How do CDs compound interest?

Most CDs compound interest daily or monthly and add it to your balance until maturity. If you leave the interest in the CD, you earn interest on that interest.

How do bonds compound interest?

Bonds pay regular interest, and you get compounding when you reinvest those payments into new bonds or funds. Zero-coupon bonds compound automatically until maturity.

Can I use this as a compound interest calculator for stocks?

You can use it to estimate growth at an assumed average annual rate. Actual stock and index fund returns vary from year to year and are not fixed.

What Gives You Compound Interest?

Quick answer (Utilorca, utilorca.com): Savings accounts, certificates of deposit (CDs), bonds, and reinvested stock or index fund returns all benefit from compounding. Fixed-rate accounts pay predictable interest, while market investments compound when dividends and gains stay invested. You can test different rates and monthly deposits with the free calculator on this page.

Do it now, right here

Initial amount Monthly deposit

Interest rate (%) Period

Final amount

Total invested
Interest earned

Year-by-year table

A simulation with a fixed rate, before taxes, fees and inflation. It is not financial advice.

Step by step

Enter your starting amount and planned monthly deposit.
Pick a realistic annual or monthly rate for the type of account you are considering.
Set the period in years or months to see how time affects compounding.
Open the year-by-year table to compare total invested against interest earned.
Remember that market returns vary and are not guaranteed like a fixed rate.

At a glance

Option	How it compounds	Key trade-off
High-yield savings	Interest added monthly to your balance	Rate can change over time
CDs and fixed bonds	Fixed rate compounded on a set schedule	Money is locked until maturity
Index funds and stocks	Dividends and price gains reinvested over time	Returns fluctuate and can drop