How much income tax and National Insurance has been paid by employees in the last five years?
That's the question on the lips on Ramsey MHK Lawrie Hooper, who'll raise the issue in the House of Keys tomorrow.
Mr Hooper wants to know how much income tax and NI has been paid by both self-employed and employed people in each of the last five years.
The sitting gets underway tomorrow morning at 10am.