what is crs tax form T3 for? and why it comes out end of march why not early A T3 tax form (Statement of Trust Income Allocations and Designations) is used in Canada to report income you earned as a beneficiary of a trust. This most commonly applies to: Canada.ca +1 Mutual funds and ETFs held in non-registered (taxable) accounts. Estate income from a deceased person's estate. Income trusts , such as Real Estate Investment Trusts (REITs). Lott & Company +2 Why it comes out in late March While standard slips like T4s or T5s are usually issued by the end of February, T3 slips are typically not available until the end of March due to the following reasons: Legal Deadline : The Canada Revenue Agency (CRA) gives trusts 90 days after their tax year-end to issue these slips. For most trusts ending on December 31, this makes the deadline March 31. The "Trickle Down" Effect : Trusts (like mutual funds...