CD calculator

Calculate CD interest and maturity value from the APY or APR and compounding, convert APY to APR, and see what an early withdrawal penalty costs.

புதுப்பிக்கப்பட்டது சரிபார்க்கப்பட்ட எடுத்துக்காட்டுகள்: 6

$
%
Banks advertise the APY, which includes compounding; the APR is the stated rate before compounding
months of interest
From your deposit agreement; 90 days is about 3 months
months
மேலும் விருப்பங்கள்
%
Your marginal rate; CD interest is taxed as ordinary income
முயற்சிக்கவும்
Value at maturity
$
Value at maturity: $10,400.00
தசம இடங்கள்: 2; அருகிலுள்ள மதிப்பு; சம தூரத்தில் இரட்டைப்படை இலக்கை நோக்கி
Interest earned
$400.00
APY
4.0000%
APR (stated rate)
3.9223%
Early withdrawal penalty
$98.06
Cash-out value after the penalty
$10,099.98
Gain if cashed out early
$99.98
Penalty covered after
3.0months

$10,000.00 at 4% APY (3.9223% APR) grows to $10,400.00 over 12 months, earning $400.00. Cashing out after 6 months returns $10,099.98 once the $98.06 penalty is taken.

Balance and what you would get by cashing out

$10K$10.1K$10.2K$10.3K$10.4K02.557.510MonthsDepositCash out at 6 mo
BalanceCash-out value after penalty

Interest kept: at maturity or cashed out at 6 months

At maturity$400By month 6$198Penalty−$98Kept$100
Month-by-month growth வரிசைகள்: 12
மாதம்வட்டிநிலுவைCash-out value after penalty
1$32.74$10,032.74$9,934.68
2$32.84$10,065.58$9,967.52
3$32.95$10,098.53$10,000.48
4$33.06$10,131.59$10,033.54
5$33.17$10,164.76$10,066.71
6$33.28$10,198.04$10,099.98
7$33.39$10,231.42$10,133.37
8$33.50$10,264.92$10,166.86
9$33.60$10,298.52$10,200.47
10$33.71$10,332.24$10,234.18
11$33.83$10,366.06$10,268.01
12$33.94$10,400.00$10,400.00
கணக்கிடும் முறை S
  1. APR from the APY

    r=365[(1+0.04)1/365−1]=3.9223%r = 365\left[(1 + 0.04)^{1/365} - 1\right] = 3.9223\%
  2. Term in years

    t=1212=1t = \frac{12}{12} = 1

    Each month counts as 365 ÷ 12 days. Banks count the actual days, which can move daily-compounded interest by a few cents.

  3. Value at maturity

    A=10,000.00×(1+0.04)1=10,400.00A = 10{,}000.00 \times (1 + 0.04)^{1} = 10{,}400.00
  4. Interest earned

    10,400.00−10,000.00=400.0010{,}400.00 - 10{,}000.00 = 400.00
  5. Early withdrawal penalty

    10,000.00×0.03922282044×312=98.0610{,}000.00 \times 0.03922282044 \times \frac{3}{12} = 98.06

    Simple interest on the deposit at the APR for the penalty period.

  6. Cash-out value after 6 months

    10,000.00×(1+0.04)6/12−98.06=10,099.9810{,}000.00 \times (1 + 0.04)^{6/12} - 98.06 = 10{,}099.98
  7. When the penalty is covered

    m=12 ln⁡ ⁣(1+0.03922282044×3/12)ln⁡(1+0.04)=2.99 monthsm = 12\,\frac{\ln\!\left(1 + 0.03922282044 \times 3/12\right)}{\ln(1 + 0.04)} = 2.99\ \text{months}

CD calculator பற்றி

A certificate of deposit pays a fixed rate for a fixed term. The value at maturity is the deposit times (1 + APR ÷ k) raised to k × years, where k is the number of compounding periods a year; entered as an APY, the same value is the deposit times (1 + APY) raised to the years. The calculator converts between the two rates and shows what breaking the CD early leaves you after a penalty of a set number of months of interest.

