Per annum is a Latin term used to indicate an annual rate of occurrence or payment. It is a common term found in finance, investments, and business. The phrase tells us the frequency or time frame for something that happens yearly. Some synonyms for per annum include 'annually', 'yearly', 'each year', 'every year', 'per year', and 'on a yearly basis'. All of these synonyms convey the same meaning. For instance, if someone is receiving a salary of $50,000 per annum, it means they are being paid $50,000 every year. Knowing the synonyms of 'per annum' will enable us to understand financial contracts and investments without any difficulty.