Apartment Payment Calculator 500K Mortgage Payment Down Payment Calculator – How much should you put down? – You can show them the results of a mortgage down payment calculator like ours to help make your case. Option 2 is to put less than 20% down to secure a first mortgage on the home itself and use a second loan to finance the difference between your contribution and the 20% mark.Multifamily Mortgage Rates Mortgage Rates Drop, Making Homebuying Less Costly. – Mortgage Rates Drop, Making Homebuying Less Costly March 14, 2019. Mortgage rates declined decisively this week amid various market reports, a strong bond auction and further uncertainty around the Brexit deal, which all contributed to driving bond yields lower.