You can change your subscription plan whenever you like and the system will calculate a pro-rated charge or credit for you depending on where you are in your billing cycle and what new plan you select.
- Click on your Account tab.
- Click the My Plan link.
- Select either the Yearly Plan or Monthly Plan tab to see available subscriptions.
- Select your preferred plan.
- Then head to the bottom of that page to confirm your billing details.
- Finally hit the Choose this Plan button.