// multi-utility computation suite · offline · instant · precise
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│ [c] calcalyst_ │
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finance.business-accrued-interest Calculator
Calculates accrued interest on a business finance fixed income instrument from coupon rate, last payment date, and settlement date. Bond transactions settle with the buyer paying the seller accrued interest from the last coupon date — this appears as a separate line item on the trade confirmation.
Inputs
Principal
The amount borrowed before any interest is added. Reducing this with a larger down payment cuts both monthly payments and total interest over the loan life.
Rate
Yearly rate charged on the outstanding balance. Enter as a percentage (e.g. 6.5 for 6.5%). Even 0.5% difference on a large loan adds up to tens of thousands over 30 years.
Days
Reference formula or conversion factor shown for context.