We want to grant customers fix discount % for only the first year. We are looking into following scenario: 2 Subscriptions, annual billing period, with different start dates, however, co-termed to ensure at renewal the customer gets one invoice. The customer orders a product on 1st of May, the Term start date is on 1st of May, Invoice is generated upon customer acceptance date, which is the 1st of May, billing period is annual, so the subscription will be renewed next year on 1.05.2021. Price per unit is 1200 EUR, discount 10%. For the first year we bill the customer 1080 EUR only. The customer decides to add a new subscription from the 1st of July 2020, I want to have the two subscriptions co-termed, so for the second subscription the Term starts on the 1st of May 2020 as well, however, the subscription is active from July 1st 2020. As the term is aligned to 1st of May 2020 the amount is prorated, the invoice contains only the prorated value for the 10 months -10% discount which is 900 EUR. Next year both subscriptions are renewed on 1st of May 2021, and the customer gets 1 combined invoice. For the first subscription the customer is not eligible for more discount as 1 year has passed, however, for the second subscription we need to deduct a discount for the remaining 2 months (the subscription started July 1st 2020). How can we achieve this?
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