How long does it take for a credit card transaction that has been authorized to be posted to your account?

My available credit has been lowered but it still says my current balance is $0. It is a Citi visa card.|||Usually transactions pend in you account as soon as you use your credit card, but depending on what day it is and if the banks are open, it takes a couple of days to post. Before a weekend, the transaction will pend as usual and they will predate it to the date that they are actually posting the transaction. For example-if you made the purchase on Friday 30 May , the transaction will be pending, but it will say next to it 02 June-which is when they will post it. Hope i answered your question|||your current balance means you dont owe a payment at this time. and if your credit has been lowered then you dont have the same amount you once did. if you call the 800 number on the back of your card it will tell you how much available credit you have left.|||transactions usually show up minutes after, but can take up to three days or so to post. Your credit limit going lower would be the credit card company, not the transaction so call them up|||call customer service and they will tell you exactly