Looking for an Extension to charge a % fee on the total price

Looking to charge a 2.5% fee (for credit card processing) on the total price. This includes products + shipping + tax. I want to fee to show on checkout so the users can see what the fee is for.

I’ve tried a few actions but haven’t found one that charges the fee on everything. Some do just products. Others don’t do shipping.

I’ve tried MageComp Payment Fees and MagePrince Extra Fee Pro but those do not add the fee on everything. Amasty has one too but it also doesn’t do it on everything.

submitted by /u/ravioliisgood
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