Taxes hub
Tax planning tools by country
Choose a country to reach the tax arithmetic and invoice workflows currently available on CalcBusiness.
Tax pages are educational estimates, not legal, accounting, or payroll advice. Each calculator states its scope, source date, and important exclusions.
United States
1099 tax, self-employment planning, quarterly guidance, and simplified state paycheck comparisons.
Canada
GST/HST, Quebec TPS/TVQ, province selector, invoice-tax, and quote workflows.
Québec en français
Salaire net, TPS/TVQ, travail autonome et facturation internationale expliqués en français.
United Kingdom
VAT arithmetic, invoice requirements, and Flat Rate Scheme boundaries.
Australia
GST arithmetic, tax-invoice requirements, and BAS workflow boundaries.
Methodology
How tax tools are verified, tested, and updated before release.
Disclaimer
The legal and practical limits of educational tax estimates on the site.
Four countries, one place to run the numbers
Taxes are the area where a wrong number costs the most, and where the rules differ most from one country to the next. This hub groups CalcBusiness tax tools by country — the United States, Canada, the United Kingdom, and Australia — so you can go straight to the calculators and workflows that match where you live and work.
Coverage differs by country. The US section includes federal contractor models and a simplified state-paycheck comparison. Canada, the UK, and Australia focus on the sales-tax, VAT, GST, and invoice workflows explicitly listed on their hubs. Each page identifies the source and the parts the tool does not decide.
Estimates to plan with, not advice
These tools provide transparent arithmetic for planning. They run in your browser, so the income figures you enter are not uploaded by the calculators.
They are not a substitute for professional advice. Tax situations vary with credits, deductions, and personal circumstances the calculators do not capture. For a filing or a decision with real consequences, confirm the numbers with the relevant tax authority or a qualified adviser.
Frequently asked questions
Which countries do the tax tools cover?
The United States, Canada, the United Kingdom, and Australia. US coverage is the deepest, including take-home pay for all 50 states plus DC.
Are the rates current for 2026?
The dated calculators identify their 2026 parameters and verification date. The US state comparison is simplified and uses published rate tables rather than a complete implementation of every state return. Check the source note on the page you use.
Do you store the income I enter?
No. The calculators run on your device, so your salary and income figures are not sent to a server.
Is any of this tax advice?
No. Everything here is educational and for planning. Confirm decisions with the relevant tax authority or a qualified professional.