Which of the following is NOT an aspect of a credit card?

The correct answer is that tax rate explanations are not an aspect of a credit card. When evaluating the features of credit cards, it is important to understand what attributes and conditions typically apply to them.

Teaser rates refer to promotional low-interest rates offered for an initial period to attract new customers, and they are common in credit card offers. Variable interest rates can fluctuate based on market conditions or the cardholder's creditworthiness, which is also a typical characteristic of credit cards. Liability for stolen cards pertains to consumer protections that reduce a cardholder’s responsibility for unauthorized transactions, further underscoring a credit card's features and risk management elements.

Conversely, tax rate explanations are generally unrelated to credit card functionality. Tax matters typically pertain to income, property, or sales taxes and are managed through different financial or tax services, rather than through the features or terms associated with credit cards. Thus, this choice clearly distinguishes itself from typical credit card aspects.