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

# How do I preview a discount before customers use it?

> Use the Cart Preview tester to see exactly how a code behaves on a sample cart.

<Note>
  **Must know**

  * Cart Preview reuses the **same apply-and-compute math as checkout**, but in **Live discounts** mode it evaluates all your discounts — codes and automatic rules — regardless of status or date window, drafts, scheduled, and expired ones included. A code that shows as applied here isn't guaranteed to be usable by a real customer yet.
  * Test against a built-in **demo catalog** or switch to your **live discounts** to try your real codes.
  * The preview is a sandbox — nothing you do here charges anyone or uses up a code's capacity.
</Note>

**Cart Preview** lets you drop codes onto a sample cart and watch how they apply before you publish a promotion.

<Steps>
  <Step title="Open Cart Preview">
    Go to **Settings > Financial Setup > Discounts** and switch to the **Cart Preview** view.
  </Step>

  <Step title="Pick a mode">
    Choose **Demo catalog** to test against a ready-made sample cart with example codes, or **Live discounts** to load your discounts — codes and automatic rules, in any status, including drafts, scheduled, deactivated, and expired ones — and try them against the demo cart. Live mode loads all of your discounts, matching what the real checkout evaluates.
  </Step>

  <Step title="Enter a code">
    In the order summary, type a code in the **Enter code** box and click **Apply**. Add as many as you like.
  </Step>

  <Step title="Read the result">
    Each code shows as applied, rejected, or no-match. Discounted lines show a crossed-out original price, the running **Discount** total updates, and recurring codes show a next-billing banner — the same signals a customer sees.
  </Step>
</Steps>

Because it reuses the same discount calculations as checkout, Cart Preview is the fastest way to sanity-check scope, limits, minimums, and caps before a code goes live. Just remember it doesn't enforce status or dates, so confirm a code is active and in its window before counting on it for real customers. If a code doesn't behave the way you expected here, adjust its settings while it's still a draft or scheduled.

**Related:** [How do I create a discount code?](/club/discounts/create-a-discount-code) · [Why didn't a discount code apply at checkout?](/club/discounts/why-a-code-did-not-apply) · [How do customers redeem a promo code at checkout?](/club/discounts/how-customers-redeem-a-promo-code)