2009
Square Founded
First
Native
Served
Integrated
Gateway
Square, an SMB-first commerce platform, an industry-aware payments layer
Square is the commerce platform of Block, Inc. (NYSE: SQ), founded in 2009, built for small and mid-market merchants, and category-leading in retail POS, restaurants, and service businesses. Its hardware and software ecosystem covers in-person (Register, Terminal, Stand, Reader, Tap to Pay on iPhone), online (Square Online, Invoices, Checkout Links), and field (any iPhone or iPad). Its signature advantages for consumer-facing flows are Cash App Pay (native via sibling Block business) and Afterpay BNPL (Block acquired Afterpay in 2022). What it isn't, on its own, is a deep B2B gateway tuned to distributor net-30 AR, manufacturing milestones, or Level 3 commercial-card savings.
That's the layer Clarity Payment Hub supplies. On top of Square's commerce rails, Payment Hub adds branded industry checkout flows, a self-service customer portal tailored to each vertical, 25+ ERP connectors, and, where the vertical needs heavier B2B economics, a multi-gateway routing capability that sends commercial-card Level 2/3 transactions through a dedicated B2B gateway while Square continues to handle POS, field, Cash App Pay, Afterpay, and Appointments flows inside the same branded portal.
What Square owns, the POS hardware, the Square Dashboard, Cash App Pay, Afterpay, Square Banking, the Appointments/Invoices/Subscriptions products, stays with Square. What Payment Hub owns, the industry-specific payment pattern, the ERP posting, the unified customer portal, the multi-gateway routing, extends Square into verticals and transaction types that Square doesn't focus on natively. Your Square account, hardware, and rates all stay exactly as they are.
How Payment Hub connects Square to your ERP
Clarity Connect, the integration engine under Payment Hub with 15+ years of active development, reads from and writes to your ERP in real time using each platform's supported API layer, and talks to Square via the Square Payments API, Web Payments SDK, and webhooks for POS and in-person events.
Inbound from ERP
Customers, contacts, open invoices with line items, account balances, credits, payment history, statements, all in real time, including customers already in your Square Customer Directory.
Outbound to ERP
Applied cash receipts from online, Invoice, and POS transactions. Cash App Pay and Afterpay settlements, address updates. Pay-on-Account allocations, posted the moment Square confirms payment.
Square-side processing
Square authorizes, settles, and funds on its own schedule (T+1 standard, instant transfer optional). Cash App Pay and Afterpay flow on their own rails. Clarity never inserts a spread or marks up transaction costs.
No ERP modifications
Clarity Connect uses only documented, supported integration points. No schema changes, no ERP-side custom code, no plugins to maintain across upgrades.
For cloud ERPs (NetSuite, Acumatica, Dynamics 365 BC, SAP S/4HANA Cloud) Clarity Connect talks directly to the ERP's cloud APIs. For on-premise ERPs (Dynamics GP/NAV, Sage 100/300, SAP ECC, Oracle EBS, SYSPRO, Epicor P21/Eclipse/Eagle) we use a lightweight outbound-only secure agent that calls from inside your network, no inbound firewall ports to open.
Industries Square + Payment Hub serves
Square's fit varies sharply per vertical. The honest reading: Square earns its place where SMB commerce, in-person acceptance, and consumer-facing flows live, and yields to dedicated B2B gateways where Level 3 commercial-card economics and heavy net-30 invoice AR dominate. Payment Hub makes that routing automatic.
B2B Distribution &, Wholesale
On pure B2B AR (net-30 invoices, commercial-card programs), Payment Hub routes to a dedicated B2B gateway for Level 3 savings. On consumer-side flows, parts counters, dealer end-customer pay, D2C parts, Square surfaces with its POS, Cash App Pay, and Afterpay stack.
- Square for retail parts counter and D2C flows
- B2B gateway handles commercial-card Level 3
- Cash App Pay for consumer-side reach
- All transactions post to one ERP in real time
Manufacturing
Square is not a fit for manufacturing B2B AR. Where it earns a place is aftermarket / consumer parts sale, factory-direct retail, and field-service acceptance via Tap to Pay on iPhone. Payment Hub routes milestone billing through a dedicated B2B gateway.
