Where do I find import duty rates by country?
On that country's own tariff authority, not on a table like this one. Duty rates are set per country, per tariff line, and revised on each government's own schedule, so the only current source is the lookup tool the destination country itself publishes — the US Harmonized Tariff Schedule search at hts.usitc.gov for goods entering the United States, and the equivalent tool run by each other country for goods entering theirs.
Is there one table that covers every country's duty rates?
No, and a page claiming to have one is guessing. Each country classifies goods under its own version of the Harmonized System, sets its own rates, and revises them on its own timeline — sometimes several times a year. A static table is out of date the day a government changes a rate line, which is why every reference below points to a live government tool instead of printing numbers.
How do I check the duty rate for something I'm exporting from the US?
Trade.gov's FTA Tariff Tool is built for exactly that when the destination is a US free trade agreement partner: it looks up tariff information and origin requirements by product across all US FTA partner countries, covering all 97 chapters of the Harmonized System. For a destination without an FTA, the country's own tariff authority — several are listed on this page — is the only current source.
How do I check the duty rate for something entering the US?
At hts.usitc.gov, the Harmonized Tariff Schedule search run by the US International Trade Commission. Our separate guide to US import duty rates walks through reading the General, Special and Column 2 columns it returns; this page's job is pointing to the right tool for a given country, not re-explaining that one in depth.
Why do UK, EU and Australia guidance sometimes disagree on the same product?
Because they are different legal systems classifying the same physical object under their own rules. The UK left the EU's TARIC system and runs its own Online Tariff; the EU classifies under TARIC through its Access2Markets tool; Australia runs its own Working Tariff. A product can sit under a different tariff line, and a different rate, in each one — there is no single global duty rate for anything.