How to Combine Postage on eBay: Rules, Invoices and Margin (2026)

A buyer adds three of your listings to their basket and asks whether you'll do a better price on postage. If your combined postage rule is set up, eBay has already answered for you at checkout. If it isn't, you're writing invoices by hand and hoping the buyer is still around to pay. This guide shows how to combine postage on eBay: the settings on eBay.co.uk, what changes on eBay.com, and what each option does to the money you keep.

Quick answer: create a combined postage rule in Postage Preferences and apply it to your listings (the fastest way is through the postage policy they share). eBay then lowers the postage automatically when a buyer checks out with more than one of your items. If the buyer asks before paying, send a combined invoice from the Orders tab in Seller Hub. If they have already paid, business sellers can refund the difference with a partial refund. Private sellers on Simple Delivery get postage combined automatically when the buyer pays for everything in one checkout.

• A rule does nothing until it's attached to your listings or to the postage policy they use.
• eBay's own example rule charges £5 for the first item and £2 for each extra one.
• Best Offer purchases, Click & Collect items and most Authenticity Guarantee items are never combined.
• In our worked example below, one parcel instead of three leaves the seller £0.44 better off at a £2 increment and £1.32 worse off at £1. The increment decides it.
• If you dropship from Amazon or AliExpress, each item usually ships on its own, so a combined discount comes straight out of your margin. Ecomli, the eBay dropshipping extension we make, prices AliExpress listings from the exact variant and its delivery cost, so each listing already covers what the supplier charges to send it.

• Every route compared
• Setting an automatic rule
• Applying it across every listing
• Combining after the sale
• Orders eBay won't combine
• What it does to your margin
• Combined postage when you dropship
• Frequently asked questions

How to Combine Postage on eBay: Every Route Compared

eBay gives sellers several ways to combine postage, and each one fires at a different moment. Two work on their own at checkout. The others need you to act, either before the buyer pays or after.

Who each route suits

• A flat rule suits stores selling small, similar goods where a second item barely changes the parcel. It suits stores badly when one extra item can push the parcel into a bigger size band.
• A promotional rule suits sellers who want a visible offer on the listing page to pull in a second purchase. It is a poor fit for stores with bulky or mixed stock, because it overrides every flat and calculated rule you run.
• The combined invoice suits the odd order a rule can't price, such as two awkward items that need a larger box. It doesn't scale, because every invoice waits on you.
• The partial refund suits business sellers who spot a missed combination after the buyer has paid.
• Dropshippers are the exception to all of this. Their items rarely travel in one parcel, so the usual advice to discount extra items can cost them money. The dropshipping section covers what to do instead.

How to Combine Postage on eBay With an Automatic Rule

Rules are created in Postage Preferences, not inside an individual listing. On eBay.co.uk there are two kinds, and they behave differently at checkout.

Flat rate rules

With a flat rule, every buyer pays the same postage and eBay adds or subtracts a set amount for each extra item. eBay's own example is £5 for the first item and £2 for each additional one. The subtract option works from the other end: charge £1 less than the first-item price, so £4, for every extra item.

To create a flat rule:

1. Open Postage Preferences and select Edit beside Combined postage rule.
2. From the dropdown, choose whether to add or subtract an amount for each additional item.
3. Enter the amount.
4. Select Save.

eBay Live sellers see a simpler version. You name the rule, choose Flat cost, set the postage for additional items or pick free postage, and can add a Max. postage cost under the optional settings. The subtract option isn't offered for new flat rules on eBay Live.

Promotional rules

A promotional rule sets a condition instead of an increment. eBay's examples are a cap of £5 on postage when the buyer buys more than one item, and free postage when they spend more than £25. Buyers see these offers highlighted on your listings.

Promotional rules have a wide reach. One applies to every listing that carries a combined postage discount, and it overrides any flat or calculated rule you already have running. If a flat rule seems to have stopped working, check whether a promotional rule is winning. To set one up, select Edit beside Promotional postage rule in Postage Preferences, fill in the conditions and save. Promotional rules don't apply to items in an eBay Live event, apart from the Max. postage cost setting on a flat rule.

The same settings on eBay.com

US sellers find identical tools under Shipping Preferences, where they are called combined shipping rules. eBay.com also offers calculated shipping rules that merge item weights into one package. eBay's example bills three 4 lb items as a single 12 lb package, with an option to deduct a set weight from the total. Our separate guide to eBay combined shipping covers the US version with dollar figures, and eBay documents it in its shipping discounts help page.

