Down Payments: How Much Is Enough?

A down payment is the upfront cash you pay toward a home's purchase price, with the rest covered by the mortgage loan. The bigger the down payment, the smaller the loan — which sounds simple, but the actual trade-offs go well beyond just the size of the monthly payment.

A larger down payment means borrowing less, which lowers the monthly payment, reduces the total interest paid over the life of the loan, and can sometimes unlock better loan terms. The trade-off is that the cash goes into an illiquid asset — one that can't easily be turned back into cash — instead of staying available for emergencies, other goals, or investing elsewhere.

Here's what that trade-off can look like on a $300,000 home financed at a fixed 6% rate over 30 years, comparing a 20% down payment to a much smaller 5% down payment.

Home price: $300,000 | Rate: 6% fixed | Term: 30 years

20% down ($60,000) → Loan $240,000 → Payment ≈ $1,438.92/mo
5% down ($15,000)  → Loan $285,000 → Payment ≈ $1,708.72/mo

Over the full 30-year term, the smaller down payment path
costs roughly $52,000 more in total interest — on top of the
$45,000 difference in how much was actually borrowed.

A larger down payment reduces the size of the loan, which lowers both the monthly payment and the total ____ paid over the life of the loan.

There's no single down payment percentage that's enough for everyone — required minimums vary a lot by loan type, lender, and location, and the right amount also depends on how much cash reserve someone wants to keep on hand for emergencies and other costs of owning covered in earlier lessons. Putting down every available dollar can leave someone dangerously short on cash the moment something breaks.

What is a real trade-off of putting down as large a down payment as possible?

There is one universally correct down payment percentage that applies to every buyer, loan type, and situation.