To make the process as smooth as possible, so it does not affect your account or delay inspections here is how:

Step 1: First log into your SnapInspect 3 administrator account here

Step 2: Once logged in, on the far left corner of your screen you will see "Company Settings" click this field.

Step 3: You will see multiple available tabs in the middle of your screen, click on "Billings."

Step 4: Click on the "Click Here" button

Step 5: A pop-up window will come up, at this point, you are ready to enter your new payment details.
 
 
 TIP - If you are trying to update your SnapInspect 2 payment details, this will look somewhat different, here is the guide for that process here.