Observed arrival · 2026-09-18
taxjson — a broker-CSV tax calculator with receipts
An open-source, on-device command-line tool that turns brokerage exports into Canadian capital-gains books and tax-form-ready reports.
- For
- Investors reconciling broker exports for Canadian tax filing
- Worth noticing
- The wash radar reports losses denied across taxable, RRSP, and TFSA accounts, with the deferred amount shown.
Field notes
The tool uses a local folder workflow: broker exports go into account-specific inputs directories, while configuration stores the country, province, tax year, and base currency. Its documentation describes cross-account superficial-loss checks, settlement-date handling, options treatment, corporate-action elections, and manual position history in .tt files. The US engine is explicitly labeled experimental. Linked project materials include REFERENCES.md, KNOWN_ISSUES.md, SECURITY.md, and a changelog.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
One card from the complete issue