What Is Yield in Finance? Meaning and Formulas

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Yield is the income an investment produces over a period, usually one year, expressed as a percentage of the investment’s price, cost or face value. The income can be bond interest, stock dividends or fund distributions. A 5% yield means $5 of annual income for every $100 invested.

Yield measures income only. It excludes any gain or loss from a change in the asset’s price, which is the main difference between yield and total return.

How Yield Works

Every yield figure has the same structure: a stream of income on top and a measure of value underneath.

Yield = Annual income ÷ Price (or value)

What changes from one type of yield to another is which income is counted and which denominator is used. The three common denominators are:

• Purchase price (cost): what you actually paid, giving your personal yield on the money you committed.
• Current market price: what the asset trades for today, giving the yield a new buyer would get. This is the figure usually quoted.
• Face value (par): the amount a bond repays at maturity. Yield on face value is the coupon rate, which never changes for a fixed-rate bond.

Yield is normally stated on an annual basis even when payments arrive quarterly or monthly. If a stock pays $0.50 per quarter, the annual dividend used in the formula is $2.00.

Gross yield is calculated before taxes and expenses; net yield subtracts them. A fund earning 4% from its holdings with 0.5% in expenses nets about 3.5%, and your after-tax yield depends on how that income is taxed in your bracket.

Why yield and price move in opposite directions

Because price sits in the denominator, yield and price move inversely whenever the income stays fixed. Take a hypothetical bond paying $50 a year:

The bond pays the same $50 in each case; only the price changed. Dividend stocks work the same way: if a company keeps its dividend unchanged and its share price drops, its dividend yield rises.

Types of Yield

Stock yield

For stocks, two versions are widely used.

Dividend yield (current yield) compares the annual dividend with today’s share price:

Dividend yield = Annual dividends per share ÷ Current share price

Yield on cost (YOC) compares the dividend with the price you originally paid:

Yield on cost = Annual dividends per share ÷ Purchase price

Hypothetical example: you buy a share at $100. A year later it trades at $120 and has paid $2 in dividends.

• Yield on cost: $2 ÷ $100 = 2.0%
• Current dividend yield: $2 ÷ $120 = 1.67%

The share’s rise lowered its current yield, even though the payment did not change. Yield on cost tracks how much income your original investment now produces, especially if a company raises its dividend over many years. Current yield lets you compare one stock with another today.

Dividend yields are often quoted on a trailing basis (dividends paid over the past 12 months) or a forward basis (the current dividend rate projected over the next 12 months). The two differ when a company has just raised, cut or suspended its payout.

Analysts also use earnings yield, earnings per share divided by share price, which is the inverse of the price-to-earnings ratio. It describes profit relative to price, not cash paid to shareholders, so it is not an income figure.

Bond yield

Coupon yield (nominal yield) is the annual interest divided by face value:

Coupon yield = Annual coupon ÷ Face value

A $1,000 bond paying $50 a year has a 5% coupon yield. For a fixed-rate bond, this number is set when the bond is issued.

Current yield uses the market price instead:

Current yield = Annual coupon ÷ Current market price

Yield to maturity (YTM) is the annualized return you would earn if you bought the bond at today’s price, held it to maturity, received every payment on schedule and reinvested coupons at the same rate. Unlike current yield, YTM includes the gain when a bond bought below par is repaid at par, or the loss when one bought above par is repaid at par. It is the standard figure for comparing bonds with different coupons and maturities.

Yield to call (YTC) applies to callable bonds, which the issuer can redeem before maturity. It assumes the bond is called on its call date at the call price. Issuers tend to call bonds when interest rates have fallen and they can refinance more cheaply, which is when losing a high coupon hurts the investor most.

Yield to worst (YTW) is the lowest yield you could receive without the issuer defaulting, found by checking every scenario the bond’s terms allow, such as calls, prepayments or sinking fund redemptions, and taking the lowest result. For a callable bond trading above par, YTW is often the yield to call. It is a conservative figure for investors who need a minimum income level.

Some bonds have yields that change over their life:

• Floating-rate bonds pay interest tied to a benchmark plus a fixed spread. Hypothetical example: at benchmark plus 2%, the bond pays 3% when the benchmark is 1% and 4% when it rises to 2%.
• Inflation-linked bonds, such as U.S. Treasury Inflation-Protected Securities, adjust principal or payments in line with an index such as the Consumer Price Index, so the interest received changes as the index moves.

Tax-equivalent yield

Interest on many municipal bonds is exempt from federal income tax. To compare them with taxable bonds, investors use the tax-equivalent yield (TEY): the pretax yield a taxable bond would need to match the muni’s after-tax income.

