Canada Post wants to hike domestic postage rates next year to 90 cents, blaming a steep slide in letter volumes. The crown corporation is formally posting a notice this week that it will raise the price of domestic stamps from 85 cents to 90 cents on Jan. 11, 2016. Stamps to the United States would increase from $1.20 to $1.25, and stamps for other countries would go from $2.50 to $2.60. “We need to do everything we can to secure the future of the business,” said Canada Post spokesman Jon Hamilton.