To sync all product data properly, you need to ensure that Zoho understands your WooCommerce Tax configuration. Its important that you have a standard tax rate, if you are not using tax, then ensure the standard rate is 0%.
Zoho Preferences > General
Go now to your Zoho Inventory Preferences > General. There you see the option in how to sell the items:
Do you sell your items at rates inclusive of Tax ?
- Tax inclusive
- Tax exclusive
- Tax inclusive or exclusive > always choose this