Wave Financial

Wave Financial is a unique player in the market, offering 100% free, unlimited invoicing and accounting software. Its business model is based on earning revenue from its integrated payment processing and payroll services. This makes it an outstanding choice for freelancers, solopreneurs, and very small businesses with simple needs and low invoice volume.

The software includes not just invoicing but also accounting, receipt scanning, and basic reporting. You can create and send unlimited invoices to unlimited clients at no cost. The interface is straightforward, and it handles sales tax calculations.

Historically, Wave disrupted the market by proving a sustainable ad-free, freemium model for financial software. Compared to Zoho Invoice's free plan, Wave has no customer limit but may have slightly less sophisticated project tracking. Compared to paid options, it lacks advanced automation and dedicated support. It's ideal for users who need a professional, no-cost solution to get started and are comfortable paying processing fees on received payments.