CalcNimbus Blog
Articles, guides, and tips to master your financial, tax, and everyday calculations.
15-Year vs 30-Year Mortgage: Which Saves More?
A 15-year mortgage can save over $200k in interest, but the higher payment isn't for everyone. See a worked $300k example and the smart middle-ground strategy.
FHA vs Conventional vs VA Loan: Which Fits?
FHA, conventional, and VA loans each suit a different buyer. Compare down payments, mortgage insurance, credit-score rules, and who qualifies to find your fit.
How Much House Can I Afford? The 28/36 Rule Explained
Use the 28/36 rule to figure out how much house you can really afford. We walk through a full $90k-income example and the hidden costs lenders ignore.
How to Calculate Your Monthly Mortgage Payment (PITI Explained)
PITI stands for principal, interest, taxes, and insurance — the four parts of your monthly mortgage payment. Here's the formula, a worked $400k example, and how to estimate yours.
Mortgage Points: Should You Buy Down Your Rate?
Mortgage points let you pay cash upfront to lock a lower rate. Here's the break-even formula, a worked $320k example, and exactly when buying points pays off.
Mortgage Recast vs Refinance: Which Lowers Your Payment?
A recast re-amortizes your loan at the same rate after a lump sum; a refinance replaces it with a new loan and rate. Here's a side-by-side example and when each one wins.
Should You Refinance Your Mortgage? Finding Your Break-Even Point
Refinancing can save thousands or quietly cost you more. Here's the simple break-even formula, a worked 2025 example, and the reset-the-clock trap to avoid before you sign.
What Is a HELOC and How Does It Work?
A HELOC turns your home equity into a flexible, revolving line of credit. Here's how the draw and repayment periods work, how the credit limit is set, and the risks.
What Is PMI and How to Avoid It
Private mortgage insurance protects your lender, not you, and it can add hundreds to your monthly payment. Here's what PMI costs, how to cancel it, and four ways to skip it.