9 Best Free Invoicing Software for Small Business (2026)
The phrase “free invoicing software” is one of the most abused terms on the internet. Most of the top search results lead to “free trials” that quietly become $30/month bills, plans that limit you to three invoices per month, or apps where the actual invoice you send carries a watermark advertising the product. None of that is free.
This guide cuts through the marketing. Every tool below is genuinely free at the tier described — not a trial, not a teaser, not paywalled at the moment of sending. Some are free forever for individuals; others are free if you process payments through their parent platform. Where there is a real catch (a transaction fee, a feature limit), we say so plainly.
For most freelancers and small business owners, the right invoicing software is whichever one matches the way you already get paid. If you accept PayPal, PayPal Invoicing is free. If you use Stripe, Stripe Invoicing is free. If you have no payment processor preference yet, Wave or Zoho Invoice are the best truly-free options on the market.
What “Free” Actually Means in Invoicing Software
Before the picks, here is the breakdown of what “free” means in the invoicing space, because understanding the four common business models tells you a lot about which tool is right for you.
Free for individuals, paid for teams. The cleanest model. The tool is fully functional for solo users with no time limit; team features, multi-user access, and accountant integrations cost money. Wave and Zoho Invoice fit this model.
Free if you pay processing fees. The tool charges nothing for the invoicing software itself but takes a percentage when a customer pays. Square Invoices, Stripe Invoicing, and PayPal Invoicing fit this model — typically 2.9% + $0.30 per transaction. For low-volume invoicing this is cheaper than a $20/month subscription.
Free open source, you self-host. The software is genuinely free but you host it yourself or use a paid cloud version. Invoice Ninja is the standout example.
Free no-account web tools. Browser-based generators that produce a PDF invoice on demand without saving any data. Useful for one-off invoices or for users who do not need ongoing client management. TheToolBus Invoice Generator fits here.
Knowing which model fits your situation is the most useful filter when choosing.
1. Wave Accounting — Best Free Invoicing for Most Small Businesses
Wave is the market leader in genuinely-free small business invoicing and accounting software. The free tier covers unlimited invoices, unlimited customers, recurring billing, payment reminders, multi-currency support, and basic accounting. Wave makes its money on payment processing (2.9% + $0.30 for cards) and optional payroll add-ons; the invoicing and accounting software itself is free indefinitely for any number of clients.
The interface is polished, the mobile app is solid, and the invoice templates look professional out of the box. Customer payment options include credit card, ACH bank transfer (US), and PayPal.
What you get free: Unlimited invoices, unlimited customers, recurring billing, automated reminders, professional templates, mobile app, basic accounting and reporting.
Where Wave makes its money: 2.9% + $0.30 per credit card payment, 1% per ACH (US) — only when you accept payments through Wave.
Best for: Solo freelancers, side hustles, and small businesses that want one tool for invoicing and accounting without a subscription.
2. Zoho Invoice — Best Free Invoicing if You Don’t Need Accounting
Zoho Invoice is a fully free standalone invoicing product from the Zoho suite. It is genuinely free forever — no trial, no upsell — for businesses with revenue under a published threshold. Unlike Wave, it does not include accounting, which keeps the interface focused and the learning curve short.
You get unlimited invoices, unlimited clients, automated payment reminders, recurring invoicing, time tracking, expense logging, online payment integrations (Stripe, PayPal, Razorpay), and a customer portal where clients can view and pay invoices. The mobile app is excellent.
What you get free: Unlimited invoices and clients, time tracking, expense tracking, online payments, customer portal, automated reminders, mobile app.
The catch: Zoho’s free plan is for businesses below an annual revenue threshold (currently $50,000 in most regions). Above that, you upgrade — but for the freelancers and solopreneurs who fit, it is the most generous free invoicing tool on the market.
Best for: Freelancers and consultants who want a focused invoicing tool without bolted-on accounting they will not use.
3. Invoice Ninja — Best Free Invoicing for Self-Hosted Setups
Invoice Ninja is open-source. The cloud version has a generous free tier (unlimited invoices, up to 20 clients) and the self-hosted version is fully free with no client limit. For technically-inclined users who want their invoicing software running on their own server with no monthly fee, this is the gold standard.
The feature set is enterprise-grade: project tracking, expense management, vendor management, recurring billing, online payments via 40+ gateways, branded client portals, multi-currency, multi-language. The UI is dense but powerful.
What you get free: Cloud free tier with up to 20 clients OR self-hosted version with unlimited everything.
Best for: Developers, technical agencies, and businesses with privacy or sovereignty requirements that rule out cloud SaaS.
4. PayPal Invoicing — Best if You Already Use PayPal
If you already accept PayPal payments, PayPal Invoicing is the lowest-friction option you can choose. Send a professional invoice, the customer clicks a link in their email, and they pay with PayPal balance, credit card, or bank transfer. There is no separate invoicing subscription.
PayPal makes its money on the standard transaction fee (typically 3.49% + $0.49 for online payments in the US). The invoice templates are clean if not exciting, and the customer experience is familiar to most buyers.
What you get free: Unlimited invoices, automated reminders, partial payments, multi-currency, integration with the PayPal account you probably already have.
The cost: 3.49% + $0.49 per transaction (US online rates).
Best for: Anyone whose customers already pay via PayPal — particularly common for international freelancers and digital service businesses.
5. Square Invoices — Best for Service Businesses
Square Invoices is a free invoicing layer on top of Square’s payment processing. The basic plan is free with no monthly fee; you pay only the 3.3% + $0.30 transaction fee when a customer pays online. The Plus plan ($29/month) adds advanced features like milestone billing and project-based invoicing.
