The Taxes Office in Jersey has apologised after 6% fewer tax assessments have been processed compared to this time last year.
Tax officers say the remaining assessments for 2016 will be completed by mid-January.
It follows a statement published two months ago which blamed staff training for a delay in the number of tax forms processed.
Furthermore some islanders have been sent their assessment without a 2018 ITIS rate because they need to work out their rate manually. Here, employers will be told to take the tax rate applied for December 2017 and use it in January 2018.
The Taxes Office has also apologised to islanders paying taxes by ITIS for the current year. It's after a message appeared on their assessment claiming the balance was payable. In some cases this is a mistake and should be ignored. Those affected will see a note on the top right hand corner of their assessment page.