NR4

The NR4 is a return that the issuer needs to file annually with the CRA detailing the amount of foreign taxes withheld on distributions to foreign investors.

contains the following columns by investor:

SIN
CDN Interest
Actual CDN Dividend
Foreign Income
Other Income
Non-Eligible Dividends
FRN TAX Paid
Gross Income
Withheld Tax

totals for each column

also known as T4061

From:
http://www.cra-arc.gc.ca/E/pub/tg/t4061/README.html
http://www.cra-arc.gc.ca/E/pub/tg/t4061/t4061-e.html

You have to remit your non-resident tax deductions so that we receive them on or before the 15th day of the month following the month the amount was paid or credited to the non-resident.

Each slip is an information return, and the penalty we assess is based on the number of information returns filed in an incorrect way. The penalty is calculated per type of information return. For example, if you file 51 NR4 slips and 51 T4 slips on paper, we would assess two penalties of $250, one for each type of information return.