Best Free Invoice Tools for Small Businesses

Best overall free option — includes accounting too

Wave is the most full-featured free invoicing tool available. It includes unlimited invoices, unlimited clients, automatic payment reminders, recurring invoices, and built-in accounting (income tracking, expense tracking, profit and loss reports). You can accept credit card and bank payments directly through Wave — processing fees apply (2.9% + $0.60 per transaction), but the software itself is free. If you want one tool that handles both invoicing and basic bookkeeping without paying a monthly fee, Wave is the answer.

Best for: Solo operators, freelancers, service businesses

Best free option for client management and automation

Zoho Invoice is 100% free and includes customizable templates, automated payment reminders, a client portal, time tracking, expense management, and multi-currency billing. It integrates with Stripe, PayPal, and Square for payments. The client portal is a standout feature — customers can log in to view and pay all their invoices in one place. If you deal with repeat clients and want a professional, polished experience, Zoho Invoice is hard to beat at no cost.

Best for: Businesses with repeat clients, project-based work

Best for getting paid fast with zero setup

If you already have a PayPal business account, you can send invoices in under two minutes — add a client name, itemize the work, hit send. Customers can pay by card or PayPal without creating an account. The downside is PayPal's transaction fees are higher (2.99% + $0.49 per transaction) and customization is limited. But for contractors who want the absolute fastest way to send a payment link after a job, this works.

Best for: Quick one-off invoices, clients already familiar with PayPal

Best for businesses that also take in-person payments

Square Invoices is part of Square's payment ecosystem, which means if you already use a Square card reader on job sites, your invoicing and payment history are all in one place. The free plan includes unlimited invoices, automatic reminders, and milestone-based payments for larger projects. The paid plan ($20/month) adds custom fields and more automation. Strong choice if you ever take payments face-to-face.

Best for: Contractors who accept in-person and remote payments