Scenario Calculator
Mortgage Calculator with Down Payment Options
Your down payment is one of the few mortgage variables you can directly control, and it affects everything: your loan amount, monthly payment, PMI requirement, interest rate, and total cost over the life of the loan. Understanding the trade-offs between a small and large down payment is essential for making the right choice.
Our Mortgage Calculator with Down Payment Options lets you quickly compare scenarios. Enter the home price and adjust the down payment to see how each amount changes your monthly payment, whether PMI applies, and how much total interest you'll pay over the loan term.
The conventional wisdom of "20% down" isn't always the best strategy. While 20% eliminates PMI and gets you the best rate, it may deplete your savings and leave you without an emergency fund. Many financial advisors recommend putting down enough to get a good rate while keeping 3-6 months of expenses in reserve.
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Frequently Asked Questions
Is 20% down always the best choice?
Not necessarily. While 20% down eliminates PMI (saving 0.3%-1.5% of the loan annually) and secures the best interest rate, it may not be optimal if it depletes your emergency fund or prevents you from investing in higher-return assets. Run the numbers: if your PMI costs $150/month but you can invest the extra cash at 8% return, the investment may come out ahead. Use this calculator to compare total costs side by side.
What is the minimum down payment for different loan types?
Conventional loans: 3% minimum (5% for some lenders). FHA loans: 3.5% minimum (10% with credit scores 500-579). VA loans: 0% down for eligible veterans. USDA loans: 0% down for eligible rural properties. Each program has different mortgage insurance requirements and fee structures that affect your total cost.
How does a larger down payment affect my interest rate?
Lenders offer lower rates to borrowers with larger down payments because the loan is less risky. A borrower putting 20% down may get a rate 0.125%-0.5% lower than one putting 5% down. On a $300,000 loan, a 0.25% rate difference saves about $44/month and $16,000 over 30 years. This is on top of the PMI savings from having 20% equity.
Should I use all my savings for a down payment?
Generally no. Financial advisors recommend keeping 3-6 months of living expenses in an emergency fund, separate from your down payment. If you use all your savings for the down payment, any unexpected expense — job loss, medical bill, home repair — could force you into high-interest credit card debt or even foreclosure. It's better to put down less and keep a cash reserve.