Interest Calculator

Calculate your annual returns from interests

Investment Details

Results

Total Value After Period

₱0.00

Annual Interest Earned₱0.00
Total Earnings₱0.00

Note: These are estimated values. Actual returns may vary based on market conditions and other factors.

Important Information

Types of Interest

  • Simple Interest – calculated only on the original principal amount
  • Compound Interest – calculated on the principal plus accumulated interest
  • Fixed Interest Rate – remains constant throughout the investment or loan term
  • Variable Interest Rate – may change based on market conditions

Simple Interest Formula

  • Interest = Principal × Rate × Time
  • Total Amount = Principal + Interest
  • Rate is usually expressed annually (e.g., 5% per year)
  • Time is typically measured in years

Compound Interest Formula

  • Amount = Principal × (1 + Rate / n) ^ (n × Time)
  • n = number of times interest is compounded per year
  • Common compounding frequencies: annually, quarterly, monthly, daily
  • Compound interest grows faster than simple interest over time

Note: This calculator provides an estimate of earned or payable interest based on the principal amount, interest rate, time period, and compounding frequency. For exact figures, consult your bank or financial institution.

Related Links & Resources

Savings & Investment Guide

Learn how interest helps grow your savings over time

Loan Interest Guide

Understand how interest affects your loan repayments

Amortization Schedule

View a detailed breakdown of principal and interest payments

Frequently Asked Questions

What is interest?▼
Interest is the cost of borrowing money or the reward for saving or investing money. It is usually expressed as a percentage of the principal amount.
What is the difference between simple and compound interest?▼
Simple interest is calculated only on the original principal, while compound interest is calculated on both the principal and previously accumulated interest, leading to faster growth over time.
How often is compound interest calculated?▼
Compound interest can be calculated annually, semi-annually, quarterly, monthly, or daily. The more frequently it is compounded, the higher the total amount earned or paid.
How does interest rate affect total returns?▼
Higher interest rates result in higher total returns (or higher borrowing costs). Even small differences in interest rates can significantly affect long-term investments or loans.
Can I use this calculator for both loans and savings?▼
Yes. This calculator can estimate both the interest earned on savings or investments and the interest payable on loans, depending on the inputs provided.
What factors influence interest calculations?▼
Key factors include the principal amount, interest rate, time period, and compounding frequency. Adjusting any of these variables changes the total interest earned or paid.