Consulting Invoice Template
Generate a professional invoice for your consulting practice — bill by the hour, day, project, or retainer. Includes a separate expense reimbursement section, engagement letter reference, and automatic calculations for services, expenses, tax, and total due. Ready to send in minutes.
Trusted by consultants and advisory professionals nationwide

- 8
- Steps
- 50
- States Covered
- 2026
- Updated
Summary
- A consulting invoice is your request for payment sent to the client
- Clear invoices outline how much is due and when it’s due
- The right invoice helps build trust and transparency
Running a consulting business can be rewarding. Recovering payment for your services, though, can sometimes be harder than it looks. A complete, professional consulting invoice may make it easier to recover the payment you deserve.
What to Include on the Invoice
Generally, a consulting invoice should at least include the following:
- Your business’s contact information
- The client’s contact information
- The due date
- Line items and the payment breakdown for each
- Subtotals, discounts and taxes
- The total amount due
- Payment instructions
Many consultants also include a brief “thank you” or other note at the bottom of the invoice as well.
Choosing Your Fee Structure
Before you start creating your invoice, you’ll need to select a fee structure. These are a few to consider:
- Hourly billing
- Daily billing
- Project-based billing
Retainer billing is another option. Many people associate this fee structure with attorneys and law firms, but some consultants use it, too.
Avoiding Common Invoicing Mistakes
These are a few mistakes many consulting services run into when creating invoices:
Unclear Descriptions
Make sure your invoice breaks down the services the client received. Vague descriptions like “consulting services” can invite billing disputes.
Poor Formatting
Use a consistent invoice template for each invoice, and always check for errors before sending an invoice to the client. Messy or unprofessional invoices can harm your reputation, and clients may feel less inclined to pay promptly.
Late Delivery
If you wait weeks to send an invoice to a client, it sends the message that payment isn’t urgent.
Best Practices for Sending Invoices
These tips and best practices may help make it easier to recover payment in full and on time:
- Always clearly break down the services a client received so they know where their money is going.
- Offer multiple accepted payment methods to make it easier for clients to pay.
- If you have many clients, consider automated billing and invoicing software.
- Always follow up on missed or late payments.
When you create your consulting service agreement, make sure it clearly states that the client has an obligation to pay promptly.
Getting Paid Upfront and on Time
If you anticipate having trouble recovering payment, you might consider adding early payment discounts. Setting up automated reminders is another easy way to boost payment compliance. Many companies opt to send payment reminders a few days before the due date and on the due date.
Following Up on Late Payments
Sometimes, a client may have simply forgotten to pay an invoice. In this case, it may just take a phone call or email to resolve the issue.
However, if a client is persistently dodging your calls, it may be time to send a demand for payment letter. If that doesn’t work either, you might need to file a lawsuit.
The Importance of Using the Right Invoice
Having a professional consulting invoice doesn’t guarantee that you’ll never run into billing issues. However, it can underscore your business’s professionalism, build trust with clients and increase your chances of recovering prompt payment.
ConsumerShield can help you find the right invoices and other legal documents for your business. Explore our collection of legal document templates and guides today.
Business Law Knowledge Base
No topics match your search.
Support
Frequently Asked Questions
Everything you need to know about our consulting invoice template
A consulting invoice is a billing document sent from a consultant or consulting firm to a client requesting payment for professional advisory services. It includes the consultant's business details and Tax ID, the client's billing information, an itemized list of services performed (with hours and rates or project fees), reimbursable expenses as separate line items, tax calculations, payment terms, and the total amount due. Including your Engagement/SOW reference number helps accounts payable process the invoice faster.
Use the method specified in your engagement letter or contract. Hourly is the most common — enter each service as a line item with the number of hours and your hourly rate. Project-based is a fixed fee for a defined deliverable — enter it as a single line item. Retainer is a recurring fixed fee — use the Recurring Invoice type with a monthly billing cycle. Milestone billing breaks the project into phases, each billed as a separate line item. The flexible line items table supports all approaches.
Add reimbursable expenses as separate line items with clear descriptions (e.g., "Travel — Round-trip Flight to NYC", "Travel — Hotel (2 nights)", "Software License — Project Tool"). This provides transparency and a clear audit trail. Always keep receipts and reference your engagement letter's expense reimbursement policy — most cap certain categories (e.g., meals) or require pre-approval for expenses over a threshold.
In most states, professional consulting services are exempt from sales tax. However, some states tax all services (Hawaii, New Mexico, South Dakota, West Virginia), and IT/technology consulting may be taxable in additional states (Texas, New York, Connecticut, Pennsylvania). The invoice auto-suggests a rate based on your state, but set it to 0% if your specific services are exempt. When in doubt, consult a tax professional.
An engagement letter (or MSA/SOW) defines the scope of work, fees, payment terms, confidentiality, liability limits, and intellectual property ownership before work begins. An invoice is a billing document that requests payment for work already performed under the terms of the engagement letter. The engagement letter is the contract; the invoice is the bill. Always have a signed engagement letter before starting work, and reference it on every invoice.
References
Resources
Explore related articles and sources cited on this page.
ConsumerShield Premium
Unlimited legal forms and guide unlocks.
Prefer monthly? $19.99/mo — choose at checkout.
- Unlimited legal-form generation while active
- Unlimited guide unlocks across every available state
- Completed PDFs stay in your library
- Best for frequent document and guide work
Everything included
- Unlimited legal-form generation while active
- Unlimited guide unlocks across every available state
- Completed PDFs stay in your library
- Best for frequent document and guide work
Subscribe
$199.99/yrSave $39.89 vs monthly ·
Subscribe & save
Consulting Invoice