Understanding Simple Interest: How a $5,000 Loan Grows to $6,320 in 4 Years at 6% Per Annum

When borrowing money, understanding how interest accrues is essential for managing finances effectively. One common loan structure is simple interest, where interest is calculated only on the original principal amount over time, without compounding. In this article, we’ll explore exactly how much interest accrues on a $5,000 loan over 4 years with a straightforward 6% annual interest rate.


Understanding the Context

What Is Simple Interest?

Simple interest is calculated using the formula:

> Interest = Principal × Rate × Time

Where:

  • Principal = the initial amount borrowed
  • Rate = annual interest rate (in decimal form)
  • Time = number of years

Key Insights

This method is widely used for short-term loans, personal loans, and certain lines of credit, making it easy to understand and calculate.


Applying the Formula to a $5,000 Loan at 6% for 4 Years

Let’s break down the numbers for clarity:

  • Principal (P) = $5,000
  • Annual Interest Rate (r) = 6% = 0.06
  • Time (t) = 4 years

Final Thoughts

Using the simple interest formula:
Interest = P × r × t = 5000 × 0.06 × 4

Calculating step-by-step:

  • 5000 × 0.06 = $300 per year
  • $300 × 4 = $1,200 total interest

Final Balance After 4 Years

The total amount owed after 4 years includes both the principal and the interest:

Total Amount = Principal + Interest = $5,000 + $1,200 = $6,200


Why This Matters: Transparent Borrowing

Understanding simple interest helps borrowers anticipate their total repayment amount. For a $5,000 loan at 6% over 4 years, the total interest paid is $1,200, resulting in a final balance of $6,200. This clarity supports better financial planning and avoids surprises.