An income tax investigation is an examination of a taxpayers tax books and records to see if there are grounds for bringing criminal tax charges under the Income Tax Act. CRA has a separate tax investigations division to which suspected tax evasion files are referred as a result of a normal tax audit or through third party tax evasion tips. The special tax investigator can issue a formal written demand and has wide powers of inquiry including the power to demand records and information from the taxpayer. To learn more you can call us at 416-367-4222 or write to us at [email protected].