How to Sell on Amazon and Shopify at the Same Time?

Quick Summary: You can sell on Amazon and Shopify at the same time by linking both stores to a smart stock tracker. This setup keeps your product counts correct so you do not sell things you run out of. It helps you reach Amazon shoppers while building your own Shopify shop at the same time.

What You Need Before You Sell on Amazon and Shopify at the Same Time

Before you sell on Amazon and Shopify at the same time, get your tools ready. You just need a working Shopify website and an open Amazon Seller Central account.

Shopify Store: Your main online home base for your brand.
Amazon Seller Central: Your account for the big marketplace.
SKU Mapping: Making sure your product names and codes match on both websites.
Central Inventory Tool: One app that tracks all your boxes in one place.

How Inventory Syncing Works When You Sell on Amazon and Shopify at the Same Time

When you sell on Amazon and Shopify at the same time, keeping track of stock is the hardest part. If you have 100 shirts in your room, and Amazon sells 7 while Shopify sells 3, your tracker should drop your total down to 90 right away.

How the Steps Flow

Amazon sale happens → Sync app runs → Stock drops → Shopify store updates.
Shopify sale happens → Sync app runs → Stock drops → Amazon store updates.

Example: If you have 100 items but want to save 10 just in case, set your system to show only 90 as ready to buy. This safety trick stops you from selling things too fast before the app updates.

How to Manage SKU Codes Properly

Every item needs a simple code. If your black shirt has one name on Shopify and a weird different name on Amazon, your app will get mixed up.

Link each Amazon listing and Shopify product to the same stock item.
Example: Use TSHIRT-BLK-M everywhere so your sync app knows it is the same piece.
Double-check your sizes and colors before you turn everything live.

Three Ways to Handle Fulfillment When You Sell on Amazon and Shopify at the Same Time

Sending out boxes from two places is tough work. Pick the shipping style that fits your business best.

Fulfillment Method	Best For	Main Benefit
Amazon MCF	Brands already using FBA	Amazon packs and ships orders from other websites for you
In-house	Small businesses	You pack every box yourself in your own room
3PL	Growing brands	An outside warehouse stores and ships your goods

How Order Tracking Flows

When you sell on Amazon and Shopify at the same time, orders move in a clear circle:

A buyer places an order on Amazon or Shopify.
Your sync app grabs the order info right away.
Your central software takes that item off your total count.
Your pack team or Amazon center puts it in a box.
The tracking number is sent back to your store automatically.

What Fees to Expect on Both Platforms

Both places cost money to use, so plan your prices carefully.

Amazon Costs: Fees to list items, plus storage costs if Amazon packs your boxes. Check current details at Amazon Seller Central Pricing.
Shopify Costs: Monthly website fees and credit card processing charges. Check current plans at Shopify Pricing Plans.

Common Mistakes That Break Multi-Channel Sales

Sellers make quick errors when they sell on Amazon and Shopify at the same time. Avoid these traps to keep things easy.

Using different product codes for the exact same item.
Ignoring sync delays when lots of people buy during holidays.
Forgetting to keep safety stock in your app.
Pricing items too low on Shopify while paying high marketplace fees.

When to Get Help From an Agency

Running two shops gets heavy when sales grow fast. If your apps break or stock counts fail every day, expert help saves your day. If your business needs a custom Amazon–Shopify setup, inventory links, order helpers, or a smooth shipping workflow, Cognito IT Consultancy can build it for you.

Need Expert Help?

Contact the team at Cognito IT Consultancy or call +91 81477 17676 📞 to talk about your store.

Click here to get the best Shopify CRO Services to increase conversions. Also get Shopify SEO, Store Setup, Theme Customization, and Migration Services.

Frequently Asked Questions

1. Can Amazon and Shopify use the same stock?

Yes, a central inventory tool links your items so both sites pull from your real physical pile.

2. Do I need separate product pages?

Amazon and Shopify keep catalogs apart, so you build pages on each and link them together with your shared item codes.

3. How do I stop overselling my items?

Using a real-time sync app with a safety stock buffer stops people from buying things that are already gone.

4. Can Amazon ship my Shopify orders?

Yes, Amazon Multi-Channel Fulfillment lets you use your Amazon stockpile to ship orders from your own website.

5. What is the biggest mistake sellers make?

Sellers often forget to link their product sizes correctly, which breaks the stock sync and causes empty shelves.