
Invoice Ninja
FreshBooks
Wave Accounting
Xero
QuickBooks Online
Invoicera
QuickBooks
E-invoicing software for freelancers and small businesses in the EU and Germany

Which is more popular?
Based on our record, FreeAgent seems to be more popular. It has been mentioned 1 time since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | billingengine.com | freeagent.com |
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| Platforms | — | |
| Company | Startup from Germany · 1 - 9 employees · 2017 | Startup from Scotland · 100 - 249 employees |
| Listed in |
In their own words, as submitted to SaaSHub.


Create invoices as compliant e-invoices (ZUGFeRD, XRechnung), receive incoming e-invoices in your own inbox, and export to DATEV. Free plan available.
No description of FreeAgent yet.
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


No analysis of BillingEngine yet.
Overall verdict
Why this product is good
Recommended for
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FreeAgent Online Accounting Software for Freelancers - Review
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing BillingEngine and FreeAgent.
BillingEngine's answer
BillingEngine is built around e-invoicing from the start. Every invoice is created as an e-invoice (ZUGFeRD and XRechnung, EN 16931), and every plan, including the free one, includes your own inbox for incoming e-invoices without a volume limit. Your tax advisor gets read-only access and can collect the DATEV data set themselves. Beyond the app, BillingEngine offers free tools that need no account (e-invoice validator, viewer, generator and Leitweg-ID checker), a documented REST API and an MCP server for AI assistants. Invoices can be written in six languages and 32 currencies, and all documents are archived in a GoBD-compliant way.
BillingEngine's answer
It is a focused, affordable tool for people who mainly need correct invoices. You get compliant e-invoices and an inbox for incoming ones on a permanently free plan, and the paid plans start at EUR 7.50 per month. There is no lock-in: all data can be exported at any time as DATEV, CSV, XLS, XML or PDF. If you want the full range of a large accounting suite, a bigger competitor may fit better. If you want simple invoicing that is ready for the e-invoicing mandate, BillingEngine is a good choice.
BillingEngine's answer
Freelancers, sole traders and small businesses in Germany, including small-business owners (Kleinunternehmer) and tradespeople, who write a moderate number of invoices and want them to be compliant without learning about XML formats. A second group is tax advisors, who work with their clients' data, and developers who connect invoicing to their own tools through the API.
BillingEngine's answer
BillingEngine was founded to offer small businesses a simple invoicing solution, something its founders could not find on the German market at the time. It launched in 2014 and has been developed continuously with its users and a small team. Since e-invoicing became mandatory for receiving invoices in Germany in 2025, e-invoices have moved to the center of the product. Today more than 2,500 active users rely on it. BillingEngine is developed by DesignBits in Hamburg.
Share your experience with using BillingEngine and FreeAgent. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


We have no reviews of BillingEngine yet. Be the first one to post
FreeAgent is an accounting software designed specifically for small-business owners. It only has one price — $24/month — and it comes with pretty much everything you’ll need from an accounting perspective. This...
The standout feature of this app is its automatization – each time you enter new bank statements, expenses, and invoices, FreeAgent automatically builds corresponding accounts in its system in real-time.
I can only speak to the UK, but I have found FreeAgent to be an amazing tool for running a limited company in the UK. I have managed to integrate all of my bank accounts, Barclays, wise, capital on tap and have...
Recommendations tracked on public social media and blogs since March 2021.


Tracking BillingEngine since Mar 2021.
Eg. I'm a huge fan of https://freeagent.com/ The problem is with your own government accepting bribes to keep things complicated and preventing new competing companies to enter the market, lowering costs and improving the experience. >... - Source: Hacker News / about 2 years ago
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