- B2B gateway handles milestone + progress billing
- Square for aftermarket / consumer parts POS
- Tap to Pay on iPhone for field-service close
- Real-time posting across all flows
Healthcare &, Life Sciences
For small independent practices and solo providers, Square Appointments + Tap to Pay on iPhone + Afterpay is a strong patient-pay and in-clinic combination. For large health systems, Payment Hub routes patient AR through a dedicated healthcare-compliant gateway.
- Square Appointments for small independent practices
- Tap to Pay on iPhone for home / mobile care
- Afterpay for larger patient balances
- Large systems route through dedicated B2B gateway
Nonprofit &, Fundraising
Galas, golf tournaments, silent auctions, on-site giving, and Cash App Pay donations are all where Square shines. Square's POS hardware equips volunteers in minutes, Cash App Pay pulls in a younger donor segment, and Afterpay lets larger-ticket purchases go to installment.
- Square POS for gala, event, and tournament acceptance
- Cash App Pay for younger donor reach
- Tap to Pay on iPhone on volunteer devices
- Posting to the fund-accounting GL with campaign tracking
Education
Strong fit for K-12 events, camps, summer programs, continuing-ed registration, and cafeteria/bookstore POS. Less of a fit for large-institution tuition billing, which Payment Hub routes through a dedicated institutional-billing gateway.
- Square POS for cafeteria, bookstore, and event acceptance
- Tap to Pay on iPhone for fundraisers and field trips
- Afterpay for camp and continuing-ed tuition
- Institutional tuition routes to B2B gateway
Government &, Public Sector
Square is not typically a government-sector gateway (procurement, compliance, and CEDP Level 3 requirements favor Visa Acceptance Solutions, Elavon, Fortis, or similar). Payment Hub routes government AR through dedicated gateways while Square can support specific municipal events, parks, or field collection.
- Dedicated B2B gateway for core government AR
- CEDP Level 3 on commercial cards stays primary
- Square possible for municipal events, parks acceptance
- Tap to Pay on iPhone for field inspectors (where permitted)
Professional Services &, Agencies
Square's sweet spot. Square Appointments + Square Invoices + Tap to Pay on iPhone is a native match for legal, accounting, consulting, creative, coaching, and therapy practices. Close the engagement, tap the phone, payment posts to the ERP, in the same meeting.
- Square Appointments for scheduling + taking deposit
- Square Invoices + Payment Links for project billing
- Tap to Pay on iPhone for in-person engagement close
- Trust / IOLTA account segregation for legal workflows
Subscription, SaaS &, Membership
Square Subscriptions handles simple monthly/annual recurring plans well, memberships, coaching retainers, fitness, lessons, content subscriptions. For complex usage-based or tiered SaaS billing, Payment Hub typically routes through Stripe Billing or a dedicated subscription engine.
- Square Subscriptions for simple recurring plans
- Card-on-file and invoice-based memberships
- Complex SaaS billing routes to Stripe / dedicated gateway
- Real-time posting to the membership / ERP system
We can typically go live in 48 hours once ERP sandbox credentials and Square access tokens are shared. Skip the reading and book a 30-minute walkthrough of your vertical's exact flow.
The Missing LinkBetween Paymentsand Your ERP
Clarity Payment Hub closes that gap, connecting your orders, invoices, and payment channels into one flow.
Speak to a Platform ArchitectWhere Square actually runs
Square covers four distinct acceptance surfaces, each useful to a different industry pattern. Payment Hub enables the right combination per vertical.
POS Hardware (Register, Terminal, Stand, Reader)
The category's broadest POS hardware line. Register (standalone iPad-free), Terminal (portable handheld), Stand (iPad-based), Reader (classic square dongle), all process the same card, wallet, Cash App Pay, and Afterpay stack.
