Glossary of fiscal terms used in CanadaThere are 140 entries in this glossary.
|Social insurance number (SIN)||
number given to each contributor to the Canada Pension Plan, Quebec Pension Plan, and Employment Insurance Plan. It helps record the contributions and premiums paid into and the benefits paid out of the plans. Since these social insurance programs are connected to the tax system, the SIN is also used as an identifier for federal income tax purposes. Everyone who files an income tax and benefit return must provide a SIN.