In accounting, a bond is a long-term debt instrument that an issuer records as a liability on its balance sheet: the company or government entity borrows money from investors, promises to repay the face value at a fixed maturity date, and typically pays interest along the way. Most bonds are issued in $1,000 increments and pay interest semiannually, though the cash the issuer actually receives at issuance depends on how the bond’s stated rate compares to prevailing market rates.1FINRA. Bonds – Investment Products The accounting touches the balance sheet, the income statement, and the footnotes at the same time, which is why bond entries have more moving parts than most other liabilities.
The Three Fixed Terms of Every Bond
Three numbers, locked in at issuance, drive every entry that follows.
The face value (also called par value) is the principal the issuer owes at the end of the term, usually $1,000 per bond.1FINRA. Bonds – Investment Products The coupon rate is the fixed annual percentage of face value paid to bondholders. A $1,000 bond with a 4.5% coupon generates $45 a year, typically split into two $22.50 payments. The maturity date is the contractual deadline for returning the principal.
These three figures live in the bond indenture, the legal agreement between issuer and bondholders. The indenture also includes covenants that can affect the accounting later. If the issuer breaches a covenant and loses the right to defer repayment, long-term debt can be forced into current liabilities even though maturity is years away.
Where a Bond Sits on the Balance Sheet
Bonds are liabilities. Any portion due within the next twelve months is a current liability; the rest is long-term. A $10 million bond issue maturing in eight years, with a $500,000 sinking fund payment due next year, gets split: $500,000 current, $9.5 million long-term.
The reported figure is the bond’s carrying value, not necessarily its face value. Carrying value equals face value adjusted for any unamortized premium, discount, or issuance costs. That’s the number analysts read when they look at leverage.
GAAP also requires footnote disclosures beyond the single balance sheet line. The issuer must disclose the combined maturities and sinking fund payments for each of the next five years after the balance sheet date, so readers can see when cash will actually be needed.2Financial Accounting Standards Board (FASB). Proposed Accounting Standards Update – Debt (Topic 470)
Why Bonds Sell at a Premium or Discount
The price investors will pay depends on the gap between the coupon rate printed on the bond and the market interest rate at the time of sale. If the market offers 6% and the bond pays only 5%, nobody pays full price; the bond sells at a discount, and the issuer receives less cash than face value. If the coupon of 5% beats a 4% market rate, investors bid the price up above par and the bond sells at a premium.
The issuance entries capture that gap. For a discount, the company debits Cash for the amount actually received and credits Bonds Payable for face value, with the shortfall recorded in a Discount on Bonds Payable account. That account is a contra-liability, so it reduces the carrying value on the balance sheet. For a premium, the excess cash lands in a Premium on Bonds Payable account, which increases the carrying value above face. Either way, the balance sheet reflects the true economic amount borrowed rather than just the stated principal.
Amortizing the Premium or Discount
Interest expense on the income statement rarely equals the cash coupon payment when a premium or discount is involved. Amortization closes that gap, moving the carrying value toward face value so the two match by maturity.
GAAP requires the effective interest method. The straight-line method, which spreads the premium or discount evenly across every period, is permitted only when its results are not materially different from the effective interest method.2Financial Accounting Standards Board (FASB). Proposed Accounting Standards Update – Debt (Topic 470) In practice, effective interest is the default and straight-line is a shortcut for small or short-duration bonds where the difference is trivial.
How the Effective Interest Method Works
Each period, interest expense equals the bond’s current carrying value multiplied by the market rate at issuance. The difference between that expense and the actual cash coupon is the amortization amount for the period.
For a bond issued at a discount, interest expense exceeds the cash payment. The excess is added to the carrying value, which rises gradually toward face value. Each successive period’s expense is a little higher because it is calculated on a larger carrying value. For a bond issued at a premium, the pattern reverses: interest expense is lower than the cash payment, and the difference reduces the carrying value each period. By maturity, the carrying value equals face value regardless of which way the bond was originally priced.
Discount vs. Premium at a Glance
- Discount: interest expense recorded is greater than cash paid; carrying value rises each period.
- Premium: interest expense recorded is less than cash paid; carrying value falls each period.
- At par: interest expense equals cash paid; no amortization is needed.
