IRS Rules for CD Interest: 1099-INT, OID, and Accrual

The basic 1099-INT mechanics

Every January, the issuing bank sends Form 1099-INT for the prior calendar year. The relevant boxes:

• Box 1: Interest income. Goes on Schedule B (or Form 1040 line 2b if under the threshold for Schedule B).
• Box 2: Early withdrawal penalty. Deducted above the line on Schedule 1, line 18.
• Box 3: Interest on Treasury obligations (rare for bank CDs; applies if the CD is collateralized by Treasuries).
• Box 4: Federal income tax withheld (if you elected withholding or are subject to backup withholding).

You owe tax on box 1 in the year credited regardless of whether you withdrew the interest. This is constructive receipt: the bank made the interest available; you have economic ownership.

OID rules for long-term CDs

Original Issue Discount applies when a CD's stated interest is added to principal during the term rather than paid out annually. The IRS deems this as the buyer purchasing the CD at a discount to its eventual maturity value, with the discount amortized over the term.

For a multi-year compounding CD, the bank typically reports each year's accrued interest on Form 1099-OID rather than 1099-INT. You report the OID on Schedule B as interest income even though you have not received cash. This is the "phantom income" problem: you owe tax now on money you cannot access until maturity.

Practical note. Most modern bank CDs structure interest payments to avoid OID complications. If your CD pays interest annually (or more frequently) to an account or as a deposit to your bank account, OID typically does not apply. If your CD compounds internally and pays at maturity only, OID likely does apply.

Worked example: which year each CD’s interest is taxed

Same $100,000 at a 4.00% annual rate, four different structures. The rule from IRS Pub. 550: interest on a CD that matures in 1 year or less and pays in a single payment at maturity is taxed when paid. If you buy a CD with a maturity of more than 1 year, you include part of the total interest in income each year as original issue discount (OID), even if the bank pays nothing until maturity.

How the OID rows are figured. Each year’s OID is the balance at the start of the accrual period times the yield: $100,000 × 4% = $4,000, then $104,000 × 4% = $4,160, then $108,160 × 4% = $4,326.40. Total $12,486.40, all taxed before you see a dollar. When the CD starts mid-year, each period’s OID is split by days: for 2026, $4,000 × 184/365 = $2,016.44; for 2027, the other 181 days of year one ($1,983.56) plus 184 days of year two ($4,160 × 184/365 = $2,097.10). *Later years follow the same day-count split and depend on the bank’s accrual periods; use the bank’s 1099-OID.

Three rules that catch people. Banks must issue Form 1099-OID when a holder’s OID for the year is at least $10 (IRS Instructions for Forms 1099-INT and 1099-OID). If you cash a deferred-interest CD early for less than its value at maturity, you can deduct OID you already reported but did not receive, and the early withdrawal penalty is still deducted separately. And renewing a CD at maturity is treated as cashing it in and buying a new one, so each renewal starts a fresh term for these rules (Pub. 550).

The EWP deduction

When you break a CD early and pay the penalty, the bank reports it on 1099-INT box 2. You deduct it on Schedule 1, line 18 of Form 1040. This is an adjustment to gross income, not an itemized deduction, so it reduces AGI regardless of whether you itemize.

Why this matters. The above-the-line treatment is meaningfully better than itemized. The deduction lowers AGI, which can also reduce:

• Phase-out thresholds for various credits and deductions.
• The Social Security taxable amount calculation.
• IRMAA Medicare premium surcharge tiers.
• Net investment income tax (NIIT) thresholds.

For a $4,550 EWP in a 24 percent bracket, the after-tax cost is $4,550 × (1 − 0.24) = $3,458. The deduction effectively reduces the cost of breaking the CD.

Accrual mechanics: cash basis vs accrual basis

Almost all individual taxpayers are on the cash basis: interest is taxable when received or constructively available. For a CD paying annual interest, this means box 1 of 1099-INT each year.

For a CD that compounds internally and credits interest only at maturity, the bank's reporting depends on whether the interest is "constructively received" each year. Most banks report annually even on compounding CDs because the interest is technically available (you could withdraw it, even with EWP). If the bank does not report annually, OID rules typically apply.

IRA CD tax treatment

Inside a traditional IRA, CD interest accumulates tax-deferred. No 1099-INT is issued; the IRA custodian's annual statement shows accumulated interest but it is not currently taxable. Tax applies only on distribution, at ordinary income rates.

Inside a Roth IRA, CD interest accumulates tax-free. Qualified distributions (after age 59.5 and after the 5-year rule) are completely tax-free.

RMDs from traditional IRA CDs must be calculated and taken starting in the year you turn 73 (or 75 for those born in 1960 or later under SECURE 2.0). The CD does not need to mature to fund the RMD; you can withdraw the RMD amount and leave the rest in the CD without triggering EWP at most institutions.

Income in respect of decedent (IRD)

When a CD owner dies, the interest accrued through the date of death but not yet credited is IRD. It is reportable by whoever receives it (the beneficiary or estate) when paid, in the year paid.

