Order Combination Guide

06/12/2026

Applies to:United States

Fulfillment

AI Summary

Saved Shipping Fee by Combining Orders lets eligible TikTok Shop sellers opt into order consolidation: TikTok Shipping/CBT and Seller Shipping sellers get combine recommendations during RTS, while FBT orders combine automatically; GS Direct Shipping is not supported. Enable it in Seller Center > Logistics > Fulfillment and choose free shipping for repeat live-room orders within 3 hours or combined shipping fees for eligible orders within 6 hours. Watch weight/dimensional-weight jumps, since shipping costs can rise sharply, and combined orders can’t be edited after RTS.

TikTok Shop will offer a Saved Shipping Fee by Combining Order features

that sellers may choose to opt in to.

For TikTok Shipping - Standard Delivery and Collection by TikTok (CBT) sellers, and Sellers using Seller Shipping who opt in to Saved Shipping Fee by Combining orders , the system will display a reminder on the Order Management page during shipping, indicating eligible packages that can be combined for delivery. Sellers may then choose to combine or not combine the shipments.

For Fulfilled by TikTok (FBT) sellers who opt in to Saved Shipping Fee by Combining orders , eligible orders will be automatically combined for delivery.

For Global Selling Direct Shipping, this feature is not available to sellers.

Combine option
- Combine orders and provide free shipping : Provide a free shipping offer for a second order to the same buyer who places consecutive orders in the live room. The live room will display information about free shipping to encourage buyers to place more orders.
- Combine orders and charge a combined shipping fee: Incremental shipping fees will only be charged for orders that can be combined with existing orders into one shipment.
- Don't combine orders

How to use this feature?

You can quickly enable this feature in your "Seller Center" account by navigating to:

To enable Combined Shipping:

Navigate to Seller Center > Logistics > Fulfillment > Saved Shipping Fee by Combining orders.
Click the corresponding radio button to customize the settings as needed, then click "Save" to apply the changes.

Combine orders and provide free shipping services:
- This feature will provide the same buyer who places consecutive orders in the live room with a free shipping offer for the second and subsequent orders. The live room will display information about free shipping to encourage buyers to place more orders.
- When a customer places consecutive orders within 3 hours in the same store, the subsequent orders will enjoy free shipping.
- Stores selling lightweight products where combining packages incurs no or very low additional cost. This feature provides an extra buyer-side incentive to encourage repeat purchases.
Auto-combine orders and charge combined shipping fees:
- Incremental shipping fees will only be charged for orders that can be combined with existing orders into one shipment.
- When a customer places consecutive orders within 6 hours in the same store, if the orders meet the combination conditions, shipping will be recalculated as one combined package. The customer only needs to pay the incremental portion of the shipping cost.
- Sellers who face fulfillment-cost pressure but still aim to increase conversion; in live streams, they can mention that the second order receives a shipping-fee reduction.
- Click to view examples and understand the incremental shipping fee mechanism.

Logistics fulfillment

API Sellers

Reference document for API-based order combination shipment integration details here.API sellers who have enabled the feature:

auto_combine_group_id is a unique identifier for orders placed by the same buyer in the live room. Once the seller has enabled this feature in the Seller Center, the identifier will auto-combine orders for shipping.

If multiple orders have the same auto_combine_group_id, it means that these orders can be combined for shipping.
Sellers who have not enabled the feature:

If sellers have not enabled the Auto-Combine, auto_combine_group_id will display as "N/A" (not applicable).

US Shipping by TikTok

Combined orders shipping

For TikTok shipping and CBT, the order combination does not happen automatically, during the RTS process. If there are orders that are eligible for combination based on our combination criteria (same buyer_id, same address_id, same Warehouse_id etc), then in seller center we will provide a combination recommendation and the merchant will have the option to accept or reject the combination recommendation. If accepted, those orders will get combined together and allow merchants to purchase one single label for those orders.

For FBT, eligible orders will be automatically combined for delivery.
For GS Direct Shipping, this feature is not available to sellers.
Once the orders are combined, in the Order Management page there will be a 'combined shipment' tag for those orders

Split shipping of auto-combined orders

Sellers can click to view combined packages, remove certain orders, and then click "Save".
When sellers view the combined order list again, it will only show the orders that were left behind.

Shipping orders of US sellers

Auto-combined orders can be combined with regular orders, and then sellers can edit the tracking number.

