Best Invoicing Software for Freelancers and Small Business 2026: 10 Compared

The short version: For most freelancers I'd start with FreshBooks or Zoho Invoice, for VAT-registered UK small businesses Xero is the safer long-term bet, and if you're broke and just need to send a professional invoice today, Wave and Zoho are both free and good enough. The software matters far less than what you do after you press send, and I'll get to that.

Why I've tried nearly all of these myself

I've run my own business for over two decades, and in that time I've invoiced through at least seven different systems, sometimes by choice, sometimes because a client's finance team insisted on it. I started on spreadsheets and PayPal invoices in the early days, moved to FreshBooks when I got tired of chasing my own numbering errors, tried Xero when my accountant asked me to, and now use a mix depending on the client and the country I'm billing.

One story that still makes me wince: a US client took four months to pay a £3,200 invoice, not because the software failed, but because I sent it once and assumed it would sort itself out. When I finally set up automatic reminders in FreshBooks at day 7, day 14 and day 30, the same client paid the next invoice in nine days. Same client, same amount, different follow-up system. That's the bit nobody tells you when they're comparing software features.

What matters when you're choosing

Before the list, here's what I'd check, because most comparison posts focus on logos and skip the parts that bite you six months in. If you want the fuller breakdown of this, I wrote a separate piece on what features freelancers should look for in an invoicing app, but the short version is:

• Can it handle recurring invoices and automatic late payment reminders without you lifting a finger
• Does it support the currencies and VAT/sales tax rules for where you and your clients are
• What's the real cost of getting paid, not the subscription price but the card processing fee on top
• Can your accountant export clean reports from it, because a pretty invoice means nothing if your bookkeeper hates the software
• Does it let you attach a contract or estimate to the same invoice trail, useful if you're chasing scope creep

If you're a service business that also takes bookings, this matters even more, since a lot of the pain comes from invoicing and scheduling living in two different apps. I covered that overlap in which booking tools work best for solo business owners, because for coaches, consultants and therapists the booking tool often decides the invoicing tool for you.

The 10 compared

1. FreshBooks

Pricing in 2026 runs roughly £15 to £48 a month depending on the plan and client count, with a Select tier for larger teams. This is where I've spent the most years, and the reason is the automatic late reminders and the client view where they can see payment history without emailing me to ask "did I pay this already". Best for freelancers and small agencies who bill 5 to 50 clients a month and want something that feels human rather than like accounting software.

2. QuickBooks Online

UK plans start around £16 a month for Simple Start, climbing past £40 for Advanced. This is the one accountants recommend most often, mainly because so many UK bookkeepers are already trained on it. Good if you plan to grow a team and need payroll and VAT filing bolted onto the same system. Overkill if you're a solo writer sending four invoices a month.

3. Wave

Free invoicing and accounting, full stop, with payment processing fees around 2.9% plus 60 cents per card transaction and 1% for bank payments. I used Wave for two years when I was rebuilding my client base and needed something with zero monthly cost. The catch is support is limited and it's US and Canada focused, so UK VAT handling is clunkier than it should be.

4. Xero

UK pricing sits around £16 a month for the Ignite plan up to £47 for Comprehensive. Xero is the one I moved to once my turnover crossed the VAT threshold, because Making Tax Digital compliance and multi-currency invoicing are built in, not bolted on. If you're a limited company or expect to be soon, start here rather than switching later, because migrating invoice history between systems is more painful than people admit.

5. Zoho Invoice

Completely free, no catch, no client limit on the core invoicing product, though Zoho makes its money on the wider suite of apps around it. If you're a new freelancer with almost no budget, this is the one I'd point you to first. The interface looks slightly less polished than FreshBooks but it does the job of sending, tracking and reminding without costing you a penny.

6. Invoice Ninja

Free if you self-host, or from around $10 a month hosted. Popular with developers and technically minded freelancers who want to own their data rather than rent it. Not the tool I'd hand to someone who's never touched software settings before, but strong if you want client portals, quotes, and recurring billing without vendor lock-in.

7. Bonsai

Runs roughly $17 to $52 a month and is built specifically for freelancers, bundling contracts, proposals and time tracking with the invoicing. I've recommended this to several coaching clients who kept getting burned by scope creep, because the contract and invoice live in the same thread and clients can e-sign before you start work. Worth the extra cost if unpaid work is a bigger problem for you than unpaid invoices.

8. Square Invoices

Free to send, with a card processing fee of 2.9% plus 30 cents per paid invoice. If you already use Square for in-person card payments, a market stall, a studio, a salon, this is the obvious add-on because everything sits in one dashboard. Less useful if you never take in-person payments at all.

