Personal FinanceMay 14, 2026• 5 min read
Compound Interest vs Simple Interest: Which One Actually Earns You More?
# Compound Interest vs Simple Interest: Which One Actually Earns You More?
Simple interest and compound interest are both ways of calculating growth, but they produce dramatically different results over time.
What Is Simple Interest?
Simple interest is calculated only on the original principal.
Formula: I = P x r x t
What Is Compound Interest?
Compound interest is calculated on the principal plus all previously earned interest.
Formula: A = P (1 + r/n)^(nt)
Side-by-Side Example: $10,000 Over 20 Years at 5%
* Simple Interest: $10,000 + ($500 x 20) = $20,000
* Compound Interest: $10,000 x (1.05)^20 = $26,532.98
The compound interest account produces $6,533 more.
Ready to try it yourself?
Use our free Compound Interest vs Simple Interest Calculator to apply what you have learned.
Open Compound Interest vs Simple Interest Calculator →Frequently Asked Questions
For savers, compound interest is better. For borrowers, simple interest is usually better.
No, you must account for the increasing base amount.
Most personal loans use simple interest, while credit cards use compound interest.
You typically need to move funds into a compounding account like an HYSA or investment fund.