Personal finance, health metrics, taxes, and the math behind everyday decisions — explained without the fluff.
The monthly payment is the number everyone obsesses over. It's also the number that matters least. Depreciation, insurance, fuel, maintenance — the real cost of ownership is 2–3× the sticker price over five years.
The old rules are gone. Nobody agreed on new ones. Here's what 15%, 20%, and 25% actually mean — and when you can say no without feeling like a bad person.
The rule made sense in 2005. It assumed rent was 25% of your income. For most Americans under 40, housing alone now eats 35–45%. The math doesn't work anymore.
It was invented by a mathematician who explicitly said not to use it this way. It can't distinguish muscle from fat. Half the medical community has moved on. The other half uses it because it's fast.
The contractor rate looks better. It often isn't. When you're 1099, you pay both sides of FICA, your own health insurance, and your own retirement. Run the actual math before you jump.
The minimum payment is designed to keep you in debt forever. At 24% APR, paying the minimum turns $10,000 into a 28-year project. Here's the math, and what actually works.
The math is correct. The body doesn't care. TDEE calculators are estimates within a 15–20% margin of error. What you eat matters as much as how much. Here's what the science actually says.
You're not paying 24% on everything. That's not how tax brackets work. Most people in the "24% bracket" have an effective rate closer to 16–18%. Understanding the difference could change how you negotiate salary.
Three systems. Zero agreement. All based on units nobody uses anymore. US, UK, and EU sizing all measure different things with different starting points. Here's how to stop guessing and find what actually fits.
Most people who suspect they're underpaid are right. The data is out there. Here's exactly how to find your market rate, compare it to what you're making, and walk into a conversation with numbers behind you.