You are required to report contributions made in the first 60 days of a calendar year on the prior year's tax return. This is tax law, not TT. You will not find software that will allow otherwise, as CRA would not approve it for netfile. If you have contributions from Jan and Feb 2015 you will need to request an adjustment on the 2014 tax return to include those.
http://www.cra-arc.gc.ca/E/pbg/tf/5000-s7/5000-s7-15e.pdf
