Banks and Interest Rates
How do the big banks calculate daily interest?
For an interest rate of x% annually, do they just divide that by the number of days in the year(365 in a normal year)?
Or do they divide that by the number of months in the year (12) and then by the number of days in the average month (30)?
The later give a marginally higher daily interest rate, so I would assume they use that one.
The reason I ask is that I’m trying to figure out how much I will owe in interest on my line of credit at the end of the month. It is supposedly calculated daily. I though I would just calculate the daily interest rate, multiply by the balance at the end of the day and they add all those up. I’m always off by a few cents. Rounding?
I know this is nitpicking, but I’d really like to know why I’m off.
Comments please….