Tap to Pay on iPhone
iPhone itself becomes the contactless reader. Square was among the earliest partner acquirers for Tap to Pay on iPhone in the U.S. No terminal, no dongle, useful for professional-services field close, mobile care, event volunteers, and pop-up acceptance.
Square Online &, Payment Links
Hosted checkout, Square Online Store (full e-commerce site builder), embeddable Web Payments SDK, and shareable Payment Links. Payment Hub renders these inside the branded industry portal and wires transactions to the ERP.
Square Invoices &, Appointments
Square Invoices for email-based billing with built-in payment links. Square Appointments for service businesses to schedule, take deposits, and collect final payment. Payment Hub layers the industry-aware flow and ERP posting on top.
For Clarity customers, POS hardware typically covers the in-person portion of the vertical (parts counters, event acceptance, clinic check-in), while Tap to Pay on iPhone covers field and mobile flows, and Square Online + Invoices covers the consumer-web portion. Each of those posts to the same ERP as every other payment method in Payment Hub.
Cash App Pay, Afterpay, and Square Banking
Three Block-owned capabilities that don't exist on any non-Block gateway, wired directly into the industry-aware flow where they matter.
Cash App Pay, native
Accept payments from Cash App users at checkout, in-app, or by QR code at POS. Native integration because Cash App is part of Block. Strong reach into demographic segments underserved by PayPal and Venmo, particularly younger U.S. consumers. Surfaced on consumer-facing industry flows.
Afterpay BNPL, native
Pay in 4 interest-free installments, financed by Afterpay (Block-owned), merchant paid in full up front. No separate merchant contract. Surfaced selectively where BNPL lifts close rates, education tuition, healthcare patient pay, professional services, specialty retail, zero credit risk on your books.
Square Banking
Merchant-side banking: Square Checking, Savings, Loans (formerly Square Capital), and the Square Business Debit Mastercard, funded by Square transaction history. Unique to Square among payment gateways. Relevant for SMB verticals where integrated merchant banking simplifies cash management.
Apple Pay, Google Pay, Gift Cards
The full mobile-wallet stack plus Square's own digital and physical gift-card engine. Surfaced where consumer conversion lift or loyalty programs matter, nonprofit events, professional services, retail parts, education programs.
Cash App Pay is the single most distinctive Square advantage for consumer-facing industry flows. Afterpay is the second. Together they reach demographics, especially younger U.S. consumers, that are harder to convert via PayPal, Venmo, or raw card entry. For verticals where that reach matters (nonprofit galas, event giving, small healthcare practices, education programs, D2C retail), these capabilities alone can justify Square's place in the gateway mix.
Level 2/3 and multi-gateway routing
One of Square's honest limitations compared to dedicated B2B gateways is the depth of Level 3 commercial-card data passing. Payment Hub handles this by routing, not by pretending.
The honest Level 2/3 story on Square
Square supports some Level 2 enhanced data passing on qualified commercial-card transactions, but full Level 3 processing with the line-item and customer-code depth that B2B distributors, manufacturers, and government suppliers need is historically not Square's focus, Square is built for SMB, retail, and service commerce. Routing a $50,000 commercial-card B2B invoice through Square instead of a dedicated B2B gateway can mean leaving 0.5–1.0% on the table in under-qualified interchange.
How Payment Hub handles it
Clarity Payment Hub supports multi-gateway routing, a single branded portal for your customers, a single ERP posting path for your AR team, and intelligent per-transaction routing underneath. For POS, in-person, Cash App Pay, Afterpay, and small-ticket consumer flows, Payment Hub routes to Square. For commercial-card transactions above a configurable threshold or flagged as B2B (purchase-card, corporate-card, fleet-card BIN ranges), Payment Hub routes through a dedicated B2B gateway (Stripe, Cybersource, Worldpay, Fortis, Elavon, or Authorize.Net) with Level 3 data automatically pulled from your ERP line items.
Surcharging
Payment Hub supports compliant credit card surcharging on transactions routed through both Square and the B2B gateway, state-by-state rules, network caps, and the legally required pre-authorization disclosure are all enforced automatically. Cash App Pay and Afterpay follow their respective network rules on surcharging. Debit, prepaid, and non-eligible cards are excluded.
