-fee work on its own lines: a "Strategy workshop (half day)" with the date, a "Report and recommendations" line when the report is delivered. Delete lines you did not deliver this period.
- 04Add travel and other expenses at cost with the receipt total on the line, or delete the line if the engagement letter says expenses are included in the fee.
- 05Set the invoice number and dates with the due date at Net 30, apply tax if your services are taxable where the client is (check your local rules), upload your logo and click Download free PDF.
The notes start with "Net 30. Hours billed in 15-minute increments per the engagement letter. Expenses billed at cost." Edit that sentence if your terms differ. A retainer engagement is invoiced in advance at the start of each month for the agreed block of hours, with any hours over the block billed in arrears on the next invoice.
What should a consulting invoice include?
Corporate clients pay consulting invoices through a procurement system that rejects anything it cannot match to an engagement letter or purchase order. Include the following and it goes straight through.
- Your firm’s name, address, email and tax or company registration number
- The client’s legal entity name and billing address, with their purchase order or engagement reference
- A unique invoice number, the invoice date and a due date consistent with your terms (Net 30 in the notes)
- The period covered, for example "1 to 31 May", so the client can accrue it in the right month
- Time as hours at your rate, by workstream or phase, with a timesheet attached that shows dates and 15-minute entries
- Fixed-fee deliverables (workshops, reports, assessments) on their own lines with the delivery date
- Expenses at cost on separate lines with receipts attached, or a note that expenses are included
- Any retainer already invoiced or hours drawn from a prepaid block, shown so the balance is clear
- Tax if your services are taxable where the client is, and the reverse-charge note if you bill across borders
- Payment terms, late fee, and bank or payment-link details, including the currency and any international transfer references
Taxes, VAT, GST, and multiple currencies
You can mark each line item taxable or not and set the rate, so a single invoice can mix taxed and untaxed items. This per-item control is something many simple tools cannot do, where one document is limited to one tax rate.
Documents render in 12 currencies with locale-correct formatting: USD, EUR, GBP, CAD, AUD, JPY, INR, PKR, MXN, NZD, ZAR, and SGD. That covers VAT in the EU and UK, GST in India, Australia and Canada, and US sales tax. Need detailed tax handling across your whole workflow? See the tax feature.
Do more with a free account
Invoice My Clients tracks your time against each client, bills retainers automatically at the start of every month, attaches the timesheet, and takes payment by card or bank transfer in the client’s currency.
Create account & saveFeatures
Unlimited line items
Add as many items as you need with per-item taxable control.
Your logo, your brand
Upload a logo and it appears on the document and the PDF.
Live totals
Subtotal, discount, and tax recalculate instantly.
12 currencies
Locale-correct formatting for every supported currency.
No signup to download
Build and download a PDF without creating an account.
Consulting lines pre-listed
"Consulting (hours)", "Strategy workshop (half day)", "Report and recommendations" and "Travel expenses" are already on the invoice with blank amounts, and the notes carry Net 30 terms, 15-minute billing increments and expenses at cost.
Frequently asked questions
What should a consulting invoice include?
Your details, the client’s legal entity and purchase order reference, invoice number and dates, the period covered, hours by workstream at your rate with a timesheet attached, fixed-fee deliverables on their own lines, expenses at cost with receipts, anything already invoiced on retainer, tax where it applies, and payment terms. Corporate accounts-payable teams reject invoices missing a PO number more often than for any other reason, so ask for one before the first invoice.
Should I bill hourly, per project or on retainer?
Hourly suits diagnostic and open-ended work; bill it in 15-minute increments (the pre-filled notes say "Net 30. Hours billed in 15-minute increments per the engagement letter. Expenses billed at cost.") and never round a 10-minute call to an hour. Fixed fees suit defined deliverables such as a workshop or report, and let you invoice on delivery rather than by the clock. Retainers suit ongoing advisory work: invoice the agreed block of hours in advance each month, bill overage in arrears, and state in the engagement letter whether unused hours roll over. Many consultants mix all three on one invoice, which is why the tool pre-lists hours, a workshop and a report.
What payment terms are normal for consultants?
Net 30 is standard for corporate clients and is what the notes carry; Net 15 or payment on delivery is reasonable for small businesses and individuals. Larger companies sometimes impose Net 45 or Net 60 in their supplier terms; if you accept it, price it in. A late fee of 1% to 1.5% per month is common and should be stated in the engagement letter, not just on the invoice. Check your local rules: several countries have statutory late-payment interest and fixed recovery charges for business-to-business invoices that you can claim on top.
When should a consultant send the invoice, and what is the most common mistake?
Invoice on the last working day of each month for time-based work, on delivery for fixed-fee deliverables, and on the first of the month in advance for retainers. Do not let two months of hours pile onto one invoice; the client’s budget holder will question a large number they did not see coming. The most common consulting invoicing mistake is a line that says "Consulting services, 42 hours" with no dates, no workstream and no timesheet: it invites a query, and every query costs you a fortnight.
Is my client data safe?
Yes. Everything you type stays in your browser. Nothing is uploaded or stored on our servers unless you create an account and save the document yourself. See our privacy policy for details.
What currencies are supported?
USD, EUR, GBP, CAD, AUD, JPY, INR, PKR, MXN, NZD, ZAR, and SGD, each formatted correctly for its locale.
Do I need to install anything?
No. Everything runs in your browser. There is nothing to download or install.
What happens when I create an account?
Your invoice is carried straight into your new Invoice My Clients account. Your invoice arrives ready, PDF generated, so you can send it and get paid online. From there you can edit it, send it, track payment, and get paid online.
Does it remember my business details?
Yes. Your own business details, logo, currency, and payment information are saved on your device (in your browser, never on our servers) so you do not re-enter them next time, and your invoice number auto-increments from the last one you used. Client details, line items, and amounts are never saved. You can clear everything any time with the "Clear saved details" link above the form.
Is there a Spanish version?
Yes. The same invoice generator is available in Spanish, with the document, the labels and the PDF in Spanish, at the "Español" link in the header.
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