CD Calculator
Enter a deposit and a rate. See what it is worth at maturity, and what an early-withdrawal penalty would take.
Ending balance
$10,450.00
Matures October 2027. Interest earned is $450.00.
- APY
- 4.500%
- APR
- 4.410%
- Interest earned
- $450.00
- Maturity date
- October 2027
- Early-withdrawal penalty
- $110.24
The penalty is about 3 months of simple interest on the deposit, using the nominal APR. A bank rule can differ.
Read how a fixed balance grows before you lock a rate.
Smart Wealth StrategiesShow month-by-month growthHide month-by-month growth
Month-by-month growth
| Month | Date | Interest earned | Balance |
|---|---|---|---|
| 1 | Nov 2026 | $36.75 | $10,036.75 |
| 2 | Dec 2026 | $73.63 | $10,073.63 |
| 3 | Jan 2027 | $110.65 | $10,110.65 |
| 4 | Feb 2027 | $147.80 | $10,147.80 |
| 5 | Mar 2027 | $185.10 | $10,185.10 |
| 6 | Apr 2027 | $222.52 | $10,222.52 |
| 7 | May 2027 | $260.09 | $10,260.09 |
| 8 | Jun 2027 | $297.79 | $10,297.79 |
| 9 | Jul 2027 | $335.64 | $10,335.64 |
| 10 | Aug 2027 | $373.62 | $10,373.62 |
| 11 | Sep 2027 | $411.74 | $10,411.74 |
| 12 | Oct 2027 | $450.00 | $10,450.00 |
How it's calculated
If you enter an APY, the balance after the term is the deposit times one plus that yield, raised to the years in the term. The APR is the nominal rate that compounds to the same APY. If you enter an APR, interest is credited at that rate divided by the number of compounding periods, and the APY is the yield after a full year of that compounding. The early-withdrawal figure is the deposit times the APR, divided by 12, times the months of penalty.
Reviewed by WH2L Digital. Last reviewed October 31, 2026.
Questions
What is the difference between APY and APR?
APY is the yield for a full year after compounding. APR here is the nominal rate before compounding. Enter one, and the other is calculated from how often interest is credited.
How is the early-withdrawal penalty estimated?
The estimate is the deposit times the nominal APR, divided by 12, times the number of months you enter. It is a simple interest penalty, not a quote from a bank.
Does compounding change an APY result?
If you enter an APY, the ending balance follows that annual yield. Compounding still changes the equivalent APR. If you enter an APR, more frequent compounding raises the APY and the ending balance.
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Educational estimates only, not financial advice.