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Financial Guides
In-depth explanations for every calculator — real numbers, real scenarios, no filler. 163 guides and counting.
Average Net Worth by Age in the US: 2026 Data — How Do You Stack Up?
US median net worth is $192,084 overall, $39K for under-35s, and $409K at 65–74. Full Federal Reserve SCF breakdown by age group …
Read guide →How a 1% Fee Destroys Your Portfolio Over 30 Years
A 1% annual investment fee can cost you $300,000+ over 30 years. See the exact math on fee drag, which funds to avoid, and how to …
Read guide →HSA Contribution Limits 2026: $4,400 Self-Only, $8,750 Family (IRS Rules)
2026 HSA limits are $4,400 for self-only and $8,750 for family coverage, plus $1,000 if 55+. New for 2026: bronze and catastrophic …
Read guide →Rent vs. Buy at $420,000: The Real Cost Gap in 8 US Cities
Buying a $420,000 home costs about $2,500–$3,570 a month all-in depending on city, versus $1,390–$1,620 for a 1-bedroom rental. …
Read guide →Social Security at 62 vs. 66 vs. 70: Break-Even Age Analysis With Real 2026 Numbers
Claim at 62, 66, or 70? Real dollar break-even math shows exactly when each strategy pays off—and when waiting to 70 costs you …
Read guide →The Hidden Costs of Homeownership in 2026: $15,000+ a Year Nobody Warns You About
Owning a home costs $15,000–$22,000+ per year beyond your mortgage. Here's the full breakdown of taxes, insurance, maintenance, …
Read guide →What Is the FIRE Movement? A Realistic Guide for Normal People in 2026 — With Real Numbers
FIRE means retiring early by saving 25x your expenses and living off investments. Here's what the real timeline math looks like …
Read guide →$25,000 Car Loan: Monthly Payment at Every Interest Rate in 2026
See what a $25,000 car loan costs per month at every rate and term. Real numbers—48, 60, and 72 months—so you can budget before …
Read guide →$50,000 Salary: What You Actually Take Home Depends on Where You Live
A $50,000 salary pays about $42,355 after federal tax and FICA in no-tax states, and roughly $40,250–$40,870 in states like New …
Read guide →How to Pay Off $5,000 in Credit Card Debt in 12 Months or Less
Pay off $5,000 in credit card debt fast using the avalanche or snowball method. See exact monthly targets, interest costs, and a …
Read guide →Personal Loan Rates by Credit Score (2026): What You'll Actually Pay
See exact personal loan APRs by credit score in 2026. Excellent credit gets 7–11%. Bad credit pays 25–36%. Here's what lenders …
Read guide →Lean FIRE vs Fat FIRE vs Barista FIRE: Which Path Fits Your Life in 2026?
Lean FIRE needs ~$1M, Fat FIRE $2.5M+, Barista FIRE splits the difference. Here's the math on all three and which works for your …
Read guide →The 4% Rule Explained: Does a $1M Portfolio Last 30 Years in 2026?
A $1M portfolio at 4% gives $40,000/year before tax. Whether it lasts 30 years depends on sequence of returns, inflation, asset …
Read guide →$100 a Month for 10 Years: How Much You'll Have (2026 Math)
Invest $100/month for 10 years and you'll end up with $15,500–$20,500 depending on returns. Real numbers by account type, return …
Read guide →How Much Do I Need to Retire at 55? 2026 Targets and the 12-Year Bridge
Retiring at 55 usually takes about 26–29× your annual spending, or $1.5M–$1.7M for $60,000 a year. Covers withdrawal rates, the …
Read guide →The Rule of 72: How Long It Actually Takes to Double Your Money
Divide 72 by your annual return and you get the years to double your money. At 6% that's 12 years. At 10%, just 7.2. Full …
Read guide →FHA Loan vs Conventional Loan: 7 Key Differences That Could Save You $40,000 in 2026
FHA loans require 3.5% down and lifetime MIP; conventional loans need 3–20% down but drop PMI at 20% equity. The gap can hit …
Read guide →How Much Should I Have in My 401(k) at 30? 2026 Benchmarks
The common benchmark is 1× your salary by 30 (Fidelity). The median 25–34-year-old in a Vanguard plan has about $16,000. What the …
Read guide →$150K Mortgage Payment: Monthly Cost at Today's Rates (2026)
A $150,000 mortgage costs $1,001/month in principal and interest at today's 7.28% average ($951 at 6.53%). Payment by rate, plus …
Read guide →3% Down on a $420,000 Home: What It Actually Costs You in 2026
Yes, you can buy a $420,000 home with just $12,600 down in 2026. But PMI and closing costs push total cash needed past $21,000. …
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