* Residency status: In-state tuition is significantly lower than out-of-state tuition.
* Program of study: Tuition rates can differ between undergraduate and graduate programs, and even between different majors within those programs.
* Credit hours: Tuition is typically calculated per credit hour. The more credits you take, the higher your tuition bill.
* Fees: Various fees are added to tuition, such as student activity fees, technology fees, and others.
Therefore, there's no single answer to "how much is tuition?". To find the most accurate estimate, you should visit the official NAU website's tuition and fees page. This page will usually have tuition calculators or detailed breakdowns of costs by program and residency status.