Illustrative dated CD contracts in USD. Retained interest follows effective APY growth over months/12. Payout scenarios use APY-equivalent period growth with no return on paid-out cash; they are not a bank payout quote. Displayed compounding frequency changes equivalent nominal APR only. Tax is modeled on gross interest at each payment. Actual bank day counts, rounding, tax timing, callable/brokered features and eligibility are excluded.

CD vs. HYSA vs. T-Bills

The comparison uses the entered constant rates, the selected payment convention and the same simplified interest-tax model. Common-horizon totals hold earlier receipts at 0%. Actual product risk, withdrawal access and product-specific tax treatment are not modeled; no product is recommended solely from the numerical difference.

Retained interest is taxed once at modeled maturity; paid-out interest is taxed at each modeled payment. Tax is calculated on gross interest before any exit fee. The gross-interest fee cap does not guarantee after-tax receipts at least equal to the initial deposit. Penalty tax deductions or refunds and IRA withdrawal tax are not modeled.

The CD Ladder Strategy

A set of independently entered CD contracts with different payment and maturity dates. Splitting creates example allocations, not a predicted yield curve. Earlier receipts are cash held at 0% until an explicitly modeled renewal.

Each entered rung can have a different quote and penalty. The optional second cohort starts at the final initial maturity after earlier receipts were held as cash. Its deposit is explicitly rounded to cents; later receipts do not share the first cohort’s investment duration.

When CDs Make Sense

Contract terms determine the fee. This illustration uses either P × [(1 + APY/100)^(m/12) − 1], where m is penalty months or entered nominal penalty APR × entered days/365 × principal. Unless permitted to exceed it, the fee is capped at gross interest in the final payment. There is no fee at contractual maturity. Modeled tax is based on gross interest before the fee, so after-tax receipts may fall below the original deposit even with the cap. Penalty tax deductions or refunds are not modeled.

FDIC coverage generally aggregates deposits per depositor, per insured bank and per ownership category. Include other deposits and accrued interest. The principal reference bar does not establish coverage.