How to Calculate Daily Do You Calculate Simple Interest on a Loan? | Credit KarmaHow Daily Simple Interest Works - OneMain FinancialHow Daily Simple Interest Works - OneMain Financial01/06/2020 · Noun On a daily simple interest loan, a borrower agrees to principal (the money originally borrowed) plus interest (the amount a lender charges to borrow) as it accrues from payment to payment. Interest accrues each day on the current unpaid principal ;· Policy Loan: $10,000; Loan Interest Rate: 5% [$500 over 365 days; divide $500 by 365 days = $, so after 365 days, our loan interest has accrued to $500] Total Loan Balance: $10,500, If the loan interest is not paid, the policy will borrow $500 to cover the loan interest ;· The interest of a payday loan works in a unique way — it’s expressed as a flat fee, which is usually limited to between $10 and $30 for every $100 borrowed. So, if you take out a $300 payday loan, the fees that are deducted may be between $35 and $ ;· How a simple interest loan works. With a simple interest loan, interest is calculated based on your outstanding loan balance on your payment due date. With installment loans, you’ll generally have a fixed repayment term. When you make a payment, some of it goes toward the interest charges, while the rest is applied to the loan principal. At first, more of your monthly payment will typically go toward the ;· 1. First we calculate the daily interest rate by dividing the annual student loan interest rate by the number of days in the = , or 2. Then we calculate the amount of interest a loan accrues per day by multiplying the remaining loan balance by the daily interest rate. $20,000 x = $ 3.