Can I change my product price without it affecting old invoices

Hello there, southachinduin. I'll share some details about changing a product price in QuickBooks Online (QBO).

If you're changing the sales price/rate of a product item, it won't affect your historical transactions like invoices. Follow these steps to proceed:

1. Go to Sales and select Products & services.
2. Find the product or service you want to change.
3. Tap Edit in the Action column.
4. Change the Sales price/rate.
5. Once done, click Save and close.

For more details about this process, refer to this article: Add product and service items to QuickBooks Online.

If you're referring to something else, please provide additional information or screenshots of what you want to change.

Moreover, you'll want to visit this article if you need to change the products and service types: Change product and service item types in QuickBooks Online.

Please don't hesitate to get back on this thread if you have additional concerns about managing your products in QBO. Have a great day ahead!