For an RRSP contribution made before March 2, 2018,
report it in the tax return for the tax year in which you made the
contribution. You can make changes after you have filed your tax return through
the CRA or through ReFILE: https://turbotax.community.intuit.ca/replies/2647992
Here is how to enter RRSP contributions in
TurboTax: https://turbotax.community.intuit.ca/questions/1190212-how-do-i-enter-rrsp-contributions-in-turbotax
