How would one write the following officially?
see e.g. LINE dictionary examples:utilities:水电费都包括吗？ 租金含水电费吗, gas: 我去缴纳 煤气费 every month 每月首日支付租金 settled at end: 每年年底结帐 final settlement date 到期日 suggestion as follows:

每月支付煤气水电费２００美元（？）以年底到期日结帐  (to be settled at end of year settlement date)

added 6/3/19: another term for "gas" 燃气费