Square Lightspeed Integration: Sync Inventory, Products & Orders
Running Square at one counter and Lightspeed at another? Keeping both registers on the same inventory number can become a daily task. QuickSync Square Lightspeed integration connects Square and Lightspeed, so inventory, products, prices, and orders sync automatically.
From $19 a month for two shops · no credit card · connected in about ten minutes · nothing changes until you say so · Updated 15 September 2026
Square
LightspeedStart Syncing Square and Lightspeed
Getting Square and Lightspeed connected takes about 10 minutes. Here’s how to get started with Lightspeed and Square integration.
Sign Up
Visit QuickSync and click Sign Up. Fill in your details to create your account.
Connect Square
Visit the QuickSync dashboard, click on Add Store select Square. Sign in to Square and approve QuickSync.
Connect Lightspeed
Similarly, click on Add Store and choose Lightspeed. Sign in to Lightspeed X-Series and approve QuickSync for the outlet you want to connect.
Let QuickSync Match Your Products
Once both stores are connected, select the syncing features you need. QuickSync will match your products and apply the selected settings automatically.
See What QuickSync Keeps Updated
QuickSync offers more than a basic inventory connection. Product information, stock, prices, and orders can sync between Square and Lightspeed, with rules available where the two platforms handle data differently.
SupportedSupported, with a limitNot supported
| What | Square | Lightspeed |
|---|---|---|
| Stock count | Both ways | Both ways |
| New listings | We can create and update | We can create and update |
| Prices | Sent, with your rule applied | Sent, with your rule applied |
| Orders in | Into QuickSync | Into QuickSync |
| Tracking back | Square does not accept one | Marked shipped, no tracking number |
| Photos and options | Photos, sizes and colours | Photos, sizes and colours |
| Update speed | Under a second | Under a second |
| Detection speed | The moment it happens | The moment it happens |
Less Manual Work Across Lightspeed and Square
QuickSync takes repetitive updates off your plate, so you don’t have to change stock, prices, or orders in Square and Lightspeed separately.
| Two shops, running manually | Two shops, connected via QuickSync |
|---|---|
| The last one sells in both shops within the same hour | Whichever shop sells it, the other one drops to match |
| Typing the same stock numbers into Square and Lightspeed each morning | One count, sent to both, without anyone opening a spreadsheet |
| Changing a price means editing the same product twice | Change it once and each shop gets the price you set for it |
| Orders in two dashboards, matched up by hand at the end of the week | Every order already matched to the right product |
| A refund leaves your numbers wrong until someone notices | A refund puts the stock back and tells both shops |
| Guessing how stale each shop’s number is | A sale on either shop reaches the other in under a second |
One Lightspeed Sale, Synced in Seconds
A sale at the Lightspeed counter can change the stock available at Square almost immediately. Here’s a real example of how the update moves between the two stores.
Lightspeed · order #447114:02:11Lightspeed41sold hereSquare41+0.3sCorrecting Square takes under a second once we have the sale. The order is in your packing list with the Lightspeed order number on it.
The other direction is the same: a sale on Square reaches Lightspeed just as quickly, because Square pushes it to us the moment it happens too.
What to Expect When Connecting Lightspeed and Square
Square and Lightspeed work differently in a few areas. These limitations are worth knowing before you get started with Square Lightspeed integration.
Sync speed
Stock updates between Square and Lightspeed in seconds
Both POS systems tell QuickSync when something sells. There is no polling gap on this connection, so a stock change can reach the other side in under a second.
Inventory limit
No tracking number back to Square
Square does not have a tracking-number field, so tracking cannot be written back there. Lightspeed marks an order fulfilled but does not retain the carrier or tracking number with the sale.
Manual control
Listings do not update on their own
Product copying waits for your review before it is published. Once syncing is enabled, stock updates can move automatically between the connected stores.
Keep Square and Lightspeed on the Same Stock
Square and Lightspeed are both point-of-sale systems, so this integration is about keeping two registers working from the same stock.
