10/14/2026
Here's a mistake I see constantly: people run their retirement numbers once.
The closer you get to the finish line, the more aggressively you need to test the math. There's a massive difference between a financial projection and a financial stress test.
A projection is standard industry practice. You plug in your balance, assume a steady 7% market return, factor in inflation, pick a retirement date, and the calculator shows you a straight line of success. That future feels incredibly real simply because it has a precise number attached to it.
A stress test is completely different. A stress test is where you go into your plan and deliberately try to break it. What happens to your score if the market only returns 5% for the next decade? What if inflation runs at 4% instead of 2.5% — a reality we lived through very recently? What if you're forced to retire two years earlier than planned because your health or your industry changes? What if you spend $1,000 a month more than you budgeted?
A bad market in your first five years of retirement does permanent compounding damage that the same market ten years later does not.
Most people never model any of it. They look at a sunny projection, feel a false sense of security, and close the browser. You don't know if your plan works until you've tried to break it.
Run your numbers: https://plan.johnkoyle.com?utm_source=facebook
Book a free 60-minute call: https://calendly.com/koylejohn/30min?utm_source=facebook
⚠️ This post is for educational purposes only and is not personalized tax or investment advice. Please consult a qualified professional.
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