In 3-9 Unitary Billing, select the Setup button at bottom.
In the Tax District field, remove whatever is listed.
Recalculate the billing again. No message will display.

Resolution for '39 Unitary Billing issue: 'No lines have been designated as taxable amounts.' available: Yes.

The 39 Unitary Billing issue or error code is a known related to Sage Accounting products. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the 39 Unitary Billing issue yourself by looking for a resolution described in the article. If it is a complex 39 Unitary Billing issue or you are unable to solve the issue, you may contact Sage Repair by clicking here or by using other 39 Unitary Billing support options.

For more information about resolving issues related to 39 Unitary Billing in Sage Accounting or to get support for the issue 'No lines have been designated as taxable amounts.', click the link below: