#Darby-credit-purchase
jaunty fiber
Hi there! Can you explain a little bit more what you mean by that and exactly what you are trying to do?
gritty dock
So in our system we have users with credits, we want to apply this to a transaction. But they still need to taxed for the entire price. Is that a thing?
jaunty fiber
So you want to apply tax on top of the transaction amount?
gritty dock
errr, yes? OK so my user has $100 dollars in credits in my system. And they purchase something for $200. So I only want to charge them $100, and pay the taxes for the entire $200 purchase
jaunty fiber
How are you representing the $100 credits within Stripe? Are you taking that payment up front? Are you using customer balance?
gritty dock
I haven't gotten that far yet? The customer balance probably wont be in Stripe
jaunty fiber
Okay then you would need to calculate this yourself when you create the PaymentIntent to charge your customer.
gritty dock
That sounds right
I just dont know how to set it so that the tax should be on the entire amount, and not the subtotal
jaunty fiber
You likely want some conditional statements when you calculate the amount you want to charge.
gritty dock
sure, can you tell me what fields i should look into?
jaunty fiber
Well not really... you would calculate the amount and then input it into the amount for the PaymentIntent you are creating: https://stripe.com/docs/api/payment_intents/create#create_payment_intent-amount
gritty dock
right, i just dont know how to set the tax for the full amount
jaunty fiber
To clarify... you wouldn't use the Stripe API to calculate amount here. You would write your own code to do so and then send that amount to the Stripe API
I think you are insinuating that you want Stripe to calculate the tax for you?
gritty dock
yeah
is there like a discount field or something? where i say the amount is 200, but there's a discount of 100, but the tax is for the entire 200?
jaunty fiber
Okay so yeah this isn't really how Stripe Tax works... the hacky workaround would be to preview an invoice for the amount that you want to charge tax on in order to see how much tax would be calculated. Then you would create the PaymentIntent based on that preview tax amount. I recommend reading through our docs on Stripe Tax to familiarize with how it works: https://stripe.com/docs/tax
gritty dock
OK
jaunty fiber
Ah yes, you could use coupons if you want to go that route
gritty dock
ty
jaunty fiber
You can add discounts upon Checkout Session creation: https://stripe.com/docs/api/checkout/sessions/create#create_checkout_session-discounts
gritty dock
are discounts applied pre or post tax?
gritty dock
So it looks like i'll have to create a coupon before applying it as a discount?
OK, i can do that
jaunty fiber
Yes or you can provide promo codes
So your customers can enter the coupon themselves
gritty dock
gotcha