A line of credit is different from a loan in that a loan is a fixed sum of money repaid over a fixed term (period of time), and a line of credit is a revolving account a creditor can borrow against, withdrawing funds up to the maximum amount of the line of credit, and paying-down the line of credit at any time, with the balance fluctuating over time. Thus, a line of credit is more similar to a credit card account, but is usually provided by a local bank based on the debtor’s personal or business relationship with the bank.

In Arizona, as in other states, a line of credit and a loan are distinct financial products. A loan is a lump sum of money that is borrowed and then repaid over a set period, often with interest, according to the terms of the loan agreement. In contrast, a line of credit is a flexible borrowing option where the borrower is approved for a maximum amount and can draw funds up to that limit as needed. The borrower can then repay the borrowed amount over time, often with the flexibility to borrow again up to the limit as the balance is paid down. This makes a line of credit similar to a credit card, where the available credit replenishes as payments are made. In Arizona, lines of credit are commonly offered by banks and other financial institutions, and the terms are based on the borrower's creditworthiness and relationship with the bank. The specific regulations governing lines of credit and loans in Arizona would be outlined in the state's statutes and the federal laws that apply to lending practices, such as the Truth in Lending Act (TILA) and regulations by the Consumer Financial Protection Bureau (CFPB).