Big companies deliberately failed to report a record 94.4 billion yen in income to evade taxes in the 12 months through June, up 12.9 percent from a year earlier, according to the National Tax Administration.

The total was boosted by a record 35.9 billion yen in hidden income involving transactions conducted outside Japan, the administration said.

Big firms are defined as being capitalized at a minimum of 100 million yen.