Use this service to check the UK Global Tariff that will apply to goods you import from 1 January 2021. You can also check the difference between what you pay now and what you’ll pay from 1 January 2021.
The UK Global Tariff will apply to all goods you import from 1 January 2021 unless an exception applies. For example, the goods you’re importing:
are from a developing country that pays less or no duty because it’s part of the Generalised Scheme of Preferences are from a country that has a trade agreement with the UK have a relief or tariff suspension that’s operated by the UKIt will replace the current common external tariff.
https://www.gov.uk/check-tariffs-1-january-2021