Guides & Articles
Practical, plain-English guides to go with our calculators — 78 articles and counting.
-
Financial Calculators
APR Calculator Guide
Learn to back-calculate a loan's true APR once fees and points are included, so a low advertised rate can't hide a costlier loan.
-
Financial Calculators
FHA Loan Calculator Guide
Why FHA mortgage insurance can outlast conventional PMI, what it really costs over time, and when the lower down payment is still worth it.
-
Financial Calculators
VA Mortgage Calculator Guide
How the VA loan's no-down-payment benefit and one-time funding fee actually trade off, plus the service history rules that determine eligibility.
-
Financial Calculators
Home Equity Loan Calculator Guide
Lump sum, fixed rate, fixed payment: see when a home equity loan beats a HELOC, and when it doesn't.
-
Financial Calculators
HELOC Calculator Guide
Why a HELOC's variable rate can spike your payment when the draw period ends, and how that risk compares to a fixed-rate home equity loan.
-
Financial Calculators
Down Payment Calculator Guide
Should you stretch to 20% down to dodge PMI, or invest the difference instead? A side-by-side dollar example shows when each choice wins.
-
Financial Calculators
Rent vs. Buy Calculator Guide
Why buying usually needs 5+ years to pay off closing costs, and the opportunity cost of parking your down payment in a house instead of the market.
-
Financial Calculators
Payback Period Calculator Guide
Payback period is a fast screening tool, not a verdict. Learn why it ignores value earned after break-even and when to switch to NPV or IRR.
-
Financial Calculators
Present Value Calculator Guide
See how the same $10,000 future payment is worth wildly different amounts today depending on which discount rate you plug in.
-
Financial Calculators
Future Value Calculator Guide
Learn how future value works as present value in reverse, and how to use a single projection to test savings goals, inheritances, or windfalls.
-
Financial Calculators
Commission Calculator Guide
How graduated commission tiers change your payout math, and how a draw against commission actually works when sales are slow.
-
Financial Calculators
Mortgage Calculator UK Guide
Why UK mortgages skip PMI entirely and how Stamp Duty Land Tax bands can add tens of thousands to completion day, with a worked example.