Deduct a fee at checkout then deposit this fee to different Stripe account

Job ID: 38244280

Budget: $50 – $100 USD

I already have website built with PHP and there is Stripe gateway already integrated.
Users can use the website to buy products and at checkout I want to add service fee and then deduct this fee and transfer it different Stripe account.

For example the total the customer should pay is £19.50 + £0.50 fee , I want the 19.50 to go to the payment gateway bank which is already integrated and the 0.50 to go to different Stripe account.

Please see the attached screen shoot as example
Related categories: PHP JavaScript Website Design HTML Stripe