Question 1

What is the difference between simple and compound interest?

Accepted Answer

Simple interest is calculated only on the original principal. Compound interest is calculated on the principal plus previously earned interest, growing faster over time.

Question 2

How often is interest compounded?

Accepted Answer

Interest can be compounded daily, monthly, quarterly, or annually. More frequent compounding means more interest earned (or owed).

Question 3

What is APY vs APR?

Accepted Answer

APR (Annual Percentage Rate) is the nominal rate. APY (Annual Percentage Yield) includes compounding and is the true yearly cost or return.

Question 4

How can I use compound interest to grow savings?

Accepted Answer

Start saving early and let compound interest work over time. Even small amounts grow significantly over 20–30 years in a high-yield savings account or investment account.

Month	Payment	Principal	Interest	Balance
1	$188.71	$147.05	$41.67	$9,852.95
2	$188.71	$147.66	$41.05	$9,705.30
3	$188.71	$148.27	$40.44	$9,557.02
4	$188.71	$148.89	$39.82	$9,408.13
5	$188.71	$149.51	$39.20	$9,258.62
6	$188.71	$150.13	$38.58	$9,108.48
7	$188.71	$150.76	$37.95	$8,957.72
8	$188.71	$151.39	$37.32	$8,806.34
9	$188.71	$152.02	$36.69	$8,654.32
10	$188.71	$152.65	$36.06	$8,501.66
11	$188.71	$153.29	$35.42	$8,348.37
12	$188.71	$153.93	$34.78	$8,194.45

Month	Payment	Principal	Interest	Balance
1	$188.71	$147.05	$41.67	$9,852.95
2	$188.71	$147.66	$41.05	$9,705.30
3	$188.71	$148.27	$40.44	$9,557.02
4	$188.71	$148.89	$39.82	$9,408.13
5	$188.71	$149.51	$39.20	$9,258.62
6	$188.71	$150.13	$38.58	$9,108.48
7	$188.71	$150.76	$37.95	$8,957.72
8	$188.71	$151.39	$37.32	$8,806.34
9	$188.71	$152.02	$36.69	$8,654.32
10	$188.71	$152.65	$36.06	$8,501.66
11	$188.71	$153.29	$35.42	$8,348.37
12	$188.71	$153.93	$34.78	$8,194.45

Interest Calculator

Amortization Over Time

Amortization Schedule

Frequently Asked Questions

Amortization Over Time

Amortization Schedule