head to head · open source
Invoice Ninja vs TaxHacker
Invoice Ninja has 10,464 GitHub stars, 2,793 forks, 945 open issues and last shipped yesterday. TaxHacker has 6,792 stars, 1,098 forks, 42 open issues and last shipped 3 days ago. Invoice Ninja leads on adoption by 54% (10,464 vs 6,792 stars). Invoice Ninja is written in PHP under a custom or non-standard licence; TaxHacker is written in TypeScript under MIT. Invoice Ninja has attracted 27% as many forks as stars, TaxHacker 16%. Invoice Ninja was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (expenses, invoices), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| Invoice Ninja | TaxHacker | |
|---|---|---|
| GitHub stars | ★ 10K | ★ 6.8K |
| License | Custom / other | MIT |
| Written in | PHP | TypeScript |
| Last push | 2026-11-02 | 2026-10-31 |
| Forks | ⑂ 2.8K | ⑂ 1.1K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Invoice Ninja if
- You weight community size — 10K stars and counting
- You want the Custom / other license terms
- Your stack matches PHP
- You value the larger contributor base for long-term maintenance
pick TaxHacker if
- You want the TaxHacker feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and TaxHacker fits your workflow better
About Invoice Ninja
Invoice Ninja 5 Invoice Ninja Version 5 is here! We've taken the best parts of version 4 and added the most requested features to create an invoicing application like no other. Check the Invoice Ninja YouTube Channel to get up to speed, or try the Demo now. Choose your setup Hosted: Our hosted version is a Software as a Service (SaaS) solution. You're up and running in under 5 minutes, with no need to worry about hosting or server infrastructure. Self Hosted: For those who prefer to manage their own hosting and server infrastructure. This version gives you full control and flexibility. All Pro and Enterprise…
read the full Invoice Ninja overview →
About TaxHacker
TaxHacker: Self Hosted AI Accounting [!NOTE] ☝️ I'm currently looking for a job! Particularly interested in companies in Berlin or remote positions in Germany. Here's my CV and Linkedin profile. Thank you 🙏 TaxHacker is a self hosted accounting app designed for freelancers, indie hackers, and small businesses who want to save time and automate expense and income tracking using the power of modern AI. Upload photos of receipts, invoices, or PDFs, and TaxHacker will automatically recognize and extract all the important data you need for accounting: product names, amounts, items, dates, merchants, taxes, and save…
read the full TaxHacker overview →
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Frequently asked questions
Is Invoice Ninja or TaxHacker more popular?
Invoice Ninja has 10,464 GitHub stars and TaxHacker has 6,792. Invoice Ninja has the larger community by that measure.
Are Invoice Ninja and TaxHacker free?
Both are open source. Invoice Ninja has no licence declared in this registry, and TaxHacker is licensed under MIT. Both are free to self-host.
What is the difference between Invoice Ninja and TaxHacker?
Invoice Ninja is written in PHP and TaxHacker in TypeScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Invoice Ninja or TaxHacker?
Choose Invoice Ninja if you want the larger community (10,464 stars) or its Custom / other licence terms. Choose TaxHacker if its feature set, stack or MIT licence fits better. Both are self-hostable.