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BiggerPockets Money Podcast

Your FIRE Number Is Probably Wrong — Here’s Why

BiggerPockets Money Podcast

BiggerPockets

Business, Education, Investing

4.53K Ratings

🗓️ 8 May 2026

⏱️ 38 minutes

🧾️ Download transcript

Summary

In this episode of the BiggerPockets Money podcast, hosts Mindy Jensen and Scott Trench break down the biggest mistakes people make when calculating their FIRE number and planning for financial independence. Many early retirement calculators rely on simplified assumptions like the 4% rule or current spending levels, but real-life retirement planning is far more complicated. This episode covers how healthcare costs, inflation, one-time expenses, and changing lifestyle spending can dramatically impact your true FI number and long-term retirement success. We also discuss safe withdrawal rates, stress testing your retirement plan flexible income streams, and why many FIRE investors underestimate future spending during early retirement. Whether you’re pursuing FIRE, early retirement, Coast FIRE, or traditional financial independence, this episode will help you build a more realistic retirement strategy and avoid common mistakes that can derail long-term wealth and portfolio sustainability. To go beyond the podcast: Kick start your financial independence journey with our FREE financial resources - https://biggerpocketsmoney.com/ Subscribe on YouTube for even more content- www.youtube.com/biggerpocketsmoney  Connect with us on social media to join the other BiggerPockets Money listeners - https://www.facebook.com/groups/BPMoney We believe financial independence is attainable for anyone no matter when or where you’re starting. Let’s get your financial house in order! Learn more about your ad choices. Visit megaphone.fm/adchoices

Transcript

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0:00.0

Everybody in the FI community has the same question, what is my FI number? But the biggest risk is not

0:06.8

failing to meet your FI number. It's spending 10, 15, 20 years pursuing a FI number that's incorrect.

0:14.9

Today, we are breaking down the six biggest mistakes people make when calculating how much money

0:20.4

they will need in early retirement.

0:23.0

Why the standard internet formulas can be dangerously incomplete and how to build a fire number

0:27.7

that works in real life, not just on a spreadsheet.

0:36.2

Hello, hello, hello, and welcome to the Bigger Pockets Money podcast. My name is Mindy Jensen, and with me as always is my

0:41.9

knows his fine number co-host, Scott Trench. Thanks, Mindy. Great to be here and excited to spend

0:46.6

some time with you talking about this important subject. And yeah, your fine number is one of the

0:50.4

most important things you need to have dialed in to work toward financial independence. And today we're going to be talking about the biggest mistakes that you need to avoid in computing

0:58.1

that number. Mindy, do you want to kick us off with the first one?

1:00.8

Okay, the first mistake is using your current expenses and your current income rather than

1:09.1

your retirement expenses. Scott, if you took your current expenses

1:14.8

and said, well, this is how much I'm going to need in retirement, you are going to have incorrect

1:20.4

numbers because you are paying for child care right now. Are you going to be paying for child care

1:25.9

in five years? Nope. Nope. So that's a number that's

1:29.1

going to go off. If you look at your actual expenses, there's lots of expenses that are going to fall off.

1:35.2

But on the other hand, Scott, might you travel a little bit more when you retire? I hope so.

1:40.0

So then those expenses are going to go up. There are expenses that are going to be very different once you're retired.

1:46.5

So think about what you want your desired retirement to be like if you're going to be traveling a lot.

1:53.5

Or, hey, Scott, do you have any hobbies that you haven't had a chance to do and want to do and might cost money?

1:59.7

These are a lot of questions from me, but yes. I'm throwing them all at you, Scott, but I'm also throwing them at our listeners. First of all, do you even know what your expenses are? Every single expense, because when you think, oh, I spend about $40,000 a year or $60,000 year, let's be more realistic. Are you going to be spending $60,000 in retirement?

...

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