Consulting fees rarely fit neatly into hours. You might bill a monthly retainer, a fixed fee per project phase, a day rate for workshops, and travel costs on top. A good consulting invoice keeps those separate so the client's finance team can approve each one without calling you.
The consulting invoice templates below come with sample phases, a retainer line and payment details for bank transfers, and they load into the editor on this page. Click a card, replace the sample client and fees with your own, and download a clean PDF.
A phase-based project invoice and a single-line monthly retainer. Click either one to load it into the editor below; your saved draft is only replaced once you start editing.
Tip: copy rows from Excel or Google Sheets and paste them into any line.
Rename any label printed on the invoice. You can also click a label on the preview.
Consulting clients are often larger companies with accounts payable processes. Give them what that process needs.
A monthly retainer, a milestone fee, an extra workshop day and travel passed through at cost.
| Description | Qty | Rate | Amount |
|---|---|---|---|
| Advisory retainer: November | 1 | $3,000.00 | $3,000.00 |
| Milestone 2: market analysis report | 1 | $4,500.00 | $4,500.00 |
| Additional workshop day | 1 | $1,800.00 | $1,800.00 |
| Travel expenses, at cost | 1 | $412.60 | $412.60 |
| Total due | $9,712.60 | ||
Whether consulting fees and reimbursed expenses are taxable depends on where you and your client are. Set the tax line to match your situation.
A consulting invoice is usually checked against two documents: the engagement letter or statement of work that sets the fee, and a purchase order that approves the spend. If the invoice uses the same names, periods and amounts as those documents, it moves through accounts payable without anyone needing to ask you a question. If it doesn't, it waits in a queue. For a consultant, a paid invoice is as much an administrative achievement as a commercial one. Accounts payable teams process hundreds of invoices, and they pay the ones that match.
So mirror the paperwork. Name each line the way the statement of work names the phase or deliverable, put the PO number in the PO field, address the invoice to the legal entity the client specified, and send it to the invoice address they gave you rather than only to your day-to-day contact. Large companies may also ask you to register as a supplier before your first invoice can be paid, so start that early. Ask at the start how long approval usually takes, and set your payment terms and follow-ups with that in mind. Once you know the route an invoice takes, every future invoice can follow it without a hitch.
How you price the work changes how the invoice should read. Day rates work like hourly billing: put the number of days in the quantity column and the day rate beside it, and define a day, such as eight hours on site; a half day is 0.5. Fixed-fee or value-priced work should be invoiced as the outcome or milestone with a quantity of 1 and no hours at all. Adding hours to a fixed fee invites the client to divide one by the other. Day rates are easy to compare and easy to check; fixed fees reward you for working efficiently. Whichever model you use, make sure the invoice and the engagement letter describe the fee the same way.
Expenses need a policy as much as a line. Agree up front which costs are reimbursable (travel, accommodation, per diems, software), whether you bill them at cost or with a handling margin, and whether receipts must be attached. Then list expenses as separate lines after your fees, grouped by trip or month, so the client can code them to a different budget from your fee. If the client caps expenses, for example a maximum hotel rate, show that each expense is within the cap in the line details. Reimbursed expenses may be taxed differently from your fee, so keep them easy to separate.
Retainers are usually invoiced at the start of the month they cover, so the work is paid for before it happens. Project milestones are invoiced when each deliverable is accepted.
Net 30 is typical for corporate clients, and some insist on longer terms. Agree on terms in the engagement letter, then repeat them on every invoice along with the due date.
Ask early who should receive invoices and whether a purchase order is required. An invoice sent to the wrong inbox, or without a PO, is the most common reason a consulting payment is late.
Retainers, milestones and expenses.
Send one invoice per period with a single line for the retainer, such as “Advisory retainer: November”, at the agreed amount. The Retainer Monthly template is set up this way.
List them as separate lines, labeled at cost, after your fees. Keep the receipts and attach them if your agreement asks for them.
Whatever your agreement says. The template handles all three: put days, hours or 1 in the quantity column and the matching rate beside it.
Yes. Fill in the PO number field in the Details step and it appears in the invoice header, where accounts payable teams look for it.
Usually not. For fixed-fee or milestone work, invoice the deliverable with a quantity of 1. Keep time records for yourself and share them only if your agreement asks for them.
Yes. Fill it in and download a PDF for free, with no watermark and no signup.
Different work, different invoice. Each of these opens in the same free generator.
