What Is Accretion?

Accretion refers to the gradual and incremental growth of assets and earnings growth to business expansion, a company's internal growth, or mergers and acquisitions. 

In finance, accretion is also the accumulation of capital gains an investor expects to receive after purchasing a bond at a discount and holding until maturity. The most well-known applications of financial accretion include zero-coupon bonds or cumulative preferred stock.

[Important: The accreted value of a security may not have any relationship to its market value.]

Understanding Accretion

In corporate finance, accretion is the creation of value by organic growth, or after a transaction has taken place. This can be due to new assets being acquired at a discount or below their perceived current market value. It can also include the acquisition of assets anticipated to grow in value due to the transaction occurring.

In securities markets, purchasing bonds below their face or par value is considered buying at a discount, whereas purchasing above the face value is known as buying at a premium. In finance, accretion adjusts the cost basis from the purchase amount (discount) to the anticipated redemption amount at maturity. For example, if a bond is purchased for an amount totaling 80% of the face amount, the accretion is 20%.

Factoring in Bond Accounting

As interest rates increase, the value of existing bonds declines in value, which means that bonds trading in the market decline in price to reflect the interest rate increase. Since all bonds mature at the face amount, the investor recognizes a gain on a bond purchased at a discount, and that gain is recognized using accretion.

Bond Accretion (Finance)

The rate of accretion is determined by dividing the discount by the number of years in the term. In the case of zero coupon bonds, the interest acquired is not compounding. While the value of the bond increases based on the agreed-upon interest rate, it must be held for the agreed-upon term before it can be cashed out. Assume that an investor purchased a $1,000 bond for $860 and the bond matures in 10 years. Between the bond's purchase and maturity dates, the investor needs to recognize a capital gain of $140. When the bond is purchased, the $140 is posted to a discount on the bond account. Over the next 10 years, a portion of the $140 is reclassified into the bond income account each year, and the entire $140 is posted to income by the maturity date.

Earnings Accretion (Accounting)

The earnings-per-share (EPS) ratio is defined as earnings available to common shareholders divided by average common shares outstanding, and accretion refers to an increase in a firm’s EPS due to an acquisition.

Key Takeaways

  • Accretion refers to the gradual and incremental growth of assets and earnings growth to business expansion, a company's internal growth, or mergers and acquisitions. 
  • In finance, accretion is also the accumulation of capital gains an investor expects to receive after purchasing a bond at a discount and holding until maturity.
  • The rate of accretion is determined by dividing a bond's discount by the number of years in its term to maturity.

Examples of Accretion

Assume, for example, that a firm generates $2,000,000 in available earnings for common shareholders and that 1,000,000 shares are outstanding; the EPS ratio is $2. The company issues 200,000 shares to purchase a company that generates $600,000 in earnings for common shareholders. The new EPS for the combined companies is computed by dividing its $2,600,000 earnings by 1,200,000 outstanding shares, or $2.17. Investment professionals refer to the additional earnings as accretion due to the purchase.

As another example, if a person purchases a bond with a value of $1,000 for the discounted price of $750 with the understanding it will be held for 10 years, the deal is considered accretive. The bond pays out the initial investment plus interest. Depending on the type of bond purchase, interest may be paid out at regular intervals, such as annually, or in a lump sum upon maturity. If the bond purchase is a zero coupon bond, there is no interest accrual.

Instead, it is purchased at a discount, such as the initial $750 investment for a bond with a face value of $1,000. The bond pays the original face value, also known as the accreted value, of $1,000 in a lump sum upon maturity.

A primary example within corporate finance is present during the acquisition of one company by another. First, assume the earnings per share of Corporation X is listed as $100 and earnings per share of Corporation Y is listed as $50. When Corporation X acquires Corporation Y, Corporations X’s earnings per share increase to $150. This deal is 50% accretive due to the increase in value.

However, sometimes, long-term debt instruments, like car loans become short-term instruments when the obligation is expected to be fully repaid within one year. If a person takes out a five-year car loan, after the fourth year, the debt becomes a short-term instrument.

[Fast Fact: The accretion of a discount is the increase in the value of a discounted instrument as time passes and the maturity date looms closer.]