Plus per-tx fee 0.15%, when does it actually bite at scale?

Confirm the percentage in the question against your current Plus agreement, payment provider, country and transaction type before using it in a budget. Keep platform transaction fees distinct from payment processing and any currency or other service charges. Then apply the confirmed rate to the transactions that actually qualify, alongside fixed and recurring costs. The question does not establish a universal current fee, a GMV-based licensing formula or the amount your store will pay.

Official references: Shopify current pricing; Third-party payment providers.