Blog
Real math for real decisions. Every post links to the calculator so you can run your own numbers.
June 24, 2026
Is Refinancing My Car Worth It? The 2026 Math Guide
Auto refinancing can save $1,000–$5,000 in interest — or cost you more if you extend the term. Here's how to run the math and decide in under five minutes.
June 23, 2026
Is a Personal Loan Worth It? When to Borrow and When to Wait
A personal loan can save you thousands on high-interest credit card debt or cost you thousands if you use it wrong. Here's the math to know which way it goes for your situation.
June 23, 2026
Is a Credit Card Annual Fee Worth It? The Simple Math Test
Annual fee credit cards can pay for themselves three or four times over — or cost you money if you don't use the right perks. Here's exactly how to calculate which side you're on.
June 21, 2026
How Long Will It Take to Save $20,000? The Answer Depends on These Two Numbers
Calculate exactly how many months to reach any savings goal based on your monthly contribution and interest rate — and see what happens when you change either.
June 21, 2026
How Much Should You Tip in 2026? (And When It's Actually Optional)
Tipping norms have shifted. Here's the current data on what's expected in restaurants, bars, food delivery, and services — with a framework for making your own call.
June 21, 2026
Is Getting an Auto Loan Worth It? The Real Cost of Car Financing in 2026
At 6.9% APR on a $40,000 car, you'll pay $6,000+ in interest on a 60-month loan. Here's how to decide if financing makes sense — and how to minimize what you pay.
June 21, 2026
Is Your Daily Coffee Habit Worth It? The Real Math Behind Your Morning Routine
The average American spends $1,097/year at coffee shops. Use this breakdown to calculate your real annual coffee cost — and decide if it's worth it for you.
June 14, 2026
Contractor vs DIY: How to Calculate When It's Actually Worth Hiring a Pro
Not every home project is a DIY job, and not every contractor quote is worth paying. Here's a practical framework for running the real cost-benefit math before you decide.
June 14, 2026
Is Your Salary Keeping Up With Inflation? A 2026 Reality Check
Inflation hit 4.2% for the 12 months ending May 2026. A 3% raise this year is actually a 1.2% pay cut. Here's how to run the math on what your money is really worth.
June 14, 2026
Should I Buy Crypto in 2026? A Framework for Sizing Your Position Honestly
Bitcoin is trading around $62K–$64K in June 2026. Before you buy, here's how to think about position sizing, volatility tolerance, and what crypto actually is in a portfolio.
June 14, 2026
What Does a Mortgage Actually Cost Per Month in 2026? (The Full Number, Not Just the Rate)
At 6.52%, a $300K mortgage costs $1,908/month in P&I. Add taxes, insurance, and maintenance and the real number is much higher. Here's how to calculate it honestly.
June 10, 2026
The Hidden Cost of Food Delivery Apps
DoorDash and Uber Eats add 40-90% to the cost of a meal once you tally all the fees. Here's what your delivery habit is actually costing you per year.
June 10, 2026
How Inflation Quietly Destroys Your Savings
Inflation doesn't just raise prices, it silently erodes the purchasing power of every dollar you're not investing. Here's the math most people ignore.
June 10, 2026
How Much Does Commuting Actually Cost Per Year?
Most people underestimate commuting costs by 50% or more. Gas is just the start. Here's how to calculate the true annual cost of your commute.
June 10, 2026
How to Tell If an Online Course Is Worth the Price
Online courses range from $29 to $15,000. Here's a practical framework for evaluating ROI before you buy, and the questions most buyers skip.
June 10, 2026
How to Use the 28/36 Rule Before Buying a Home
The 28/36 rule is the clearest debt-to-income guideline in mortgage lending. Here's exactly how it works and what it tells you before you start house-hunting.
June 10, 2026
Is a Gym Membership Worth It If You Go Twice a Week?
Going to the gym twice a week sounds like a bad deal, but the math is more nuanced than the per-visit cost. Here's how to evaluate whether yours pays off.
June 10, 2026
Is Paying Off a Personal Loan Early Worth It?
Early loan payoff saves interest, but it's not always the optimal move. Here's how to calculate whether prepaying beats your alternatives.
June 10, 2026
What a High-Yield Savings Account Actually Earns vs. Inflation
High-yield savings accounts pay 4-5% APY, but inflation runs 3%+. Here's what you're actually earning in real terms, and when HYSAs are the right choice.
June 10, 2026
What Is a HELOC and When Does It Actually Make Sense?
A HELOC gives you access to home equity as a revolving credit line. Here's when it's a smart financial tool, and when it's a trap in disguise.
May 14, 2026
How Much Are You Really Spending on Streaming Services?
The average American household now pays $61/month in streaming subscriptions, and many don't realize it. Here's how to audit your stack and cut what you're not watching.
May 14, 2026
Is a Gym Membership Worth It? How to Calculate Your Real Cost Per Visit
The average gym membership costs $58/month. If you go twice a week, that's $7.25 per visit. If you go twice a month, that's $29. Here's how to decide before you sign.
May 14, 2026
Is Refinancing Worth It? The Real Math Behind the Decision
Refinancing sounds like free money, but closing costs, break-even timelines, and how long you plan to stay make the math complicated. Here's how to decide.
May 14, 2026
Leasing vs. Buying a Car: Which Actually Costs Less?
Leasing has lower monthly payments, but buying builds equity. The right answer depends on how many miles you drive, how long you keep cars, and what you do with the difference.
May 9, 2026
How Much Is Your Credit Card Debt Actually Costing You? (2026 Math)
At 21.5% APR, credit card debt costs more than most people realize. Here's the real math on payoff time, total interest, and how to get out faster.
May 9, 2026
What Is Your Electric Bill Actually Costing You? (2026 State-by-State Breakdown)
The average US electric bill hit $163/month in 2026. Here's what's driving your bill, how your state compares, and what you can actually do about it.
May 9, 2026
Is Your Credit Score Costing You Money Right Now? Here's How to Find Out
The average US credit score is 715, but even 'good' credit costs you thousands on loans, mortgages, and insurance. Here's how to see exactly what yours is costing.
May 9, 2026
What Will Your Loan Actually Cost You? The Full Math on Personal Loans in 2026
The average personal loan rate is 12.27% in 2026. Here's how to calculate your true total cost, three real scenarios, and when a loan is actually worth taking.
May 9, 2026
Should You Rent or Buy a Home in 2026? Here's the Math
Mortgage rates are at 6.23% and home prices remain elevated. Here's an honest breakdown of when buying makes sense, when renting wins, and how to run your own numbers.
May 9, 2026
Are Solar Panels Worth It in 2026? The Real ROI Math
The residential federal solar tax credit expired in 2025. Here's what solar actually costs in 2026, what it saves, and how to calculate whether it still makes sense.