Possible Clues:

• Duty agent's boss included in current job
• Presumably, you are pre-tax?
• One million smokers finally caught by cannabis tax
• Tax, customs duty
• I am attached to picket going to Revenue
• Troublemaker so upset with time leading to compulsory tax
• Tax, duty
• Customs tax
• Tax - optimist gets rid of it?
• Customs duty, e.g