
LoanQuantum: Mortgage & Loan
Mortgage, Car & Loan Payments
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About
See your real monthly payment before you borrow. LoanQuantum is a free mortgage and loan calculator for US home buyers, car shoppers, students and anyone paying down debt.
MORTGAGE CALCULATOR WITH TAXES, INSURANCE, PMI AND HOA
• Your full monthly payment (PITI): principal and interest, property tax, home insurance, PMI and HOA dues.
• PMI estimated when you put less than 20% down, and the month it ends (78% loan-to-value).
• Extra monthly or yearly payments: see the interest you save and how much sooner you are mortgage-free.
• Amortization schedule year by year and a balance chart.
• Download a PDF report or an Excel schedule to share with a partner or lender.
AUTO LOAN CALCULATOR
• Vehicle price, down payment, trade-in and what you still owe on it (negative equity).
• Your state's sales tax, title and dealer fees, financed or paid at signing.
• Monthly car payment, total interest and the true total cost of the car.
PERSONAL AND STUDENT LOANS
• Personal loan payment by APR and term.
• Student loans with years left in school, grace period, subsidized loans, and what happens to unpaid interest.
REFINANCE CALCULATOR
• New payment, monthly savings and your break-even month after closing costs.
• Interest saved and lifetime savings, with current and new balance side by side.
DEBT PAYOFF PLANNER
• Add credit cards and loans, set one monthly budget.
• Compare the avalanche (highest rate first) and snowball (smallest balance first) methods.
• Your debt-free date, payoff order and interest saved versus paying only the minimums.
COMPARE LOAN OFFERS
• Up to three offers side by side: monthly payment, total interest, total cost and payoff date.
• See which offer really costs the least, even when its payment is higher.
HOW MUCH HOUSE CAN I AFFORD?
• Comfortable and stretch price for a home or car from your income, debts and credit score.
• Debt-to-income and housing ratios explained the way lenders look at them.
QUANTUM COPILOT
• Ask loan questions in plain English and get answers with the numbers worked out.
SAVE AND COME BACK
• Save any calculation to your free account and open it on any device.
Results update as you type or move a slider. Every figure is calculated by the same engine as loanquantum.com, so the app, website and reports always agree.
LoanQuantum provides estimates for educational purposes only. It is not a lender, does not offer loans and does not provide financial advice. Your actual rate, payment and costs depend on the lender and your credit.
Privacy Policy: https://www.loanquantum.com/privacy-policy/
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What's New in LoanQuantum
2.0
November 4, 2026
LoanQuantum 2.0 is a complete redesign for US borrowers: a new mortgage calculator with taxes, insurance, PMI and HOA; auto, personal and student loans; refinance break-even; debt payoff with avalanche vs snowball; loan comparison; affordability; save calculations to your account; PDF and Excel reports; and a faster, cleaner app.
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