Calculate Credit Card Interest Calculator

Credit Card Monthly Interest Calculator with Daily and Annual

Calculate your Average Daily Balance »

One day I was looking at my credit card monthly interest charges. Then I figured I should try calculating how much I would end up saving by transferring my balance from one credit card to another credit card with a different APR (Annual Percentage Rate) and taking into consideration the transfer fees I would have to pay. I needed to figure out whether it would be worthwhile for me to go through with the transfer. So, I found the formula to calculate credit card interest per month and decided to offer this tool to the rest of you who are in my situation.

Since I was at it, I figured I would calculate the credit card interest cost I pay per day, month, and year. This would give me a better sense of how much I’m spending on a daily basis and how it adds up if I don’t focus on paying off my credit card(s) soon.

I hope this calculator helps you out with your quest to figure out your finances! It definitely helped me.

Read a related article: How Credit Card Interest is Calculated

Read another related article: What Are The Benefits to Calculating Your Daily Interest Rate?

Just enter both your Balance and APR (%) numbers below and it will auto-calculate your daily, monthly, and annual interest rate.

Balance $
APR (%)  
Days in Month  
Days in Year  
Interest Per Day $
Interest Per Month $
Interest Per Year $