Entering Canada Pension Plan (CPP) -- Taxable Part of Distribution

Yes, your taxable amount would be the same as the gross income. The information below is from the link provided and based on your plan (CPP) you would be allowed the same treatment for US social security payments..

• Under income tax treaties with Canada and Germany, Social Security benefits paid by those countries to US residents are treated for US income tax purposes as if they were paid under the Social Security legislation of the United States. In other words, if you're a US resident, you'd enter your Canadian CPP and OAS benefits as though you'd received a Form SSA-1099 from the Social Security Administration.

The U.S.-Canada tax treaty also applies to the Québec Pension Plan (RRQ). Note that the agreement only addresses government-issued Social Security benefits, not money received from private Canadian pensions.

• How do I enter my Canada Pension Plan (CPP) or Old Age Security (OAS) benefits?

Interesting.  If I avoid entering my CPP income as if it were a Canadian Registered Pension Income, and treat it as if it were Social Security Income, I do get better tax treatment.

However, I fear a future problem would occur when I activate my U.S. Social Security.  I do not see an opportunity to declare a second revenue stream.  There is only one Box 5 field for net benefits.  This would mean that I would have to sum up two quantities from two different sources (CPP and SS).  

So, would adding both sources be acceptable to the IRS?

Roy...

Yes, adding these sources is acceptable to the IRS.

Excellent!! 

Thanks, DaveF1006.  I've read several of your replies regarding the Canada-US Tax Treaty questions.  I (we) appreciate your guidance.