Cancelling a paypal subscription cancels all future scheduled payments of particular subscription. A subscription can be cancelled up until the day of the next scheduled payment.
Below steps tells you how to cancel an active subscription in your Personal PayPal accounts.
Log in to your PayPal account.
Click the Profile icon next to “Log out.”
Select Preapproved Payments under “Payment settings.”
Select the merchant whose agreement you want to cancel and click Cancel.
Click Cancel Profile to confirm your request.