New: Tax Rate for Invoices

Apply a tax rate to your client invoices.
No more manual calculations! Store multiple tax rates in your account and choose which tax rate to apply to each invoice. 
To get started:
Go to Settings > App Defaults > Tax Rates
 to add a tax rate. 
Apply the tax rate to any invoice in Additional Items > Add Line Item > Taxes
.
Learn more about applying tax here > 