Switch from a monthly to a yearly subscription (and vice versa):
When you upgrade your subscription (from a monthly to a yearly subscription), you will be charged for the yearly subscription minus what you already paid for your monthly subscription (pro rata).
When you downgrade your subscription (from a yearly to a monthly subscription), your account will be balanced with the time you didn't use in your yearly subscription.
For example: you take a Freelancer yearly subscription in January (you pay €150) but you change it to a monthly subscription at the end of May (don't forget that the price is different for a yearly (€12,50/month) and a monthly (€15/month) subscription). You used 5 months of your yearly subscription, which means you used €62,50 (5*€12,50) out of €150. So your account will be credited with €87,50 (150-62,50). This amount represents almost 6 months (5,8*€15 = €87) in a monthly subscription, which means you won't pay anything during 6 months.
Switch from one subscription to another:
The calculation is the same as for a switch between a monthly and a yearly subscription: the system calculates how much you already paid for your previous subscription and uses it to fix the amount of your new subscription.
For example, if you upgrade from a Freelancer to a Premium subscription, the system will deduct from the price of the Premium subscription what you already paid (and didn't use) for your Freelancer subscription. If you downgrade from a Premium to a Freelancer subscription, you will get a credit corresponding to the difference between the prices of these two subscriptions (depending on how much time you didn't use in your previous subscription).