You cannot edit combined information after Ready to Ship (RTS)

You cannot edit auto-combining information after completing Ready to Ship.

Notes for weight rules

Key Points

When packages are combined, shipping fees increase with weight tiers (actual / dimensional weight). Adding a lightweight item within 1 lb may only slightly raise costs, but crossing into the next weight tier can result in a significant fee jump.
Example 1: Actual Weight
- One item weighs 0.5 lb. Adding another 0.5 lb item totals 1.0 lb (still within 1 lb) — cost increase is minimal or zero.
- Adding three 0.5 lb items (total 1.5 lb) exceeds the 1 lb threshold and triggers a higher rate in the next tier.
Example 2: Dimensional Weight
- One item measures 10×10×10 inches, actual weight 0.5 lb. If a buyer purchases two, total volume becomes 20×10×10 = 2000 cubic inches (>1728), so rates apply to dimensional weight. Even though actual weight is 1 lb, dimensional weight is 12 lb, leading to a sharp rise in shipping cost.

Our Recommendations

Consider actual and dimensional weight when enabling auto-combine. You may simulate shipping costs using the calculator on the logistics service page before activation.
Clearly explain shipping fee calculation to buyers during live streams to avoid unexpected high costs at checkout.

FAQ

What are the order combination rules for US TikTok Shipping, merchant self-fulfilled orders, TikTok-fulfilled quasi-self-operated orders, and cross-border seller orders?

The countdown begins after the buyers place their first order.

When can I start fulfilling live orders?
- TikTok Shop automatically combines all orders placed in the live room and calculates shipping fees based on the combined order. To optimize efficiency and reduce costs, it is recommended that sellers start fulfilling orders after ending their daily livestreams.
- For sellers with 24-hour livestreams, it is recommended to process and fulfill orders every 6 hours.
How does this feature work for different types of sellers?
- Sellers of 4PL can enable this feature to view combined orders in "Manage Orders", view details of combined packages, un-combine or re-combine packages, and view buyers and print shipping labels.
- Sellers of 3PL can enable this feature to view combined orders in "Manage Orders", view details of combined packages, un-combine or re-combine packages, and confirm shipping.
- Fulfilled by TikTok sellers can enable this feature and the TikTok platform will manage shipping and combining for them.
- Sellers using the desktop platform, open API, or mobile app can also use the Auto-Combine feature.
Can orders placed by buyers through other channels be combined for shipment?
- Free shipping on second order option: Only orders placed in the live room are eligible for this benefit and will be counted (orders from other channels are not supported).
- Extra shipping fee option: Only orders placed in the live room are eligible for this benefit, but orders placed on other channels can also be counted.
Can sellers ship during the livestream?
- Yes, but we recommend waiting until the livestream ends before shipping, as TikTok's fulfillment system determines order combining rules and calculates shipping fees based on orders placed during the livestream. Shipping before the livestream ends may incur additional shipping fees.
Can content creators use the package combining feature?
- No. Content creators cannot combine packages because their livestreams feature multiple sellers/brands.
Will buyers receive benefit notifications?
- Buyers entering a seller's live room (not a creator's live room) with the combined package free shipping feature enabled will receive a notification about this benefit.
Can sellers un-combine packages?
- Yes, sellers can un-combine packages. However, sellers should be aware that un-combining will result in a shipping difference and sellers are responsible for all additional shipping expenses.
What should I do if the orders I want to combine cannot be merged?

Reason	Description	Suggestion
The combined package exceeds the weight limit	The total weight limit is 150lbs.	Check the product weight to ensure multiple items do not exceed the limit.
The combined package exceeds the size limit	Each service has specific size and weight requirements; refer to Shipping Settings → Delivery Settings. Upgrade available TikTok Shipping Upgraded TikTok Shipping	Check product dimensions to ensure multiple items do not exceed the size limit,
Orders are shipped from different warehouses	If the first order is shipped from Warehouse A and the second order from Warehouse B, they cannot be combined.	Ensure that all products sold in the livestream are shipped from the same warehouse.
Buyer selects different fulfillment services	If the first order uses Standard and the second uses Express, they cannot be combined. If the first order uses TikTok Shipping / Seller Shipping and the second uses FBT, they cannot be combined.	Ensure that all products in the livestream belong to the same fulfillment type — either all FBT or all Non-FBT.

