Hello @peter0013,
If all of your products have pricing which already includes tax, then please do the following:
– Go to WP Admin → WooCommerce → Settings → Tax
– Set the ‘Prices entered with tax’ setting in to ‘Yes, I will enter prices inclusive of tax’
– Click ‘Save changes’ and refresh your product page.
If your store’s prices are exclusive of tax except for these imported items, you should update your imported products to have pre-tax pricing as well. Your whole catalog should conform to your ‘Prices entered with tax’ setting choice.
You can learn more about basic tax setup in our documentation: https://docs.woocommerce.com/document/setting-up-taxes-in-woocommerce/
If that advice doesn’t help and you still have a problem, please share your Tax settings and your Standard Rates (or whichever tax class rates apply to these products). Also please tell us the price entered on the product, the price shown on the front-end, and the price you expect to see instead.
We look forward to hearing back from you, and if you have any further questions or details please include those in your reply. Thanks!