difficult to give a good answer to thomas without having more info - but , as parados pointed out - part of the difference might be in the cost of gasoline .
while gasoline is still a little cheaper in the u.s. than in canada , the difference seems to have shrank .
there is also the increase in the value of the canadian $ against the u.s. $ . i'm not sure how that is reflected .
we have noticed that groceries are now often more expensive in the u.s than in canada - i'm comparing eastern ontario against northern n.y. state here .
and here is a really strange thing that's been going on for a while .
we've noticed that particularly at 'zellers' - a smaller and older walmart style store .
they'll have specials on paper goods - paper towels and toilet tissue - much below the usual price in canada and in the u.s.
when i checked the boxes , i noticed they were labelled :
product of the united states - NOT for sale in the u.s. ... or : for EXPORT only !
with the appreciation of the canadian $ , imported groceries and other goods from all over the world have also become less expensive in canada . (seems that canada's "tough love' , meaning higher taxes , less government expenditures and increased exports is finally beginning to help the canadian $ ; particularly considering that canada had almost become a financial basket case . the canadian $ was worth only about 60 cents u.s. not that long ago and is now trading around 90 cents u.s. ) .
i also noticed that airline fares in the u.s. jumped by 12.6 % in the last 7 months . fares have also gone up in canada , but imo canadians travel less frequent by air than canadians - that's just anecdotal by reading a2k entries .
i'm not sure if that really explains the difference between the CPI and core CPI for both countries .
the confusion over the CPI rate arises to some extent because on business news it is ususally the 'core cpi' rate that's quoted ; uninformed listeners would not know that that's the rate without food etc . and would often assume that it is the 'total' cpi rate - a term not used regularly by commentators , i believe .
let's all be happy now