What should I do if I think the shipping fee for the second order is high after combination?
- You may check this on the Manage Orders page — if combined, the Combined label will be displayed.
- If orders are confirmed as combined but the shipping fee for the second order remains high, possible causes and solutions are as follows:

Reason	Solution	Reminds
If the delivery distance is long, USPS Priority Mail may be used to ensure on-time delivery when calculating the buyer’s shipping fee.	You can check whether USPS Priority Mail is enabled in Shipping Settings → Delivery Settings. Sellers can decide whether to disable this service if delivery time can still be guaranteed.
The product weight or dimensions you set are large, so combined orders may fall into a higher actual weight or dimensional weight tier, resulting in a significant shipping fee increase.	Estimate shipping fees for different weights using the shipping calculator: Go to Logistics > Logistics Services, click the calculator icon, and open it under the corresponding warehouse tab. Decide whether to use the order combination feature based on the actual weight and dimensional weight of items in typical orders.

Order combination rules

Background

To meet sellers' diverse order consolidation needs, adapt to the rich combination scenarios in LIVE rooms, and further help sellers reduce logistics costs, we have launched the Order Combination Rules. Sellers can set order combination conditions based on their own needs. Only orders that meet the conditions will be combined.

You can set rules across multiple dimensions, including:

Live sessions
Categories
Weight
Size
Number of items per package

NOTE:

Only newly created orders after the rule takes effect will be eligible for consolidation under the configured rules.

All new orders generated during the effective period will be impacted by the rule, so please configure the limits carefully to avoid setting them too strict or too loose.The Order Combination Rule is only used for combination recommendations in Seller Center. If an ERP system has its own order combination logic, the ERP rules will take precedence during fulfillment.

Existing Feature: Saved Shipping Fee by Combining Order

We currently have the Saved Shipping Fee by Combining Order, which you may have used or experienced before.

Where can I configure the Saved Shipping Fee by Combining Order?

Enable Combined Shipping in Seller Center -> Logistics -> Fulfillment -> Saved Shipping Fee by Combining Order

Relationship Between the Two Features

What is the relationship between Order Combination Rules (New Feature) and Saved Shipping Fee by Combining Order?Two separate features that are interconnected and may influence each other. The table below provides an overview of how different combinations of saved shipping fee by combining order options and Order Combination Rules affect shipping fee calculations for shoppers, as well as the consolidation suggestions provided by the system during fulfillment.

Options	Shoppers side	Seller side	Order Combination Rules impact
1. Combine orders and provide free shipping	If a buyer places multiple orders within 3 hours, all orders after the first qualify for free shipping. Free shipping does not apply when only one order is placed within the 3-hour window.	When clicking "Arrange Shipment" the system provides order combination suggestions based on the configured rules and basic rules.	Rules only affect seller-side consolidation suggestions. shopper-side logic is fixed and not impacted by rule configuration.
2. Combine orders and charge a combined shipping fee	When placing orders, if multiple orders are placed within 6 hours, shipping fees are calculated based on the order combination logic. The shoppers will need to pay any additional shipping fee difference if there is a change after consolidation.		Rules affect both shopper-side shipping fee calculation and seller-side consolidation suggestions during fulfillment.
3. Don't combine orders	No special logic applies. Shipping fees are charged per individual parcel.		Rules only affect seller-side consolidation suggestions. shopper-side shipping fee calculation remains standard per-parcel logic.

New Feature: Configure Order Combination Rules

Configure Order Combination Rules

Configure this feature in: Seller Center > Logistics > Fulfillment > Order Combination Rules

What rules can I configure?

Allow cross-channel and cross-LIVE session combination

Rule		Saved Shipping Fee by Combining Order option
	Combine orders and provide free shipping	Combine orders and charge a combined shipping fee	Don't combine orders
Allow cross-channel and cross-LIVE session combination	Sellers can configure whether to combine orders across different cross-channel and cross-LIVE sessions. If you select 'Yes', the system will recommend combining orders from different LIVE sessions into one package. Orders placed through LIVE rooms and other order sources can also be combined. If you select 'No', the system will only recommend combining orders from the same LIVE session.
Examples	If set to 'Yes', the following orders can be combined: Different LIVE sessions Livestream + non-livestream orders Non-livestream + non-livestream orders If set to 'No', the following orders can be combined: Non-livestream + non-livestream orders Orders from the same livestream session

