Canada Post and the US Postal Service raised their postage rates in January, and I’ve just got around to updating my handy Canada Post and USPS postage rate quick reference card on this blog. The Canada Post rate increases were effective January 16, 2012, and the USPS increases were effective January 22.
My Canada Post and USPS Postage Rates project page, http://jdlh.com/en/pr/postage_card.html, will have links to download the latest charts as I update them. The spreadsheet source file for the charts is also there. Both are licensed CC-BY-SA, so please feel free to re-use and modify them (as long as you attribute my work and share your product as freely).
Heads up: Canada Post has already received approval for first-class mail rate increases in 2013 and 2014. Both Canada Post and USPS offer “perpetual” or “forever” stamps, which are worth first-class basic domestic postage, whatever the price may increase to.