Manx Utilities chairman John Wannenburgh says nobody pays to receive a paper bill.
He faced a question for written reply from Rushen MHK Juan Watterson about the figures.
In his response, he said nobody pays extra for paper bills - but those who get electronic invoices get 50p off.
And customers choosing to pay by Direct Debit get a further £1 discount per bill.
Mountain Road to close because of gales
New amber warning issued for tonight's storm
Police appeal over theft of building materials
One of capital's oldest buildings may become housing
New NHS safety rule to be brought in on Island
Two city streets to shut for over six months
Revamp of airport terminal planned, says DOI
Four ferries now listed as cancelled today