Consulting Invoice Template
A consulting invoice bills your client for advisory time, a fixed-fee engagement or a monthly retainer, with each service line described in the client's terms, expenses passed through at cost, and the client's purchase order number on top. The template below starts with a consultant's day rate, hourly analysis and travel; edit it and download a PDF or Word file.
From and bill to
Logo (optional)
Stays in your browser. PNG, JPG, SVG or WebP under 1 MB.
Name on the first line, then address, email, phone.
Details
Line items
$2,400.00
$2,537.50
$412.60
$189.00
Discount, tax and payments
Applied to taxable lines after the discount.
Added after tax.
Notes and terms
Balance due
$4,039.10
Subtotal $5,539.10
Total $5,539.10
From
Halvorsen Advisory LLC
77 West Wacker Drive, Suite 1500
Chicago, IL 60601
accounts@halvorsenadvisory.example
Invoice
Invoice # INV-1310
PO / reference #: Client PO 4500-1187, network redesign phase 1
Bill to
Pinecrest Logistics Inc.
Accounts Payable
4100 Freight Way
Indianapolis, IN 46241
| Description | Qty | Unit price | Amount |
|---|---|---|---|
| Strategy workshop with leadership team, on site (day rate) | 1 | $2,400.00 | $2,400.00 |
| Operations analysis and findings memo (hours) | 14.5 | $175.00 | $2,537.50 |
| Airfare Chicago to Indianapolis, round trip, at cost (receipt attached) | 1 | $412.60 | $412.60 |
| Hotel, 1 night, at cost (receipt attached) | 1 | $189.00 | $189.00 |
| Subtotal | $5,539.10 |
| Total | $5,539.10 |
| Amount paid | −$1,500.00 |
| Balance due | $4,039.10 |
Notes
Time log by task attached. The $1,500 retainer received at kickoff is applied above.
Payment instructions
Payment due Net 30 by ACH to Halvorsen Advisory LLC (remittance details on the vendor form). Please reference the PO number with payment.
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Invoices and the books behind them, in one place
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How consultants price and bill
Consultants usually bill by the hour, by the day, by fixed fee or on retainer. Hourly works for open-ended advice and small engagements; list the hours per workstream so the client can see where the time went. A day rate suits workshops, site visits and on-site work, where partial hours make little sense. A fixed fee covers a defined deliverable, such as a market assessment or a process redesign, and is often billed in milestones: at kickoff, at the interim review and at final delivery. A retainer reserves a set number of hours or a level of availability each month, billed in advance, with overage hours billed at month end.
Corporate clients pay through accounts payable, so fit their process. Ask whether they issue a purchase order and put the PO number on every invoice, use their exact legal entity name and billing address, and send the invoice to the AP mailbox as well as to your contact. Net 30 is common with larger companies, and some vendor agreements set Net 45 or Net 60; if you signed those terms, invoice to them.
Line items and time detail
A consulting invoice that clears approval on the first pass usually carries:
Many clients want a time log behind an hourly invoice: date, consultant, hours and a one-line description per entry. Keep it in a spreadsheet and attach it, or summarize hours by task on the invoice itself.
- Professional services by workstream or phase, with hours and rate, or the milestone and its fixed fee.
- Day-rate lines for workshops or on-site days, with the dates.
- The monthly retainer, plus any overage hours at the agreed rate.
- Travel and out-of-pocket expenses at cost with receipts, or a per diem if the contract sets one.
- Subcontracted specialists, if your agreement lets you bill them.
- A retainer or advance already received, entered as Amount paid.
1099-NEC, W-9 and sales tax for consultants
If you work as a sole proprietor or a single-member LLC, a US client that pays you $2,000 or more for services in 2026 generally files Form 1099-NEC (the threshold was $600 for 2025 payments), and it will ask for your Form W-9 before the first payment. Payments made by card are not reported on a 1099-NEC; the card processor reports them on Form 1099-K once they pass $20,000 and 200 transactions. Your invoices are the income record either way, and all of the income is taxable.
Management and strategy consulting is not taxed in most states. Hawaii, New Mexico and South Dakota tax most services, though, and a few states tax specific services that consultants sometimes deliver, such as data processing or information services. Check the rules for the state where your client receives the service. If you bill expenses, show them at cost and keep the receipts, because the client's finance team will ask for them.
Worked Example
The example bills a logistics company for a strategy workshop at a $2,400 day rate and 14.5 hours of operations analysis at $175 an hour ($2,537.50), plus airfare of $412.60 and one hotel night of $189.00 billed at cost. The total is $5,539.10.
| Line | Calculation | Amount |
|---|---|---|
| Strategy workshop with leadership team, on site (day rate) | 1 × $2,400.00 | $2,400.00 |
| Operations analysis and findings memo (hours) | 14.5 × $175.00 | $2,537.50 |
| Airfare Chicago to Indianapolis, round trip, at cost (receipt attached) | 1 × $412.60 | $412.60 |
| Hotel, 1 night, at cost (receipt attached) | 1 × $189.00 | $189.00 |
| Subtotal | Sum of rounded lines | $5,539.10 |
| Total | $5,539.10 | |
| Amount paid | −$1,500.00 | |
| Balance due | $4,039.10 |
The $1,500.00 retainer received at kickoff is applied, so the balance due is $4,039.10, Net 30, with the client's PO number in the reference field so accounts payable can match it.
More Invoice Templates
Each template opens the same generator with line items and terms typical for the trade.
Frequently Asked Questions
Official References
- IRS Instructions for Forms 1099-MISC and 1099-NEC
Who must file Form 1099-NEC and the $2,000 reporting threshold for payments made in 2026.
- IRS: About Form W-9
The form a client uses to collect your legal name and taxpayer identification number before paying you.
- IRS Publication 583, Starting a Business and Keeping Records
Lists invoices among the supporting documents for business income and explains how long to keep records.
This template does the arithmetic and the layout. Sales tax, licensing and invoicing rules vary by state and trade; confirm what applies to your business with your state's department of revenue, your licensing board or a tax professional. Federal figures verified October 2026.