Do longer CD terms always pay more?

No — a longer CD term only pays more when the market expects rates to hold steady or rise, and that assumption breaks down whenever the yield curve inverts because the market instead expects rates to fall. In an inverted environment, a bank does not want to guarantee today's higher rate for years if it expects to pay depositors less within months, so short CDs can end up paying more than long ones on the same rate sheet. Banks also price odd promotional terms, such as 7 or 13 months, aggressively enough to beat the standard 12-month rate, since they are hard to comparison-shop against a standard table. Suppose a bank's rate sheet quotes 4.60% APY on a 7-month promotional CD against 4.50% APY on its standard 12-month CD: on $10,000, the shorter, odd-term CD can still end up the better headline rate despite locking your money for less time. Always compare the actual rate sheet rather than assuming a longer lock is automatically the higher-paying choice.

What is the standard early withdrawal penalty on a 12-month CD?

Most banks charge a penalty of three to six months of simple interest on the principal for breaking a CD in the six-to-eighteen-month range, calculated as principal times rate times penalty months divided by twelve, with the figure set by your account disclosure rather than any industry standard. The penalty scales with term length: a bank guaranteeing a short rate has less funding certainty to protect than one guaranteeing a multi-year rate, so short terms carry lighter penalties. Suppose a $10,000 CD carries a 4.50% rate, compounded daily, for a 12-month term, with a 3-month penalty, and you withdraw halfway through it. The penalty in that case comes to 10,000 × 0.045 × (3 ÷ 12) = $112.50, leaving net proceeds of $10,115.04 rather than the full $10,450.00 you would have collected at maturity. Terms of several years commonly carry a larger penalty, often nine to twelve months of interest, since the bank is giving up a longer guarantee.

Should I choose a 7-month CD over a standard 6-month or 12-month term?

Yes, if the 7-month rate is genuinely the highest one on the bank's rate sheet, provided you plan around what happens at renewal rather than treating the promotional term as a standing arrangement. Banks price odd terms aggressively because they are hard to line up against a standard rate table, which is why they often carry the best rate on offer. Suppose a bank offers 4.75% APY on a 7-month promotional CD versus 4.50% APY on its standard 12-month CD: on a $10,000 deposit, the 7-month CD earns about $274.40 over its shorter term, working out to a higher annualized rate even though the total dollar figure is smaller than a full year would produce. The catch is that a 7-month CD typically auto-renews into a standard 6-month CD at whatever the bank is currently offering, often a full point or more lower, after a short grace period, so diary the maturity date and re-shop rather than letting it roll over automatically.

How do I pick a CD term if I don't know exactly when I'll need the money?

Treat it as a laddering problem rather than a single-term decision, since spreading a deposit across several maturities gives you regular access points without forcing a guess about one specific deadline. The mechanism is straightforward: instead of locking the entire sum in one term, you split it so that a portion becomes available on a rolling schedule while the rest continues earning whatever rate longer terms happen to pay at the time you built the ladder. Suppose you split $30,000 evenly across three-month, six-month and twelve-month CDs, all quoted at the same 4.50% APY — $10,000 in each rung matures at $10,110.65, $10,222.52 and $10,450.00 respectively, giving you a cash access point every few months rather than one single date. If your circumstances change and you need cash sooner than a given rung's maturity, you still only face the standard early withdrawal penalty on that one rung rather than on the entire deposit.

Does a 12-month CD earn exactly twice what a 6-month CD earns at the same rate?

Almost, but not quite — a twelve-month CD earns slightly more than double a six-month CD's interest at the identical APY, because APY is defined as the effective yield over a full year, and a half-year captures a bit less than exactly half of that annual compounding effect. The mechanism is the same reason compounding rewards patience generally: the shorter the fraction of a year you hold the CD, the fewer compounding periods have occurred, so the return is not a perfectly linear fraction of the annual figure. At 4.50% APY, a six-month CD earns $222.52 in interest on a $10,000 deposit, compounded daily, while a twelve-month CD at the identical rate earns $450.00 — a bit more than double $222.52, which would be $445.05, because the second half of the year compounds on a slightly larger, already-grown balance. The gap between double and the true figure widens further at higher rates or with less frequent compounding, though it stays modest at typical CD rates.

TermsStrategy9 分钟阅读

Choosing the Best CD Term: 3-Month vs. 6-Month vs. 1-Year

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到期时: US$10,450.00
利息: US$450.00

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US$10,000.00 for 1 year, compounded daily. Runs in your browser.

The best CD term is the one that matches when you need the money, not the one with the highest rate. Short terms preserve flexibility and limit penalty exposure; longer terms lock in a rate. Promotional odd terms often beat both on yield.