Apply the rule, or nothing happens

Saving a rule changes nothing at checkout. eBay applies a discount only to listings the rule is attached to. On a single listing, go to the Postage section, select Flat or Calculated, then pick the rule from the Combined Postage dropdown.

If you work with postage rules instead of business policies, the postage services on the items also have to match before eBay will combine them. Policies handle that matching automatically, which is the strongest reason to use them.

Apply Your Postage Rule Across Every Listing

A rule attached to a handful of listings in a large store barely moves the numbers. There are three ways to spread it, from slowest to most durable.

• One listing at a time. On your Active listings page, select Revise, go to the Postage section and apply the rule. Fine for a dozen items, unworkable past that.
• Bulk edit. In Seller Hub, open Listings, switch to the focused edit view, select Bulk edit, then Domestic postage, then your combined postage rule.
• Business policies. Open your business policies, select the postage policy, check the rules you want under Combined postage discounts and save. Every listing on that policy gets the discount, including the ones you list next month.

The policy route is the only one that stays correct as the store grows. If you have a pile of near-identical postage setups, merge them into a few policies first and then attach the rule once. Our eBay business policies setup guide walks through creating them, and the eBay shipping policy guide covers the postage side in detail. Listing templates follow the same logic: put the rule on the postage policy first, then pick that policy in Seller Hub under Listings and Listing templates.

If you list in bulk with a tool, check where the postage policy on new listings comes from. Ecomli's Create Listings fills eBay's own listing form in your signed-in seller session and confirms each listing, up to 10 at a time, so your combined postage rule stays an eBay setting on your postage policy. After each batch, open a few of the new listings in Seller Hub and confirm they sit on the policy that carries the rule. A quick spot check catches a wrong policy before it costs you a month of undiscounted multi-item orders.

How to Combine Postage Costs on eBay After the Buyer Has Bought

Sometimes the rule can't help. The buyer has already selected Request total from seller in their basket, or the items are so different in size that your standard increment would leave you out of pocket. The manual routes handle these cases, and eBay's guide to offering combined postage covers each one.

Before the buyer pays: send a combined invoice

A buyer who hasn't already had a postage discount can select Request total from seller, and you reply with an invoice showing the new combined cost. First make sure combined invoices are switched on. On the Postage Preferences page, select Edit beside Allow combined payments and postage, choose the time period you're willing to combine purchases across, and save.

Then send the invoice from Seller Hub:

1. Go to the Orders tab.
2. Check the box beside each order that needs combining.
3. Select Send Invoice for any of the selected orders.

From My eBay the flow is similar: open Orders, select the items, add the new postage charge and choose Send Invoice from the Actions menu.

After the buyer pays: partial refund

Business sellers can still give the discount after payment by sending a partial refund from the Orders tab in Seller Hub or from My eBay Orders. Post everything in one parcel, create the label from one of the orders and upload that tracking number for all the items in the combined order. You keep the label saving, and the buyer gets the difference back a little later than they would have at checkout.

Private sellers on Simple Delivery

Simple Delivery is the only delivery method for private sellers listing eligible items on eBay.co.uk, and it handles combining for you. When a buyer pays for several of your Simple Delivery items in one checkout, postage is combined automatically. When they check out separately, you'll see a notification as you get your prepaid label. Confirm that you want to post the items together and eBay issues one prepaid label for the combined orders.

The orders have to be sold to the same buyer, go to the same address and use the same postage option, and everything has to fit in one package within Simple Delivery's size limits. In Seller Hub and My eBay Orders, the status filter for paid orders waiting to ship shows a timer beside each order, counting down how long the buyer has left to buy another item and still get combined postage. Items you don't combine should go on their own Simple Delivery labels so you stay protected.

The eBay.com version

On eBay.com the buyer's button is Request combined shipping, and the seller setting is Allow invoice requests, where you set Requests allowed to Yes and choose a time period. eBay says buyers can't request combined shipping from the cart when the items are discounted, when free shipping is already offered, or when the listing requires immediate payment. US sellers packing several paid orders into one box can buy a single label through the Bulk Shipping Tool, as eBay's offering combined shipping page explains.

Speed matters more than the method. An invoice is only useful if it reaches the buyer while they still want to buy, so your reply time and your eBay handling time are part of the same problem. Merging two orders on Tuesday for a buyer who checked out on Sunday helps nobody.

