DynamicZip defines a custom tax schedule as any tax schedule that is not a Zip Code Tax Schedule or Statewide Tax Schedule.

NOTE: As of Build 72 a tax schedule can be flagged to keep the Rate & Boundary Import from deleting the tax schedule and/or to keep the import from adding/removing tax details to/from it. See the DZ Tax Schedule Supplement window for more information.

Custom Tax Details
Frequently Asked Questions
Glossary
Updating manually created tax schedule FAQ