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.

تازہ کاری جانچی گئی مثالیں: 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
مزید اختیارات
%
Your marginal rate; CD interest is taxed as ordinary income
آزمائیں
Value at maturity
$
Value at maturity: $10,400.00
اعشاری مقامات: 2؛ قریب ترین؛ برابر فاصلے پر جفت ہندسے کی طرف
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 قطاریں: 12
مہینہسودبقایاCash-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
حساب کا طریقہ 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 کے بارے میں

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.

حل شدہ مثالیں

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

Deposit
1000
Interest rate
6%
Rate is
سالانہ شرحِ فیصد (⁨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%

جانچ کا ماخذ: ⁨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
سالانہ شرحِ فیصد (⁨APR⁩)
Compounding
Annually
Term
36
Term in
مہینے
Early withdrawal penalty
3 months of interest
Cash out early after
12 months
Value at maturity
11,576.25
Interest earned
1,576.25

جانچ کا ماخذ: ⁨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
مہینے
Early withdrawal penalty
3 months of interest
Cash out early after
6 months
APR (stated rate)
4.8889%
Value at maturity
10,500.00

جانچ کا ماخذ: ⁨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
مہینے
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

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

سوالات

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” کتنا درست ہے؟

درستی آپ کی درج کردہ قدروں اور طریقے کے مفروضوں پر منحصر ہے۔ اعشاری حساب 50 بامعنی ہندسے استعمال کرتا ہے، مگر تخمینے، عددی طریقے اور ماخذ کا ڈیٹا کم درست ہو سکتے ہیں؛ دکھائی گئی قدروں کو راؤنڈ کرنے سے یہ حدود ختم نہیں ہوتیں۔ آزاد ذرائع کی حل شدہ مثالوں سے جانچ: 6۔ مثلاً، “⁨Regulation DD example: $1,000 six-month CD, 182 days at 6% compounded daily⁩” کو ⁨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 %)⁩ سے جانچا جاتا ہے۔

اس طریقے کا ماخذ کیا ہے؟

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.

اس کیلکولیٹر کے بارے میں

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}

ماخذ

  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

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