Critical: there is no step-up in basis for IRD. Unlike most other inherited assets, IRD carries the original taxable character forward to the recipient. A beneficiary inheriting a CD with significant accrued unpaid interest will owe income tax on that interest when paid.

The estate or beneficiary may be entitled to a 691(c) deduction for the portion of estate tax attributable to the IRD, but this requires careful calculation and most CDs do not produce enough accrued interest to make this material at typical CD interest rates.

State income tax on CD interest

CD interest is taxable in the depositor's state of residence under that state's income tax rules. This contrasts with Treasury interest, which is exempt from state income tax.

The state-tax exemption on Treasuries is meaningful at high state tax rates. For a California resident in a 9.3 percent state bracket: a 5-year Treasury at 4.10 percent yields a state-tax-equivalent of 4.10 / (1-0.093) = 4.52 percent versus a bank CD at 4.55 percent. The state-tax exemption makes Treasuries roughly equivalent.

For residents of no-income-tax states (TX, FL, NV, WA, AK, SD, WY, TN, NH), this consideration is moot.

Estimated tax obligations

If your CD interest plus other untaxed income produces more than $1,000 of additional tax owed annually, the IRS may assess underpayment penalties unless you satisfy a safe harbor:

• Pay 100 percent of last year's total tax (110 percent if prior-year AGI exceeded $150K) via withholding or quarterly estimates.
• Or pay 90 percent of current year's total tax.

Many CD holders covered by W-2 or pension withholding satisfy the safe harbor automatically. If you are fully retired with substantial CD interest and no withholding source, set up quarterly estimates (Form 1040-ES) to avoid penalties.

NIIT (Net Investment Income Tax)

CD interest counts as investment income for the 3.8 percent NIIT. The tax applies to single filers with modified AGI above $200,000 and joint filers above $250,000.

For a high-bracket retiree with substantial CD interest, the effective marginal rate on the next dollar of CD interest can be 24% federal + 3.8% NIIT + state = 30+ percent. This is the same calculation for MYGA distributions, with the timing difference being that MYGA interest is deferrable.

Practical record-keeping

1. File every 1099-INT and 1099-OID in a tax folder by January 31.
2. Cross-check the totals against your bank statements monthly to catch errors before year-end.
3. If you receive a corrected 1099 (1099-INT-COR), file an amended return only if the change is material.
4. Keep records of EWP payments for the Schedule 1 deduction.
5. For IRA CDs, the custodian's annual statement is the recordkeeping document; no 1099 is issued for in-IRA activity.
6. For inherited CDs, keep the date-of-death valuation and a breakdown of pre-death vs post-death interest.

How MYGA taxation differs structurally

MYGAs (non-qualified, outside IRA):

• No 1099 issued during accumulation. Interest defers.
• Withdrawals follow LIFO accounting: interest (taxable as ordinary income) comes out first, principal returns tax-free.
• Withdrawals before age 59.5 incur a 10 percent federal additional tax on the taxable portion.
• At full surrender or annuitization, all accumulated interest is taxable in the year received.
• 1035 exchanges to a new MYGA defer the tax intact.

MYGAs inside an IRA: same as IRA CD, all distributions taxable as ordinary income, no LIFO complication.

The tax-deferral arbitrage. On $250K at 5.5 percent for 5 years in a 24 percent bracket:

• CD: $250K × 1.055⁵ − tax-drag from annual interest taxation. After-tax ending value: ~$311,400.
• MYGA: $250K × 1.055⁵, then ordinary income tax on the entire gain at surrender. After-tax ending value: ~$313,200.
• Difference: ~$1,800 of additional after-tax value from the deferral compounding.

The deferral edge grows with higher tax brackets, longer holding periods, and higher interest rates. For 7-year and 10-year MYGAs, the deferral advantage compounds substantially. See our CD vs MYGA ladder analysis.

Related guides

• Using CDs to fund IRA RMDs
• CD survivor options and IRD at death
• CD early withdrawal penalty math
• CD ladder vs MYGA ladder side-by-side

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Disclosure

This article reflects publicly available CD, savings, and annuity rate information approximate to the date above. Rates change frequently, often weekly. Always confirm current rates directly with the institution before opening, renewing, or transferring. This is general educational content, not a personalized recommendation, solicitation, or offer of any specific product. Hans Goldstein is an independent licensed insurance producer (NPN 20602398) appointed with multiple A-rated carriers in the fixed-annuity market; Goldstein & Co. LLC is not a bank, broker-dealer, or registered investment adviser. CDs are deposit products of FDIC-insured banks or NCUA-insured credit unions; annuities are insurance contracts backed by the issuing carrier and state guaranty associations. FDIC and NCUA insurance limits are typically $250,000 per depositor per institution per ownership category. Tax discussion reflects federal law as of 2026 and is subject to change; consult a tax professional for your situation.