Robert A. answered 10/23/25
Experienced Finance Educator Specializing in Excel, Data & Prep Skills
Hi, in general, making a down payment reduces your overall interest cost. So the answer should be the reduction of interest costs results from making a down payment.
You would reduce the total amount borrowed, and the interest rate cost of 6% would be lower in total than if you had borrowed the full amount.
Other ideas to consider is that:
1. yes, you could invest your money and try to make more than 6% but remember you most likely will have to pay taxes so the after tax cost would mean that you would have to achieve a rate Significantly higher than the APR.
2. The only other idea I can consider here is that if you do not have the down payment to invest you would have to accept the interest cost. In that case, you should look up ideas around prepayment.
Most loans do not have prepayment penalties any longer, but even if you borrow the full amount that doesn’t preclude you for paying an extra thousand dollars per month or some amount to decrease the overall principal overtime. Which is also a way of decreasing the overall interest cost
hope that helps you, regards, Robert