http://www.calgary.ca/cfod/finance/P...t-Changes.aspx
I got the same adjustment - our monthly payment went up about $20. Sounds like there was some rebate that had resulted in lower payments than usual for the past six months and those no longer apply for the next six. I don't really understand and being a new homeowner I don't know if this is normal or not but I assume it's not worth my time trying to fight it or worry too much about it.