Financial Guides & Calculator Tips — page 10
5 of 57 posts
The Rule of 72: When the Mental Shortcut Actually Breaks
The rule of 72 is the back-of-envelope trick for compound growth. Here is how it works, where it stays accurate, and the cases where it quietly misleads.
Compound vs Simple Interest: The Difference in Real Numbers
A plain English guide to compound vs simple interest, with both formulas, a worked example using 10,000 at 7 percent over 20 years, and a free calculator to test your own numbers.
Investing 500 a Month for 30 Years: Realistic Projections
What does 500 a month invested for 30 years actually become? A plain English walkthrough of the math, the assumptions, and what the numbers depend on.
Tax drag on investments: the hidden compounding cost
Tax drag is the quiet erosion of investment returns caused by paying tax along the way rather than at the end. Over decades, the gap can run into hundreds of thousands. This guide breaks down the formula, walks through a worked example, and shows how to model it.
Annual Gift Budget: How to Build One That Holds
Most households underestimate annual gift spending by a wide margin. This guide shows how to size, allocate and protect a gift budget using the calculator, a worked example, and the formula explained in plain English.