Orders eBay Won't Combine

Some orders always go separately, and the buyer pays postage on each item whatever rule you've set. On eBay.co.uk the list is short:

• Click & Collect items.
• Most items that need Authenticity Guarantee checks. The exception is a multiple-quantity purchase of the same fashion item or trainers.
• Items bought with Best Offer.

eBay.com adds items in the PSA Vault, items listed with local pickup and eBay International Shipping items in specific categories, and it doesn't apply shipping discounts to Authenticity Guarantee listings. eBay Live has its own window. Items qualify only when they are bought during the event's shopping window, which runs from the event start to 8 hours after it, are marked as paid and waiting to ship, and share the same postage policy or combined rule. If you post early and the buyer then buys more, the full order won't be combined.

Knowing these exceptions in advance saves an afternoon of troubleshooting a rule that was working all along.

What Combined Postage Does to Your Margin

Setup guides tend to stop at the settings. The money question is whether one parcel at a discount beats three parcels at full postage. Here is a worked example for a UK business seller selling three T-shirts at £12 each in Clothes, Shoes & Accessories.

For that category, eBay's fees for business sellers page charges a final value fee of 11.9% of the total sale, which includes postage, plus £0.40 per order over £10, plus a 0.35% regulatory operating fee. One T-shirt goes as a Royal Mail Tracked 48 Large Letter at £2.85 bought online. Three go as a Small Parcel at £3.65 online.

At eBay's example increment of £2, the buyer saves £6.00 and you keep £0.44 more than on three separate orders. At £1, the buyer saves £8.00 and you keep £1.32 less. In this example the break-even point is about £1.75 per extra item.

Two savings pay for the discount. You buy one label instead of three, and you pay one per-order fee instead of three. The final value fee on the lower postage falls too, but only by about 12p in every pound of discount, so the label saving does most of the work.

Treat the table as a template. It leaves out VAT on eBay's fees (eBay lists business fees excluding VAT), packaging and the cost of the stock, and your category rate and label service will move the break-even point. UK-based private sellers pay no final value fee or regulatory operating fee, according to eBay's fees for private sellers, so for them the whole saving is the label. Our walkthrough on how to calculate eBay fees has the formula, eBay selling fees explained covers what each line is, and the guide to eBay business account fees in the UK covers shop subscriptions.

How to set your increment

Work backwards from your real label prices instead of copying a round number. Take the cost of the heaviest realistic two-item parcel, subtract the single-item label, and treat that difference as the floor for each extra item. Then check that the extra item doesn't push the parcel into the next size band. A £1 increment that works for two T-shirts can lose money on two pairs of boots.

The example also assumes the buyer would have bought three items anyway, which is the worst case for a discount. The point of combined postage is the second or third item a buyer adds because the postage on it is cheap. If the discount wins you that extra item, even a thin increment can pay.

Combined Postage When You Dropship From Amazon or AliExpress

Everything above assumes you pack the parcel. Dropshippers don't. When a buyer orders three items from a dropshipped store, the supplier usually sends three separate packages, and you pay three delivery costs whatever you charged the buyer. A combined discount on those listings is money off with no label saving behind it.

That changes the setup:

• Build the supplier's delivery cost into each item price, so every listing carries its own postage.
• Keep supplier-shipped listings on a postage policy without a combined discount, or set the increment to the full per-item delivery cost.
• Attach a discount only to items that really travel together, such as stock you hold yourself, or several units of one product when your supplier confirms they ship in one package.

How to do this in Ecomli

Ecomli is a non-API browser extension for eBay dropshippers. It works through the eBay seller account already signed in to your desktop Chrome browser, so there is no API connection to authorize. Your combined postage rule stays in eBay, and Ecomli handles the listing price, the supplier checks and the order record around it.

1. Price delivery into each listing. In Create Listings, paste Amazon or AliExpress links (or send picks from Product Hunting) and set your markup. AliExpress products are priced from the exact variant and its delivery cost, so each listing's price already covers what the supplier charges to send that item.
2. Keep supplier-shipped listings off the discount. Use Seller Hub's bulk edit or your business policies to put those listings on a postage policy with no combined discount, then spot-check a few new listings after each batch.
3. Let Stock Monitoring hold the margin. Stock Monitoring checks the Amazon or AliExpress supplier behind each Ecomli listing and updates the eBay price with your markup when the supplier price moves, or sets the quantity to 0 or ends the listing when stock runs out. A multi-item order spreads your margin across several products, so an unnoticed supplier price rise costs more.
4. Link each supplier order to the sale. A three-item eBay order becomes several supplier orders. With your supplier buying account signed in, Ecomli matches supplier orders placed after the eBay sale to that sale by item and delivery address, and asks you to pick when more than one could fit. Tracking Conversions then converts supported AliExpress and Amazon TBA tracking into eBay-compatible tracking so the buyer can follow the delivery from their eBay order.
5. Check the profit on multi-item orders. The Overview dashboard shows eBay sales, fees, Promoted Listings costs, refunds, supplier costs and recorded profit by day or period. Profit is only as complete as the supplier costs you record, so record them for every supplier order and you'll see whether your postage setup is paying.

