3 articles tagged with checkout
Cart-to-checkout consistency, accelerated checkout, and discount correctness.
The top reason BFCM sales lose money is discounts that show in the cart but fail at checkout. Here is the reliability-first playbook to prevent it.
For years Shopify applied only one product discount per line item. A 2026 platform change lifts that limit with a two-way tag match. Here is what changed, who qualifies, and how to combine product discounts correctly.
Shopify only applies your single highest discount by default. Here is how to stack discounts across product, order, and shipping classes so totals match at checkout.
Cart-to-checkout consistency, accelerated checkout, and discount correctness.
The expensive bugs are the ones where the cart promises a price the checkout does not honour. These posts cover why the two can diverge, how Shop Pay and other accelerated checkouts fit in, and how to test the whole path rather than just the cart.
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