For that you need to override the price display of the plan, in the plan presentation tab, instead of [AUTOMATIC] you can put the price including taxes.

Taxes management of CBSubs is quite more complex than any other system, and can suit any tax system worldwide, present and future, that's why it's not possible to define price with taxes, and then calculate prices without taxes for invoice. However, adding a feature for a general setting changing the meaning of [AUTOMATIC] to display automatically prices with taxes and to have another [AUTOMATICWITHOUTTAX] substitution is certainly a valid feature request, noted.

#3732

I have added the feature request to the list with priority "high", as there is a workaround provided above. From there on, it's a matter of available time until next release gets into features freeze to come out soon. But there are more releases planed, no worries :-D

I wrote:

> that's why it's not possible to define price with taxes, and then calculate prices without taxes for invoice

Regarding complex tax definitions, e.g.: I have not seen stepped stages for taxes in any other system
E.g. useful for fixed recycling taxes depending on amount