Last year I claimed $4250.00 on my return for charitable donations. I did not see that this amount had doubled to $8500.00 when I net filed. I received a cheque for $3700.00.  Later I was asked to send in my receipts, because I had claimed the bigger amount. I only had receipts $4250.00 and ended up owing $1700.00. Now I have claimed for $6745.00 and once again this figure has doubled to $13490.00 and have been given a refund of $5454.81. Will I have to pay half of this refund back like I did last time.
quentin

Yes you will unless you have receipts for $13490.  You should re-check your entries for your charitable donations to determine why the amount is doubling year after year.  I have never encountered this situation during the many years I have used TurboTax and the many returns I have prepared using this software.

I have just run into this problem too, but not doubled - just 555 over what we entered. We've just been asked for receipts which is when I realized the amount claimed on the tax form is not the same as the numbers entered in the program. Is there a glitch in the program?? Never had this issue in other years we were asked for receipts. Quite miffed, not just about the money we now owe, but that it'll cause the cra to question the rest of our tax return.