Jersey's tax office has denied miscalculating islanders' new tax rates, revealing that 9,500 2018 tax returns still need to be processed.
It says it has been contacted by a number of islanders who believe their rates have not been calculated correctly - however, it says there is no evidence to support those claims.
Instead, in many cases, it says taxpayers either simply did not realise they had tax outstanding from the previous year, or they have not understood the impact of changes in their personal circumstances.
However, one leading accountant says he has seen errors in ITIS assessments, leaving clients confused and worried by delays to 2018 tax bills.
Islanders have also faced delays in receiving their 2018 tax return, with delays due to a digitisation of the tax system cited as the main cause of the problem.
The government says around 9,500 2018 returns have yet to be processed - with the tax office having to rely on 2017 data in some cases. It says while this can be 'frustrating', it is what it is legally bound to do in the circumstances.