With the defaults, $10,000 in a 12-month CD at 4.00% APY compounded daily earns $400.00. That APY equals an APR of 3.9223%. Cashing out after 6 months with a 3-month penalty leaves $10,099.98, since the $98.06 penalty takes about half of the $198.04 earned by then.

The penalty is computed as simple interest on the deposit at the APR. Deposit agreements differ, and Regulation DD requires the bank to disclose how its penalty is calculated. Terms in months use 365 ÷ 12 days per month.

தீர்க்கப்பட்ட எடுத்துக்காட்டுகள்

Regulation DD example: $1,000 six-month CD, 182 days at 6% compounded daily

Deposit
1000
Interest rate
6%
Rate is
ஆண்டு சதவீத விகிதம் (APR)
Compounding
Daily (365)
Term
182
Term in
Days
Early withdrawal penalty
3 months of interest
Cash out early after
3 months
Interest earned
30.37
APY
6.1831%

சரிபார்ப்பின் மூலம்: 12 CFR 1030 Appendix A, Part I.A, example (2): interest $30.37, APY 6.18% (Python decimal: (1 + 0.06/365)^365 − 1 = 6.183131 %)

$10,000 at 5% compounded yearly for 3 years

Deposit
10,000
Interest rate
5%
Rate is
ஆண்டு சதவீத விகிதம் (APR)
Compounding
Annually
Term
36
Term in
மாதங்கள்
Early withdrawal penalty
3 months of interest
Cash out early after
12 months
Value at maturity
11,576.25
Interest earned
1,576.25

சரிபார்ப்பின் மூலம்: calculator.net CD calculator default inputs (10,000, 5%, 3 years, annually) and its published result, $11,576.25 and $1,576.25 interest

APY 5% compounded monthly converts to APR

Deposit
10,000
Interest rate
5%
Rate is
APY
Compounding
Monthly
Term
12
Term in
மாதங்கள்
Early withdrawal penalty
3 months of interest
Cash out early after
6 months
APR (stated rate)
4.8889%
Value at maturity
10,500.00

சரிபார்ப்பின் மூலம்: Python decimal: 12 × (1.05^(1/12) − 1) = 4.888949 %; one year at 5% APY is 10,500 by definition

Defaults: $10,000, 4% APY daily, 12 months, 3-month penalty after 6 months

Deposit
10,000
Interest rate
4%
Rate is
APY
Compounding
Daily (365)
Term
12
Term in
மாதங்கள்
Early withdrawal penalty
3 months of interest
Cash out early after
6 months
Interest earned
400.00
APR (stated rate)
3.9223%
Early withdrawal penalty
98.06
Cash-out value after the penalty
10,099.98
Penalty covered after
3.0 months

சரிபார்ப்பின் மூலம்: Python decimal: r = 365 × (1.04^(1/365) − 1); penalty 10,000 × r × 3/12; 10,000 × 1.04^0.5 − penalty

கேள்விகள்

How is interest on a CD calculated?

Multiply the deposit by (1 + APR ÷ k) to the power k × years, where k is the compounding periods per year, and subtract the deposit. $10,000 at a 5% APR compounded yearly for 3 years grows to 10,000 × 1.05³ = $11,576.25, so the interest is $1,576.25. With the rate given as an APY, use (1 + APY) to the power of the years instead.

What is the difference between APY and APR on a CD?

The APR is the stated yearly rate before compounding; the APY includes compounding and shows what $100 earns in a year. A 5% APY compounded monthly is an APR of 4.8889%, and a 6% APR compounded daily is an APY of 6.1831%. Regulation DD (Truth in Savings) requires banks to disclose both, and the APY is the one to compare CDs on.

What is the penalty for withdrawing a CD early?

Whatever the deposit agreement says, usually a number of months or days of interest. The federal minimum is in Regulation D: money withdrawn within six days of deposit must lose at least seven days' simple interest. On $10,000 at a 3.9223% APR, a 3-month penalty is 10,000 × 0.039223 × 3 ÷ 12 = $98.06.

