Not to be confused with creatinine. Creatine (/ËkriËÉtiËn/ or /ËkriËÉtÉªn/) is a nitrogenous organic acid that occurs naturally in vertebrates. Its main role is to facilitate recycling of adenosine triphosphate (ATP), the energy currency of the cell, primarily in muscle and brain tissue.
Case 1: You Filed a Previous Year (2014) Tax Return But Do Not Have Access to a Copy of the Return or the AGI. First from the IRS website or call the IRS at 866-704-7388. Here is what you will see on the IRS PIN request site: Note: the image above is for informational purposes and is not interactive.
Tax rates for previous years (1985 to 2017) To find income tax rates from previous years, see the General Income Tax and Benefit Package for that year. You can find the federal tax rates on Schedule 1. You will find the provincial or territorial tax rates on Form 428 for the respective province or territory (all except Quebec). To find the Quebec provincial tax rates, go to Income tax return, schedules and guide (Revenu QuÃ©bec Web site).