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Accretion of Discount

Accretion of Discount

What Is Accretion of Discount?

Accretion of discount is the increase in the value of a discounted instrument over the long haul and the maturity date lingers nearer. The value of the instrument will accumulate (develop) at the interest rate implied by the discounted issuance price, the value at maturity, and the term to maturity.

How Accretion of Discount Works

A bond can be purchased at par, at a premium, or at a discount. No matter what the purchase price of the bond, be that as it may, all bonds mature at par value. The par value is the amount of money that a bond investor will be repaid at maturity. A bond that is purchased at a premium has a value better than expected. As the bond draws nearer to maturity, the value of the bond declines until it is at par on the maturity date. The diminishing in value over the long haul is alluded to as the amortization of premium.

A bond that is issued at a discount has a value that is not exactly the par value. As the bond moves toward its redemption date, it will increase in value until it combines with the par value at maturity. This increase in value after some time is alluded to as an accretion of discount. For instance, a three-year bond with a face value of $1,000 is issued at $975. Among issuance and maturity, the value of the bond will increase until it arrives at its full par value of $1,000, which is the amount that will be paid to the bondholder at maturity.

Special Considerations

Accretion can be represented utilizing a straight-line method, by which the increase is equitably spread all through the term. Utilizing this method of portfolio accounting, accretion of discount can be supposed to be a straight-line accumulation of capital gains on a discount bond in anticipation of receipt of par at maturity.

Accretion can likewise be represented utilizing a constant yield, by which the increase is nearest to maturity. The steady yield method is the method required by the Internal Revenue Service (IRS) for computing the adjusted cost basis from the purchase amount to the expected redemption amount. This method spreads out the gain over the excess life of the bond, rather than perceiving the gain in the year of the bond's redemption.

Ascertaining Accretion

To ascertain the amount of accretion, utilize the formula:

Accretion Amount = Purchase Basis x (YTM/Accrual periods each year) - Coupon Interest

The first step in the steady yield method is determining the yield to maturity (YTM) which is the yield that will be earned on a bond held until it matures. The yield to maturity relies heavily on how habitually the yield is compounded. The IRS permits the taxpayer some flexibility in determining which accrual period to use for computing yield. For instance, a bond with a $100 par value and a coupon rate of 2% is issued for $75 with a 10-year maturity date. How about we expect it is compounded yearly for simplicity. The YTM can, in this way, be calculated as:

  • $100 par value = $75 x (1 + r)10
  • $100/$75 = (1 + r)10
  • 1.3333 = (1 + r)10
  • r = 2.92%

Coupon interest on the bond is 2% x $100 par value = $2. In this manner,

  • Accretionperiod1 = ($75 x 2.92%) - Coupon interest
  • Accretion period1 = $2.19 - $2
  • Accretionperiod1 = $0.19

The purchase price of $75 addresses the bond's basis at issuance. Notwithstanding, in subsequent periods, the basis turns into the purchase price plus accrued interest. For instance, after year 2, the accrual can be calculated as:

  • Accretionperiod2 = [($75 + $0.19) x 2.92%] - $2
  • Accretionperiod2 = $0.20

Utilizing this model, one can see that a discount bond has a positive accrual; all in all, the basis accumulates, expanding more than time from $0.19, $0.20, etc. Periods 3 to 10 can be calculated likewise, utilizing the former period's accrual to compute the current period's basis.


  • While a bond can be bought at par, at a premium, or at a discount, its value is at par at the hour of maturity.
  • A bond purchased at a discount will gradually increase in value until it arrives at par value at maturity; this cycle is the accretion of discount.
  • It's an accounting cycle used to change the value of a financial instrument that has been bought at a discounted rate.
  • The accretion of discount is a reference to the increase in the value of a discounted security as its date of maturity shut in.