Tell us the country, calculator, and what looked wrong — a screenshot helps a lot.
Request a country
Let us know which country you'd like to see added next.
Press & media
Journalists quoting our figures or asking about tax changes: tell us your deadline and outlet. For partnerships, see below.
Something else
General feedback, questions, or anything else — we're happy to hear it.
Collaborations & partnerships
We like working with tax professionals, finance publishers, software makers and other sites that help people understand their taxes. If you'd like to work with us on any of the ideas below, email support@incometax.tools. Please include a few lines about who you are, your website, and what you have in mind. A subject line starting with "Partnership: " (for example, "Partnership: guest post on UK pensions") gets your email to the right person faster.
Collaborations: co-written tax guides, country-specific explainers, joint research on tax data, or help reviewing a calculator for a country or topic you know well.
Sponsorships: sponsoring a country hub, a calculator page or a guide. Sponsored placements are always labelled, and sponsors never have any say over our rates, results or editorial content.
Guest posts: writing a practical, original article for our blog. This suits chartered accountants, CPAs, enrolled agents and other tax practitioners especially well. We can also write for your site.
Link exchanges & resource links: useful, relevant links between our pages and yours, such as a calculator that complements your guide or a guide that explains your tool. No link farms or paid "do-follow" schemes.
Product links & affiliate partnerships: tax filing software, accounting and payroll tools, or financial products, where they genuinely help readers of the page they appear on.
Tax professionals & firms: being listed in our tax professional directory, or offering expert review of a country's calculators.
Anything else: if your idea doesn't fit these categories, send it anyway. We read every reasonable proposal.
Our calculators and figures are based only on official tax rules, and partnerships never change them. See our Affiliate Disclosure for how we handle paid and affiliate links on this site.
Note: we cannot provide personalized tax, legal, or filing advice by email. For your specific tax situation, please consult a qualified CA or your country's tax authority — see our disclaimer.