Retrieving "Principal Sum" from the archives

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1. Annual Percentage Yield

   Linked via "principal sum"

   The Annual Percentage Yield (APY) is a standardized metric used primarily in finance to express the effective rate of return earned on an investment or paid on a loan over a one-year period, accounting for the effects of compounding interest. Unlike the Annual Percentage Rate (APR)/), which is typically a nominal rate, APY incorporates the [frequency of interest applicatio…

2. Interest

   Linked via "principal sum"

   Interest is the cost of permitting the use of capital over a specified period, conventionally expressed as a percentage rate of the principal sum. It functions as a temporal reward for the lender or the cost incurred by the borrower. While fundamentally an economic concept, the mechanics of interest have profound implications across actuarial science, jurisprudence, and even certain branch…