3 Best Invoicing Tools for Freelancers

Invoice Zintro PostFreelance consultants and contractors don’t earn a regular weekly paycheck. Instead, they receive payment for each project they complete, usually for several clients at a time. Keeping up can be a challenge, particularly when payments are delayed. Therefore, it is important to have a reliable (and cost effective) billing system to keep the process organized. Check out the following list of invoice tools designed to do the job well for free.

Simple Invoices

Simple Invoices is- in a word- simple! It is a free and open-source web-based system that quickly creates professional invoices. Setup is fast- just install the software and you are ready to enter billing info. There are several invoices to choose from and you can control invoice wording. Use PayPal for your business? There is PayPal payment gateway support. Also track inventory, estimates, quotes and more. With Simple Invoices, you can save your invoices as several file types (PDF, Word, Excel, or text). A hosted version is available for $4/month.

PayPal Payments

One of the biggest benefits of PayPal payment is that your clients don’t need a PayPal account to pay. Create invoices with one click and a few details and they can pay with a credit card from the instructions they receive via email. The search feature help you locate past invoices by customer and date. Save your template so you can insert addresses directly from your contact list.


Wave is an invoicing tool with tons of extra features. Send unlimited professional invoices at no cost. It tracks payments, partial payments and overdue notices and works with any sales tax. Set it up so that you receive a message when your invoice is viewed. Clients can pay with a credit card.. With the new Invoice by Wave mobile app you can design and track apps from anywhere, which is helpful for consultants on the go.


Another quick solution is to access the templates from companies such as Billable by AppFactory and Invoiceto.me. Double-click on a field to enter your own text. The template handles pricing and taxes. Then download to PDF or print off to send via snail mail.

As a consultant you have enough to keep track of without having to worry about billing. Try one of these free apps and it will be one less task to manage. Of course the Zintro platform currently supports an automated invoicing workflow for micro-consults, making billing a breeze. Sign up as a Zintro Expert today!

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