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Checkout & Functions

Custom payment, shipping, discount, and validation logic for Shopify Plus merchants who need checkout to match their business rules.

The Problem

Checkout doesn’t match your pricing model. You need tiered discounts, customer-specific pricing, or conditional free shipping but Shopify’s native checkout can’t express your rules.

Payment and shipping logic is too rigid. You need to hide payment methods for certain regions, enforce minimum orders, or split shipments and apps keep breaking.

Validation gaps are costing you. Orders with bad addresses, unsupported SKU combinations, or missing fields slip through and create downstream problems.

What Changes

Checkout That Matches Your Business Logic

We build Shopify Functions and checkout extensions that enforce your pricing, shipping, payment, and validation rules natively without fragile workarounds or third-party apps that break on updates.

Tiered, volume-based, customer-specific, and conditional discount logic.

Custom rate calculation, method filtering, and delivery date logic.

Show, hide, or reorder payment methods based on cart, customer, or region.

Block invalid combinations, enforce minimums, and validate addresses before payment.

Custom fields, banners, upsells, and trust signals embedded in the checkout flow.

Implementation

STEP 01 Feasibility Audit

Feasibility Audit

We assess your checkout requirements against Shopify Plus capabilities.

STEP 02 Function Development

Function Development

We build and test custom Shopify Functions with your real product and order data.

STEP 03 Deploy & Monitor

Deploy & Monitor

We launch, monitor for edge cases, and refine based on real checkout behavior.

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