Open Source JavaScript Tax Software

From invoicing to expense tracking to accounting, Akaunting has all the tools you need to manage your money online, for free. That's right, completely free. There is no limited or trial version. No hidden charges or setup fees. See your financials online anytime, anywhere on your computer, tablet or phone. Send professional and recurring invoices, get paid online through your client portal, connect your bank with Bank Feeds and reconcile in a few clicks. Real-time reports show exactly where your business stands, with drill-down to every transaction. Run multiple companies in multiple currencies, invite your team with roles and permissions, and work in 60+ languages, including right-to-left ones like Arabic and Persian. Need more? The Akaunting App Store lets you add double-entry accounting, inventory, payroll, CRM, projects and payment gateways like Stripe and PayPal, whenever your business is ready. Host it on your own server for free, or start instantly with Akaunting

A portfolio tracking, analytics, accounting and tax reporting application that respects your privacy

TaxGeek is a Mozilla-based US income tax program that includes Form 1040, Schedules A, B, C, C-EZ, D, E, K-1 (1065), SE (Short and Long), W2, Form 8880, Form 8863, and Form 2441 with access to most other files as PDFs.

How much will the taxman take? Input tax regime, filing status, income, and deductions.