Can an early withdrawal penalty eat into the principal?

Yes, when the penalty is larger than the interest earned so far. On $10,000 at 4% APY, one month earns $32.74, but a 3-month penalty is $98.06, so cashing out returns $9,934.68 and you lose $65.32 of your deposit. With these terms the penalty is covered after about 3 months.

Are CDs FDIC insured?

Yes. The FDIC lists certificates of deposit among insured deposits, covered up to $250,000 per depositor, per insured bank, for each account ownership category. Coverage is principal plus interest accrued through the date the bank fails, so a $245,000 deposit at 4% APY passes the limit after about 6.2 months.

“CD calculator” எவ்வளவு துல்லியமானது?

துல்லியம் உங்கள் உள்ளீடுகளையும் முறையின் அனுமானங்களையும் சார்ந்தது. தசமக் கணக்கீடு 50 முக்கிய இலக்கங்களைப் பயன்படுத்துகிறது. ஆனால் மதிப்பீடுகள், எண் முறைகள், மூலத் தரவுகள் குறைந்த துல்லியத்தைக் கொண்டிருக்கலாம்; காட்டப்படும் மதிப்பை வட்டமிடுவது இந்த வரம்புகளை நீக்காது. சுயாதீன மூலங்களின் தீர்வுகளுடன் சரிபார்க்கப்பட்ட எடுத்துக்காட்டுகள்: 6. எடுத்துக்காட்டாக, “Regulation DD example: $1,000 six-month CD, 182 days at 6% compounded daily” என்பது 12 CFR 1030 Appendix A, Part I.A, example (2): interest $30.37, APY 6.18% (Python decimal: (1 + 0.06/365)^365 − 1 = 6.183131 %) உடன் சரிபார்க்கப்படுகிறது.

இந்த முறையின் மூலம் என்ன?

12 CFR 1030 (Regulation DD, Truth in Savings), Appendix A: annual percentage yield calculation; 12 CFR 204.2(c)(1)(i) (Regulation D): minimum early withdrawal penalty on time deposits; 12 CFR 1030.4(b)(6)(ii): disclosure of early withdrawal penalties; FDIC: Understanding deposit insurance.

இந்தக் கணிப்பான் பற்றி

A=P(1+rk)kt=P(1+APY)t,APY=(1+rk)k−1,penalty=P r m12A = P\left(1+\tfrac{r}{k}\right)^{kt} = P(1+\text{APY})^{t},\qquad \text{APY} = \left(1+\tfrac{r}{k}\right)^{k}-1,\qquad \text{penalty} = P\,r\,\tfrac{m}{12}

ஆதாரங்கள்

  1. 12 CFR 1030 (Regulation DD, Truth in Savings), Appendix A: annual percentage yield calculation
  2. 12 CFR 204.2(c)(1)(i) (Regulation D): minimum early withdrawal penalty on time deposits
  3. 12 CFR 1030.4(b)(6)(ii): disclosure of early withdrawal penalties
  4. FDIC: Understanding deposit insurance

திட்டமிடலுக்கு மட்டும். கடன் வழங்குநர்கள், வரி அமைப்புகள், சந்தைகள் தங்களின் வட்டமிடல் முறைகள், கட்டணங்கள், விதிகளைப் பயன்படுத்துகின்றன; உறுதியளிக்கும் முன் அவர்களிடம் தொகைகளைச் சரிபார்க்கவும்.

ஆதாரங்களுடன் சரிபார்க்கப்பட்டது

இந்தக் கணிப்பானில் சுயாதீன ஆதாரங்களிலிருந்து பதில்கள் பெறப்பட்ட 6 தீர்க்கப்பட்ட எடுத்துக்காட்டுகள் உள்ளன. இவை சோதனைத் தொகுப்பில் இயங்குகின்றன; இங்கேயும் அவற்றை இயக்கலாம்.

தொடர்புடைய கணிப்பான்கள்