Best Free Invoice Software for Small Businesses of February 2023

Invoice Ninja is an open-source platform, so developers from around the world can contribute to testing and improving this software. That also means you can write your own code for a completely customized version, designed for exactly your needs (if you’re tech-literate enough to do so). The software’s basic plan is free and users can upgrade to the Ninja Pro plan for $10 per month or the Enterprise plan for $14 per month. Upgrading to a paid plan gives you the ability to invoice unlimited clients and to access dozens of other features.

Wave offers completely free invoicing and accounting software, with the option to pay additional fees for payment and payroll features. The company’s software is ideal for small service-based businesses and other very small businesses with fewer than 10 employees. In addition to invoicing capabilities, users get access to income and expense tracking, along with reporting and the ability to add an unlimited number of users.

Zoho Invoice is one of the most comprehensive invoice software options, thanks to its multi-currency and multi-language support, client portal features and automation capabilities. In addition to implementing automatic payment reminders and recurring invoices, users can schedule reports so that they’re automatically sent to their email. It also integrates with other Zoho platforms, including Zoho CRM, Zoho Projects and Zoho Analytics. Users have the option to upgrade to Zoho Books accounting software too, which includes invoicing capabilities and offers its own free plan.

If you’re already using PayPal for any of its myriad business services — PayPal's POS systems, payment gateway and business financing are three of the platform’s more popular business services — then PayPal Invoicing, available through the free PayPal Business app, will fit nicely into your current workflow. The platform is primed for existing PayPal users to send basic invoices quickly, automatically and from anywhere.

Square is right up there with PayPal as one of the world’s foremost all-in-one payment platforms for small-business owners. User-friendly design is its modus operandi, so even tech-shy users will likely be able to navigate its invoicing platform. That makes it a great option for existing Square users and small-business owners who want the option to accept payments in person. Along with its popular POS system, Square offers e-commerce, payroll, scheduling, CRM, marketing and business financing tools that all integrate with its invoice program.