Tax paid on eligible pension incomeThe program automatically processes the tax you already paid on the eligible pension income on lines 1160 and 12900 of the federal return, in proportion to the elected split-pension amount.
For instance, supposing you have a T4A slip with an amount of $6,000 in Box 22 for federal tax withheld and the program's MaxBack calculator decides to split 50% of the pension income, it will automatically transfer any tax already paid on this income in the same proportion, in this case $3,000.
This result is included on line 43700 of both spouses' federal returns. The calculation can also be viewed in Step 5 of the federal T1032 form, available under the "Tax Return" tab
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Webpage: KPA375-20210830145126DE.htm