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What Is the Difference Between Bond Equivalent Yield and Yield To Maturity?

tax equivalent yield calculator

There are a good deal of terms and concepts that one should understand when considering bond investing, two such important terms of note are Bond Equivalent Yield (BEY) and Yield to Maturity (YTM). While BEY is the rate of return, annualized, of a discounted bond. It is helpful when comparing bond interest from one to the other. YTM is a measure of the return on a bond investment, if you were to hold it until maturity. But when is it helpful to use these terms?

Bond Equivalent Yield (BEY)

Bond Equivalent Yield is the return an investor can expect to receive on a bond at its current market rate. This figure reflects the true interest rate of a bond, taking into account any changes in the prevailing market rates and/or economic conditions. The Bond Equivalent Yield formula is calculated by dividing the coupon payment by the bond’s purchase price. It is important to note that the Bond Equivalent Yield calculator only reflects current market conditions and does not consider future fluctuations in interest rates or economic conditions. For example, if an investor buys a five-year bond with a coupon rate of 5%, and the current market rate is 7%, they can expect to receive a return on their investment of 5% or a BEY of 5%.

Yield to Maturity (YTM)

Yield to Maturity is the return an investor can expect on a bond when it matures, considering the current market rate and any future fluctuations in economic conditions. YTM is calculated by discounting all future cash flows from the bond using a specified discount rate that reflects the current market rate and expected changes in interest rates or economic conditions over time.

For example, if an investor buys a five-year bond with a coupon rate of 5%, and the current market rate is 7%, their YTM would be higher than the BEY of 5%. This is because they consider any future fluctuations in interest rates or economic conditions that could increase the bond’s value over time. As such, a YTM of 8% means an investor can expect to receive a return on their investment of 8% when the bond matures.

Differences Between BEY and YTM

Differences between BEY and YTM

There are several key differences between Bond Equivalent Yield and Yield To Maturity. Here are some of the most important distinctions:

Market Conditions

Market conditions play a major role in the difference between Bond Equivalent Yield (BEY) and Yield To Maturity (YTM). BEY is calculated based on the current market rate, while YTM considers any future fluctuations in interest rates or economic conditions. This means that even if the coupon rate remains constant, investors can expect a higher return with a longer-term bond if the market conditions improve.

For example, an investor buys an eight-year bond with a coupon rate of 5%. At the time of purchase, the current market rate is 8%. The BEY for this bond would be 5% since this is the fixed return on their investment regardless of any changes in interest rates or economic conditions. However, if the market rate rises to 10% a few years later, the YTM on the bond would be higher than the BEY of 5%. This is because investors consider any future fluctuations in interest rates or economic conditions that could increase their return over time.


The risk associated with BEY and YTM is another key difference. With BEY, the investment return is known up-front at the time of purchase since it is based on the current market rate. This makes it a much safer option than YTM, which considers any future fluctuations in interest rates or economic conditions that could increase their return over time as you calculate Bond Equivalent Yield. However, this also means that investors could miss out on higher returns if the bond market performs better than expected.

For example, an investor buys a five-year bond with a coupon rate of 5%. At the time of purchase, the current market rate is 8%; therefore, BEY for this investment would be 5%. If interest rates increase over time and the bond’s YTM rises to 10%, the investor would miss out on this higher return since their BEY remains fixed at 5%. On the other hand, if interest rates decrease and the bond’s YTM falls to 4%, investors will still receive a return of 5% due to their BEY.

Tax Implications

The taxation of bond returns also differs between BEY and YTM. Generally, the interest income earned from a zero coupon bond with a fixed coupon rate will be taxed at the investor’s marginal tax rate for the year made. On the other hand, capital gains received due to fluctuations in market rates are typically taxed at lower rates than ordinary income.

When investing in YTM bonds, the interest income is taxed based on marginal tax rates, while capital gains are subject to lower taxes. This can make a big difference in overall after-tax returns for investors. On the other hand, BEY investments are taxed as ordinary income. This means that investors don’t benefit from any potential lower tax rates on capital gains, which could result in a higher overall tax bill than with YTM bonds.

Factors Influencing Bond Yields

yield to maturity

When it comes to the yield on a bond, many factors can influence them. These include the following:

Interest Rate Trends

Interest rate trends are one of the primary factors that determine bond yields. If interest rates rise, this generally causes bond prices to fall and profits to increase. This is because investors demand higher returns to put their money at risk when they buy bonds with fixed coupon payments. On the other hand, if the face value interest rates decline, this usually causes bond prices to rise and yields to fall. This is because investors are willing to accept lower coupon payments when the return on their investment is lower. Bond yields tend to move in the opposite direction of interest rate trends.

Credit Quality of the Issuer

The credit quality of the bond issuer is another factor that influences bond yields. A bond issued by a company or government with a higher credit rating will typically yield lower returns than one issued by an entity with a lower credit rating. Investors demand higher returns to compensate for additional risk when investing in commodities with lower credit ratings.

Maturity Date

A bond’s maturity date is also an important factor affecting its yield. Longer-term bonds typically have higher yields than shorter-term bonds since they are exposed to more market risk and time value of money over their life span. On the other hand, shorter-term bonds generally have lower yields than longer-term bonds since they are less exposed to market risk and the time value of money over their life span.

Market Demand

The demand for a particular bond in the marketplace is another factor that can influence its yield. If there is strong demand for a specific bond, its price will typically rise, and its yield will fall. On the other hand, if there is weak demand for a bond, its price will naturally decline, and its yield will increase.

Tax Effects

The tax effects of a bond can also influence its yield. Some bonds, such as municipal bonds, offer tax advantages to investors and may consequently have lower yields than other types of bonds that do not provide similar benefits. The relative attractiveness of a particular bond yield will always depend on the individual investor’s situation and ability to take advantage of the tax benefits associated with the bond.


