How to calculate CD rates?

You calculate a CD rate by applying A = P(1 + r/n)^(nt): P is your deposit, r is the annual rate as a decimal, n is how many times per year the bank compounds, and t is the term in years. A CD does not pay a flat percentage once — interest is credited at the interval in your disclosure, and each credited amount earns interest of its own for the rest of the term. Convert the rate to a decimal, divide by n, add 1, raise that to the power of n times t, and multiply by your deposit to reach the maturity value. On $10,000 at 4.50% APY compounded daily for 12 months, the formula returns $10,450.00, which is $450.00 in interest. If the quoted rate is already APY rather than nominal, set n to 1, because APY has already absorbed compounding and applying it again overstates the result.

How to calculate a CD rate from the interest you were paid?

You find the rate a CD actually paid by dividing the interest you received by your original deposit, then annualising that ratio if the term was not exactly one year. On a 12-month CD this is a single step: $1,087.50 of interest on a $25,000 deposit is 1,087.50 divided by 25,000, or 4.35%, which is already the annual rate because the term matches a year exactly. The reason a separate annualising step exists for other terms is that a 6-month CD earning 2% has actually paid roughly 4% on an annual basis, so comparing raw interest across different term lengths without adjusting for time misstates the rate. To annualise, add 1 to the total growth ratio (maturity value divided by deposit), raise it to the power of 12 divided by the term in months, then subtract 1. A $10,000 CD that grows to $10,222.52 over 6 months annualises to 4.50%, the same rate as one earning $450.00 over a full 12 months.

How to calculate CD rate differences between banks?

You compare CD rates between banks by running each offer through the compound interest formula A = P(1 + r/n)^(nt) using the same deposit and the same term, then subtracting the two maturity values to get the dollar gap. This matters because a percentage-point difference sounds small in isolation but is only meaningful once it is converted into what you actually receive on your own balance — a rate that looks close on paper can be a real gap in dollars once your deposit size is applied. On $25,000 for 12 months, a 4.35% APY offer matures at $26,087.50 against a 4.00% APY offer's $26,000.00, a $87.50 difference that repeats every time the CD renews. The one rule that must hold for the comparison to be valid is that both figures are on the same basis — always compare APY to APY, never APY to a nominal APR, because a bank quoting APR on a daily-compounding CD will look artificially cheaper than one quoting the equivalent APY.

Do CD rates change during the term?

No, a standard CD's rate is fixed for the entire term once you fund it, which is the main reason to choose one over a variable-rate savings account when rates are expected to fall. The rate is locked because the bank is contractually committing to pay that yield in exchange for you committing not to withdraw the money, and both sides of that trade are fixed at the same time. On a $10,000 deposit at 4.50% APY for 12 months, the maturity value of $10,450.00 is guaranteed the day you open the account regardless of what happens to rates in the broader market afterward. The exception is a small category of products built specifically to move: bump-up CDs let you request one rate increase during the term if the bank's rates rise, step-up CDs increase on a pre-set schedule, and variable-rate CDs track an index throughout — each of these has its own contract terms and is a distinct product from a standard fixed-rate CD.

CD Rate Calculator

देखें कि किसी भी बैंक की CD दर असल में कितनी क़ीमत रखती है।

Compare CD rates across banks and see what each rate is actually worth in dollars at maturity.

परिपक्वता पर: $26,087.50
ब्याज: $1,087.50

आपका CD

जमा राशि

ब्याज दर

दर इस रूप में दी गई है

अवधि

मा

1 वर्ष

सामान्य अवधियाँ

चक्रवृद्धि आवृत्ति

परिपक्वता पर मूल्य: $26,087.50
कुल अर्जित ब्याज: $1,087.50
प्रभावी APY: 4.35%

1 वर्ष की CD में $25,000.00, 4.35% APY पर, दैनिक चक्रवृद्धि के साथ, बढ़कर $26,087.50 हो जाती है — यानी $1,087.50 ब्याज, औसतन $90.63 प्रति माह।

अवधि के दौरान शेष राशि

मूलधनब्याज

आँकड़ों को तालिका में देखें

अवधि के दौरान शेष राशि
माह	मूलधन	ब्याज	शेष
शुरुआत में	$25,000.00	$0.00	$25,000.00
2mo	$25,000.00	$178.05	$25,178.05
5mo	$25,000.00	$447.50	$25,447.50
7mo	$25,000.00	$628.74	$25,628.74
10mo	$25,000.00	$903.02	$25,903.02
1y	$25,000.00	$1,087.50	$26,087.50

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.

मुफ़्त — बिना साइनअप
टाइप करते ही अपडेट
आपके ब्राउज़र में चलता है

फ़ॉर्मूले और सामग्री की अंतिम समीक्षा 21 जुलाई 2026. बैंक दरें अक्सर बदलती रहती हैं — मौजूदा दर सीधे अपने संस्थान से पक्की कर लें।

संक्षिप्त उत्तर

CD दर कैसे निकाली जाती है?

