房子抵押贷款20万3年每月还款金额

假设贷款利率为5.88%，贷款期限为3年，则每个月的还款金额如下：

table

| 期数 | 还款金额 | 其中本金 | 其中利息 | 剩余本金 |

|---|---|---|---|---|

| 1 | 6,344.44 | 5,972.22 | 372.22 | 194,027.78 |

| 2 | 6,344.44 | 6,000.00 | 344.44 | 188,027.78 |

| 3 | 6,344.44 | 6,028.69 | 315.75 | 182,000.00 |

| 4 | 6,344.44 | 6,058.63 | 285.81 | 175,941.37 |

| 5 | 6,344.44 | 6,089.87 | 254.57 | 169,851.50 |

| 6 | 6,344.44 | 6,122.44 | 222.00 | 163,729.06 |

| 7 | 6,344.44 | 6,156.34 | 188.10 | 157,572.72 |

| 8 | 6,344.44 | 6,191.59 | 152.85 | 151,381.13 |

| 9 | 6,344.44 | 6,228.18 | 116.26 | 145,152.95 |

| 10 | 6,344.44 | 6,266.12 | 78.32 | 138,886.83 |

| 11 | 6,344.44 | 6,305.42 | 39.02 | 132,581.41 |

| 12 | 6,344.44 | 6,344.44 | 0.00 | 126,237.00 |

| 13 | 6,344.44 | 6,344.44 | 0.00 | 119,892.56 |

| 14 | 6,344.44 | 6,344.44 | 0.00 | 113,548.12 |

| 15 | 6,344.44 | 6,344.44 | 0.00 | 107,203.68 |

| 16 | 6,344.44 | 6,344.44 | 0.00 | 100,859.24 |

| 17 | 6,344.44 | 6,344.44 | 0.00 | 94,514.80 |

| 18 | 6,344.44 | 6,344.44 | 0.00 | 88,170.36 |

| 19 | 6,344.44 | 6,344.44 | 0.00 | 81,825.92 |

| 20 | 6,344.44 | 6,344.44 | 0.00 | 75,481.48 |

| 21 | 6,344.44 | 6,344.44 | 0.00 | 69,137.04 |

| 22 | 6,344.44 | 6,344.44 | 0.00 | 62,792.60 |

| 23 | 6,344.44 | 6,344.44 | 0.00 | 56,448.16 |

| 24 | 6,344.44 | 6,344.44 | 0.00 | 50,103.72 |

| 25 | 6,344.44 | 6,344.44 | 0.00 | 43,759.28 |

| 26 | 6,344.44 | 6,344.44 | 0.00 | 37,414.84 |

| 27 | 6,344.44 | 6,344.44 | 0.00 | 31,070.40 |

| 28 | 6,344.44 | 6,344.44 | 0.00 | 24,725.96 |

| 29 | 6,344.44 | 6,344.44 | 0.00 | 18,381.52 |

| 30 | 6,344.44 | 6,344.44 | 0.00 | 12,037.08 |

| 31 | 6,344.44 | 6,344.44 | 0.00 | 5,692.64 |

| 32 | 6,344.44 | 5,692.64 | 651.80 | 0.00 |

| 33 | 651.80 | 651.80 | 0.00 | 0.00 |

房子抵押贷款20万3年利息总额

根据上述还款计划，贷款3年的利息总额为：6,968.20元。