If you are importing goods commercially, you will know that they are subject to duty, goods and services tax (GST), and possibly other charges.
In some cases preferential tariffs may work in your favour when it comes to calculating your duty.
For certain types of goods, you could also apply for a concession, which means there is no need to pay import tariff.
If you submit you own import clearances you will need to know how to calculate your fees and charges correctly. If, on the other hand, you use the services of a customs broker, agent or freight forwarder, they will be well-equipped to work out your charges for you.
Customs can offer you various ways in which to pay any duty you owe. Also, in the event that you end up paying too much, you will find it easy to claim a refund.
Find out here about working out your charges, and the methods of payment that are available.