Thank for dropping by the Community. I'm here to share information about adding a percentage increase to products in QuickBooks Online (QBO).
To ensure that I'm on the same page, are you referring to the sales price/rate of the products? If so, QBO doesn't have the option to add a percentage increase all at once. You have to do this one at a time.
1. Go to the Gear icon at the top, then pick Products and Services under Lists. 2. Select Edit in the Action column for the product/service that you want to change.
3. Enter the new amount/percentage on the Sales price/rate field. 4. Hit Save and close.
That should help get you on the right track. The following article contains additional information about this: Add Product Information.
Please post again or leave a comment to let me know it goes or if you're referring to something else. I'm always here for further assistance. Have a great day.