See what six months in a CD actually earns.
이자율 표시 방식
6 개월
일반적인 기간
복리 주기
6 개월 예금증서에 US$25,000.00, 금리 4.40% APY, 일 복리 복리로 US$25,544.08까지 증가 — 이자 US$544.08, 월평균 US$90.68입니다.
기간 중 잔액
| 개월 | 원금 | 이자 | 잔액 |
|---|---|---|---|
| 개설 시 | US$25,000.00 | US$0.00 | US$25,000.00 |
| 1mo | US$25,000.00 | US$89.87 | US$25,089.87 |
| 2mo | US$25,000.00 | US$180.06 | US$25,180.06 |
| 4mo | US$25,000.00 | US$361.42 | US$25,361.42 |
| 5mo | US$25,000.00 | US$452.58 | US$25,452.58 |
| 6mo | US$25,000.00 | US$544.08 | US$25,544.08 |
Calculated in your browser using A = P(1 + r/n)nt. Nothing is sent to a server. Figures are before tax; confirm exact terms with your bank.
공식과 내용 최종 검토일 . 은행 금리는 자주 바뀝니다. 현재 금리는 거래 기관에 직접 확인하십시오.
짧은 답변
A 6-month CD locks your deposit for half a year at a fixed rate, and at most banks it is the best-priced short term on the sheet — banks compete hardest here because six months is where deposit money is most mobile. At 4.40% APY a $10,000 deposit earns $217.63 and matures at $10,217.63; $25,000 earns $544.08. The half-year term means you receive roughly half the advertised APY: 4.40% APY over six months is about 2.18% of your deposit, not 4.40%. The interesting comparison is not against savings but against the one-year CD. Rolling a 6-month CD twice at 4.40% produces $26,100.00 on $25,000, against $26,062.50 for a single 12-month CD at 4.25% — the shorter term wins by $37.50, provided the rate is still there in six months. That proviso is the entire decision.
공식과 방법
A = P(1 + r/n)^(nt), t = 0.5
Half a year of compounding. At 4.40% APY that returns about 2.18% of the deposit, not 4.40%.
Convert the 6-month rate to a decimal and divide by n.
Raise (1 + r/n) to the power n × 0.5 — about 182 daily credits.
Multiply by the deposit for the six-month maturity value.
Subtract the deposit to isolate the interest.
To test rolling, square the six-month growth factor and compare it against a 12-month CD.
가이드
Type the amount or drag the slider. Six-month promotional CDs sometimes require a higher minimum than the standard tier — check before you assume the rate applies.
Banks price each term separately and the six-month line is often the most competitive. Do not carry over the rate from a different term.
You receive roughly half the annualised APY over six months. The interest tile shows the actual dollars rather than the annualised percentage.
Switch the term chip to 12 and compare. If the six-month rate is higher, you are being paid to stay flexible — but only until it renews.
예시
입력값
결과
The 4.40% APY delivers 2.18% across six months. Savers routinely expect the full 4.40% and are disappointed at maturity — the APY is a per-year figure and the term is half a year.
입력값
결과
Rolling wins by $37.50 only if the second six-month rate matches the first. If it renews 0.50% lower you finish at $26,037.43 — behind the 12-month CD. The 12-month term is buying rate certainty, and $37.50 is what that certainty costs.
계산 방법
Six months is treated as 0.5 years. Banks count actual days, so a 181- or 184-day half-year differs marginally from the figure shown.
The rolling comparison holds the second-term rate constant, which is the assumption most likely to be wrong. It is shown to make the trade-off visible, not as a forecast.
The rate is fixed and the interest compounds inside the CD rather than being paid out.
The savings comparison assumes the savings rate persists. It is variable and can be reduced without notice.
계산 관행은 미국 금융기관이 예금 계좌의 APY를 공시하는 방식을 규정한 Regulation DD(12 CFR 1030)를 따릅니다. 예금자보호 대상 기관의 예금은 예금자별, 은행별, 소유 형태별로 $250,000까지 FDIC의 보호를 받습니다.
1차 자료
세부 사항
Six months is where promotional pricing concentrates. If one term on a bank's sheet is materially above the others, it is frequently this one — and it usually reverts to a standard rate on renewal.
A 90-day interest penalty on a six-month CD costs roughly half the term's interest. On $25,000 at 4.40% that is about $271 against $544 earned, so an early withdrawal at the halfway point still leaves you ahead of zero — unlike a 3-month CD.
The APY is annualised regardless of term length. Regulation DD requires it, which is what makes a six-month CD comparable with a five-year one, but it is also why the interest looks smaller than savers expect.
A six-month CD renews twice a year, so you face the reinvestment decision twice as often as on a one-year term. On an inverted curve that is an advantage; when rates are falling it is the main risk.
Pairing a six-month CD with a longer one is the simplest form of laddering — half the money stays liquid within six months, half captures the longer rate.
서로의 관계
활용 사례
Six months is the shortest term that reliably carries a competitive rate. It is the default answer for money you will not need immediately but do not want to commit for a year.
If you think rates are near a peak, six months lets you capture today's rate and reassess before the year is out. If you think they are near a floor, the twelve-month term is the safer choice.
Half a year is long enough to be worth doing and short enough that a mistake is cheap. Most people's first CD should probably be this one.
관련 도구
At 4.40% APY, $217.63 — maturing at $10,217.63. The APY is an annual figure, so a six-month term returns about half of it: 2.18% of the deposit rather than 4.40%.
보안과 개인정보
Regulation DD를 따르는 은행과 동일한 복리 및 APY 관행을 씁니다.
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Enter your deposit and the rate your bank quotes, and compare it against a twelve-month lock.