> ## Documentation Index
> Fetch the complete documentation index at: https://developer.zamp.com/llms.txt
> Use this file to discover all available pages before exploring further.

# FAQs

> Commonly asked questions with the Zamp NetSuite integration

<Accordion title="Does Zamp require all transactions to be calculated via Zamp's tax engine?">
  No. You can designate which customers will have Zamp tax calculations and which will persist your own sales tax calculations on transactions posted to Zamp.
</Accordion>

<Accordion title="What is the Zamp Tax bundle impact on performance?">
  The Zamp Tax bundle will not impact performance in a major way. On average, you can expect to see a 2-3% increase in transaction save time. Larger transactions (60+ lines) may see closer to 4%, but small transactions will not experience any noticeable difference.
</Accordion>

<Accordion title="Why does Zamp Tax Code not appear on my transaction?">
  Under **Set Up Taxes**, ensure the **Per-Line Taxes on Transactions** box is checked.
</Accordion>

<Accordion title="How far in advance can I make Tax Calculations or send transactions to Zamp?">
  The first day of the following month. Any requests to push transactions to Zamp past the first day of the next month will fail with a `400` .
</Accordion>