The Department of Infrastructure says it can't give out details of its theory test contract with the Island's college because it's commercially sensitive.
A Freedom of Information request asked how much the DOI paid to University College Isle of Man to host the driving tests.
But in its response, the department said releasing the amount could undermine its negotiations in future.
And, refusing the request, it said that could ultimately reduce competition and inflate future costs.
Peel ready for bonfire and fireworks later
Government: "UK never told us about child murderer"
Farm shop's newest worker needs your name suggestions
Bus Vannin gives update on staffing problems and routes affected today
Toilets vandalised for fourth time in a month
Poppy gets fur-ever home after sparking rescue operation in Douglas
Council gets eight complaints about James Brown in six months
More bus staffing problems this weekend