See what five years in a CD actually earns.
金利の表示方法
5 年
一般的な期間
複利頻度
5 年 の定期預金に $25,000.00、金利 3.80% APY、日次複利で $30,124.98 に増加 — 利息は $5,124.98、月平均 $85.42 です。
期間中の残高
| か月目 | 元本 | 利息 | 残高 |
|---|---|---|---|
| 開設時 | $25,000.00 | $0.00 | $25,000.00 |
| 1y | $25,000.00 | $950.00 | $25,950.00 |
| 2y | $25,000.00 | $1,936.10 | $26,936.10 |
| 3y | $25,000.00 | $2,959.67 | $27,959.67 |
| 4y | $25,000.00 | $4,022.14 | $29,022.14 |
| 5y | $25,000.00 | $5,124.98 | $30,124.98 |
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.
計算式とコンテンツの最終確認日 . 銀行の金利は頻繁に変動します。最新の金利は必ずご利用の金融機関に直接ご確認ください。
結論から
A 5-year CD is the longest term most banks offer as standard, and it exists to sell one thing: a rate you cannot lose for half a decade. A $25,000 deposit at 3.80% APY earns $5,124.98 and matures at $30,124.98; $100,000 matures at $120,499.92. Over five years compounding contributes $374.98 more than simple interest would have, so the effect is finally material rather than decorative. Two considerations dominate the decision. Rolling one-year CDs at today's 4.25% would produce $30,783.67 — $658.69 ahead — so on current pricing you are paying to lock in, not being paid to. And the early withdrawal penalty at this term is typically a full 365 days of interest, $950.00 on $25,000, which means an exit in the first two years hands back most of what you earned. Take the five-year term when you are confident about both the money and your view on rates.
計算式と手法
A = P(1 + r/n)^(nt), t = 5
Five years of compounding. At 3.80% on $25,000 it adds $374.98 over what simple interest would have paid.
Convert the 60-month rate to a decimal and divide by n.
Raise (1 + r/n) to the power n × 5.
Multiply by the deposit for the maturity value.
Subtract the deposit for the total interest across five years.
Multiply the deposit by the rate to approximate a 365-day early withdrawal penalty.
ガイド
Type the amount or drag the slider. Five years of interest is enough to push a large deposit past the $250,000 insurance limit — check the maturity value against it.
Use the rate quoted for the five-year term. On an inverted curve it will usually be below the one-year rate; that is expected, not an error.
Five years is the first term where the curve visibly bends away from a straight line. That bend is the compounding you are buying.
Multiply the deposit by the rate for an approximate 365-day penalty. If that number would be unsurvivable, the term is too long for this money.
例
入力値
結果
Compounding adds $374.98 across five years — about 7.9% more interest than a simple-interest account at the same rate. This is the term where the effect stops being a rounding difference.
入力値
結果
Two years in, the penalty takes nearly half the interest and cuts the realised return to about 1.95% a year — below what a savings account would have paid with no lock-up at all. The penalty does not just cost money; it retroactively makes the whole decision wrong.
算出方法
The rate is fixed for all sixty months and interest compounds inside the CD.
The penalty example uses a 365-day interest convention, which is the most common at five years. Some institutions charge 540 days on terms this long — check the disclosure.
The rolling comparison holds the one-year rate at 4.25% for five consecutive years, which is a scenario for contrast rather than a prediction.
Figures are gross of tax and of inflation. At 2.5% inflation, a 3.80% nominal return is roughly 1.27% in real terms.
計算の慣行は、米国の金融機関が預金口座のAPYを開示する方法を定めたRegulation DD（12 CFR 1030）に従っています。付保対象の金融機関への預金は、預金者ごと・銀行ごと・所有区分ごとに$250,000までFDICで保護されます。
一次情報
詳細
Five years is the standard maximum term. Beyond it, availability thins sharply and the rate premium usually disappears entirely — which is why a ten-year CD is a specialist product rather than a longer version of this one.
The penalty at this term is typically a full year of interest, $950.00 on $25,000 at 3.80%. Federal rules allow the shortfall to come from principal if the CD has not earned that much yet, so an exit inside year one returns less than you deposited.
Interest is taxed annually as ordinary income. Five years produces five 1099-INT forms and five tax bills on money you cannot access without triggering the penalty.
A five-rung ladder using 1, 2, 3, 4 and 5-year CDs earns close to the five-year rate on average while freeing a fifth of the money every twelve months. For most savers it is the better version of this decision.
No-penalty CDs exist but pay materially less. If there is real doubt about the horizon, the lower rate on a no-penalty product is usually cheaper than the penalty risk on this one.
つながり
活用シーン
If your view is that rates fall from here, five years at today's level is the trade that expresses it — and the $658.69 you appear to give up against rolling is the premium on that insurance.
A known figure on a known date, insured to $250,000, with no market risk. For the stable sleeve of a retirement plan the five-year CD does a job no fund can quite replicate.
Read the penalty example before committing. Five years is a long time, and the term punishes changed circumstances harder than any other standard CD.
関連ツール
At 3.80% APY, $5,124.98 in total — maturing at $30,124.98. Compounding contributes $374.98 of that; a simple-interest account at the same rate would have paid $4,750.00.
セキュリティとプライバシー
Regulation DDのもとで銀行が用いるのと同じ、複利とAPYの慣行を使用しています。
登録もメールアドレスの入力も課金もありません。すべての計算機を、初回から制限なくお使いいただけます。
すべての計算はJavaScriptによりブラウザ内で実行されます。サーバーへの送信も保存も行いません。
HTTPSで配信しており、混在コンテンツはありません。詳しくは プライバシーポリシー をご覧ください。すべての数値の根拠となる 計算式と算出方法 も公開しています。
See the compounded maturity value and exactly what breaking the CD early would cost you.