Say you reported huge capital gains in 2010. Those taxable capital gains can be offset with realized capital losses. You can "carry-back" a current-year capital loss for up to three previous tax years.

Do you know if you can apply capital losses twice against the same tax year, in different years? I had losses in 2009 which I applied against my 2010 gains, but even after those losses were applied, I still had significant 2010 gains in which I paid tax on. Could I use losses from this year against those 2010 gains, even though I aready applied my 2009 losses to those gains? Or can I only apply these losses one time, in one year?

Cheers.