I am posting an expense of $3000. $1646.64 of this is GST charged at customs. How do I post this?

Hi there, 

Great to have you post in our Community. It's important you post that expense correctly in your books. To make sure the transactions are handled accurately, I recommend reaching out to an accounting professional. If you're not in contact with one, I recommend searching for one on our website using this link here. Let me know if you have other questions. I'm here to assist.