Finance & Investing

How to Use an Inflation Calculator: Protecting Your Purchasing Power

Learn how inflation erodes cash purchasing power over time, how future living costs are calculated, and how to use the Burnjet Inflation Calculator.

Sunny SharmaSunny Sharma
May 8, 2026
7 min read
How to Use an Inflation Calculator: Protecting Your Purchasing Power

How to Use an Inflation Calculator: Protecting Your Purchasing Power

Inflation quietly erodes the real purchasing power of idle cash. An amount that covers household expenses today will buy substantially less 10, 20, or 30 years from now.

You can model the future cost of goods and determine the true purchasing power of your savings using the Burnjet Inflation Calculator.


How Inflation Affects Cash Over Time #

When annualized inflation averages 3.5%3.5%, prices double approximately every 20 years. Holding cash in a non-interest-bearing account guarantees a steady loss of real purchasing power.

Future Cost Formula: #

Future Cost=Present Value×(1+i)t\text{Future Cost} = \text{Present Value} \times (1 + i)^t

Where:

  • Present Value: Cost of the good or expense today
  • ii: Annual inflation rate (in decimal format, e.g., $0.04$ for 4%4%)
  • tt: Number of years into the future

Step-by-Step: Using the Burnjet Inflation Calculator #

Step 1: Open the Tool #

Visit Burnjet Inflation Calculator.

Step 2: Enter Present Amount #

Input your current savings balance or monthly expense amount (e.g., $5,000).

Step 3: Set Annual Inflation Rate #

Enter an estimated inflation rate (e.g., 3.53.5%).

Step 4: Choose Time Horizon #

Select the number of years (e.g., $15$ years).

Step 5: Analyze the Results #

The tool displays:

  • Future Equivalent Cost: What you will need to pay in the future for today's $5,000$ basket of goods.
  • Depreciated Value: What $5,000$ in cash held in a drawer today will be worth in real terms.

Example Calculation #

Suppose your family's annual living expenses are $60,000 today:

  • Annual Inflation: 4.04.0%
  • Time Horizon: $20$ years
Future Annual Cost=60,000×(1+0.04)20131,468\text{Future Annual Cost} = 60,000 \times (1 + 0.04)^{20} \approx 131,468

In 20 years, maintaining the exact same standard of living will require $131,468 per year.


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