For service businesses already using Square for in-person payments — salons, contractors, consultants — adding invoicing is a no-brainer because everything sits in one dashboard.
What you get free: Unlimited invoices, automated reminders, custom branding, recurring invoicing, mobile app.
The cost: 3.3% + $0.30 per online card payment.
Best for: Service businesses already using Square for in-person payments.
6. Stripe Invoicing — Best for Subscription and Tech Businesses
Stripe is best known for developer-friendly payment processing, but its invoicing layer is fully free. There is no subscription cost, no per-invoice fee, just the standard 2.9% + $0.30 Stripe transaction fee when an invoice is paid. For SaaS, agencies, and tech businesses already using Stripe for subscription billing, sending one-off invoices through the same dashboard is friction-free.
The customer payment experience is the cleanest of any tool on this list — Stripe’s checkout has been refined over years of A/B testing.
What you get free: Unlimited one-off and recurring invoices, automated reminders, hosted payment pages, customer portal, multi-currency.
The cost: 2.9% + $0.30 per card transaction.
Best for: SaaS companies, tech agencies, and developers who already use Stripe.
7. Bookipi — Best Lightweight Free Mobile Invoicing
Bookipi is a mobile-first invoicing app with a permanently free plan. It is purpose-built for tradespeople, contractors, and field-service businesses who invoice from their phone immediately after completing a job. The free tier supports unlimited invoices and basic templates.
It does not pretend to be accounting software, which is a feature for users who just need to send invoices and get paid.
What you get free: Unlimited invoices, mobile-first interface, basic templates, payment links, PDF export.
Best for: Tradespeople, mobile contractors, anyone who invoices from a phone in the field.
8. SumUp Invoices — Best for European Small Businesses
SumUp’s invoicing tool is free with no monthly cost; you pay only the standard SumUp transaction fee on payments. It is particularly strong in European markets, with native multi-currency support and integration with SumUp’s popular card readers.
What you get free: Unlimited invoices, automated reminders, hosted payment pages, integration with SumUp card readers.
Best for: European small businesses, retailers and service providers using SumUp for in-person card payments.
9. TheToolBus Invoice Generator — Best for One-Off Invoices Without an Account
For users who do not need ongoing client management, recurring billing, or a customer database, TheToolBus Invoice Generator is the simplest free option on the list. It is a browser-based tool that produces a clean PDF invoice in under a minute. No sign-up, no email collection, no account, no SaaS.
You fill in your business info, the customer info, the line items, and download a print-quality PDF. The data is saved to your browser locally so the next invoice starts where the last one left off, but nothing is uploaded to a server.
What you get free: Unlimited PDF invoices, multiple templates, currency selection (30 currencies), full customisation, browser-only with no account required.
The catch: No client database, no payment integration, no recurring invoices. It is a generator, not a CRM.
Best for: One-off invoices, side projects, freelancers who use a separate accounting tool and only need a quick PDF, anyone who values not creating yet another account.
How to Pick the Right One
| Need | Recommendation |
|---|---|
| Most polished free invoicing + accounting | Wave Accounting |
| Free invoicing only, no accounting bolt-on | Zoho Invoice |
| Self-host, full control, open source | Invoice Ninja |
| Already accept PayPal | PayPal Invoicing |
| Service business with Square card reader | Square Invoices |
| SaaS / tech business on Stripe | Stripe Invoicing |
| Mobile-first, invoice from the field | Bookipi |
| European small business | SumUp Invoices |
| One-off PDF, no account | TheToolBus Invoice Generator |
For most US-based freelancers and small businesses with no payment processor preference, Wave Accounting is the best place to start. It is genuinely free, the interface is polished, and the bundled accounting saves you from buying a second tool later.
For freelancers under the revenue threshold who do not want accounting features they will not use, Zoho Invoice is the cleaner option and has the best mobile experience in the category.
For one-off invoices — the kind you send three times a year and do not want to create an account for — TheToolBus Invoice Generator produces a professional PDF in under a minute with no account, no email, and no upsell.
Common Free Invoicing Software Mistakes to Avoid
Falling for “free” that is actually a trial. Always check whether the free tier has a time limit. If the page says “free for 14 days” or “free trial,” it is not free invoicing software — it is a paid product with a sample.
Picking a tool that does not match your payment flow. If your customers pay by PayPal, do not choose Stripe Invoicing. If you process payments in person with Square, adding a separate invoicing tool creates reconciliation work. The right tool sits inside your existing payment flow.
Choosing accounting software when you only need invoicing. Wave includes accounting. Zoho Invoice does not. If your bookkeeper handles your accounts in QuickBooks or Xero already, you do not need a second accounting layer; you need a focused invoicing tool that exports to your accounting software.
Letting the free tier drive product choice when the paid tier is what you actually need. If your business is doing $200,000 in revenue and you need real time tracking, project budgeting, and client portal access, a $20/month invoicing tool will pay for itself in saved hours within a week. “Free” is the right answer for most freelancers, not for every business.
Putting It Into Practice
The right free invoicing software for you is the one that fits the way you already get paid and is genuinely free at the volume you actually invoice. For solo freelancers and side hustles, that is almost always Wave or Zoho Invoice. For one-off invoices a few times a year, it is a no-account browser tool like TheToolBus Invoice Generator. For agencies on Stripe, it is Stripe Invoicing.
Pick one, send your next invoice through it, and pay attention to the friction. The right tool is the one you will keep using when the next invoice goes out — not the one with the best feature list on a comparison page.