Officials are asking people to take a lateral flow test or a PCR test before arriving in the Bailiwick.
The guidance is a recommendation rather than a rule.
All passengers currently have to undergo testing or self-isolate on arrival.
Those who have travelled within the Common Travel Area have to buy packs of five lateral flows for £25. Anyone who has left the CTA in the 10 days before arriving in Guernsey must pay for a PCR test.
1/ Visitors travelling to the Bailiwick are being advised to carry out a lateral flow or PCR test before their journey.
— States of Guernsey (@Govgg) December 8, 2021
A pre-travel test is not a formal requirement for entering the Bailiwick, but all arrivals are required to test on arrival.
Read more: https://t.co/UBmMPkv9W4 pic.twitter.com/CT2ac41PfI
States officials are 'keen to highlight' that anyone who tests positive at the border will have to isolate for 10 days in 'suitable accommodation' that has to be paid for themselves.
They are also recommending that islanders check their travel insurance and the requirements of any countries they may visit before leaving as they can change at short notice.
Guernsey rabbits at risk from two deadly diseases
Exhibition to celebrate 90 Years of Guernsey's Ambulance Service
Guernsey sewage pipe repairs "unlikely to be a quick"
Guernsey FC to fight for promotion at Victoria Park
Move to return St Julian's House to Guernsey's emergency shelter
Jersey and Guernsey included in UK-Gulf trade deal
St Pier says States put investigation before his experience in P&R seat vote
Industry leaders warn against paying Guernsey's under 18s the same as adults
