Go SDK for integration with the Integrated Tax Administration System (SIAT).

EU VAT number validation in Go using VIES SOAP service

Sales Tax API Client for Go

Go code to track the cost-basis of your cryptocurrency transactions, so you can file taxes with less headaches.

💷 💶 💵 Download monthly exchange rates from HMRC and generate corresponding CSV files.

Command-line (CLI) application that calculates the tax owed on profits or losses from stock market transactions.

Commandline quarterly tax calculator for simplified Ukrainian taxation system

VAT rates for 44 European countries — EU-27 plus Norway, Switzerland, UK, and more. Updated daily from EC TEDB.

A simple CLI program for estimating one's 2022 state income tax for a given taxable income in all 50 states at once (plus DC and federal)

Capital Gains CLI Calculator allows you to calculate the capital gains tax of one or more transactions

Automatic notifications for Portuguese tax deadlines (SegSoc, IVA, IRS) via ntfy.sh

Taxes are annoying and I don't wanna pay anybody for it... so I'm doing it myself. Wish me luck ;)

Blockchain Based Tax Collection Network

Control connected packages in Golang

A Go library for calculating Japanese Consumption Tax.

CLI tool that generates GST tax invoices from partner CSV data and emails them via SendGrid

A simple Go-based wrapper for TaxAPI.io