> ## 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.

# Get Production API Access

> Get a production API key for Zamp's sales tax API from your Zamp account — with registrations, filings, and remittance managed by Zamp's tax team.

Production access to the [Zamp sales tax API](/) comes with your Zamp account — the same account where Zamp manages your registrations, filings, and remittance.

## Get your API key

<Steps>
  <Step title="Sign in to your Zamp account">
    Go to [app.zamp.com](https://app.zamp.com) and sign in.
  </Step>

  <Step title="Copy your API key">
    Open the **Integrations** page and copy your API key. If you don't see a key there, your Zamp representative can issue one for you.
  </Step>

  <Step title="Authenticate and build">
    Pass the key as a bearer token in the `Authorization` header — see [Authentication](/guides/authentication) — then follow the [Quickstart](/guides/quickstart) to make your first calculation.
  </Step>
</Steps>

<Warning>
  Production keys carry access to your company's live tax data. Keep them out of client-side code and version control, and rotate a key immediately if you suspect it has been exposed.
</Warning>

## Moving from trial to production

The API is identical in trial and production — same endpoints, same request and response shapes. Swap the key and your integration carries over as-is.

|                   | Free trial                                  | Production                                                    |
| ----------------- | ------------------------------------------- | ------------------------------------------------------------- |
| **API key**       | [Emailed after a short form](/guides/trial) | **Integrations** page on [app.zamp.com](https://app.zamp.com) |
| **Duration**      | 30 days                                     | Ongoing with your account                                     |
| **Registrations** | All 47 remote-seller states, preconfigured  | Your company's actual registration footprint                  |
| **Data**          | Deleted after 30 days                       | Persisted — transactions feed your filings                    |
| **Filing**        | Test only — nothing is filed                | Zamp prepares, files, and remits your returns                 |

## Don't have a Zamp account yet?

A Zamp account is more than an API key. Zamp registers your business where you owe tax, files and remits every return on time, and resolves notices — the managed service trusted by 1,200+ finance and accounting teams, with \$400M+ in sales tax remitted and 150K+ on-time filings. Pricing is scoped to your actual footprint, and API calls are never metered.

<div className="zamp-cta">
  <div className="zamp-cta-copy">
    <p className="zamp-cta-eyebrow">Get started</p>
    <p className="zamp-cta-title">Talk to our team</p>
    <p className="zamp-cta-text">See the API and the managed service on your own use case, and get your account set up.</p>
  </div>

  <a className="zamp-cta-btn" href="https://zamp.com/book-call/">Book a demo →</a>
</div>