A mortgage loan with a 4% mortgage rate, 30 years term for a house value of $350,000 and a down payment of 20%. The PMT for this mortgage loan is $1,336.76. of this PMT goes the interest, and goes to the pincipal for the first payment. And the loan balance after the first payment is $931.99, $404.77: $279,191.80 $933.33; $404.77: $279,191.80 $933.33, S403.43; $279,596.57 O $403.43; $933.33; $279,596,57