发布于 2025年10月26日 · 最后核验 2026年7月22日 · 撰写与事实核查 Ali Raza · 我们的方法论 · 术语解释

Start with the deadline, not the rate

Term selection is a liquidity decision wearing a rate label. If the money is due in eight months, an eight-month horizon is the constraint that matters, not whichever term happens to sit highest on the rate sheet. A 12-month CD paying more on paper is not actually paying more once you count the early withdrawal penalty you would owe for pulling out at month eight to meet that deadline.

Ask the deadline question first, before you ask the rate question: hard date, soft date, or no date at all. A hard date — a closing, a tuition bill, a tax payment — points you straight at a CD maturing on or just before it. A soft date, where you probably will not need the money for a year but might, argues for a shorter term or a no-penalty CD. No date at all is the case for laddering across several terms rather than picking one.

What each standard term length is actually for

Every standard term does a different job. Matching the label to the job, rather than to the number printed next to it, is most of what deciding well looks like:

3 months: near-cash. The rate premium over a savings account is thin, and the main reason to use one is the discipline of a lock rather than the yield itself.
6 months: the workhorse for a fuzzy but near deadline. Penalty exposure if you break it stays around three months of interest, the standard penalty for terms under a year.
12 months: the usual benchmark savers compare against. Enough term to earn a real rate premium without a multi-year commitment.
18 to 24 months: a further step up in rate for savers confident they will not need the cash for at least a year and a half.
3 to 5 years: the longest standard terms, appropriate for money that genuinely will not be touched, or for the long rungs of a ladder.

A worked comparison: one rate, three terms

Suppose your bank quotes 4.50% APY on every term from three months to five years — banks sometimes do exactly this to keep a rate sheet simple. Deposit $10,000 at that rate with daily compounding, and the three-month CD matures at $10,110.65, the six-month CD at $10,222.52, and the twelve-month CD at $10,450.00.

That is $110.65, $222.52 and $450.00 of interest respectively — not an even split of the annual figure. A quarter of $450.00 is $112.50, but the three-month CD actually earns $110.65. The gap is small but real: APY assumes a full year of compounding, so a fraction of a year earns very slightly less than that same fraction of the annual number, because the extra compounding periods a longer term captures have not happened yet inside a shorter one.

Why longer isn't always better: the yield curve

The assumption that a longer lock always pays more holds only when the market expects rates to stay flat or rise. When it expects rates to fall, the yield curve inverts and short CDs can pay more than long ones, because a bank does not want to guarantee today's higher rate for five years if it expects to be paying less to depositors in six months.

This is not a forecast you need to make yourself. It is a reason to read the actual rate sheet in front of you rather than assume the 5-year column is automatically the winner. Compare APY to APY at your real term before deciding, since the ordering between short and long terms flips more often than most savers expect.

What breaking a term early actually costs

Term length changes more than the rate you earn if you hold to maturity — it also sets the penalty you would owe for leaving early, and that penalty typically scales with the term. Suppose a $10,000 CD pays 4.50%, compounded daily, and you withdraw at month six. On a 12-month CD carrying the standard sub-year penalty of 3 months of interest, you have earned $227.54 by month six; the penalty is 10,000 × 0.045 × (3 ÷ 12) = $112.50, leaving net interest of $115.04 and net proceeds of $10,115.04.

Open the same rate as a 36-month CD instead, and the longer term commonly carries a 6-month penalty. Withdraw at the same month six and you have earned the identical $227.54 in interest, but the penalty is now 10,000 × 0.045 × (6 ÷ 12) = $225.00, leaving net interest of only $2.54 and net proceeds of $10,002.54. Same rate, same six months held, more than four times the penalty, because the longer of two terms was chosen for money that turned out to have a nearer deadline after all.

Promotional odd terms and the renewal trap

Banks price odd terms — 7, 11, 13 months — aggressively, because they sit off the standard rate table and are hard to comparison-shop against a 6-month or 12-month column. They are frequently the best rate on the sheet, and there is no reason to avoid one purely because the number looks unusual.

The catch shows up at maturity. A 7-month CD taken at a strong promotional rate typically auto-renews into a standard 6-month CD at whatever the bank is currently offering — often a point or more lower — after a grace period of about 7 to 10 days. Diary the maturity date the day you open the account, not the week it arrives, because the notice is easy to miss and the window to act without penalty is short.

Matching term to a specific goal

Translating a life event into a term is usually simpler than it feels once you separate the deadline from the rate:

A house down payment closing in ten months: a 9- or 10-month CD if one exists, otherwise the shortest standard term that clears the date, such as 6 months rolled once.
A tax bill due next spring: match the CD's maturity to a date shortly before the payment is due, not to the calendar year, so a delayed credit does not put you at risk of paying late.
A wedding or large purchase 18 months out: an 18- or 24-month term captures a higher rate than a 12-month CD without risking an early withdrawal penalty.
The fixed-income portion of a retirement account with no specific spending date: this is a laddering decision, not a single-term decision, and belongs across several maturities rather than in one CD.

