My discount code isn't working at checkout. What are the first things I should check?

Question

I'm experiencing a frustrating situation where the discount code I created for my online store isn't working during the checkout process. This is causing potential lost sales and customer confusion. I need to quickly diagnose what might be preventing my discount from being applied correctly. The issue could be related to setup, configuration, or technical limitations, and I want a systematic approach to troubleshoot and resolve the problem efficiently.

Muhammed Tüfekyapan · Accepted Answer

Troubleshooting Discount Codes That Don't Work at Checkout
A discount code that doesn't work at checkout is one of the most frustrating customer experiences - and one of the most common support tickets for e-commerce stores. Most failures fall into a small set of diagnosable causes that can be resolved in minutes.

Systematic Troubleshooting Checklist

#CheckWhere to Verify

1Code spelling and case - Shopify codes are case-insensitive but extra spaces cause failuresAsk customer to re-type code manually (not copy-paste)
2Code expiry date - has the end date passed?Shopify Admin - Discounts - find code - check end date
3Usage limit reached - has the maximum number of uses been hit?Check "Times used" vs. "Usage limit" in discount settings
4Minimum purchase not met - is the cart subtotal above the minimum?Check "Minimum purchase amount" setting vs. customer cart total
5Product eligibility - are the cart items in the "Applies to" collection/product list?Check "Applies to" in discount settings vs. customer's cart items
6Automatic discount conflict - is an active automatic discount blocking the code?Check if any automatic discounts are currently active in Discounts tab
7Customer already used it - "one use per customer" limit triggeredCheck if "Limit to one use per customer" is enabled and this customer used it before

Quick Resolution for Customers
If the code genuinely shouldn't have failed (it's a legitimate campaign still running and the customer meets all conditions), you can manually apply the discount by creating an order in Shopify Admin on behalf of the customer with the correct pricing, or by issuing a new unique single-use code directly to that customer.

My discount code isn't working at checkout. What are the first things I should check?

TL;DR - Quick Answer

Complete Expert Analysis

Troubleshooting Discount Codes That Don't Work at Checkout

Systematic Troubleshooting Checklist

Quick Resolution for Customers

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Muhammed Tüfekyapan

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Use Cases

#	Check	Where to Verify
1	Code spelling and case - Shopify codes are case-insensitive but extra spaces cause failures	Ask customer to re-type code manually (not copy-paste)
2	Code expiry date - has the end date passed?	Shopify Admin - Discounts - find code - check end date
3	Usage limit reached - has the maximum number of uses been hit?	Check "Times used" vs. "Usage limit" in discount settings
4	Minimum purchase not met - is the cart subtotal above the minimum?	Check "Minimum purchase amount" setting vs. customer cart total
5	Product eligibility - are the cart items in the "Applies to" collection/product list?	Check "Applies to" in discount settings vs. customer's cart items
6	Automatic discount conflict - is an active automatic discount blocking the code?	Check if any automatic discounts are currently active in Discounts tab
7	Customer already used it - "one use per customer" limit triggered	Check if "Limit to one use per customer" is enabled and this customer used it before