What is tax code k330?

Tax code K330 indicates that an individual's income is subject to a higher rate of tax because they have lost their personal allowance due to high income. The "K" prefix signifies that the individual has a negative tax code, meaning their allowances are outweighed by deductions, such as benefits in kind or unpaid taxes. The "330" part indicates the specific amount that will be deducted from their income for tax purposes. Essentially, it means the taxpayer will pay more tax than usual.