What's a reasonable QA budget or time allocation, as a percentage of total dev time, for checkout testing on a mid-market Shopify Plus store?
Checkout QA is budgeted by test matrix, not as a percentage of development hours. No published benchmark sets a defensible checkout QA share. Capgemini's World Quality Report 2025-26 does not publish one (verified September 2026). Count the combinations you must prove instead: payment methods × discount stacking × tax and duty × customer type × market.
