tax-calculation

An open-source, rules-based engine for accurate and consistent Philippine tax calculations. Work in progress.

MCP server for French tax calculations and information - enables AI assistants to provide accurate French tax guidance

Motor de cálculo tributário brasileiro com precisão decimal arbitrária. ICMS, IPI, DIFAL, ST (5 cenários), CBS/IBS.

Free WordPress Plugin: Instantly calculate total product costs with our free Sales Tax Calculator. Compute combined U.S. state and local tax rates to know exactly what you'll pay. www.calculator.io/sales-tax-calculator/

A python program to automate the tax calculation by reading the XLS file for initial income and adding the coloum of "Tax Payable" in the same XLS file

TaxTracker: Characterize capital gains and qualify dividends based on trading activity.

Add line items, apply tax and a discount, and get the invoice total in any currency. Runs in your browser; nothing is stored.

Professional Open Source E-Invoicing System for PHP (Yii3) with UBL 2.4 and Peppol support

Deterministic AI-agent tax calculation engine: rules-as-data YAML plugins, zero-knowledge Fraction core, out-of-scope refusal, dual-path self-verification. LLM orchestrates; the engine computes. China 12.5/18 taxes + US/EU/JP samples.

A suite of web-based GST compliance engines for India: Time of Supply (TOS), Value of Supply (VOS), and Place of Supply (POS) logic tools for audit workflows.

A Ruby gem for calculating product taxes using the Washington DOR API, supporting manual tax rates and cart-based calculations.

🎫 An web application that calculates net earnings from various forms of taxation in Poland 〽️

A comprehensive web application designed to facilitate accurate and efficient VAT calculations. Built on the Laravel 11 framework, this project leverages modern web development practices to deliver a robust and user-friendly platform.

Multi-company water consumption tracking with vendor management, attendance-based billing, and invoice generation

Hệ thống quản lý bán hàng, tồn kho và cảnh báo thuế toàn diện cho Hộ Kinh Doanh

Fullstack web application for vehicle tax services, providing complete features including tax checking, online payment, and integrated user management.

Enterprise-grade Java payroll management system with OOP design, multiple employee types, tax calculations, and data persistence. professional application.

🏢 Enterprise-grade Java cost calculation system with advanced tax processing, discount management, and professional financial reporting. Features multi-mode calculations, currency formatting, input validation, and comprehensive business analytics. Perfect for e-commerce, retail, and educational applications.

Local-first Python toolkit for reconstructing Dutch Box 3 actual returns from supported bank, broker, and tax statements, with an auditable Streamlit dashboard.

Sidecar webhook listener that adds destination-based US sales tax to Invoice Ninja v5 invoices via the self-hosted OpenSalesTax engine