Percentage off pricing based on customer tag

Hi - I want to show a discounted price before checkout (so everywhere a price is mentioned) for a customer based on their tag in order to allow me to have custom discount teirs. So for example, if a customer has the tag ‘discount10’ then every price they see when logged in shows at 10% off. Am I correct that this cannot be done in shopify’s own discount system as you’d need to apply a code? (I’m not on Shopify plus). And if an app is required, I wndered if anyone had any suggestions= (just really need this simple thing, nothing too fancy on top so seems a shame to be paying for more c

Thanks!

It’s possible to show a discounted price before checkout, but the theme code needs to be changed where a price is shown. Checking if the customer is logged in, if the customer has the tag, then after that recalculating the product price to be displayed, at the percentage it is off.