[ANN] FinancialBeancount — Multi-platform bill deduplication tool for China

[Cacinie Avery]

 Hi everyone,

  I'd like to share a tool I've been working on:

  FinancialBeancount — a local Beancount converter and deduplicator for
  Alipay, WeChat Pay, and bank statements.

  Repository: https://github.com/CacinieP/FinancialBeancount

  The problem it solves:
  If you use multiple payment platforms in China (Alipay, WeChat Pay, bank
  cards), the same transaction often appears in 2-3 different statement
  exports. Importing them all into Beancount creates duplicates. Existing
  importers handle one platform at a time, with no cross-platform
  deduplication.

  Key features:
  - Three-level fingerprint deduplication (L1 exact / L2 loose / L3 fuzzy)
    to catch duplicates across Alipay, WeChat, and bank statements
  - Multi-format support: CSV, XLSX, PDF (via pdfplumber)
  - Refund detection and incremental processing
  - Smart account classification following Beancount best practices
  - Privacy-first: all processing is local, no data leaves your machine

  It's pip-installable (pip install financial-beancount) with a CLI entry
  point (beancount-dedup), and includes a comprehensive test suite.

  Feedback and contributions welcome!

  Best,
  CacinieP