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

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

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

💰 Billing & Payments knowledge for cloud platforms

Official XSD from the Government of Angola for use in SAF-T AO

ERPNext application for Switzerland-specific use cases

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

Sales Tax API SDK for Ruby and AvaTax REST

This module allows you to manage all freight operations (Air, Ocean, and Land). For ocean it allows you to manage both FCL and LCL shipments and for land it allows you to manage both FTL and LTL, it is a comprehensive platform that gives you the chance to manage all aspects of your freight forwarding operations.

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

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

Improve your Solidus store's sales tax decision automation with Avalara AvaTax

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.

Sales Tax API Client for Ruby

A tax calculator for stocks and dividends activities.

Country model of Canada's tax-benefit system, using PolicyEngine Core.

Calculate your taxes from cryptocurrency gains

Magento 2 Sales Tax Extension by TaxJar

The TaxData project prepares microdata for use with the Tax-Calculator microsimulation project.

WooCommerce Sales Tax Plugin by TaxJar