Does Accrued Market Discount Increase or Decrease Gain?

Accrued market discount does not increase or decrease the total gain on your bond sale, but it does change how that gain is taxed. Federal law recharacterizes part of the gain, up to the amount of market discount that accrued while you held the bond, from capital gain into ordinary income.¹ The dollar amount of your gain is the same either way. The tax on it usually goes up, because ordinary income is taxed at your marginal rate instead of the 15% or 20% long-term capital gains rate that would otherwise apply.²

What Market Discount Is

Market discount is the gap between a bond’s face value and the lower price you paid for it on the secondary market.³ It usually shows up when interest rates rose after the bond was issued, pushing its market price below par. It is distinct from original issue discount, which is baked in at issuance.

Small discounts are ignored. If the discount is less than one-quarter of one percent of face value multiplied by the number of complete years remaining to maturity, the tax code treats it as zero.³ On a $1,000 bond with 10 complete years to maturity, the threshold is $25. A $20 discount is de minimis and any gain is fully capital gain. A $30 discount is not, and the recharacterization rule kicks in.

How the Recharacterization Changes Your Tax, Not Your Gain

When you sell a market discount bond at a gain, the gain is ordinary income up to the accrued market discount, and any remainder is capital gain.¹ “Accrued” means the portion of the total market discount allocated to your holding period, not the entire discount.

Say you buy a bond for $9,000 and sell it later for $9,500. Your total gain is $500. If $300 of market discount accrued while you owned the bond, $300 of that gain is ordinary income and $200 is capital gain. The $500 does not change. What changes is the rate on the $300 slice. For a taxpayer in the 32% bracket paying 15% on long-term capital gains, that recharacterization adds about $51 in federal tax compared with treating the whole gain as capital gain.

So the honest answer to the question in the search bar: accrued market discount leaves your gain the same size and generally makes it more expensive.

When the Gain Is Small or Nonexistent

The recharacterization is capped by the actual gain. If your gain is less than the accrued market discount, only the gain amount becomes ordinary income; the excess accrued discount is not taxed. Sell the bond above for $9,100 and your entire $100 gain is ordinary income, but the remaining $200 of accrued discount simply disappears from the calculation.

Sell at a loss and there is nothing to recharacterize. The loss is a capital loss, and accrued market discount does not create phantom ordinary income on a losing sale.¹

One boundary worth flagging: on tax-exempt municipal bonds bought at a discount, the coupon interest stays exempt, but accrued market discount at sale is still ordinary income.⁴ A discounted muni is not fully tax-free.

How Much Discount Has Accrued

Because the ordinary income piece is capped by accrued market discount, the accrual method matters. Two are available, and you choose bond by bond.

Ratable Accrual

Ratable accrual is the default. Total market discount is spread evenly over each day from purchase to maturity, and you multiply the daily amount by the days you held the bond.¹ A $100 discount on a bond with five years to maturity accrues at $20 a year. After three years, $60 has accrued no matter what the bond’s price did in the meantime.

Constant Yield Method

The constant yield method uses the bond’s yield-to-maturity at purchase and compounds like OID, which means less discount accrues in the early years and more in the later ones.¹ If you plan to sell before maturity, especially in the first few years, this election shifts more of your eventual gain out of ordinary income and into capital gain. The election is irrevocable for that bond, and the math is not something most investors do by hand.

Skipping the Recharacterization With a Current Inclusion Election

You can also elect under Section 1278(b) to include market discount in income each year as it accrues, rather than waiting for sale. You report the annual accrual as ordinary interest income and add the same amount to the bond’s basis. By the time you sell, the ordinary income has already been picked up, so the remaining gain is entirely capital gain.⁵

This does not save tax on the discount itself; it just spreads it out and cleans up the character of the sale gain. The election applies to every market discount bond you acquire that year and every year after, and you cannot revoke it without IRS consent. It is made by attaching a statement to a timely filed return identifying the Section 1278(b) election and the accrual method. The most common reason to make it is to sidestep the Section 1277 rule that defers interest expense deductions on borrowing used to carry market discount bonds.⁶

Where the Split Shows Up on Your Return

Under the default rule, a single sale ends up on two forms. The accrued market discount portion goes on Schedule B (Form 1040), line 1, labeled “Accrued Market Discount.”⁴ The capital gain portion goes on Form 8949, with the accrued market discount entered as an adjustment in column (g) using the worksheet in the Form 8949 instructions, and flows to Schedule D.⁷

If you made the current inclusion election, each year’s accrual is reported on Schedule B as interest, and the eventual sale appears on Form 8949 as a straightforward capital transaction because your basis already reflects the discount you picked up along the way.⁵

Brokerage 1099-B reporting on market discount is uneven, particularly for bonds transferred between firms. Given the spread between ordinary rates and the 15% or 20% long-term capital gains rates, checking the accrued amount yourself before filing is time well spent.

1
Office of the Law Revision Counsel. 26 U.S. Code 1276 – Disposition Gain Representing Accrued Market Discount Treated as Ordinary Income
2
Internal Revenue Service. Topic No. 409 Capital Gains and Losses
3
Office of the Law Revision Counsel. 26 U.S. Code 1278 – Definitions and Special Rules
4
Internal Revenue Service. Instructions for Schedule B (Form 1040)
5
Internal Revenue Service. Publication 550, Investment Income and Expenses
6
Office of the Law Revision Counsel. 26 U.S. Code 1277 – Deferral of Interest Deduction Allocable to Accrued Market Discount
7
Internal Revenue Service. Instructions for Form 8949