Other key features of the results are:
o Record net savings of £619 million - up 52.8 per cent from last year.
o Other income up by 34.7 per cent to £16.7 million.
o Total assets of £7.2 billion - an increase of £764 million, representing growth of 11.9 per cent.
o Operating profit of £42.1 million - up 8.5 per cent on last year.
Martin Ritchley, chief executive of Coventry Building Society, said: "We are delighted to report another outstanding year for the Society. Once again, our results clearly demonstrate the benefits to members of our building society status, achieved principally because of the advantage we enjoy as a building society in not having to pay dividends to outside shareholders.
"This year, our interest margin has been deliberately narrowed still further, from 1.17 per cent to 1.08 per cent of average assets, which means that we have been able to offer even more competitive products and interest rates to our savers and borrowers."