(Interest may be part or the whole of the profit on an investment, but the two concepts are distinct from one another from an accounting perspective.) The rate of interest is equal to the interest amount paid or received over a particular period divided by the principal sum borrowed or lent. Compound interest means that interest is earned on prior interest in addition to the principal.
KPIs, or key performance indicators help organizations achieve organizational goals through the definition and measurement of progress. The key indicators are agreed upon by an organization and are indicators which can be measured that will reflect success factors. The KPIs selected must reflect the organization's goals, they must be key to its success, and they must be measurable. Key performance indicators usually are long-term considerations for an organization.
OPI. Operational performance indicators are similar to KPIs in that both refer to the vital metrics of an aspect of your business. But while a KPI looks at broad categories, an OPI measures a specific function or operation -- typically one at a bottleneck for your business.etting up systems for your business doesn't mean choosing among SLA, KPI and OPI for your metrics. A strong business plan will apply all three metrics at appropriate points. OPIs will measure the performance of key points of your operation, while KPIs will rate how well your business interacts with the market.