Calculating daily interest is similar to figuring out monthly or weekly interest. The only difference is that the rate is divided by the number of days instead of the number of months. When your mortgage is calculated daily, instead of monthly, you pay a slightly different amount of interest on your monthly statements because the number of days in each month varies. If you make a principal payment in the middle of the month, it'll immediately change the dollar amount of your interest payment for the rest of the month.

## Check Your Remaining Principal

You can find this information on your mortgage statement. The principal balance is the amount you borrowed, less the amount you have paid back. You are charged interest only on the amount left on your loan.

## Find Your APR

Your annual percentage rate, or APR, is also listed on your statement.

## Divide the APR by 365

For example, if the interest rate is 8 percent, divide 8 by 365, which equals 0.022. This will give you the daily mortgage rate, since their are 365 days in a year.

## Convert to a Decimal

Divide the result by 100 to convert a decimal. For example, divide 0.022 by 100 to get 0.00022, the daily rate in decimal form.

## Calculate the Daily Interest

Multiply your principal balance by your daily rate in decimal form. Assuming a principal balance of $234,000, the daily interest on our sample loan is $234,000 times 0.00022, which equals $51.48. This is the amount of money you'll pay in interest each day while your principal is at its current balance. It'll change to a lower number the next time you make a principal payment.

## Calculate the Monthly Interest

Multiply the daily interest by the number of days in your payment period to calculate the interest that will be charged for the month. If it's February, then the interest cost of the sample loan is 28 times $51.48, which equals $1,428. You may get a more accurate result by using an online calculator, as decimals won't be dropped or rounded as they usually are when calculating manually.

### Items you will need

- Mortgage statement

#### Tip

- You may get a more accurate result by using an online calculator, as decimals won't be dropped or rounded as they usually are when calculating manually.

#### References

**MORE MUST-CLICKS:**

- How to Figure Interest Rates on Mortgages
- How Is Interest Calculated for a Mortgage?
- How to Calculate Mortgage Interest Using an Amortization Table
- How to Calculate the Monthly Interest on a Mortgage
- How Do I Calculate Effective Interest Rate?
- How to Calculate Loan Repricing on Variable Rate Loans
- How Is Credit Card Interest Compounded?
- How to Calculate 5-Year Arm Mortgages