---
title: "Auto-Merge Billing"
slug: "auto-merge-billing"
description: "Auto-merge subscriptions with Skio to reduce shipping costs and improve efficiency by combining orders before sending to Shopify."
updated: 2025-12-02T14:47:07Z
published: 2025-12-02T14:47:07Z
canonical: "help.skio.com/auto-merge-billing"
stale: true
---

> ## Documentation Index
> Fetch the complete documentation index at: https://help.skio.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Auto-Merge Billing

## What is auto-Merge Billing?

When enabled, **Skio will automatically merge multiple subscription orders** for the same customer into a single order if they fall within the configured merge window. This occurs **before Skio sends the order data to Shopify**, helping reduce shipping costs and environmental impact where possible.

To qualify for auto-merge, all of the following conditions must be met:

- Both subscriptions are **subscribe-and-save**
- Both ship to the **exact same address**
- Both subscriptions are **active**
- Both use the **same Payment Method**
- **Delivery price** has not been overridden (unless all subscriptions being merged have the same override)
- Neither subscription includes a **dynamic custom box**
- Neither subscriptions is **prepaid**
- Neither subscription has a **shipping discount**

For example, if two orders are to be merged, one set to process on January 1st, and one on January 2nd. The two subscriptions will merge and bill on January 1st.

When orders are merged a Klaviyo trigger `subscriptionAutoMerged` will be sent and the merge is noted in the audit log for the customer.

> [!NOTE]
> **Note**
> 
> Skio automatically merges [order notes](https://help.shopify.com/en/manual/online-store/themes/customizing-themes/common-customizations/add-order-notes) into one order when auto-merging subscriptions.

## How to set up auto-merge billing

1. Go to **Skio > Settings > Billing & Orders** and toggle on **Enable auto-merge billing**.
2. You can also optionally enter a value in **“Merge subscriptions within this many days”** to customize the merge window. By default this is set to **1 day**.

## How do I know when subscriptions have been merged?

You can see a full list of subscriptions that were auto-merged by exporting the audit log and selecting "**Subscription billing auto-merged**". The system will also trigger a Klaviyo flow "**Subscription billing auto merged**".

In **Shopify**, this is how a merged order will appear:

![screenshot-2023-04-27-at-4-42-10-pm.png](https://cdn.us.document360.io/a953bba6-c70d-43ce-bc77-d7f32a8fc514/Images/Documentation/17234393311899.png)

*Shown in image: "autoMergeBillingSubID #"*

Merge Billing is a feature that combines multiple subscription orders for the same customer into a single order to reduce shipping costs and improve efficiency.

Payment Method refers to the various ways customers can pay for their subscriptions, including credit cards.