Simple Interest Calculator (Notebook Template)

Compute simple interest (I = P·r·t) and total amount. Good for quick estimates and verification baselines.

finance interest simple
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What this template does

This is a ready-to-run GetCalcMaster Notebook starter. Open it into Notebook, run once with defaults, then tweak inputs and keep your assumptions next to the math.

How to use it (recommended)

  1. Open in Notebook.
  2. Set P (principal), r (annual rate), and t (years).
  3. Compute interest I and total A.
  4. Use this as a baseline to compare against compound interest products.
  5. Save a snapshot with assumptions (rate, time basis, fees).
Tip: When a result matters, verify it twice: a unit check + a second method (graph/estimate).

Preview (first cells)

This preview is for readability. The full template loads into Notebook when you click Open.

TEXT
# Simple Interest Calculator (Notebook)

Formula:

- **I = P × r × t**
- **A = P + I**

Where **r** is a decimal annual rate and **t** is time in years.
MATH
P = 2500
MATH
r = 0.08   # annual rate
MATH
t = 1.5    # years
MATH
I = P * r * t
MATH
A = P + I