You might have Square at one location and Lightspeed at another, or use both at different counters in the same store. Either way, each POS keeps its own catalog and stock count, even when both are selling from the same inventory.
- Two tills: Square and Lightspeed are both designed for selling in-store, so this setup connects two POS systems rather than a POS and an online store.
- One stock pool: Two registers can sell from the same inventory, even when their stock counts are separate.
- No shared catalog: Square cannot read the Lightspeed catalog, and vice versa.
- Instant updates: Both systems tell QuickSync when a sale happens, so neither side waits for a scheduled check.
- No master register: QuickSync keeps the count aligned between both tills without making one the master.
- SKU limit: Square supports up to 80 characters, while Lightspeed allows 64.
- Long SKUs: Anything over 64 characters can be truncated in Lightspeed and may stop matching the original product.
The 64-character limit is the main thing to check before connecting. For most catalogs, a quick SKU-length check is all you need.
Tracking Numbers Stay in QuickSync
Square and Lightspeed handle tracking information differently, so it’s worth knowing where those details are stored.
Square has no field for tracking numbers, while Lightspeed can mark an order as fulfilled but does not save the carrier or tracking number.
- Square: Tracking numbers cannot be added to Square.
- Lightspeed: Orders can be marked as fulfilled, but tracking details are not stored.
- QuickSync: Tracking numbers remain available in QuickSync.
- Lightspeed orders: If an order starts in Lightspeed and is shipped later, its tracking number stays in QuickSync.
- WooCommerce orders: If an order starts in WooCommerce, the tracking number remains available on the WooCommerce order.
- When it matters: This is mainly important when you need to find tracking details after shipping an order placed in store.
The key thing to remember is that QuickSync keeps the tracking number available even when Square or Lightspeed cannot store it.
Pick the Right Plan for Your Store
Choose a QuickSync plan based on your catalog size and the features you need.
Lite
$19/mo for two shops1,000 items and up to eight connected integrations, with stock matched on both sides automatically. Enough for Square and Lightspeed on their own, at $19 a month for the two.
Pro
$29/mo for two shops2,500 items and up to eight connected integrations. Listings and orders sync here as well as stock. Most sellers running two shops properly end up here.
Ultra at $69 and Ultra+ at $99 add larger catalogues, price rules and setup help. Every plan starts with a 14-day free trial and no card.
Questions people ask about this pair
How quickly does Lightspeed update after something sells on Square?
QuickSync can send the inventory change to Lightspeed in under a second. The same applies in the other direction. If the receiving side is temporarily unavailable, QuickSync holds and retries the update.
Does tracking sync between Square and Lightspeed?
Tracking numbers do not sync into both POS systems. Square has no tracking field, while Lightspeed does not retain the carrier or tracking number after fulfillment. QuickSync keeps the tracking information available.
What happens if my Square SKU is longer than 64 characters?
Lightspeed supports SKUs up to 64 characters, while Square allows up to 80. Longer SKUs can be truncated in Lightspeed, which may cause the product to stop matching correctly.
Can I connect multiple Square locations to Lightspeed?
QuickSync can connect Square across the locations you select, while Lightspeed connects to the specific outlet you approve. This lets you choose which locations should be included in your connected setup.
What should I do if my Square and Lightspeed products are not matching?
Check the SKU first. QuickSync matches products by SKU and then by title. If a product is still unmatched, you can review it in QuickSync before starting the sync.
Selling on More Sales Channels? Sync Them with QuickSync
Square and Lightspeed may be the two stores you need today, but QuickSync can connect them with other sales channels too. Each integration has its own syncing options, limits, and setup details.
Or read about one shop on its own
Every channel has a page covering exactly what syncs, what does not, and how fast.
Ready to Bring Square and Lightspeed Together?
Connect Square and Lightspeed with QuickSync and leave the repeated stock updates behind. Start your 14-day free trial with no credit card and see how much easier two-store inventory can be.
No credit card required
Setup guides for this pair
Connect each shop with its own walkthrough, then come back to this page for how Square and Lightspeed stay in step.