Mistakes savers make when picking a term

A few patterns account for most of the regret savers report after the fact:

Choosing the longest term purely because it pays the most, without checking whether the money might realistically be needed before maturity.
Overlooking odd promotional terms because they do not fit a mental model of '6 or 12 months', and missing the best rate actually on the sheet.
Letting a short CD auto-renew without comparing the new standard rate against what else is available at maturity.
Assuming a 12-month rate quoted today will still be on offer when the CD matures — it usually is not, in either direction.

常见问题

No — a longer CD term only pays more when the market expects rates to hold steady or rise, and that assumption breaks down whenever the yield curve inverts because the market instead expects rates to fall. In an inverted environment, a bank does not want to guarantee today's higher rate for years if it expects to pay depositors less within months, so short CDs can end up paying more than long ones on the same rate sheet. Banks also price odd promotional terms, such as 7 or 13 months, aggressively enough to beat the standard 12-month rate, since they are hard to comparison-shop against a standard table. Suppose a bank's rate sheet quotes 4.60% APY on a 7-month promotional CD against 4.50% APY on its standard 12-month CD: on $10,000, the shorter, odd-term CD can still end up the better headline rate despite locking your money for less time. Always compare the actual rate sheet rather than assuming a longer lock is automatically the higher-paying choice.
Most banks charge a penalty of three to six months of simple interest on the principal for breaking a CD in the six-to-eighteen-month range, calculated as principal times rate times penalty months divided by twelve, with the figure set by your account disclosure rather than any industry standard. The penalty scales with term length: a bank guaranteeing a short rate has less funding certainty to protect than one guaranteeing a multi-year rate, so short terms carry lighter penalties. Suppose a $10,000 CD carries a 4.50% rate, compounded daily, for a 12-month term, with a 3-month penalty, and you withdraw halfway through it. The penalty in that case comes to 10,000 × 0.045 × (3 ÷ 12) = $112.50, leaving net proceeds of $10,115.04 rather than the full $10,450.00 you would have collected at maturity. Terms of several years commonly carry a larger penalty, often nine to twelve months of interest, since the bank is giving up a longer guarantee.
Yes, if the 7-month rate is genuinely the highest one on the bank's rate sheet, provided you plan around what happens at renewal rather than treating the promotional term as a standing arrangement. Banks price odd terms aggressively because they are hard to line up against a standard rate table, which is why they often carry the best rate on offer. Suppose a bank offers 4.75% APY on a 7-month promotional CD versus 4.50% APY on its standard 12-month CD: on a $10,000 deposit, the 7-month CD earns about $274.40 over its shorter term, working out to a higher annualized rate even though the total dollar figure is smaller than a full year would produce. The catch is that a 7-month CD typically auto-renews into a standard 6-month CD at whatever the bank is currently offering, often a full point or more lower, after a short grace period, so diary the maturity date and re-shop rather than letting it roll over automatically.
Treat it as a laddering problem rather than a single-term decision, since spreading a deposit across several maturities gives you regular access points without forcing a guess about one specific deadline. The mechanism is straightforward: instead of locking the entire sum in one term, you split it so that a portion becomes available on a rolling schedule while the rest continues earning whatever rate longer terms happen to pay at the time you built the ladder. Suppose you split $30,000 evenly across three-month, six-month and twelve-month CDs, all quoted at the same 4.50% APY — $10,000 in each rung matures at $10,110.65, $10,222.52 and $10,450.00 respectively, giving you a cash access point every few months rather than one single date. If your circumstances change and you need cash sooner than a given rung's maturity, you still only face the standard early withdrawal penalty on that one rung rather than on the entire deposit.
Almost, but not quite — a twelve-month CD earns slightly more than double a six-month CD's interest at the identical APY, because APY is defined as the effective yield over a full year, and a half-year captures a bit less than exactly half of that annual compounding effect. The mechanism is the same reason compounding rewards patience generally: the shorter the fraction of a year you hold the CD, the fewer compounding periods have occurred, so the return is not a perfectly linear fraction of the annual figure. At 4.50% APY, a six-month CD earns $222.52 in interest on a $10,000 deposit, compounded daily, while a twelve-month CD at the identical rate earns $450.00 — a bit more than double $222.52, which would be $445.05, because the second half of the year compounds on a slightly larger, already-grown balance. The gap between double and the true figure widens further at higher rates or with less frequent compounding, though it stays modest at typical CD rates.

资料来源

上文所述的规则与限额均直接取自发布机构，而非二手转述。

Regulation DD, 12 CFR Part 1030 — Truth in Savings — CFPB
12 CFR 1030.4(b)(4) — early withdrawal penalty disclosure — CFPB
Federal Open Market Committee policy decisions — Federal Reserve