Custom payment integrations for marketplace sellers

When off-the-shelf tools don't fit, we build custom payment flows. A common build syncs marketplace orders into Square inventory. Roots Payments scopes, builds and supports it.
Talk to an online brand payments specialistAll marketplace & multichannel sellers solutions
Free 30-minute consultation. Review your setup, compare options and leave with clear next steps.

Payment solutions for marketplace & multichannel sellers

How each solution supports marketplace & multichannel sellers

See what each option adds to the way your business takes and tracks payments.

Square Online (websites)

For marketplace & multichannel sellers: Give customers an online storefront for online orders, in-store purchases and marketplace sales, with ordering and fulfillment choices suited to your business. Square Online gives marketplace sellers a storefront for pickup, shipping and local delivery. Roots builds the product catalog and separately connects marketplace inventory tools to your sales workflow.
  • Build product pages with photos, variants and descriptions
  • Set shipping zones, pickup windows and local delivery radius
  • Connect your domain and basic on-page SEO
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Square for Retail

For marketplace & multichannel sellers: Connect online orders, in-store purchases and marketplace sales to a retail catalog, stock tracking and customer purchase history. Square describes Square for Retail as a POS to "sell more and stay stocked with a POS designed for retail." For marketplace sellers, that means products listed on several marketplaces tracked in one catalog with stock synced between the counter and online. Roots Payments, an independent Square Reseller, builds the catalog, configures the plan and hardware, and supports your team after launch.
  • Import and clean up your catalog of products listed on several marketplaces
  • Map your workflow to Square Free, Plus or Premium before you commit
  • Configure barcode labels, scanners, printers and cash drawers
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Square Integrations

For marketplace & multichannel sellers: Connect Square transaction data with the tools used to manage online orders, store stock and refunds, reducing repeated data entry. Square's App Marketplace connects the POS to accounting, ecommerce and other tools. Multichannel sellers connect inventory sync apps from Square's App Marketplace. Roots Payments picks the apps, connects them and checks that data lands correctly.
  • Recommend apps from Square's App Marketplace
  • Connect and map accounts, taxes and categories
  • Test sync with real sales
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E-commerce Payments

For marketplace & multichannel sellers: Add online checkout for online orders, in-store purchases and marketplace sales, with order references carried through payment and fulfillment. Ecommerce payments connect your website or online store to a partner-provided merchant account arranged by Roots and gateway. Card-not-present orders carry more fraud and chargeback risk than in-store sales. Roots Payments sets up checkout, fraud tools and reporting.
  • Connect your store platform
  • Set fraud rules for your ticket size
  • Test checkout and refunds
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Merchant Account

For marketplace & multichannel sellers: Arrange a processing account for online orders, in-store purchases and marketplace sales, with checkout methods matched to how customers pay. A dedicated merchant account gives marketplace sellers their own processing relationship, with interchange-plus or flat pricing and statements we explain line by line. Many small shops start on flat-rate pricing. Roots Payments reviews your statements and quotes before you switch.
  • Review your current statements for hidden fees
  • Quote pricing based on your card mix
  • Set up terminals or connect your POS
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Custom Payment Integration

For marketplace & multichannel sellers: Connect the payment flow for online orders, in-store purchases and marketplace sales with your software and the operational records behind online orders, store stock and refunds. When off-the-shelf tools don't fit, we build custom payment flows. A common build syncs marketplace orders into Square inventory. Roots Payments scopes, builds and supports it.
  • Scope and quote up front
  • Build and test
  • Deploy and monitor

Custom Payment Integration questions

Questions online brand owners ask about payments and POS.
A project can connect checkout, payment status, refunds or reconciliation to your business software. Roots scopes the required data flow and builds the agreed connection.
We map the workflow, review API or file documentation and define acceptance checks. You receive a project scope and quote before development starts.
Bring your software documentation, payment workflow and reporting files. Roots uses these details to plan the workflow for marketplace & multichannel sellers and prepare a clear setup scope.
Request a quote for your business and the setup you need. We review the scope and costs with you before you proceed. Consultations and payment reviews are free.

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Book a free 30-minute review. We’ll map your setup, explain the options and work through clear next steps.
Talk to an online brand payments specialistAll marketplace & multichannel sellers solutions