IRS is a US government agency for tax responsibilities and provides tax filing, payment, and refund services.

Intuit is the best financial software for tax preparation and accounting solutions and is used by millions of individuals and businesses.

Deloitte is a professional services firm for audit, tax, and consulting services.

ADP offers industry-leading online payroll, HR, tax, compliance, and benefit administration solutions for small, midsized, and enterprise businesses.

USA.gov is the official U.S. government web portal that helps citizens locate and understand government benefits, programs, and information for life events.

New York State Government is the best resource for tax filing and government services, used by New York residents seeking assistance.

PwC is a professional services firm for audit, assurance, tax, and consulting services.

Thomson Reuters is a global content and technology company serving legal, tax, and risk professionals.

Belastingdienst is a government service for taxes and subsidies in the Netherlands.

React is a JavaScript library for building fast, modern web and native user interfaces using reusable components.

KPMG is a professional services firm for audit, tax, and advisory services.

EY is the best consulting firm for tax services and is used by businesses seeking sustainable growth and transformation.

The Australian Taxation Office is the best resource for taxation and superannuation information and is used by individuals and businesses across Australia.

Agenzia Entrate is a government agency in Italy providing tax and revenue services.

business.gov.au is the best resource for business support and grants in Australia and is used by entrepreneurs and small business owners.

Official website of the German Federal Ministry of Finance

Georgia.gov is the best resource for state services in Georgia and is used by residents and businesses in the Peach State.

Lemon Squeezy is a Software as a Service platform that offers a comprehensive suite of tools for software companies including payments, subscriptions, tax management, digital downloads, licensing, and email marketing.

Pastebin is the number one online text storage and sharing tool since 2002, offering syntax highlighting and secure paste options for developers and users.

Stiftung Warentest provides independent product tests and consumer advice across electronics, household goods, health, finance, insurance, and taxes.

UK's tax authority for tax collection and financial support

Ruby is an open-source programming language with a focus on simplicity and productivity, known for its elegant syntax and dynamic nature.

MS.GOV is the official state portal for Mississippi citizens, offering access to government services, tax information, driver services, business resources, and state official information.

FastSpring is a full-service global digital commerce platform and Merchant of Record for SaaS, software, and digital product companies seeking to simplify global sales and tax compliance.