Usurious Interest is a generic law with a secondary default of 17. Laws can change within a campaign, so the displayed reference is not a statement about every city save.
Early Access · current recordPatch context 0.4.5Checked
Inspect the current Usurious Interest setting in the city before relying on the reference default 17. Follow the linked legislator and affected actions to understand who can change the rule and where it applies. An office power, a law setting and evidence of a particular act are different records.
Official patch notes establish the shipped changes they name. Secondary figures remain attributed reference values until checked in the installed game.