A $100,000 CD is the deposit size where two things change. First, many banks (not all) offer a "jumbo" CD tier starting at $100,000 with a slightly higher APY than the standard tier — the gap is typically 10–25 basis points, but it varies by bank and by term. Second, you're now using 40% of the FDIC's $250,000 per-bank coverage limit, so the next $100,000 CD at the same bank starts mattering for coverage planning.
At today's rates, a $100,000 CD at 4.50% APY earns $4,500 in the first year and just over $24,600 in interest over a 5-year term. That's a meaningful annual income stream — enough that planning around the tax treatment matters (CD interest is ordinary federal income, taxable as it accrues each year). Common uses at this deposit size include retirement-side savings inside an IRA (which defers the tax), inheritance parked while you decide on a long-term plan, business reserve accounts, or one rung of a larger CD ladder.
$100,000 CD: Frequently Asked Questions
How much does a $100,000 CD earn in 1 year?
At 4.50% APY, a $100,000 CD earns $4,500 in the first year (maturity value $104,500). At 5.00% APY, it earns $5,000. If your bank offers a jumbo tier (typically starting at $100,000) with a 4.75% APY versus a 4.50% standard, the jumbo earns $4,750 — an extra $250 for the same term. Always compare the actual jumbo APY to the standard APY before assuming the bigger deposit is worth it.
How much does a $100,000 CD earn in 5 years?
At 4.50% APY, a $100,000 CD earns about $24,618.20 over 5 years (maturity value $124,618.20). At 5.00% APY, it earns about $27,628.16. At a 4.75% jumbo APY, it earns about $26,109 — splitting the difference between the two standard rates. The compounding effect on a 5-year hold is why the 5-year return is 5.5× the 1-year return at 4.50%, not just 5×.
What is a jumbo CD?
A jumbo CD is a certificate of deposit with a higher minimum deposit — typically $100,000 — in exchange for a slightly higher APY. The rate premium has historically been 10–50 basis points, but it has narrowed in recent years as online banks have pushed standard-tier rates higher. Jumbo CDs are otherwise identical to standard CDs: same FDIC coverage rules ($250,000 per depositor, per insured bank, per ownership category), same early-withdrawal penalties, same taxation. The only differences are the minimum deposit and (sometimes) the rate.
Is $100,000 still under FDIC limits?
Yes. FDIC insurance covers up to $250,000 per depositor, per insured bank, per ownership category. A $100,000 CD uses 40% of that limit at one bank in one ownership category — leaving $150,000 of room for additional CDs, savings, or checking accounts at the same institution. If you want to deposit more than $250,000, you'd either spread across multiple FDIC-insured banks or use different ownership categories (individual, joint, retirement account, revocable trust) at the same bank — each ownership category gets its own $250,000 ceiling.
How much tax will I owe on $100,000 CD interest?
A $100,000 CD at 4.50% APY earns $4,500 in year one, taxable as ordinary federal income. Federal tax owed is roughly $540 in the 12% bracket, $990 in the 22% bracket, $1,080 in the 24% bracket, $1,440 in the 32% bracket, or $1,575 in the 35% bracket. State income tax (where applicable) is on top of that. To defer the tax, hold the CD inside a traditional IRA — the interest still accrues each year, but it's not taxable until you withdraw funds in retirement. Roth IRAs avoid the tax entirely if rules are met.