Assessment time limits: what are the time limits for excise assessments
Generally, there are two time limits to consider before making an assessment. They are
- the four year rule, and
- the one year rule.
Each of the limits determines a date by which the assessment must be made. For guidance on when an assessment is ‘made’ see EAIG15300
There is also a third time limit, the twenty year rule, which applies in cases involving deliberate behaviour giving rise to a penalty, failure to notify and wrongdoing. These cases are described in more detail at EAIG10400.