A CD rate calculator turns a bank's advertised rate into the dollar figure you will actually hold at maturity, which is the only number worth comparing between offers. Enter the deposit, the quoted rate and the term, and the tool applies A = P(1 + r/n)^(nt). A $10,000 deposit at 4.50% APY for 12 months matures at $10,450.00. The reason a calculator beats reading the rate is that headline rates are not directly comparable: one bank may quote 4.50% APY while another quotes a 4.40% nominal rate compounded daily, and those are the same CD. Rates are also frequently tied to a minimum balance or a promotional term that reverts on renewal. Convert every offer to a maturity value on your own deposit and your own term, and the ranking often changes.

फ़ॉर्मूला और तरीक़ा

गणना कैसे होती है

A = P(1 + r/n)^(nt)

The standard compound interest formula banks use to credit CD interest.

A: Maturity value — what you withdraw at the end
P: Principal — your opening deposit
r: Nominal annual rate as a decimal (4.35% → 0.0435)
n: Compounding periods per year (daily = 365)
t: Term in years (12 months → 1)

चरण दर चरण

1
Convert the advertised rate to a decimal: divide the percentage by 100.
2
Divide that decimal by the number of compounding periods per year (n).
3
Add 1, then raise the result to the power of n × t.
4
Multiply by your principal. That product is your maturity value.
5
Subtract the principal to isolate the interest the rate earned you.

गाइड

इस कैलकुलेटर का उपयोग कैसे करें

चार इनपुट, तुरंत नतीजे। न कुछ सबमिट करना है, न कहीं साइनअप करना है।

1
Enter your deposit
Type the amount you plan to place in the CD, or drag the slider. Check it clears the bank's minimum opening deposit.
2
Enter the advertised rate
Use the rate from the bank's rate sheet. Toggle APY or APR to match exactly how the bank quotes it — this matters.
3
Set the term
Pick the term the rate applies to. Promotional rates are usually tied to one specific term such as 7 or 13 months.
4
Compare the maturity value
Change the rate to a competing bank's offer and watch the maturity value update live. The gap is the real cost of choosing the lower rate.

उदाहरण

हल किए गए उदाहरण

असली आँकड़े, पूरी तरह हल किए गए — ताकि आप अपने आँकड़ों से कैलकुलेटर को परख सकें।

Comparing two 12-month offers on a $25,000 deposit

Deposit: $25,000
Bank A rate: 4.35% APY
Bank B rate: 4.00% APY
Term: 12 months

Bank A at maturity: $26,087.50
Bank B at maturity: $26,000.00
Difference: $87.50

A 0.35 percentage-point gap is worth $87.50 over one year on $25,000 — small in isolation, but it compounds every time you renew.

कार्यप्रणाली

सटीकता और मान्यताएँ

हर कैलकुलेटर कुछ मान्यताएँ रखता है। हमारी मान्यताएँ यहाँ साफ़-साफ़ दी गई हैं, ताकि आपको ठीक-ठीक पता रहे कि ये आँकड़े क्या शामिल करते हैं और क्या नहीं।

The rate you enter stays fixed for the entire term, which is true of standard fixed-rate CDs.
Interest stays in the CD and compounds rather than being paid out to a linked account.
No additional deposits are made — most CDs do not permit them after opening.
Results are before tax. CD interest is taxable as ordinary income in the year it is credited.

यहाँ Regulation DD (12 CFR 1030) की परंपराएँ अपनाई गई हैं, जो तय करती हैं कि अमेरिकी संस्थान जमा खातों पर APY कैसे बताएँ। बीमित संस्थानों में जमा राशि FDIC द्वारा प्रति जमाकर्ता, प्रति बैंक, प्रति स्वामित्व श्रेणी $250,000 तक सुरक्षित रहती है।

प्राथमिक स्रोत

ये नियम कहाँ से आते हैं

यह कैलकुलेटर जिन परंपराओं का पालन करता है, वे नियामक तय करते हैं, हम नहीं। हर एक जारी करने वाली संस्था से जुड़ी है, ताकि आप हमारी बात मानने के बजाय ख़ुद जाँच सकें।

विवरण

मुख्य जानकारी और नियम

CD खोलने या नवीनीकरण से पहले जान लेने लायक़ बातें, एक नज़र में।

APY already includes the effect of compounding; APR does not. Comparing an APY at one bank to an APR at another overstates the second bank's offer.
Rate sheets change weekly. Confirm the rate is still live and locked before you fund the account.
Promotional 'odd-term' CDs (7, 11, 13 months) often carry the best rates because banks use them to attract new deposits.
A rate is only guaranteed for the initial term — most CDs auto-renew at the bank's then-current standard rate, which is usually lower.

आपस में कैसे जुड़े हैं

यह कैलकुलेटर किसके लिए है

Rate shoppers
You have offers open in three browser tabs and need the dollar difference, not the percentage difference.
Renewing savers
Your CD is maturing and you want to know whether your bank's renewal rate is worth accepting.
Cash-heavy planners
You are parking a large balance and even a fractional rate gap moves real money.

हर CD कैलकुलेटर

नौ केंद्रित टूल, जो सर्टिफिकेट ऑफ़ डिपॉज़िट की पूरी तस्वीर कवर करते हैं।

सामान्य प्रश्न