TEY = Tax-free yield ÷ (1 − Marginal tax rate)

Hypothetical example: a municipal bond yields 3% and you are in a 24% federal bracket. TEY = 3% ÷ 0.76 = 3.95%. A taxable bond would need to yield more than about 3.95% to leave you with more income after federal tax. This example ignores state and local taxes, which can change the result, and the higher your bracket, the more a tax-free yield is worth.

Fund yields

Distribution yield divides a fund’s recent income distributions, usually annualized, by its share price or net asset value (NAV). Because NAV is recalculated every trading day, a fund’s yield shifts daily even when its distributions do not.

Because funds and issuers have some freedom in how they calculate and advertise yield, the U.S. Securities and Exchange Commission introduced a standardized measure, the SEC yield: income earned over a recent 30-day period, net of the fund’s expenses, annualized. When comparing bond funds or ETFs, it is the more like-for-like number, since distribution yield can be affected by one-off payouts or return of capital.

Yield vs. Related Measures

Yield vs. total return. Total return adds price change to income. In the stock example above (bought at $100, now $120, $2 dividend), yield on cost is $2 ÷ $100 = 2%, but total return is ($20 + $2) ÷ $100 = 22%. A low-yield stock can deliver a high total return, and a high-yield stock can lose money overall if its price falls by more than it pays.

Yield vs. ROI. Return on investment measures the full gain or loss relative to cost over whatever period you choose. Yield is a recurring income rate, normally annual.

Yield vs. CAGR. Compound annual growth rate smooths total growth over several years into one annual rate. It describes how value grew, while yield describes how much cash an asset pays.

Yield vs. interest rate. For a bond bought at par, the coupon rate and yield match. Once the bond trades above or below par, its current yield and YTM move away from the fixed coupon rate.

Yield vs. APY. Annual percentage yield, used for savings accounts and CDs, is the interest earned in a year including the effect of compounding. The deposit’s principal does not change in value, so the price effects described above do not apply.

Worked Example: One Bond, Three Yields

Hypothetical bond: $1,000 face value, 5% annual coupon ($50 a year), five years to maturity, currently priced at $950.

1. Coupon yield: $50 ÷ $1,000 = 5.00%
2. Current yield: $50 ÷ $950 = 5.26%
3. Approximate YTM: a common shortcut is

(Annual coupon + (Face value − Price) ÷ Years) ÷ ((Face value + Price) ÷ 2)

= ($50 + $50 ÷ 5) ÷ ($1,950 ÷ 2) = $60 ÷ $975 ≈ 6.15%

The YTM is highest because a buyer at $950 also gains $50 when the bond repays $1,000 at maturity, spread across five years. The shortcut is an approximation. The exact YTM is the discount rate that makes the present value of all future payments equal $950, which requires iteration or a calculator. YTM also assumes every coupon is reinvested at the same rate and the issuer pays in full.

How Investors Use Yield

• Comparing income. Yield puts assets of different prices on the same scale: a $40 stock paying $1.60 and a $200 stock paying $6 both yield 4%.
• Planning cash flow. Retirees and other income investors use yield to estimate portfolio cash: $500,000 yielding 4% would produce about $20,000 a year if those payments continue.
• Reading risk. Issuers with weaker credit must offer higher yields to attract buyers. The gap between a bond’s yield and a comparable Treasury yield, called the credit spread, is a market measure of that extra risk.
• Comparing with inflation. The real yield is roughly the nominal yield minus inflation. A bond yielding 4% when inflation runs at 3% gives about 1% in purchasing power.

Limitations of Yield

Past payments may not repeat. Trailing dividend yields use dividends already paid. A company can cut or suspend its dividend, and a floating-rate bond’s income falls when its benchmark falls.

A high yield can be a warning. Since yield rises when price falls, an unusually high dividend yield, such as 15%, often means the market has marked the stock down because it doubts the dividend can be sustained. This situation is often called a yield trap.

Definitions vary. “Yield” on one screen may be trailing dividend yield, and on another forward yield, distribution yield, SEC yield, current yield or YTM. Comparing two figures calculated differently can mislead you.

Gross yield excludes taxes and costs. Two investments with the same quoted yield can leave you with different income, which is why net yield, SEC yield and tax-equivalent yield exist.

It is a snapshot. Yield uses today’s price and recent or scheduled income. Both can change, so a yield is a reading at one moment, not a promised return, except for a fixed-rate bond held to maturity with no default.

FAQs

The Bottom Line

Yield matters most to income investors, retirees and anyone comparing bonds, dividend stocks or funds. It works best as a like-for-like income measure when you know which version is quoted and whether taxes and costs are included. Because yield is a snapshot that ignores price changes, an unusually high figure can signal risk, so check total return and the sustainability of the payments as well.