Most bond accounting errors trace back to a bad amortization schedule at issuance. If the wrong rate or wrong starting carrying value is used, every subsequent period compounds the mistake.
Issuance Costs
Underwriting fees, legal fees, registration, and printing costs add up. Before 2016, companies often booked these as a deferred asset and amortized them separately. ASU 2015-03 changed that. Issuance costs are now presented as a direct deduction from the carrying amount of the debt, the same way a discount is handled, because they provide no future economic benefit and so do not meet the definition of an asset.3Financial Accounting Standards Board (FASB). Accounting Standards Update No. 2015-03 – Simplifying the Presentation of Debt Issuance Costs
A bond with a $1,000,000 face value, a $20,000 discount, and $15,000 in issuance costs starts life with a carrying value of $965,000. Both the discount and the issuance costs are amortized over the bond’s life using the effective interest method, raising the effective interest expense each period.
Zero-Coupon and Convertible Bonds
Zero-Coupon Bonds
A zero-coupon bond pays no periodic interest. It sells at a deep discount, and the entire return to the investor is the gap between the purchase price and the face value at maturity. The issuer still records interest expense every reporting period even though no cash goes out. The bond is recorded at its issue price, then interest accrues under the effective interest method and compounds into the carrying value. The whole discount is original issue discount (OID), and both the accounting and the tax rules require it to be recognized over the bond’s life rather than all at maturity.4Internal Revenue Service. Guide to Original Issue Discount (OID) Instruments
A three-year zero-coupon bond with a $20,000 face value issued at $17,800 (a 6% effective rate) generates $1,068 in interest expense in year one. That amount is added to the carrying value, which becomes $18,868. Year two’s expense is $1,132, and the compounding continues until the carrying value hits $20,000 at maturity.
Convertible Bonds
Convertible bonds let the holder swap the bond for a set number of the issuer’s shares instead of taking cash at maturity. Before ASU 2020-06, issuers often had to split the instrument into separate debt and equity components using models like the cash conversion or beneficial conversion feature approaches. ASU 2020-06 removed those. Most convertible bonds are now recorded as a single liability measured at amortized cost, unless features in the instrument require bifurcation under other guidance.5Financial Accounting Standards Board (FASB). FASB Issues Standard That Improves Accounting Guidance for Induced Conversions of Convertible Debt Instruments The conversion option is described in the footnotes rather than carved into equity on the balance sheet. The change reduced the interest expense convertible bond issuers report, since the old models allocated part of the proceeds to equity and produced a larger effective discount on the debt portion.
Retiring the Bond
At Maturity
When a bond reaches its maturity date, amortization has already brought the carrying value to exactly face value. The issuer pays the bondholders, debits Bonds Payable, and credits Cash. No gain or loss is recognized because the carrying value equals the payment, and every associated premium, discount, or issuance cost account has already been amortized to zero.
Early Extinguishment
Many bonds include a call provision that lets the issuer retire the debt before maturity, usually at a price above face value. The difference between what the issuer pays (the reacquisition price) and the bond’s carrying value at that moment produces a gain or loss. Paying $1,050,000 to retire bonds carried at $1,020,000 creates a $30,000 loss on extinguishment. If the carrying value exceeds the reacquisition price, the issuer records a gain.
Under current GAAP, gains and losses on debt extinguishment are recognized immediately in the period they occur and shown as a separate line item on the income statement, generally within nonoperating income or expense. They cannot be spread over future periods. Any remaining unamortized discount, premium, and issuance cost balances tied to the retired bonds come off the books at the same time.
The Bondholder’s Side, Briefly
Everything above is the issuer’s accounting. On the other side of the trade, the investor’s treatment depends on classification. A bond held to maturity is carried at amortized cost, with premiums and discounts amortized into interest income using the same effective interest method the issuer applies. Interim price swings are not recognized in earnings because the investor plans to collect the contractual cash flows rather than sell.
Bonds classified as available-for-sale are reported at fair value, with unrealized gains and losses running through other comprehensive income. Trading securities are also at fair value, but the unrealized gains and losses flow directly through net income. In every classification, bondholders must assess credit impairment under ASC 326-20, recording an allowance for credit losses when expected cash flows deteriorate, even if the bond has not defaulted.