If my company is a limited input business do I put 16.5% into the quickbooks FRS settings?

Hello there, ronan.

You'll need to visit this website to verify the correct Flat Rate Scheme (FRS) rate: VAT Notice 733: Flat Rate Scheme for small businesses.

Once you have confirm the rate, I'd be happy to walk you through how to enter it in QuickBooks:

Here's how:

1. From the Taxes on the left menu, click the Set up VAT button.
2. On the Set up VAT page, select the beginning month of your current VAT period.
3. Select your filing frequency.
4. Next, choose your VAT accounting scheme (Standard or Cash).
5. Enter your VAT registration number.
6. Tick the checkbox for Flat Rate Scheme (FRS), if your business is entitled to this.​
7. Click Save.

You can also check out the following articles to be more familiar with FRS and how it works in QuickBooks Online: 

• About Flat Rate Scheme.
• UK Flat Rate Scheme: How does it work?
• Set up and edit VAT settings, VAT codes and VAT rates.

Let me know if you have more questions aside from this, please let me know so I can further help.