Blended Rate Calculator

A blended rate is calculated as a weighted average, where each component rate is multiplied by its respective principal amount (or weight). These products are then summed together and divided by the total sum of all principal amounts. The mathematical expression is: Blended Rate = (P0*R0 + P1*R1 + ... + P9*R9) / (P0 + P1 + ... + P9), where P represents the principal or weight and R represents the corresponding rate.

Imagine you have two separate business loans that you want to evaluate together. Loan A has a principal (P0) of $200,000 at a rate (R0) of 5.0%. Loan B has a principal (P1) of $300,000 at a rate (R1) of 7.5%. First, multiply each principal by its rate: $200,000 * 0.05 = $10,000, and $300,000 * 0.075 = $22,500. Next, sum these products to get $32,500. Then, divide by the total principal of $500,000 ($200,000 + $300,000). The resulting blended rate is $32,500 / $500,000, which equals 0.065 or 6.5%.

To ensure maximum accuracy, always verify that your principal weights and interest rates are expressed in consistent timeframes (e.g., annual percentage rates). Avoid mixing monthly figures with annual figures unless normalized. Additionally, make sure to include all active debt tranches or revenue tiers to get a true representation of your overall financial exposure.