由于船舶、货物、港口及其它方面的种种原因，使得船方在运输货物时增加费用开支或蒙受经济损失，船方为补偿这些开支或损失，除基本费率外，规定另外收取的费用，就叫附加费（Surcharge或Additional）。附加费种类繁多，而且随着一些情况的改变，会取消或制订新的附加费。以下是一些常见的附加费类别：
燃油附加费（Bunker Surcharge or Bunker Adjustment Factor , 缩写是BAF）
货币贬值附加费（Devaluation Surcharge or Currency Adjustment Factor , 缩写是CAF）
绕航附加费 (Deviation Surcharge)
苏伊士运河附加费 (Suez Canal Surcharge)
转船附加费 (Transhipment Surcharge)
直航附加费 (Direct Additional)
港口附加费 (Port Surcharge)
港口拥挤附加费 (Port Congestion Surcharge)
超重附加费 (Heavy-Lift Additional)
超长附加费 (Long Length Additional)
洗舱费 (Cleaning Charge)
熏蒸费 (Fumigation Charge)
冰冻附加费 (Ice Surcharge)
选择卸货港附加费 (Optional Fees or Optional Additional)
变更卸货港附加费 (Alteration Charge)