Well, I can partially answer your question for you or at least give you somewhat of an idea. I may be a bit off base in certain areas though so grain of salt applies here.
Okay, you have 18,600 left for the 2000 tax year. I'm just wondering if you can carry forward your education money to this year or whether it's all over for the 1999 year. Probably under "unclaimed tuition" I'm not sure about that. But if you say that you can use the 18,600 for this year then i'll take your word for it.
What you've calculated at 21.7 percent reflects a blended tax rate. From what I remember about taxes, any monies made under approx the poverty line of 12,000 (I think) is taxed at a very low rate, some 17 percent or something like that. Every dollar after that is taxed at around 27-29 percent depending on what province you live in. It varies. It ceilings out at around 30,000 or so. Then every dollar after that will be taxed at around 42 percent depending on what province.
BTW, GST refunds work on a sliding scale working out to 200 dollars or something like that once you hit the 30,000 dollar ceiling and quickly abates after that. Once you hit around 32,000 you really get nothin'.
You will be able to claim your tuition plus 200 bucks for each month of full time enrollment less any bursaries and such.
It is not a direct one to one tax return. Ie: if you make the same amount that you are claiming then you get all your taxes back. It is a formula. If you have ever done your taxes before then you will recognize the formula that they use. It is a blended combo of your defined taxable earnings minus your non-taxable deductions. Your education amount will be multiplied by a certain factor and that will be added on to any other non-taxable deductions like charity and such.
Anyways, without a form here to figure it out for you I would estimate that with a large amount like what you have I would take approximately 60-80% of the taxes you paid for the 2000 taxation year to be refunded to you. There may be a limit to the amount that you can claim for education as I remember something in the income tax form that limits possible abuse of this deduction and/or limiting your tax refund in general. If this is the case and you are limited then make sure that you transfer if possible the rest of the amount to your mother, whomever, because they are probably in a higher tax bracket than you are since you started working only this year.
Therefore, she will get more money back and you can get reimbursed from her ... or you can wish her an early happy birthday and send her on a trip or something like that.
As for my CA friends, I probably spoke before I thought since they all work for the same family firm and have just moved to New York for the year. Silly me. Hey, I don't think of these things of where people are until the last minute!
So, Skorb and geoff2k, i'm sorry I led you on. Skorb, you would probably be better figuring this out by walking into an accounting firm or maybe just calling H&R Block and trying to pry some answers out of them. Ie: how do they figure out Education amounts with regards to your personal situation. Our Federal website is probably a good place to go too. geoff2k, you would be better off just soliciting the same advice in the same areas or phoning up your local accounting firm or branch(es)
Good luck.