CALCMONEY // GUIDES // PAGE 10 OF 14
Blog.
Numbers-first guides on mortgages, taxes, retirement, and net worth. No opinions, no fluff.
How to Calculate PSLF Forgiveness and Whether You Qualify
Most borrowers think PSLF requires exactly 120 payments, but timing those payments wrong can cost you years. The average PSLF recipient saves $66,000, but only 2.8% of applicants actually qualify on their first try.
How to Calculate 529 Plan Growth: Are You Actually on Track for College?
Most parents think $200 monthly into a 529 plan will cover college costs. They're wrong by about $100,000. Here's the math that shows if you're actually saving enough.
How to Calculate Exactly How Much Life Insurance You Need (Stop Guessing)
Most people buy life insurance using random rules of thumb like '10x your salary.' This lazy math costs families hundreds of thousands when they need it most. Here's how to calculate your actual coverage needs.
How to Calculate Estimated Quarterly Taxes Without Getting Crushed by Penalties
Most self-employed people guess at quarterly taxes and pay thousands in penalties. The IRS expects 90% of last year's tax or 100% of current year's liability. Miss by much, and you'll owe interest plus penalties that compound quarterly.
How to Calculate Gross Profit Margin (With Real Examples)
Most business owners calculate gross profit margin wrong and miss profit leaks worth thousands. The simple formula takes 30 seconds but most people skip the hidden costs that kill margins.
How to Calculate Break-Even Point: The Formula 78% of Small Businesses Get Wrong
Most business owners think they know their break-even point. They're usually off by thousands of dollars because they forget hidden costs. Here's the math that actually matters.
How to Calculate Dividend Yield and What It Really Means for Your Portfolio
Most investors chase high dividend yields without understanding they often signal trouble. A 12% yield sounds amazing until you realize the stock price cratered 40% last year. Here's how to calculate dividend yield correctly and spot the red flags.
How to Calculate ROI on a Rental Property Before You Buy
Most investors calculate rental ROI wrong and lose $50,000+ per property. The 1% rule is garbage. Here's the math that actually matters.
How to Calculate Cash-on-Cash Return for Real Estate Investments (The Right Way)
Most investors think a 12% annual return is amazing until they calculate their actual cash-on-cash return and discover they're getting 4.2%. Here's how to measure what really matters: the return on money you actually put in.
How to Calculate Cap Rate on Rental Property (Don't Make This $50,000 Mistake)
Most investors calculate cap rates wrong and lose thousands per year. You're probably including mortgage payments when you shouldn't. Here's the formula that actually matters.
Your $25/Hour Job Actually Pays $14.73 After True Work Costs
That $25/hour wage shrinks to $14.73 when you factor in commuting, work clothes, and taxes. Most people never calculate their true hourly wage and wonder why they feel broke despite decent pay.
How to Calculate Credit Utilization Ratio to Boost Your Score Fast
Most people think 30% credit utilization is good. It's costing them 50+ credit score points. Here's the math that credit card companies don't want you to know.
How to Calculate a 50/30/20 Budget That Actually Works
Most people mess up the 50/30/20 rule by calculating percentages wrong. They use gross income instead of take-home pay and wonder why they're always broke.
How to Calculate Your Emergency Fund Target Amount
Most people guess at their emergency fund target and end up short when disaster strikes. A $50,000 earner needs different coverage than someone making $150,000, yet both often aim for the same generic '6 months' without doing the math.
How to Calculate Your Take-Home Pay After All Taxes
Most people guess their take-home pay wrong by $300+ per month. You're probably calculating federal taxes but missing state, FICA, and local deductions that eat 25-35% of your gross income.
How to Calculate Your Net Worth (And Why Your Number Might Shock You)
Most people calculate net worth wrong and miss $50,000+ in hidden assets. The real formula includes stuff your bank statement doesn't show. Here's how to get your actual number.
The 10 Best Free Financial Calculators in 2026 (Ranked by Usefulness)
The best financial calculators are the ones that give you clear numbers without making you wade through ads or paywalls. Here's the honest category-by-category breakdown.
401k Rollover to IRA Calculator: Direct vs Indirect Rollover, Tax Impact
A direct rollover is $0 in taxes. An indirect rollover triggers 20% mandatory withholding and a 60-day clock. Here's how to do it right and whether you should at all.
Annuity Calculator: Should You Take the Lump Sum or Monthly Payments?
A $500,000 pension lump sum vs $2,800/month for life. Which is worth more? The answer depends on your age, life expectancy, and what you'd do with the lump sum.
Break-Even Calculator: How Many Sales Before Your Business Is Profitable?
A coffee shop with $8,000/month in fixed costs, $4 average ticket, and $1.20 COGS needs to sell 2,353 cups before making a cent. Here's the formula and how to use it.
CD Calculator: Best Certificate of Deposit Rates in 2026 and What You'll Earn
Marcus is paying 5.10% on 12-month CDs. Here's exactly what you'll earn at different deposit amounts, how CDs compare to HYSAs, and when each makes sense.
Child Tax Credit Calculator 2026: How Much You Get and Who Qualifies
The child tax credit is $2,000 per qualifying child under 17, with up to $1,600 refundable. Here's who qualifies, when it phases out, and a real example for a family earning $120,000.
Closing Costs Calculator: What You'll Actually Pay at the Table
Closing costs run 2-5% of the purchase price on top of your down payment. Here's every line item explained, with real numbers on a $400,000 home purchase.
Crypto Tax Calculator: What You'll Actually Owe on Bitcoin and Other Gains
Bought $5,000 of Bitcoin, sold for $18,000. What do you owe? It depends on your income and how long you held. Here's the complete crypto tax guide.
