If you're a new subscriber to the SHOWTIME streaming service, or a former subscriber restarting a subscription on Showtime anytime/activate, and have been offered a promo code, you will have the option to apply that promo code on the "Enter Payment Info" screen as part of the sign up process. To redeem a promo code during sign up: Visit showtime.com and select the option to start your free trial.Enter your name, credit card information and billing address.Under 'Apply Promo Code,' select the link to enter your promo code.Enter the promo code and click Apply. You will see confirmation that your promo code has been applied to your account.Click 'Start Your Free Trial' to complete your subscription