Flat Tax Fee combined with Tax Rate

I can help you set up a combined sales tax, Jennifer.

By adding a custom rate, you can set a combined sales tax. Please know that we're unable to add a flat tax fee in this setup, but you can allocate the sales tax rate for the city and borough.

Here's how:

1. Go to the Taxes menu and then select Sales Tax.
2. Click the Sales Tax Settings.
3. Select Add Rate.
4. Tick the Combined radio button and provide a rate name.
5. Enter city and borough tax rate details in Rate 1 and Rate 2 sections, respectively.
6. Hit Save.

Then if your taxable sales transaction exceeds $1,000, consider overriding them later to enter the flat tax value.

For more information, I recommend checking these articles:

• Set up and track sales tax 
• Sales tax in QuickBooks Online 
• Use custom rate to manually calculates tax on invoices or receipts

Then you can run a customized Sales Tax Liability report later to check how tax amounts show in QuickBooks Online before you file your monthly or quarterly sales tax return.

Please leave a comment if you need more assistance setting up combined taxes. I'll be here to help. Take care always, Jen.