Stock Monitoring, Tracking Conversions and the Overview dashboard come with every plan, and you can compare Starter, Pro and Scale to see which monthly import allowance fits your store.

For the wider margin picture, see whether eBay dropshipping is profitable after fees and how to configure a repricer to defend margin. The automation overview on our homepage shows how listing and monitoring fit together.

Combined Postage on eBay: Frequently Asked Questions

Why can't I combine shipping on eBay?

The usual cause is a rule that exists but isn't applied to the listings, either directly or through their postage policy. If you use postage rules instead of policies, the postage services on the items must also match. Some orders are never combined: on eBay.co.uk that means Best Offer purchases, Click & Collect items and most Authenticity Guarantee items. On eBay.com, buyers can't request combined shipping from the cart when the items are discounted, free shipping is already offered, or the listing requires immediate payment.

How does a seller do combined shipping on eBay?

Create a combined postage rule in Postage Preferences (eBay.com calls the page Shipping Preferences), then apply it to your listings, ideally through the postage policy they share. eBay then lowers the postage automatically at checkout when a buyer buys more than one of your items. For requests the rule doesn't cover, switch on combined invoices and send a combined invoice from the Orders tab before the buyer pays.

How do I combine two orders from the same buyer on eBay?

If the buyer hasn't paid, select both orders in the Orders tab of Seller Hub, add the new postage charge and select Send Invoice. If they paid separately, post the items together: create the label from one order and upload that tracking number for every item in the combined order. As a business seller you can then refund the postage difference with a partial refund. Private sellers on Simple Delivery can confirm posting together when they get the prepaid label, as long as the orders go to the same buyer and address with the same postage option.

How do I combine postage after the buyer has paid?

Business sellers send a partial refund for the postage difference from the Orders tab in Seller Hub or from My eBay Orders, then post everything in one parcel. You keep the label saving and the buyer gets the discount back as a refund. Private sellers on Simple Delivery combine at the prepaid label step instead.

Why isn't my combined postage discount showing at checkout?

Start with whether the rule is applied to the listing or to its postage policy. If you use rules instead of policies, confirm the postage services on the items match. Finally, look for a promotional rule, which overrides flat and calculated rules. Attaching the rule to one shared postage policy fixes the first two problems at once.

How much should I charge for each additional item?

Work back from your label prices. Take the cost of a realistic two-item parcel, subtract the single-item label, and charge at least that difference for each extra item. In our worked example the break-even increment was about £1.75 per extra item, because one Small Parcel at £3.65 replaced three Large Letters at £2.85 each and two per-order fees disappeared.

Does combined postage work if items ship from different suppliers?

The discount still applies at checkout, but the items won't share a parcel. A combined postage discount assumes one package, so items from two suppliers mean two delivery costs while the buyer pays for roughly one. Scope discounts to items that genuinely travel together, and keep supplier-shipped listings on a postage policy without a combined discount. Ecomli maps every listing it creates or migrates to its Amazon or AliExpress supplier, which makes it easy to see which items share a source.

Combined postage is one of the few settings that can lower the buyer's bill and raise your take on the same order, as long as the increment covers the extra weight. Bigger baskets also build the sales history that helps you grow your eBay selling limits. If the parcel side is what slows you down, our roundup of eBay shipping software for UK sellers covers the label tools that pair with a combined postage setup, and our guide to eBay listing promotions covers running offers without giving away margin twice.

Ready to run this on your own eBay store? Get started with Ecomli → Plans from $29/month · First Sale Guarantee · cancel any time.

Sources

• eBay UK Help: Postage discounts
• eBay UK Help: Offering combined postage
• eBay UK Help: Simple Delivery
• eBay UK Help: Fees for business sellers (last updated 4 August 2026)
• eBay UK Help: Fees for private sellers
• eBay US Help: Shipping discounts
• eBay US Help: Offering combined shipping
• Royal Mail: Tracked 48 prices