Category restrictions

Rule	Saved Shipping Fee by Combining Order option
Rule	Combine orders and provide free shipping	Combine orders and charge a combined shipping fee	Don't combine orders
Category restrictions	Sellers can create groups by selecting specific categories.Only items belonging to the same group will be combined into one order. A maximum of 5 groups can be set.
Examples	Group 1: Includes all categories except those assigned to other groups by default Group 2: Women’s shirts Group 3: Kitchenware + pen A shopper purchases 2 women’s shirts, 3 kitchenware items, 1 pen, 1 pair of shoes, and 1 hat within 6 hours.Based on the configured grouping rules, the orders should be combined as follows: 1 parcel for the 2 women’s shirts 1 parcel for the 3 kitchenware items and 1 pen 1 parcel for the shoes and hat Shopper side: If a buyer places multiple orders within 3 hours, all orders after the first qualify for free shipping. Free shipping does not apply when only one order is placed within the 3-hour window.Seller side: The system automatically suggests order consolidation based on the configured grouping rules.	Group 1: Includes all categories except those assigned to other groups by default Group 2: Women’s shirts Group 3: Kitchenware + pen A shopper purchases 2 women’s shirts, 3 kitchenware items, 1 pen, 1 pair of shoes, and 1 hat within 6 hours.Based on the configured grouping rules, the orders should be combined as follows: 1 parcel for the 2 women’s shirts 1 parcel for the 3 kitchenware items and 1 pen 1 parcel for the shoes and hat Shopper side: Orders placed within 6 hours may be consolidated based on the configured grouping rules. If consolidation changes the shipping cost, the shopper must pay any additional shipping fee difference. Seller side: The system automatically suggests order consolidation based on the configured grouping rules.	Group 1: Includes all categories except those assigned to other groups by default Group 2: Women’s shirts Group 3: Kitchenware + pen A shopper purchases 2 women’s shirts, 3 kitchenware items, 1 pen, 1 pair of shoes, and 1 hat.Based on the configured grouping rules, the orders should be combined as follows: 1 parcel for the 2 women’s shirts 1 parcel for the 3 kitchenware items and 1 pen 1 parcel for the shoes and hat Shopper side: Shipping fees are charged separately for each parcel. Seller side: The system automatically suggests order consolidation based on the configured grouping rules.

Order item quantity limit

Rule	Saved Shipping Fee by Combining Order option
Rule	Combine orders and provide free shipping	Combine orders and charge a combined shipping fee	Don't combine orders
Order item quantity limit	After the maximum number of items per consolidated order configured by the seller is reached, the next item will automatically start a new consolidation cycle and a new shipping fee calculation. Subsequent items will continue to be evaluated within the new cycle until the item limit is reached again. A maximum of 200 items can be set.
Examples	Assume the maximum number of items is set to 5.Items 1–5 → consolidated under one package ruleItem 6 → The system will not suggest combining Item 6 with Items 1–5.Items 6–10 → consolidated under the next package rule cycleShopper side: If a buyer places multiple orders within 3 hours, all orders after the first qualify for free shipping. Free shipping does not apply when only one order is placed within the 3-hour window.Seller side: The system automatically suggests order consolidation based on the configured grouping rules.	Assume the maximum number of items is set to 5.Items 1–5 → consolidated under one package ruleItem 6 → starts a new shipping fee calculationItems 6–10 → consolidated under the next package rule cycleShopper side: Orders placed within 6 hours may be consolidated based on the configured grouping rules. If consolidation changes the shipping cost, the shopper must pay any additional shipping fee difference. Seller side: The system automatically suggests order consolidation based on the configured grouping rules.	Assume the maximum number of items is set to 5.Items 1–5 → consolidated under one package ruleItem 6 → The system will not suggest combining Item 6 with Items 1–5.Items 6–10 → consolidated under the next package rule cycleShopper side: Shipping fees are charged separately for each parcel. Seller side: The system automatically suggests order consolidation based on the configured grouping rules.