Inflation can have an impact on bond yields as well. Since investors typically look for investments that provide returns that exceed the inflation rate, they may accept lower yields if they think that inflation will rise. The opposite is also true; higher inflation rates may cause investors to demand higher products from bonds to protect their returns.

Benefits Of Bonds

yield to maturity

In addition to their yield benefits, bonds offer investors several other advantages. Here are the primary benefits that bonds provide investors:

Predictable Investments

Bonds are a very predictable investment, making them especially attractive to investors who seek stability. The maturity date is known before purchase, as is the interest rate that will be paid until then. This reduces surprises and allows Bondholders to plan their future finances confidently. With bonds, there is less risk of market volatility affecting their investment. For instance, zero-coupon bonds are generally less volatile than stocks, as most companies have to pay interest regularly regardless of what is happening in the stock market.

Lower Risk

Bonds typically carry a lower risk for investors when compared to other types of investments, such as stocks or commodities, since the government or a company backs them. When companies issue bonds, they must make regular payments on the principal and interest until maturity, which assures investors that their investment will be safe. In addition, in case of default by the issuer, bondholders have priority over other creditors and can often recoup at least some of their original annual yield investment.


Bonds are also important for investors to diversify their portfolios and spread risk. By investing in bonds, investors can reduce the level of volatility in their portfolio and help balance out potential losses suffered from other investments. For instance, holding some bonds may protect against losses due to lower volatility if stocks fall during a market downturn.

Factors Influencing Yield To Maturity

Factors Influencing Yield to Maturity

Several factors can influence the yield to maturity. Here are some of the most important ones include:

Interest Rates

Interest rates are one of the largest influences on yield to maturity. When interest rates rise, bond prices typically fall, and yields go up. When interest rates fall, bond prices increase, and yields decrease. This inverse relationship occurs because investors want higher returns when paying more for a bond and vice versa. For example, if a 10-year bond yields 4%, and interest rates in the market increase to 5%, investors will need to receive more to consider purchasing the 10-year bond. Therefore, the bond issuer might have to raise the rate on that bond to 6%. This would cause the price of that bond to fall, and its yield to maturity (YTM) would then be 6%. In this way, YTM is heavily influenced by movements in the overall market interest rate.

Credit Risk

The credit risk of a bond issuer can also significantly influence annualized yield. A lower credit rating indicates higher risk, so investors will demand higher returns for investing in these bonds. For example, if an issuer has a credit rating of AA, then investors can expect to receive lower yields than if the issuer had an A or BBB rating. This is because investors perceive that the higher-rated bonds are more likely to pay back their principal and interest payments while the lower-rated bonds have higher default risk. Therefore, the YTM of a bond will increase as its credit rating deteriorates, and vice versa.


Callability is a feature of some bonds that can affect the yield to maturity. A callable bond allows the issuer to redeem it before its original maturity date at a pre-specified price. This means that investors have less certainty about how long their investment will last and demand higher yields for these bonds. On the other hand, non-callable bonds provide investors with greater confidence about their investment returns; therefore, these bonds tend to offer lower yields than callable bonds.

Time To Maturity

Time to maturity is another factor that can affect a bond’s YTM. Generally, longer-dated bonds will have higher yields than shorter-dated ones. This is because investors demand extra compensation for tying their money up for longer periods and also to offset the impact of inflation. At the same time, as bonds get closer to maturity, their YTM will also decrease due to the risk reduction associated with holding these securities until they mature.

Supply And Demand

The supply and demand of a particular bond can also impact its YTM. The higher the demand for a bond relative to the available supply, the lower its yield will be. Conversely, investors must offer higher yields to attract buyers if there is more supply than demand. Therefore, investors need to monitor the market dynamics when considering different free investment banking.

Interest Rate Changes

Changes in interest rates will also have an impact on a bond’s YTM. When the prevailing interest rate increases, the YTM of existing bonds will decrease and vice versa. This occurs because investors need to offer higher yields on securities with longer maturity dates to compensate for the increased risk associated with a changing interest rate environment.

Benefits of Yield To Maturity

Benefits of Yield to Maturity

Yield to maturity offers investors several advantages. These include the following:


Yield to maturity (YTM) allows investors to generate higher returns than most traditional investments. This is because YTM bonds provide higher yields and have the potential for capital appreciation due to changes in interest rates over time. As a result, investors can benefit from income and capital gains when investing in YTM bonds.

Risk Mitigation

Investing in YTM bonds is also a good way to mitigate risk, as there is relatively low default and credit risk associated with these securities. This means that investors can rest assured that their money is safe when investing in YTM bonds since they are typically backed by the issuer’s promise to pay back the principal amount at maturity.


YTM bonds are also highly liquid, so investors can quickly sell them in the secondary market and receive their money back. This makes YTM bonds an attractive option for investors who need to access their funds at short notice.

Tax Advantages

Investing in YTM bonds also offers investors some tax advantages. This is because the interest payments on these securities are exempt from federal taxation, which helps to keep more money in the investor’s pocket.


When investing in fixed-income securities, investors should consider the difference between Bond Equivalent Yield and Yield To Maturity. While Bond Equivalent Yield is useful for comparing investments, YTM offers investors higher returns, risk mitigation, liquidity, and tax advantages. Therefore, weighing both options before making an investment decision is important.

It’s also important to remember that there are other factors to consider when investing in fixed-income securities, such as credit risk, maturity date, and repayment terms. By researching the options available and understanding these key components, investors can decide which type of bond fits their needs best. Happy investing!

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