Terms of Use

Last updated: March 2026

Calculator Disclaimer

All calculators on RedBoxIQ provide estimates based on published UK tax rates, thresholds, and regulatory rules. They are intended for informational purposes only and do not constitute financial, tax, or legal advice.

Actual costs may vary based on your specific circumstances, reliefs, exemptions, and changes to rates after our last update. Always consult a qualified accountant, tax advisor, or solicitor before making business decisions based on these calculations.

Data Sources

We source rates and thresholds from official UK government publications including HMRC, gov.uk, the Bank of England, ONS, OBR, and the Valuation Office Agency. Data is published under the Open Government Licence v3.0.

Affiliate Relationships

RedBoxIQ contains affiliate links to third-party products and services. We may earn a commission when you click these links and make a purchase. This does not affect the price you pay. We only recommend tools we believe are genuinely useful.

Limitation of Liability

RedBoxIQ is provided “as is” without warranties of any kind. We are not liable for any losses or damages arising from the use of our calculators or reliance on information presented on this site.