💰 Billing & Payments knowledge for cloud platforms

Crypto-currency tax calculator with support for all popular wallets, exchanges, explorers and migration from other crypto tax platforms

💰 International sales tax calculator for Node (offline, but provides optional online VAT number fraud check). Tax rates are kept up-to-date.

Factura Electrónica AFIP y otros servicios web (proyecto software libre) — Interfases, tools and apps for Argentina's gov't. webservices (soap, com/dll simil-ocx, pdf, dbf, xml, json, etc.) #python

Privacy-focused, free, open-source cryptocurrency tax calculator for multiple countries: it handles multiple coins/exchanges and computes long/short-term capital gains, cost bases, in/out lot relationships/fractioning, and account balances. It supports FIFO, LIFO, HIFO and it outputs in form 8949 format. It has a programmable plugin architecture

A tax calculator for stocks and dividends activities.

GitHub Sponsorsの確定申告手順

Calculate your taxes from cryptocurrency gains

The PolicyEngine US Python package contains a rules engine of the US tax-benefit system, and microdata generation for microsimulation analysis.

💰 A simple and clean PHP library that validates EU VAT registration numbers against the central ec.europa.eu database (using the official europa API) 🇪🇺

💸 {Digital,Cloud,Electronic,Online} Services VAT Rate Database

CA property tax visualization

ERPNext application for Switzerland-specific use cases

A set of interfaces and methods to clean up your application's tax calculations

An implementation of Saudi Arabia ZATCA's E-Invoicing requirements, processes, and standards in TypeScript.

Sales Tax API Client for PHP 5.5+

Parse Robinhood 1099 Tax Document from PDF into CSV

prepare German tax statement with Tastyworks transaction history

DaLI (Data Loader Interface) is a data loader and input generator for RP2 (https://pypi.org/project/rp2), the privacy-focused, free, open-source cryptocurrency tax calculator: DaLI removes the need to manually prepare RP2 input files. Just like RP2, DaLI is also free, open-source and it prioritizes user privacy.

A small yet valid double-entry accounting system in Python and command line.