22 Free Tools — No Signup Required

Mortgage Math for Real Home Budgets

Free mortgage and home-finance calculators with clear assumptions, editable inputs, and educational guides. No signup required for the calculators.

🧮 Mortgage Calculator 🏡 Affordability Calculator ⏳ Rate Time Machine 🔄 Rent vs. Buy 🔁 Refinance Calculator 🎓 Student Loan Payoff 💰 Extra Mortgage Payment
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Why We Built Mortgage Calculator Now

Mortgage decisions involve more than a headline monthly principal-and-interest number. Property taxes, homeowners insurance, mortgage insurance, HOA dues, closing costs, loan term, and interest rate can all change the amount a household actually pays.

MortgageCalculatorNow is built to make those inputs visible. The calculators use standard financial formulas and let you change the assumptions so you can compare scenarios instead of relying on a single generic estimate.

Core calculator inputs are processed in your browser and do not require an account. If you choose to contact us or request a checklist, the information you submit is handled under our Privacy Policy. Our Methodology explains the formulas and assumptions used by the tools, and our Editorial Policy explains how financial claims are sourced and reviewed.

Use the calculators for planning and education, then compare the result with current lender disclosures and property-specific costs before making a borrowing decision.

All 22 Calculators at a Glance

🧮Mortgage Calculator 🏡Affordability 💰Extra Payments 🔄Rent vs Buy 📊DTI Ratio 🔁Refinance 🔒Locked-In Rate ⏳Rate Time Machine 🍹Lifestyle Affordability 🔍True Cost Revealer ⚙️Refi Decision Engine 📄Escrow Impact 📈ARM vs Fixed 🚗Car Loan 💳Personal Loan 📋Closing Costs 🎓Student Loan 🎯DTI + Student Loans 📉Rate Buying Power ⚖️Refinance Breakeven ⏱️Loan Payoff 💸Total Interest

Latest Financial Guides

First-Time Homebuyer Guide: From Budget to Closing

A step-by-step guide to budgeting, down payments, Loan Estimates, property costs, closing costs, and final review before closing.

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How to Get Rid of PMI: Cancellation Paths and Rules

Learn the borrower-requested and automatic cancellation rules that apply to many conventional mortgages, plus how FHA mortgage insurance differs.

Read Full Guide →

House-Poor Risk: A Cash-Flow Framework Beyond Lender Approval

Compare full housing costs with take-home pay, living expenses, savings, and emergency reserves without relying on one universal percentage.

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Escrow Shortages: Why a Mortgage Payment Can Increase

See how changes in property taxes or insurance can create an escrow shortage and affect the monthly payment during recovery.

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Home-Buying Costs Beyond the Down Payment

Plan for appraisal, title and settlement charges, prepaid items, escrow funding, moving costs, repairs, and other early ownership expenses.

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Refinance Break-Even and ROI: What to Compare

Compare closing costs, monthly savings, break-even timing, the new loan term, and the period you expect to keep the mortgage.

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How Student Loans Affect Mortgage Buying Power

See how qualifying student-loan obligations can affect DTI and why the impact depends on the loan program, income, rate, and housing-cost assumptions.

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Mortgage Closing Costs and Cash to Close

Understand lender charges, third-party costs, prepaid items, escrow funding, credits, and how Cash to Close differs from the down payment.

Read Full Guide →

Frequently Asked Questions

How is my monthly mortgage payment calculated?
For a standard fixed-rate amortizing loan, principal and interest are calculated from the loan amount, interest rate, and number of scheduled payments. The total monthly housing payment can also include property taxes, homeowners insurance, and mortgage insurance when applicable. HOA or condo dues are often paid separately. Use property-specific inputs when you have them.
What is PMI and when can I get rid of it?
Private mortgage insurance (PMI) is used on many conventional mortgages when the borrower has a higher loan-to-value ratio. For many mortgages covered by the Homeowners Protection Act, a borrower may request cancellation when the balance reaches 80% of the home's original value if the eligibility conditions are met; automatic termination is generally tied to the scheduled 78% point when the borrower is current. FHA mortgage insurance follows a separate HUD schedule, so its duration should not be treated as the same as conventional PMI. Read the PMI guide →
How do 15-year and 30-year mortgages differ?
A 15-year fixed mortgage generally has a higher required monthly principal-and-interest payment and can produce lower total interest because the balance is repaid faster. A 30-year term generally has a lower required payment and more monthly cash-flow flexibility. Quoted rates can also differ by term, so compare current Loan Estimates rather than assuming a fixed rate spread.
How should I use these calculator results?
The calculators use standard financial formulas and the assumptions you enter to produce educational estimates. Core calculations run in your browser. Actual loan payments and closing figures can differ because of lender terms, points, credits, closing dates, tax assessments, insurance premiums, mortgage-insurance rules, and other property-specific costs. Verify transaction-specific numbers with current lender disclosures and the relevant primary sources.