I entered Tax Withheld at Source from RRIF Withdrawals (2 financial institutions), and OAS. The total does not agree with Tax Withheld on the Turbo Tax Return Summary.

[TonyC11 · Accepted solution]

if you are doing pension splitting, your total amount of tax withheld could differ from the sum total of what is entered from slips. This is because tax on split pension is also moved from Pensioner to Transferee.