Security, PCI scope, and Block-level compliance
Square is PCI DSS Level 1 certified, the highest tier, and operates under Block, Inc.'s security and compliance framework. Clarity Payment Hub is built to push your deployment to the lightest compliance scope available.
- Tokenization at Square. Every card, Cash App Pay reference, and Afterpay reference is tokenized at Square's PCI-certified vault. Raw card numbers never touch Payment Hub's infrastructure and never touch your servers.
- Web Payments SDK + hosted iframes. Card data is captured inside Square-hosted iframes and tokenized in the browser, so PAN never transits your servers. Qualifies for SAQ A, the lightest PCI self-assessment available.
- 3D Secure 2 step-up. Square supports 3DS2 for liability shift on card-not-present transactions. Payment Hub triggers step-up only when Square's risk engine flags medium risk, keeping low-risk buyers friction-free.
- SOC 2 Type II. Clarity Ventures operates to SOC 2 Type II standards. Security, availability, confidentiality, and data-handling controls are independently audited on an ongoing basis.
- End-to-end encryption on POS hardware. All Square POS hardware encrypts card data at the point of read (EMV chip, magstripe, and contactless). Keys are never stored in the merchant environment.
- Outbound-only agent for on-premise ERPs. No inbound firewall ports. No VPN tunnel. No public ERP exposure.
Square + Payment Hub FAQ
The questions AR, IT, and finance teams ask before rolling out Square through Clarity Payment Hub.
Which industries does Square + Clarity Payment Hub serve?
Square's native strengths are SMB, retail, restaurants, and service businesses, so among the eight Clarity verticals the strongest fits are professional services (Square Appointments + Tap to Pay on iPhone), nonprofit events and in-person giving, small healthcare practices, education programs (camps, after-school, registration), and consumer-side / D2C distribution and parts retail.
For heavy B2B AR, distributor net-30, manufacturing milestones, government commercial purchasing, Payment Hub typically routes the commercial-card portion through a dedicated B2B gateway (Stripe, Cybersource, Worldpay, Fortis, Elavon, or Authorize.Net) and keeps Square handling POS, field, and Cash App Pay flows. One portal, one ERP, the right processor per invoice.
What is Cash App Pay and why does it matter?
Cash App Pay lets buyers check out using their Cash App balance or linked card directly from Square-powered merchants, web, app, or in-person by QR code. Because Cash App is part of Block (Square's parent), the integration is native with no separate merchant contract.
Cash App has tens of millions of monthly active users in the U.S., with particularly strong adoption in younger demographic segments and among users who don't use PayPal or Venmo. For nonprofit giving, event ticketing, education fundraising, and consumer-facing service flows, Cash App Pay is a distinctive reach lever that doesn't exist on any other gateway.
How does Afterpay work through Square?
Block acquired Afterpay in 2022, so Afterpay BNPL (Pay in 4 installments, interest-free) surfaces as a native payment method in Square checkout, no separate merchant contract required. Afterpay finances the buyer and pays the merchant in full up front, so your AR team never carries the credit risk.
Clarity Payment Hub surfaces Afterpay inside industry-aware flows where BNPL lifts close rates, education enrollment, healthcare patient pay, professional-service retainers, specialty retail, and hides it where it doesn't fit pure B2B AR.
Does Square support Level 2 and Level 3 processing?
Square supports some Level 2 enhanced data passing on qualified commercial-card transactions, but full Level 3 processing with the line-item and customer-code depth that B2B distributors, manufacturers, and government suppliers need is historically not Square's focus, Square is built for SMB, retail, and service commerce.
For verticals where Level 3 commercial-card savings matter, Clarity Payment Hub routes those transactions through a dedicated B2B gateway (Stripe, Cybersource, Worldpay, Fortis, Elavon, Authorize.Net, and others) while Square continues to handle POS, field, Cash App Pay, Afterpay, and Appointments flows in the same branded portal. You get Square where it wins and L3 economics where they matter.
