Interest Rates Mortgage Calculator 4 Interest Rate Mortgage Cash Out Rates VA Cash Out Refinance Rates, Guidelines and Limits. The VA cash out refinance program is popular with Veterans who want to tap into their home’s equity and maybe even lower their interest rate, too. qualified veterans can use cash proceeds from their refinance to make home upgrades, pay down high-interest credit cards, or take a vacation.Calculate the Daily Interest. Assuming a principal balance of $234,000, the daily interest on our sample loan is $234,000 times 0.00022, which equals $51.48. This is the amount of money you’ll pay in interest each day while your principal is at its current balance. It’ll change to a lower number the next time you make a principal payment.