What is the customary APR on purchases after the initial 12 months?

What is the customary APR on purchases after the initial 12 months? The customary APR after the first twelve months typically increases. Credit card companies normally do a first year APR discount and after that set time, it rises. It is good to have your credit card paid off or as low as possible when that happens because sometimes they will charge the interest on the full amount started the 12 months prior.