What is Tap to Pay on iPhone via Square?
Tap to Pay on iPhone lets Square merchants accept contactless payments, cards, Apple Pay, Google Pay, Cash App Pay, directly on an iPhone with no external reader or dongle. It turns iPhone hardware into a card-present reader. Square was one of the earliest partner acquirers for Tap to Pay on iPhone in the U.S.
Clarity Payment Hub uses this in verticals where field-services, in-person, or pop-up acceptance is part of the workflow: legal / consulting client visits, mobile-care, nonprofit events, school fundraisers, and professional-services delivery. Card-present rates apply, every transaction posts to the ERP in real time.
How does Clarity Payment Hub handle Square settlements?
Square authorizes, settles, and funds on its own schedule (typically T+1 standard, or instant transfer for a fee). What Clarity Payment Hub changes is the ERP side: the applied cash receipt is written back to your ERP in real time the moment Square confirms payment via webhook.
There is no overnight batch, no CSV import, and no manual cash application. POS transactions, Square Invoices payments, Appointments deposits, Cash App Pay confirmations, and Afterpay settlements all post to the ERP as they happen, against the correct customer and invoice.
What is the integration cost and timeline for Square through Payment Hub?
Clarity Payment Hub is packaged software, not a custom build. A typical Square + ERP go-live takes 48 hours once Clarity receives ERP sandbox credentials and Square access tokens. No new servers, no middleware, no custom code on your ERP.
You keep your Square account, your hardware, and your negotiated rates, Clarity does not insert a transaction markup or skim basis points. Implementation is a flat subscription with the ERP integration included.
Is Square PCI compliant and how does it affect our own PCI scope?
Square is PCI DSS Level 1 certified, the highest tier, and is operated by Block, Inc. (NYSE: SQ). Clarity Payment Hub uses Square Web Payments SDK and hosted iframes to tokenize card data directly in the customer's browser, meaning raw PAN never reaches your servers, Payment Hub's servers, or the network in between. Square POS hardware encrypts card data at the point of read.
Most deployments qualify for SAQ A, the lightest PCI self-assessment available. That means a dramatically shorter annual compliance review, no cardholder-data environment to audit, and significantly lower risk of breach exposure.
Does Square support recurring billing and subscriptions?
Yes, via Square Subscriptions for simple recurring plans (memberships, coaching retainers, fitness, lessons, content subscriptions) and via Square Invoices with recurring schedules. Payment Hub wires these into your ERP so memberships and subscriptions post to the right customer and GL account in real time.
For complex subscription needs, usage-based billing, tiered pricing, prorated upgrades/downgrades, trials with complex rules, Payment Hub typically routes through Stripe Billing or a dedicated subscription engine, with Square continuing to handle the SMB-scale recurring flows.
How does Square compare to Stripe or Braintree for industry payments?
Square is a commerce platform first, gateway second, optimized for SMB, retail, restaurant, and service businesses that need POS, appointments, invoicing, and in-person acceptance under one roof. Stripe and Braintree are developer-first gateways optimized for deeper B2B integration, complex subscription billing, Level 3 commercial-card processing, and marketplace splits.
The honest pattern: if your vertical has significant in-person / service / SMB commerce, Square earns a place. If it's pure B2B AR with Level 3 commercial cards, a developer-first gateway wins. Payment Hub supports running both at once, Square for the flows it's best at, a B2B gateway for the rest, under a single branded portal and ERP posting path.
Can we run Square alongside another primary gateway?
Yes, this is actually Payment Hub's sweet spot for Square customers. Multi-gateway routing keeps Square handling POS, field, Cash App Pay, Afterpay, and Appointments flows while a dedicated B2B gateway handles commercial-card Level 3 and heavy net-30 invoice AR. Your customers see one branded portal with one payment experience. Your AR team sees one ERP posting path with one cash-application workflow.
Routing rules are configurable per vertical, per customer segment, per invoice threshold, per card BIN range, and per channel (POS vs. web vs. invoice). Payment Hub makes the routing automatic so your team never has to reason about it per transaction.