It really depends on the type of loan you request how fast the money can be deposited into your account. Instant is a concept and therefore it is relative. So, if you want to know how fast you can obtain the amount you need read on for some clarification on this issue.
As stated above, there are unsecured loans of all kinds and many loans called instant unsecured loans may be fast cash advance loans but others may offer higher loan amounts and be processed within longer periods of time.
Therefore, approval is not always instant if instant implies a couple of hours. That being said, another question remains unanswered, what kind of amounts can someone obtain almost immediately and what amounts require more time to be approved?