9. Stripe Invoicing

Free to create, with a small fee on low invoice volume rising to the standard 2.9% plus 30 cents for card payments once you're past the free tier. This is the one I'd point developers, SaaS founders and anyone already using Stripe for subscriptions toward, since the invoice and the recurring billing sit in the same account. Not built for someone who wants a simple, friendly interface, it's more of a builder's tool.

10. PayPal Invoicing

Free to send, fees around 2.9% to 3.49% plus a fixed fee depending on currency and country. This is where most freelancers start because everyone has a PayPal account, and it's still fine for occasional, low volume invoicing. The problem is it looks the least professional of the ten, and clients paying internationally sometimes get hit with PayPal's own conversion rate, which isn't your fault but you'll get the annoyed email about it anyway.

The uncomfortable bit about all ten of these

Here's what I've learned after two decades of this: the software has never once been the reason I got paid late. It's always been my own follow-up, or lack of it. I've watched consultants spend three days comparing invoicing platforms while sitting on £40,000 of unpaid invoices they hadn't chased in six weeks. Nobody wants to hear that the answer is "set a reminder and call the client", because that's less satisfying than switching software, but it's true. Pick a tool from this list that handles automatic reminders, turn that feature on, and you'll fix more late payments than any migration to a "better" system ever will.

That said, the tool does matter for one thing: making the invoice itself look and behave correctly in the first place. If you've never mapped out what a proper invoice needs to include, from payment terms to your registered business details, it's worth reading through what invoicing someone involves step by step, because a surprising number of freelancers send invoices missing basic legal detail and then wonder why payment gets delayed while the client's finance team asks questions.

A quick word on registration and VAT before you pick

One thing that trips up new freelancers, especially writers moving from employment into self-employment, is assuming you need some formal business licence before you can invoice anyone. In most cases you don't, you need to register as self-employed with the right tax authority and keep records, which is a very different thing. I broke this down for writers specifically in whether freelance writers need a business licence in the UK and US, and the short answer changes which invoicing plan you need, since sole traders under the VAT threshold can skip a lot of the compliance features these platforms charge extra for.

If you're also managing client relationships, not just invoices

A few of these platforms, FreshBooks and Zoho in particular, blur into light CRM territory once you're tracking client history, past invoices and notes in one place. If the term keeps coming up in comparisons and you're not sure it applies to you, I explained it plainly in what CRM means in business terms. For most solo freelancers you don't need a separate CRM on top of your invoicing tool, the client notes feature inside FreshBooks or Zoho is enough until you're managing more than about 30 active clients at once.

How I'd choose, step by step

• Step 1: work out your monthly invoice volume, under 10 a month favours free tools like Zoho or Wave, over 20 favours FreshBooks or Xero where automation saves real time
• Step 2: check if you're VAT registered or expect to be within 12 months, if yes go straight to Xero or QuickBooks and skip the free tools
• Step 3: add up the card processing fee on your average invoice size, on a £2,000 invoice, a 2.9% fee is £58, on ten invoices a month that's £580 you're losing to fees alone, so compare that against the subscription cost of a tool with lower or flat fees
• Step 4: turn on automatic payment reminders on day one, don't wait until you have a late invoice to discover the setting exists
• Step 5: export a sample report and send it to your accountant before you commit for the year, ask them directly if they can work with it

I switched three clients off PayPal invoicing onto FreshBooks last year purely because the reminder automation alone cut their average payment time from 34 days to 19 days. That's not a subscription upgrade paying for itself in features, that's a subscription upgrade paying for itself in cash flow.

This guide is part of my AI for Small Business: 25 Plain-English Guides to Automation, Marketing, Sales and Admin.

For guest contributors covering this area, read Technology Blogs That Accept Guest Posts (And Pay Attention to Pitches).

Related: writing for us on software.

Frequently asked questions

What is the best free invoicing software for freelancers in 2026?

Zoho Invoice and Wave are both free with no client limits on the core invoicing product, and either is fine for someone sending under 15 invoices a month who doesn't need advanced automation.

Do I need accounting software or just invoicing software?

If you're a sole trader under the VAT threshold with simple expenses, invoicing software alone is often enough, and your accountant can handle the rest from bank statements. Once you're VAT registered or running payroll, move to full accounting software like Xero or QuickBooks so everything reconciles automatically.

Which invoicing software has the lowest payment processing fees?

Wave's bank transfer fee of around 1% is lower than the roughly 2.9% card fee most platforms charge, so encouraging clients to pay by bank transfer where possible saves real money on larger invoices, sometimes hundreds of pounds a month once volume adds up.

Will switching invoicing software get me paid faster?

Not on its own. What gets you paid faster is clear payment terms, automatic reminders switched on, and a follow-up call at day 14 rather than day 45, all of which most of these tools can do, so the win comes from using the features you already have rather than from the migration itself.

Further reading

• the UK government's business support pages