A consultant invoice should list the engagement period, the day rate or fixed project fee, the deliverables produced (reports, workshops, recommendations), any reimbursable expenses with attached receipts, and clear payment terms. Inbill's Corporate template uses the conservative layout that finance departments at consulting clients are used to processing.
By Asad Mahmood, founder of Inbill. Reviewed for accuracy against the app on the date below.
Last updated
Free, in your browser
Make a consultant invoice now.
The lines below are filled in for a typical consultant job. Add your own rates, your client and your payment details, then download the PDF. You do not need an account, and nothing you type leaves this device unless you save it to a free account.
From
Bill to
Invoice №
Due date
Currency
Tax %
Template
Line items
Description
Qty
Rate
Amount
Amount$0.00
Amount$0.00
Amount$0.00
Discount (flat)
Notes (optional)
Payment details (optional)
Printed in its own block so your client knows exactly where to pay.
Runs in your browser; the draft stays on this device. It is only uploaded if you choose to save it to a free account. Never watermarked.
Recommended template
Why the Corporate template fits
A formal, conservative layout that signals professional services: the visual register clients expect when they're paying for advice rather than making.
Consultants get paid for outcomes the client could theoretically have figured out themselves, which means the invoice has to make the value visible without overselling it. A consultant's invoice is read by a different audience than a designer's or developer's: it goes to a finance team or a procurement officer who's matching it against a PO, not a project manager who already knows what was delivered. Common errors are vague engagement descriptions ("strategic advisory, May" tells AP nothing), missing PO numbers (which gets the invoice queued for the next cycle while someone hunts down approval), and bundled travel that wasn't pre-approved. Inbill's Corporate template gives the document the conservative, by-the-book aesthetic that consulting clients' finance teams expect, and the platform's separate notes field lets you reference the contract or PO number cleanly. Pair that with itemised reimbursables and a Net 30 default, and your invoice becomes the predictable last step of a delivery, not a follow-up project of its own.
What goes on the invoice
Typical line items for consultants.
The prices on this page are illustrative 2026 US dollar ranges, not survey data or a quote guide. Rates differ a lot by city, country and experience. Use what you and your client agreed.
Line item
Unit
Illustrative US range
Day rate (senior consultant, on-site)
per day
$1.5k–$5k
Day rate (mid-level consultant, remote)
per day
$800–$2.5k
Strategy workshop (half-day, facilitated)
per workshop
$1.5k–$8k
Written report / deliverable
per report
$2.5k–$25k
Hourly advisory call / coaching
per hour
$150–$800
Monthly retainer (advisory, capped hours)
per month
$2.5k–$15k
Travel & accommodation (pre-approved)
reimbursable
Your price
Diagnostic / discovery engagement
flat
$3.5k–$30k
On rates
How much should consultants charge?
Consulting rates in 2026 are signal as much as substance: a $400/hour rate communicates a different positioning than $150/hour for the same work. Independent management consultants in major US/UK markets bill $250–$700/hour or $2,000–$5,000/day; specialist boutique consultants (M&A, regulatory, AI strategy) bill higher. The trap most independents fall into is hourly billing for engagements that should be fixed-fee: clients prefer a known number and consultants almost always undercount the hours. Switch to per-deliverable or per-engagement pricing as soon as you can estimate scope. For retainer relationships, cap the included hours and bill overage separately; this prevents the relationship from drifting into unpaid "quick questions" that quietly consume your week.
The figures in this section are illustrative, like the table above.
How to send the invoice
Sending your first invoice as a consultant.
01
Pick the Corporate template
Open Inbill, choose Corporate. The conservative layout matches what finance and procurement teams at consulting clients expect to see.
02
Reference the PO number in the invoice notes
In Inbill's Notes field, add "PO #XXXXXX, Engagement YYYY-MM, MSA dated YYYY-MM-DD." A missing reference is a common reason a consulting invoice waits until the next pay cycle.
03
Itemise reimbursables separately, with receipts attached
Travel, accommodation, and expenses go on their own lines, never bundled into the day rate. Attach receipts as a PDF appendix where required by the client's expense policy.
04
Default to Net 30, longer for enterprise
Set the due date 30 days from issue. Some Fortune 500 clients run on Net 60 or Net 90: match their procurement cycle rather than fighting it, but raise your rate to absorb the cash-flow cost.
05
Send the hosted link to your day-to-day client and the AP inbox
Forward Inbill's public invoice link to both your delivery contact and the AP team's shared inbox. The day-to-day contact confirms the work; AP processes the payment without needing to ask "is this approved?"
Frequently asked
Consultant invoice questions, answered.
Should a consultant bill day rate or fixed-fee for engagements?
Fixed-fee for any engagement with a defined deliverable (a report, a strategy, a workshop output). Day rate for open-ended advisory or interim work where the client wants you on-call. The mistake most independent consultants make is using day rate for everything: it signals "rented hours" rather than "purchased outcome" and caps your earnings at calendar capacity. Move toward fixed-fee per-deliverable as fast as you can estimate scope reliably.
How should consultants handle reimbursable expenses on invoices?
Always pre-approve them in writing before incurring, always list them separately, and always attach receipts. Lump-sum "expenses" lines without backup get rejected by procurement. Put each expense on its own line in Inbill and send the receipts with the invoice email or as a separate "Reimbursables" PDF; pair this with a clause in your engagement letter that caps unapproved expenses at zero: you eat anything you didn't get the OK on.
What's a fair payment terms for consulting work?
Net 30 is common for independent consulting work; Net 45–60 is common for enterprise clients with formal procurement. Add a late-fee clause (1–1.5% per month) and a clear escalation path. Most consultants don't enforce late fees, but having them on the invoice changes the conversation when an invoice ages past 60 days. For first-time clients or large engagements, ask for a 30–50% deposit upfront.
Should I include a non-disclosure note on the invoice itself?
Usually no. Confidentiality belongs in the engagement letter, not the invoice. The invoice is processed by AP, not by the people bound by the NDA, so the clause does nothing useful there. The exception is when invoice line-item descriptions themselves are sensitive (e.g. naming an unannounced acquisition target). In that case, use generic descriptions like "Strategic advisory, April 2026" and put the detail in a separate cover letter.
How do consultants invoice for retainer relationships?
Issue the invoice on the same calendar day each month (e.g. the 1st), for the agreed retainer fee, with a single line item naming the retainer period: "Advisory retainer, May 2026." If you cap included hours, add a second line for any overage at your hourly rate. Inbill's recurring-invoice feature automates the monthly issue so you never forget, and clients prefer the predictability of a fixed cadence.
Free for 10 invoices a month, every month. Pro is $5 a month for unlimited invoices. With an account you get a link your client opens on WhatsApp, saved clients and automatic payment reminders.