For which type of transaction is the APR variance maximum set at 1/4% (.25)?

The APR variance maximum of 1/4% (0.25) applies specifically to irregular transactions. Irregular transactions often refer to loans that have unique features or conditions, such as those that might not conform to standard lending guidelines or are involved in non-traditional scenarios. This variance is put in place because irregular transactions may involve more complex terms or cost structures, leading to potential discrepancies in how APR is calculated compared to more standard transactions.

In contrast, regular transactions, fixed-rate mortgages, and home equity lines of credit typically adhere to standard guidelines and coefficients for calculating APR. These types tend to have more predictable terms and costs, making it easier to assess and compare them without the added complexity that irregular transactions might introduce. Thus, the variance for these transactions is not as lenient as the variance designated for irregular transactions.