It is currently not possible to display product price with taxes within the minicart list context.

Simulation

1. Add a product that has associated taxes to the cart.
2. Open the minicart and observe the product details.
3. Note that the additional taxes are not displayed, even though they may be present and calculated in the checkout.

Workaround

It is only possible to add the tax amount in the totalizers field.

This is configured adding the option "Tax" to the prop totalizersToShow from the checkout-summary.compact block:

"checkout-summary.compact#minicart": { "children": ["summary-totalizers#minicart"], "props": { "totalizersToShow": ["Items", "Discounts", "Tax"] } }