Square · FAQ Hub

Square Integration FAQs: one inventory count, in-store and everywhere else

Square earns its place as the register and the online store for a huge share of small businesses — but the moment a Square seller adds Amazon, Walmart, or a second sales channel, Square's own inventory sync stops being enough. The InfiPlex™ Inventory & Order Management System (OMS) connects Square Online and in-person POS sales to the same real-time inventory pool as every marketplace you sell on. Below are the questions Square sellers ask us most.

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Section 1 of 5 · Getting connected

Square Integration & Setup

How the InfiPlex Square connection works, and what onboarding looks like.

What is the InfiPlex Square integration?

The InfiPlex Square integration connects your Square account — in-person POS and Square Online together — to the InfiPlex Inventory & Order Management System. Online orders pull in automatically, inventory syncs in real time across in-person sales, Square Online, and every marketplace you sell on, and tracking flows back to Square once orders ship.

How do I connect Square to InfiPlex?

Setup is quick and simple: after you sign up, our USA-based team provisions your OMS site within 1–2 business days and links your Square account. There's nothing to install and no developer needed — we handle the connection, SKU mapping, and shipping configuration with you.

How long does Square setup take with InfiPlex?

Most sellers are live in 1–3 business days. The connection itself completes quickly; the rest of the window goes to mapping your catalog and confirming inventory and shipping settings.

Do I need Square Online, or does POS-only work too?

InfiPlex connects both. If you only use Square for in-person POS today, InfiPlex can still keep that inventory in sync with marketplaces you add later; if you also run Square Online, its orders pull in and ship the same way any other channel's orders do.

Does this work with multiple Square locations?

Yes — InfiPlex maps multiple Square locations into your master inventory pool, so a sale at any physical location adjusts availability everywhere else, including your online channels.

Section 2 of 5 · Order flow

Order Management: Online + In-Person

How Square Online orders reach InfiPlex, and how in-person sales stay reflected everywhere.

How do Square Online orders get into InfiPlex?

InfiPlex pulls new Square Online orders approximately every 15 minutes — faster if needed — landing in the same queue as your Amazon, Walmart, and other channel orders, ready to pick, pack, and ship.

Do in-person Square sales create orders in InfiPlex too?

In-person sales are reflected as inventory decrements across your connected channels in real time; they don't need fulfillment the way an online or marketplace order does, since the customer walked out with the product. The key is that a countertop sale instantly protects your Amazon and Walmart availability from an oversell.

Section 3 of 5 · Stock control

Inventory Sync Across Square & Other Channels

How InfiPlex keeps in-person, online, and marketplace inventory aligned.

How does inventory sync work between Square and my other channels?

InfiPlex maintains one master inventory pool. A sale at your register, on Square Online, or on any connected marketplace updates available quantities everywhere in real time — the mechanism that actually prevents overselling once you're on more than one channel.

How do I update inventory in bulk?

Use the built-in Inventory Tool for direct edits, the Inventory Upload tool for spreadsheet-based changes, scheduled FTP feeds, or automated pulls from supplier systems. One update propagates to Square and every other connected channel.

Section 4 of 5 · Beyond the register

Growing Beyond Square

How Square sellers add marketplaces and systems without losing what makes Square work.

Section 5 of 5 · Plans & costs

Square Integration Pricing & Plans

What connecting Square to InfiPlex costs, and which plan fits.

How much does the InfiPlex Square integration cost?

Square connects on every InfiPlex plan. Basic Starter is $49.99/month with up to 2,000 SKUs at $0.50 per order; Growth Starter is $499.99/month with 10,000 SKUs and 1,000 orders included ($0.10 per additional order); Growth Pro is $999.99/month with 100,000 SKUs and 10,000 orders included ($0.05 per additional order). Full details are on the Pricing page.

Which InfiPlex plan fits a Square seller adding marketplaces?

Most Square sellers start on Basic Starter when adding their first marketplace and move to Growth Starter as combined order volume grows — Growth Starter's included order block and Marketplace Repricer become worthwhile once you're running several channels at once.

Is there a long-term contract?

Growth packages carry a 3-month minimum commitment and Partner packages a 12-month term; Basic Starter is month-to-month. Schedule a demo and we'll scope the right plan against your channel mix.

Connect the rest of your stack

Pair Square with the systems you already run

InfiPlex connects Square with 130+ marketplaces, carts, shipping platforms, 3PLs, WMS, and ERP systems — and our Growth Packages include building new API integrations you need at no additional cost.

How it works

How the InfiPlex Square integration works

Square already keeps in-person and Square Online sales in sync with each other — InfiPlex extends that same real-time accuracy out to every other channel you sell on. A sale rung up at the register instantly adjusts what's available on Amazon and Walmart; a marketplace sale adjusts what your countertop system shows is in stock. Orders from every channel land in one queue, and shipments route through your warehouse or a 3PL with tracking posted back automatically.

Flow diagram: Square sends new orders to the InfiPlex Order Management System about every 15 minutes. InfiPlex pushes tracking numbers and real-time inventory back to Square, and routes orders to Your Warehouses, 3PL / WMS Partners, Other Channels for fulfillment. Square POS & Square Online Seller account InfiPlex OMS Orders · Inventory · Shipping 100+ carriers · buffers · automation SINGLE SOURCE OF TRUTH Orders pulled ~every 15 min Tracking + real-time inventory pushed back Orders routed for fulfillment Ship confirmations + stock levels return Your Warehouses Ship online orders with 100+ carriers 3PL / WMS Partners ShipStation, ShipHero, Extensiv & more Other Channels Amazon, Walmart & more share the pool
The InfiPlex Square sync rail: online orders from Square flow into the OMS, ship from your warehouse or 3PL, and return tracking to Square — while in-person POS sales and every marketplace draw down the same real-time inventory pool.

Ready to put Square on autopilot?

Your OMS is typically live in 1–3 business days, and our USA‑based team handles onboarding with you — no coding required.

Have a question we didn’t answer?

Our team answers real questions from Square sellers every day. Contact us, email info@infiplex.com, or call 888‑770‑0857 and we’ll walk you through your exact setup — we can also add this page’s answer for the next seller who asks.