I am looking to integrate stripe payment button in to my website.
I want to charge total $40 to user, but i want to charge user in 2 installment of $20 at interval of 30 days.
e.g if a user pay now, first $20 charged now and 2nd installment of $20 will be charged after 30 days.
I studied plans and subscription document on stripe website but its for continuous payment at particular interval.
Yes, It's Possible, All you have to do is Save the Card Details.
Reference : https://support.stripe.com/questions/can-i-save-a-card-and-charge-it-later
In Stripe docs there is a guide (or a recipe as they call it) for creating an installment plans which seems like something you need - Creating an Installment Plan
They are using subscriptions and counting number of payments and then cancelling the subscription.