Retirement Calculator Mr Money Mustache

This retirement calculator follows the principles of Mr. Money Mustache, a popular personal finance blog. It helps you determine how much you need to save each year to achieve financial independence and how much you can withdraw annually in retirement.

Introduction

The Mr. Money Mustache approach to retirement planning focuses on financial independence (FI) rather than traditional retirement. The key principles are:

Save enough to cover your living expenses from passive income
Withdraw 4% annually from your retirement savings
Live below your means in retirement
Invest wisely to grow your savings

This calculator helps you determine your FI number (the amount needed to live comfortably) and your savings rate (how much you need to save each year).

How the Calculator Works

The calculator uses the following formula to determine your FI number:

FI Number = Annual Expenses / 0.04

Where 0.04 is the safe withdrawal rate recommended by Mr. Money Mustache.

Once you have your FI number, you can calculate your savings rate:

Savings Rate = (FI Number - Current Savings) / Years to FI

The calculator assumes you can earn a 7% annual return on your investments, which is a reasonable long-term average return.

Example Calculation

Let's say you have:

Annual expenses: $50,000
Current savings: $100,000
Years to financial independence: 20

Your FI number would be:

$50,000 / 0.04 = $1,250,000

Your required savings rate would be:

($1,250,000 - $100,000) / 20 = $67,500 per year

This means you need to save $67,500 each year to reach your FI number of $1,250,000 in 20 years.

Frequently Asked Questions

What is the 4% withdrawal rate?: The 4% withdrawal rate is based on historical market returns and provides a reasonable balance between growth and withdrawals. It's a common rule of thumb in FI planning.
How does inflation affect my retirement savings?: The calculator assumes your expenses will grow at 2% annually to account for inflation. This is a common assumption in retirement planning.
What if I want to retire earlier or later?: Adjust the "Years to Financial Independence" input to reflect your desired timeline. The calculator will recalculate your required savings rate accordingly.
Can I use this calculator for other countries?: Yes, you can use this calculator for any country. Just enter your annual expenses in your local currency and adjust the assumptions as needed.