I have similar problem, but I did not understand how to do this. I have prices (with VAT) in woocommerce, working well. I have just recently downloaded WooPOS and took my products from woocommerce in the setup phase.
Now I cannot find a place where to set the settings for setting the tax. I know in “Stores” I can add 24% tax, but that would include another 24% on top of the price. I’d need to show in receipt how much of the total cost is tax. How to do this and thank you in advance.