Sony has reported a loss of $3.1 billion for the year to 31 March.
The net loss was largely due to writing off $US4.4 billion related to a tax credit.
The giant electronics group added that the stronger yen had also affected earnings during the year.
Sony's business was also affected by the earthquake in Japan in March.
The BBC reports this is the third successive year that Sony has reported a loss. However, it forecast that it would return to profit in the current financial year.
Sony said that it was seeking to improve its profitability by cutting costs. It has forecast a profit of 80 billion yen ($US976 million) for the current fiscal year.
The company has been hit by cyber attacks on its PlayStation Network and Sony Online Entertainment services, which led to the theft of personal data that included names, passwords and addresses of more than 100 million accounts.
The company has estimated the data breach will hit its operating profits by $US170 million in terms of insurance and damages costs.
