Legal Definition of Per annum: By the year

As a business owner, it is crucial to have a clear understanding of legal terms that may impact your financial transactions. One such term is per annum, which translates to by the year in Latin. In the context of finance, per annum refers to the interest due each year on a loan or investment.

Examples of Per annum:

Let’s consider a practical example to illustrate the concept of per annum. Suppose you lend $10,000 to a friend at an annual interest rate of 5%. This means that your friend will owe you $500 in interest per annum, or $41.67 per month. The interest is calculated based on the principal amount and is payable annually.

Similarly, if you invest $50,000 in a fixed deposit with a bank that offers an annual interest rate of 3%, you can expect to earn $1,500 per annum in interest. This interest will be paid out to you annually, providing you with a steady income stream.

The Importance of Per annum:

Understanding the concept of per annum is essential for business owners as it allows you to accurately calculate and plan for interest payments or earnings. By knowing the per annum rate, you can determine the total interest you will pay or receive over the course of a year.

For lenders, per annum helps ensure that you receive the appropriate compensation for lending money. It allows you to assess the profitability of a loan and make informed decisions about interest rates. By specifying the interest due per annum, you protect your financial interests and maintain transparency in your agreements.

On the other hand, as an investor, per annum enables you to evaluate the potential returns on your investments. By considering the per annum interest rate, you can compare different investment opportunities and choose the one that aligns with your financial goals.


Per annum is a legal term that signifies interest due each year. It plays a crucial role in financial transactions, allowing business owners to accurately calculate interest payments or earnings. By understanding the concept of per annum, you can make informed decisions about lending or investing, ensuring the protection of your financial interests. So, whether you are a lender or an investor, it is essential to grasp the significance of per annum in order to navigate the financial landscape effectively.



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