An open source tax engine so all Americans can do their taxes using simple copy and paste

A RESTful web API for federal, state, utility and local rebates, tax credits and other electrification incentives.

Your #1 source on information about registering a business and beginning your entrepreneurial journey

WooCommerce Tax Plugin by Quaderno

Handle all the hard stuff related to EU MOSS tax/vat regulations, the way it should be.

Research done as RA for PTAXSIM project with CMAP and UIC.

Commandline quarterly tax calculator for simplified Ukrainian taxation system

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.

USA Federal Individual Income and Payroll Tax Microsimulation Model

A small universal SwiftUI macOS/iOS app to calculate US Taxes (Federal, CA & NY supported). Updated for 2022.

Python package for measuring assessment performance

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

Get a country VAT rate. ISO 3166-1 compliant.

Calculates income taxes in Georgia

R package for estimating Cook County property tax bills

A simple tax calculator for freelancers working as sole traders (PFA) in Romania.

Generate Tax reports of your brokerage account for your country's Tax Authority

Idea behind the StatementParser is, that it would be nice to be able to process financial data from different kind of statements in automatized way. This is often pretty hard as brokers are giving these data only in form of xls/xlst/pdf or other format which is not directly processable and here comes StatmentParser.

TypeScript implementation of common HMRC Income Tax use cases

A application to calculate taxes on shopping products