Order weight limit

Rule	Saved Shipping Fee by Combining Order option
Rule	Combine orders and provide free shipping	Combine orders and charge a combined shipping fee	Don't combine orders
Order weight limit	The total weight of the combined parcel is the sum of the weights of each individual order included in the consolidation.Once the total weight reaches either the maximum weight limit configured by the seller or the maximum allowable weight supported by the selected logistics service, the next order will automatically start a new consolidation cycle and a new shipping fee calculation. Subsequent orders will continue to be evaluated within the new cycle until the weight limit is reached again.
Examples	Assume the maximum weight is set to 5 kg. order A (2 kg) + order B (1.5 kg) + order C (1 kg) = 4.5 kg → can still be consolidated Adding order D (1 kg) would increase the total weight to 5.5 kg → order D will not be consolidated into the current package Shopper side: If a buyer places multiple orders within 3 hours, all orders after the first qualify for free shipping. Free shipping does not apply when only one order is placed within the 3-hour window.Seller side: The system automatically suggests order consolidation based on the configured grouping rules.	Assume the maximum weight is set to 5 kg. order A (2 kg) + order B (1.5 kg) + order C (1 kg) = 4.5 kg → can still be consolidated Adding order D (1 kg) would increase the total weight to 5.5 kg → order D will not be consolidated into the current package order D will instead start a new package and begin a new weight calculation cycle Shopper side: Orders placed within 6 hours may be consolidated based on the configured grouping rules. If consolidation changes the shipping cost, the shopper must pay any additional shipping fee difference. Seller side: The system automatically suggests order consolidation based on the configured grouping rules.	Assume the maximum weight is set to 5 kg. order A (2 kg) + order B (1.5 kg) + order C (1 kg) = 4.5 kg → can still be consolidated Adding order D (1 kg) would increase the total weight to 5.5 kg → order D will not be consolidated into the current package Shopper side: Shipping fees are charged per individual parcel.Seller side: The system automatically suggests order consolidation based on the configured grouping rules.

Order size limit

Rule	Saved Shipping Fee by Combining Order option
Rule	Combine orders and provide free shipping	Combine orders and charge a combined shipping fee	Don't combine orders
Order size limit	The total size of the combined parcel is the sum of the size of each individual order included in the consolidation.Once the total dimensions reach either the maximum size limit configured by the seller or the maximum allowable size supported by the selected logistics service, the next order will automatically start a new consolidation cycle and a new shipping fee calculation. Subsequent orders will continue to be evaluated within the new cycle until the size limit is reached again.
Examples	Assume the maximum length is set to 60 cm. Length: order A + order B + order C = 55 cm → can still be consolidated Adding order D would increase the total length to 68 cm → order D will not be consolidated into the current package Shopper side: If a buyer places multiple orders within 3 hours, all orders after the first qualify for free shipping. Free shipping does not apply when only one order is placed within the 3-hour window.Seller side: The system automatically suggests order consolidation based on the configured grouping rules.	Assume the maximum length is set to 60 cm. Length: order A + order B + order C = 55 cm → can still be consolidated Adding order D would increase the total length to 68 cm → order D will not be consolidated into the current package order D will instead start a new package and begin a new size calculation cycle Shopper side: Orders placed within 6 hours may be consolidated based on the configured grouping rules. If consolidation changes the shipping cost, the shopper must pay any additional shipping fee difference. Seller side: The system automatically suggests order consolidation based on the configured grouping rules.	Assume the maximum length is set to 60 cm. Length: order A + order B + order C = 55 cm → can still be consolidated Adding order D would increase the total length to 68 cm → order D will not be consolidated into the current package Shopper side: Shipping fees are charged per individual parcel.Seller side: The system automatically suggests order consolidation based on the configured grouping rules.

The Basic Order Combination Rules (Non-configurable)

After you click “Arrange Shipment”, the system will provide order combination suggestions for orders that meet both your configured order combination rules and the basic rules listed below:

Basic Rules	Description	Screenshots
Maximum combined package weight limit	The total package weight must not exceed the maximum weight requirement of the selected shipping method.
Maximum combined package size limit	The total package size must not exceed the maximum size requirement of the selected shipping method.
Orders shipped from different warehouses	If the first order is shipped from Warehouse A and the second order is shipped from Warehouse B, the orders cannot be combined.
Orders belong to different fulfillment services	- If the first order uses Standard Delivery and the second order uses Expedited Delivery, the orders cannot be combined.- If the first order uses TikTok Shipping / Seller Shipping and the second order uses FBT, the orders cannot be combined.

Verify whether the order combination rules are triggered

When you click "Arrange Shipment" the system will display a pop-up indicating how many orders are eligible for combination and asking whether you want to combine them. If you choose to combine, these orders will be shipped together in a single parcel.

If "order combination" is not configured, or if parcels cannot be combined due to the rules you have set, there will be no combination prompt during shipment.

Please verify whether parcels that fall within your rule scope show the order combination prompt.
Please verify whether parcels outside your rule scope do not show the order combination prompt.