How to Write a Consulting Invoice—Here’s Everything You Need to Know

Posted August 15, 2022 by in Career

As a consultant, you likely spend a lot of time working on projects for your clients. And at the end of each project, you’ll need to send them an invoice for your services. This can seem like a daunting task, but it doesn’t have to be! In this article, we will walk you through everything you need to know about writing a consulting invoice. We’ll cover topics such as what information to include on the invoice, how to format it correctly, and when to send it. Let’s get started!

What is a consulting invoice?

A consulting invoice is a document that you send to your client at the end of a project, detailing the work you’ve done and the amount they owe you for your services. This document should be clear and concise so that there’s no confusion about what your client is being billed for. I

It’s also important to make sure that your invoice is correctly formatted so that it’s easy to read and understand. Namely, there are invoices for IT consultants that are different from those for financial consultants. The format will be somewhat different, but the content will be very similar. As a result, you might wish to include a brief explanation of your efforts as well as the dates that they were completed.

What information should be included on a consulting invoice?

There are a few key pieces of information that should always be included on a consulting invoice. First, you’ll need to include your contact information, so that the client knows who they are dealing with. The invoice should also include the client’s contact information so that they know to who to make the payment. Next, you’ll need to list the project details, including a description of the work you’ve done and the dates that it was completed. Finally, you’ll need to include the total amount due, as well as any applicable taxes or fees.

List the services 

When you’re writing a consulting invoice, there are a few things that you’ll need to include in order to make sure that everything is accounted for. First, you’ll need to list the services that were performed. Be as specific as possible here so that your client knows exactly what they are being charged for. 

Next, you’ll need to include the dates of service. This is important so that your client can see when the work was performed and match it up with their own records. Finally, you’ll need to include the total amount due for your services. Make sure to list this clearly and in a place where it will be easy for your client to find. If you have any discounts or special rates, be sure to list those as well.

Pay attention to how you format the invoice

Once you have all of the necessary information gathered, it’s time to format your invoice correctly. Start by including your name and contact information at the top of the page. This will make it easy for your client to get in touch with you if they have any questions about the invoice. 

Next, add your client’s information. This should include their name, address, and contact information. If you have a reference number for the project, be sure to include that as well. 

Now it’s time to add in the services that were performed and the corresponding dates and charges. Be sure to list this information in an easy-to-read format so that your client can understand it at a glance.

Websites such as Zintego provides an easy and great way to invoice clients.

Include your payment terms

Finally, you’ll need to include your payment terms. This should include the total amount due, as well as when you expect to be paid. If you have any special discounts or rates, be sure to list those here as well. 

You should also include your method of payment so that your client knows how they can pay you. This can be done via check, PayPal, or wire transfer. 

Send the invoice and follow up with your client

Once you’ve finished writing and formatting your invoice, it’s time to send it to your client. The best way to do this is via email so that you have a record of when it was sent and received. You can also send a physical copy of the invoice, but be sure to get confirmation that it was received. Also, make sure that you keep a copy of the invoice for your own records. 

After you’ve sent the invoice, be sure to follow up with your client to make sure that they received it and that they understand the charges. This is especially important if you haven’t worked with the client before. An email or phone call should suffice. 


Writing a consulting invoice doesn’t have to be difficult. Just be sure to include all of the necessary information and format it in an easy-to-read way. With a little bit of care, you can create an invoice that will help you get paid quickly and without any hassle.

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