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What Is Principal? In lending, principal is the amount of money you actually borrow. Suppose you buy a $300,000 house and make a $60,000 down payment. You borrow the remaining $240,000. That $240,000 is your original principal. But your mortgage payment doesn’t simply repay the $240,000. Part of your payment goes toward interest—the price you pay the lender for using their money—and part goes toward reducing the principal. That distinction matters.

Purchasing Power What your money can actually buy. You can have more dollars and still be able to afford less. That sounds strange, but it’s one of the most important financial concepts to understand. The number of dollars in your bank account matters—but what those dollars can buy matters even more. That’s where purchasing power comes in. The Definition of Purchasing Power Purchasing power is the amount of goods and services that a specific amount of money can buy.

What Is Inflation Risk? Inflation Risk is the possibility that rising prices will reduce the purchasing power of your money over time. In simple terms: Your money may grow—but not fast enough to keep up with the rising cost of living. Suppose you have $100,000 earning 2% annually while inflation averages 3%. On paper, you’re making money. In reality, you’re losing purchasing power. Your investment is growing at 2%, but the things you want to buy are becoming 3% more expe

What Is Reinvestment Risk? Reinvestment risk is the possibility that you'll have to reinvest money from an investment at a lower interest rate or rate of return than you were previously earning. In simple terms, your investment pays you interest, dividends, or principal, but when it's time to put that money back to work, attractive investment opportunities may no longer exist. The result? Your future earnings may be lower than you originally expected.

What Is Default Risk? Every time you lend someone money, there's one important question in the back of your mind: Will I get paid back? In the financial world, that question is known as default risk. Default risk is the possibility that a borrower will fail to make the required payments on a loan, bond, mortgage, or other debt obligation. In simple terms, it's the risk that someone who owes money won't pay it back according to the agreed terms.

What Is Unsystematic Risk? Have you ever heard someone say, "Don't put all your eggs in one basket"? That old saying perfectly describes today's financial term: Unsystematic Risk. Unsystematic risk is the risk that affects a single company, industry, or investment rather than the entire market. Unlike broader economic risks that impact nearly every investment, unsystematic risk is unique to a specific business or sector and can often be reduced or even eliminated through di

What Is Systematic Risk? Systematic risk is the risk that broad economic or market forces will negatively affect most or all investments. It’s sometimes called market risk or non-diversifiable risk because it impacts the overall financial system rather than one particular company. Common sources of systematic risk include...

What Is Liquidity Risk? Liquidity risk is the risk that you won’t be able to quickly convert an asset into cash without losing a significant amount of its value. In simple terms, you may have something worth a lot of money, but that doesn’t necessarily mean you can turn it into cash when you need it. Cash is highly liquid. You can use it immediately. A publicly traded stock is generally liquid because you can usually sell it quickly during market hours.

What Is Currency Risk? Currency risk (also called exchange rate risk) is the possibility that changes in the value of one country's currency relative to another will affect the value of an investment, business transaction, or purchase. Simply put, if you own assets or conduct business in another country's currency, fluctuations in exchange rates can either help or hurt your financial results.

What Is Market Risk? Have you ever checked your investment account and noticed it was worth less than it was yesterday, even though you didn't buy or sell anything? That's market risk in action. Market risk is the possibility that the value of an investment will decrease because of factors that affect the overall financial markets. These factors can include economic conditions, interest rates, inflation, geopolitical events, government policies, or investor sentiment...

What Is a Financial Ratio? A financial ratio is a calculation that compares two or more financial numbers to help measure the health, performance, or efficiency of a business or investment. Rather than looking at raw numbers alone, financial ratios provide context, making it easier to understand what those numbers actually mean. Think of financial ratios as the "vital signs" of a business...

A Simple Example of Cost-Benefit Analysis Imagine you're considering purchasing a new laptop for $1,500. At first glance, the cost seems high. But what if that laptop allows you to work faster, save several hours each week, earn additional income, and lasts for five years? Now compare the cost against the long-term benefits: - Cost: $1,500 purchase price - Benefits: Increased productivity, higher income potential, fewer repairs, and years of reliable performance.

What Is Breakeven Analysis? Breakeven analysis is the process of calculating the point where total revenue equals total costs. At this point, you've covered every expense—but you haven't made a profit yet. In other words: Revenue = Expenses = Breakeven Once you sell one more product, gain one more customer, or generate one more dollar beyond the breakeven point, you begin earning a profit. Think of breakeven as the financial starting line—not the finish line.

What Is Scenario Analysis? Scenario Analysis is the process of evaluating how different future events or assumptions could affect a financial decision or investment. Instead of assuming only one outcome, scenario analysis asks, "What happens if things go better than expected? What if they go worse?" Think of it as creating multiple "what-if" stories for the future...

Introduction When you're comparing multiple investment opportunities, one simple question rises to the top: Which investment gives me the most value for every dollar I invest? That's exactly what the Profitability Index (PI) helps answer. Rather than looking only at how much money an investment might generate, the Profitability Index measures how efficiently your investment dollars are expected to create value...

What Is the Payback Period? The Payback Period is the amount of time it takes for an investment to generate enough cash flow to recover the original amount of money invested. In plain English, it tells you how long your money is tied up before you earn your initial investment back. The basic idea looks like this: Payback Period = Initial Investment ÷ Annual Cash Flow

What Is Internal Rate of Return (IRR)? Internal Rate of Return (IRR) is the annual percentage rate of return an investment is expected to earn over its lifetime, taking into account the timing of all cash flowing into and out of the investment. Simply put, IRR helps answer one of the most important investing questions: "What annual return am I really earning on this investment?"

What Is Net Present Value (NPV)? Net Present Value (NPV) is a financial calculation that determines whether an investment is expected to make or lose money after accounting for the time value of money. In simple terms, it compares the value of future cash you'll receive to the amount of money you have to invest today. The idea is based on a simple truth: A dollar today is worth more than a dollar received years from now...

What Is Discounted Cash Flow (DCF)? If you've ever wondered how investors decide what a business is really worth, one of the most important tools they use is Discounted Cash Flow (DCF). Discounted Cash Flow (DCF) is a valuation method that estimates the value of an investment based on the amount of cash it is expected to generate in the future. Since a dollar received today is worth more than a dollar received years from now, DCF adjusts—or "discounts"—future cash flows bac

Definition of Valuation Valuation is the process of determining what an asset, business, investment, or property is worth. It isn't simply about what someone hopes to receive or is willing to pay—it's an estimate of fair value based on facts such as income, assets, market conditions, growth potential, and comparable sales. In the financial world, valuation is used every day. Investors value stocks before buying them. Banks value homes before approving mortgages...