This plugin helps admin to add some additional fee to Woocommerce cart. You can add your custom amount and label for the fee to be added in cart. Also can add tax and change tax class if you want. It also provides a feature to apply custom fee only if cart total is greater then minimum amount set.
Interested in contributing to Woo Add Custom Fee?
Head over to the Woo Add Custom Fee GitHub Repository to find out how you can pitch in 😉