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5 Best Free Invoicing Apps for UK Small Businesses

Today we are looking at the five best free invoicing options for small businesses, freelancers, trades and charities in the UK that need to create invoices.

by Chris Hargenson

by Chris Hargenson

27 April 2025

You’ve quit your job and setup your own business. You’ve found an accountant, have a VAT number, business cards and even a logo designed; you are brimming with enthusiasm. What you don’t have in terms of business track record is more than made up with professionalism and gumption. You find your market, bid for work, win, and knock out your jobs. You now need to invoice your customer in order to get paid.

Dismissing the full-on accounts packages as too much, in terms of cost and learning (the cheapest Xero plan at time of writing is £230*a year), you plough ahead and start looking at the free options.

In this day and age when we are all being squeezed financially it makes perfect sense to explore the free options first and work your way up.

If that is you, then you’ve come to the right place. Today we are looking at the 5 best free invoicing options for small businesses, freelancers, trades and charities in the UK that need to create invoices.

We do however, have some rules.

  1. All apps have to be entirely free to qualify. Free trials don’t cut it. For this article free actually needs to means free.
  2. These apps need to work for UK businesses in GBP.
  3. These apps need to work on desktop, tablet and phone.

We tested these apps by creating one product, customer and invoice and noted their general interoperability and ease of use. We also noted the things that annoyed us most.

Important to note

Another consideration is the use of free subscription tiers in popular business software, which is a growing marketing method designed to entice the might-be subscriber. Many of the corporate players in this market utilise a form of tiering in some way.

The play is straightforward… that you start with the free tier of a subscription on their platform & feel compelled to upgrade to the pro paid version. The free tier for many apps gives you access to evaluate the tool in the real-world situation without time limits. However, the trade-off with free tiers are typically manufactured restrictions & limitations that can reduce or nullify the apps utility. This can take the form of only allowing x invoices or x clients per month or other usage restrictions. However, we haven’t disqualified entrants on that basis, because these restrictions might not affect you.

Right… to the reviews. 

 

The candidates

Name Score
Zoho Invoice 5 / 10
Envoyce Free & Open Invoicing 9 / 10
Wave invoicing 5 / 10
Square Invoices 3 /10
Invoice Ninja 6 /10


Zoho Invoice |

 Zoho Invoice

Zoho Invoice, Lots of features, not much finesse

 

The Zoho app is part of a larger eco system of Zoho business tools. The free tier offers everything you need to generate invoices and worked as expected, however it can be rather a clunky experience. It was throwing an error about tax but it wasn’t obvious what I actually had to do to fix it.

 It has a restriction on use, but does allow you to customise your invoices. Like many apps of this type, it's pushing its payment links feature but it’s not mandatory.

The interface is primarily a large form that you add your data to. At first it seemed rather complicated and comprehensive but lots of the features you can ignore. It didn’t seem to share the products with the quotes function, which is a shame.

Conclusion

My overriding comment was that Zoho Invoicing is a totally competent invoicing App but rather too manual & complicated especially for small businesses that won’t need the advanced features.


Envoyce Free & Open invoicing |

 Envoyce free & open invoicing

Envoyce, the basics executed well

 

The main outlier in this roundup is Envoyce. Envoyce is free to use and has no pro tier on offer, but offers all you need to create and track invoices. From the off, Envoyce looks like it has been designed from a user experience perspective. Envoyce had the cleanest invoice creation workflow and seems to be all about efficiency, but it may lack some critical functionality. A consideration is that you can’t currently change the invoice template. You can upload a business logo but that’s it. 

Additionally, it doesn’t support payment links as the other apps do. If you are predominately selling B2B where your customers are medium to large corporates, payment links would be redundant but the inclusion of a purchase order number, critical.

The interface is very clean and adopts a minimalistic approach instead of bombarding you with countless options and settings. Envoyce is really targeting small businesses, sole traders and perhaps technophobes, and has the shallowest learning curve.

Conclusion

We very much liked using Envoyce especially its sliding panel design, which allows you to preview your invoice as you build it. Best of all everything is kept on one page without incessant scrolling. It truly is the easiest invoice generator.


Wave invoicing |

 

Wave invoicing
Wave, great for payment links, a bit clunky.

 

Like Zoho, Wave are pushing payment links and offer a set price upfront on their free tier. The pro version of wave has more features and a lower price for payment processing. Wave is a full accounting system. The invoice creation is rather like the Zoho platform. It’s a large form that you fill out. It’s a large long form that just gets longer. After approval you can send out your invoice. It worked fine and as expected and I am sure you would get used to the interface.

 Front and centre on their website is the ability to customise your invoices. If you really think your customer cares a hoot about that, then this app might be for you.

Its doesn’t seem to have any restrictions or limits to usage which is great. A minor annoyance is that it’s really pushing payment links. Clearly payment links are a significant source of revenue for them in order for them to offer free use of their app.

Conclusion

A better workflow that Zoho, but not much better. Full accounting system. 

 

Square Invoices |

Square invoicing
Square invoices, A bit too basic

 

Square is a payment processor and offers a free tier for its service. It seems to be all about how you are paid rather generating the invoice. A myriad of methods to allow your customers to pay you instantly, by instalments and more. To be honest, this is what I should have expected from a company that is interested in payment processing and not invoicing so much.

 The invoice creation workflow can be considered as “basic” and much simpler than Zoho or Wave, but I liked the styling which is very Square centric if you have used their other products.

The payment options are comprehensive. It defaults to using Square payments (as expected) but the payment processing options was significantly more than the other vendors. It also offers the ability to add a tip. Make up you own mind about that. However, it doesn’t offer (that I could find) an invoice preview, which wasn’t great.

Conclusion

The basics, Perhaps best for stores or small ecommerce businesses.


Invoice Ninja |

 Invoice ninja

Invoice ninja. Always pushing the upsell

 

Off the bat, invoice ninja has a free tier but limited to 5 clients only. This for many will be s instant showstopper. Like the others. it has payment links and multiple invoicing template. However, you’ll need the pro version if you want to email you invoices via Gmail & MSN.

 The workflow is satisfactory but the styling and aesthetics rather blocky and uninspiring.

The main annoyance with Invoice Ninja is the Pro upsell which gets to be rather a fag. Its touts itself as open source, but it isn’t really. I suspect the app is targeting medium to larger business considering the features they offer.

Conclusion

If the free tier client restriction is not an issue for you, then may invoice ninja might be a good option.


Wrapping up

If you don’t need or use payment links, then our outstanding recommendation would be Envoyce it free to use with no restrictions. Of the others, Wave seems to have a good balance of features you might need.

However, with the Exception of Envoyce, all the other apps seem to be entirely focused on either selling you payment links or upselling you to a paid tier. The jury is out about payment links and their usefulness, however if you set that aside. All these invoice creation apps did actually do as they claimed. Just some much-much better than others.


• £16 + VAT (3.20) x 12 months

 

Still confused? 

I’m not surprised, selecting an invoicing vendor can be a challenge, but it needn’t be.

Envoyce is a free & open invoicing platform that is focused on its ease of use and efficiency. At Envoyce, we have no shareholders and our primary desire is to improve the invoicing experience. We offer an unrestricted base platform with paid add-ons as you need them. 

Try Envoyce today, sign up here.