# Magic Formula Investing

Finance Formulas / July 17, 2018 / Rory Wise

To examine the relationship between interest rates and bond prices, imagine an investor buys a bond from ABC Corporation with a 4% coupon rate and a \$1,000 face value. Another investor waits a few weeks before buying a bond, and during that time, the issuer raises interest rates to 6%. At this point, the second investor can buy a \$1,000 bond from ABC Corporation and receive \$60 in interest per year.

### Total Interest Formula

#### Lifo Formula

##### Accumulated Depreciation Formula
###### Return Formula

The formula for debt-service coverage ratio requires net operating income and total debt service of the entity. Net operating income is a company's revenue minus its operating expenses, not including taxes and interest payments. It is often considered equivalent of earnings before interest and tax (EBIT). Some calculations include non-operating income in EBIT, however, which is never the case for net operating income. As a lender or investor comparing different companies' credit-worthiness – or a manager comparing different years' or quarters' – it is important to apply consistent criteria when calculating DSCR. As a borrower, it is important to realize that lenders may calculate DSCR in slightly different ways.

Bonds form a significant portion of the financial market and are a key source of capital for the corporate world. Therefore every corporate finance course in the MBA program will introduce students to bonds at varying depth. We have provided a quick outline of what a student will need to know to understand bonds and the pricing or valuation of bonds which is the primary focus in the initial corporate finance program.

Current assets are important to businesses because they can be used to fund day-to-day operations and pay ongoing expenses. Depending on the nature of the business, current assets can range from barrels of crude oil, to baked goods, to foreign currency. On a balance sheet, current assets will normally be displayed in order of liquidity, that is, the ease with which they can be turned into cash.

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