What is TaxHacker used for?

TaxHacker is a self-hosted AI accounting app that extracts data from receipts, invoices and PDFs with LLMs and stores it in a structured, categorized database. It is a good fit for freelancer expense tracking, digitizing receipts for tax filing and small business bookkeeping with AI help.

Is TaxHacker open source?

Yes. TaxHacker is open source under the MIT licence. Its source code is on GitHub at vas3k/TaxHacker and is written mainly in TypeScript.

Yes. TaxHacker is open source, so the software itself is free to use.

Can I self-host TaxHacker?

Yes. TaxHacker can be self-hosted on your own server or infrastructure.

What is TaxHacker an alternative to?

TaxHacker is an open-source alternative to Expensify, SAP Concur, Zoho Expense and Emburse. Other open-source alternatives to Expensify include ERPNext, Dolibarr and Odoo.

Is TaxHacker actively maintained?

Yes. The most recent commit to TaxHacker was on 28 September 2026, and the latest release is v0.8.5, published on 20 July 2026. The project has 6.7k stars on GitHub.

TaxHacker: open-source alternative to Expensify, SAP Concur

About TaxHacker

TaxHacker is a self-hosted accounting app aimed at freelancers, indie hackers and small businesses that want to spend less time tracking expenses and income. You upload photos of receipts, invoices or PDFs, and an LLM extracts the details, including product names, amounts, items, dates, merchants and taxes, into a structured, spreadsheet-like database.

Custom fields can be defined with your own AI prompts to extract any extra information, and transactions are automatically sorted into categories. The app converts currencies, including crypto, using historical exchange rates from the transaction date, and offers filtering, multi-project support, import and export and custom categories to simplify reporting and tax filing. Topics mention OCR, Gemini, OpenAI and Ollama as model options.

Unsorted documents can be stored until you are ready to process them manually or with AI. TaxHacker is written in TypeScript and licensed under MIT, and the README warns that it is in early development and should be used at your own risk. It suits people comfortable self-hosting who want AI help with bookkeeping.

Key features

AI extraction from receipts and invoices
Custom fields defined by AI prompts
Automatic transaction categorization
Historical currency conversion including crypto
Support for multiple projects
Import and export of data
Works with OpenAI, Gemini or Ollama models

Good fit for

→Freelancer expense tracking
→Digitizing receipts for tax filing
→Small business bookkeeping with AI help

Built with: TypeScript
Tags: accounting; ai; expenses; receipts; invoices; self-hosted; ocr; taxes; llm

TaxHacker: questions and answers

What is TaxHacker used for?: TaxHacker is a self-hosted AI accounting app that extracts data from receipts, invoices and PDFs with LLMs and stores it in a structured, categorized database. It is a good fit for freelancer expense tracking, digitizing receipts for tax filing and small business bookkeeping with AI help.
Is TaxHacker open source?: Yes. TaxHacker is open source under the MIT licence. Its source code is on GitHub at vas3k/TaxHacker and is written mainly in TypeScript.
Is TaxHacker free?: Yes. TaxHacker is open source, so the software itself is free to use.
Can I self-host TaxHacker?: Yes. TaxHacker can be self-hosted on your own server or infrastructure.
What is TaxHacker an alternative to?: TaxHacker is an open-source alternative to Expensify, SAP Concur, Zoho Expense and Emburse. Other open-source alternatives to Expensify include ERPNext, Dolibarr and Odoo.
Is TaxHacker actively maintained?: Yes. The most recent commit to TaxHacker was on 28 September 2026, and the latest release is v0.8.5, published on 20 July 2026. The project has 6.7k stars on GitHub.