Unemployed and self-employed islanders can opt to have their social security contributions based on their 2020 income if they're worse off because of the coronavirus pandemic.
Revenue Service is offering the switch to those whose earnings have dropped significantly.
People who work for themselves, or not at all have the option of having their social security contributions based on current year income, rather than on the two previous years.
The change is due to be made for everyone next year - to align deductions with Income Tax.
But it has been brought forward for those whose finances are less than in 2018 because of the pandemic.
Those affected are being written to with details of their new lower rate.

The Red Arrows pull out of performing over Guernsey
Guernsey's Ladies' Pool reopens after pollution incident
Passengers at Guernsey Airport told to expect some flight disruption
Guernsey flights impacted by UK air traffic control issue
Engine fault sees private jet diverted to Guernsey Airport
Travel issues ahead of Channel Islands Pride
WATCH: Car 'sails' from Guernsey to Sark
Guernsey donates to Nepali disaster relief effort