Federal Income Tax Calculator 2026: What You'll Owe (And How to Reduce It)
The 2026 federal tax brackets, a real example of what a married couple with $95,000 AGI actually owes, and the fastest legal ways to lower your bill.
FHA Loan Calculator: Monthly Payment, MIP, and Total Cost vs Conventional
FHA loans let you buy with 3.5% down and a 580 credit score. But mortgage insurance adds real cost. Here's the full comparison against conventional on a $350,000 home.
Home Equity Calculator: How Much Equity Do You Actually Have?
Home equity is the difference between what your home is worth and what you owe. Here's how to calculate it, estimate your current value, and determine how much you can borrow.
IRA Contribution Limits 2026: Traditional, Roth, and Backdoor Explained
The 2026 IRA contribution limit is $7,000 ($8,000 if 50+). But Roth IRA eligibility phases out at certain incomes. Here's everything you need to know including the backdoor Roth.
LLC vs S-Corp Calculator: How Much Tax Do You Save by Electing S-Corp?
On $150,000 net profit, electing S-Corp status saves $9,180 in self-employment taxes. But the math only works above a certain income threshold. Here's the full breakdown.
Mortgage Payoff Calculator: How Much Extra Payments Actually Save You
Adding $200/month to a $350,000 mortgage at 6.75% saves $89,000 in interest and pays it off 6 years early. Here's the full breakdown by extra payment amount.
Options Profit Calculator: How to Calculate Profit and Loss on Calls and Puts
Options profit isn't just about whether the stock moves. It's about how far, how fast, and what you paid. Here's the full P&L math for calls and puts with real examples.
Paycheck Calculator: How Much Will You Actually Take Home?
Your gross salary and your take-home pay are two very different numbers. Here's exactly what gets deducted and how much you'll actually see in your bank account.
Retirement Income Calculator: How Much Monthly Income Will Your Portfolio Generate?
A $1 million portfolio generates $3,333/month at the 4% rule. Here's the full table by portfolio size, withdrawal rate, and how Social Security changes everything.
Savings Account Calculator: How Much Interest Will You Earn in 2026?
The difference between a big-bank savings account and a high-yield account is thousands of dollars over five years. Here's the math on current top APYs.
Stock Return Calculator: How to Calculate Total Return Including Dividends
Price return and total return are very different numbers. Ignoring dividends understates S&P 500 returns by 30-40% over a decade. Here's how to calculate total return correctly.
VA Loan Calculator: The $0 Down Military Benefit Most Veterans Underuse
VA loans require no down payment and no PMI. On a $400,000 home, that's potentially $80,000 you keep in your pocket. Here's the full cost comparison.
When Can I Retire? A Calculator-Based Framework for Any Age
Retirement age isn't fixed at 65. It's a function of your savings rate, current balance, expected returns, and how much you need to spend. Here's the framework.
Charitable Deduction Calculator: How Much Your Donations Actually Save You
Charitable deductions only help if you itemize. At a 32% marginal rate, a $1,000 donation costs you $680. Here's when bunching and donor advised funds make sense.
1099 vs W2 Calculator: How Much More Do You Need to Earn as a Contractor?
To match a $80K W2 job as a 1099 contractor, you need to earn $100K-$110K. Here's the full calculation including taxes, benefits, and how to price your rate.
Net Worth by Age: Where You Should Be in 2026 (And How to Catch Up)
Federal Reserve data shows median net worth is $76K at age 35 and $290K at 55. Here's where you stand, what the benchmarks mean, and how to close the gap.
Money Market vs High-Yield Savings Account Calculator: Which Pays More in 2026
A money market fund at Fidelity yields 4.95% while the best HYSA pays 4.75%. On $50,000, that is $100 per year difference. But money market funds are not FDIC insured. Here is the full comparison.
I-Bond Calculator 2026: Current Rate, Purchase Limits, and When to Redeem
I-Bonds pay a composite rate of 2.86% for bonds purchased in 2026. They are risk-free, inflation-linked, and state-tax-free. The catch: $10,000 annual limit and a 1-year lockup. Here is the complete 2026 guide.
Bond Ladder Calculator: How to Build Predictable Income in Retirement
A 5-year bond ladder with $200,000 generates $40,000 per year in maturing bonds. Completely predictable, no market timing required. Here is how to build one and what it actually pays in 2026.
Portfolio Rebalancing Calculator: When and How to Rebalance Your Investments
A 60/40 portfolio after a strong bull market drifts to 75/25. That extra 15% in stocks means 25% more equity exposure than intended. Rebalancing back costs you short-term but protects the allocation you chose for good reasons.
Long-Term Care Insurance Calculator: Costs, Coverage, and the Self-Insurance Alternative
A private nursing home room costs $108,000/year on average in 2026. A 3-year stay costs $324,000. A couple buying LTC insurance at 55 pays $3,000-$5,000/year each to cover this risk. Here is who needs coverage and who can self-insure.
Medicare Costs Calculator: Premiums, Deductibles, and the IRMAA Surcharge
Medicare Part B in 2026 costs $185/month at the standard rate. But at $200,000 income, the IRMAA surcharge pushes it to $515/month per person. A couple pays $330/month extra because their income was high two years ago.
72(t) SEPP Calculator: Early IRA Withdrawal at Any Age
A 72t distribution plan on a $600,000 IRA at 5% IRS-allowed rate pays $30,000/year starting at age 50. You avoid the 10% early withdrawal penalty. Miss a single payment and the penalty applies retroactively to all distributions.
Solo 401k Calculator: How Self-Employed People Can Save $70,000 Per Year
A solo 401k lets a self-employed person earning $150,000 contribute up to $52,325 in 2026. More than triple what an IRA allows. Here is how the contribution math works and why this is the best retirement account for freelancers.