Quick verdict
Square is worth investigating for the use cases below, but this is not a scored or final recommendation. BestStorefront has researched its public documentation; hands-on workflow, support, billing, and reliability testing are still pending.
Fit
Best for
- Merchants that sell in person as well as online and want payments and POS from one provider.
- Retail, food, and service businesses evaluating hardware, POS software, and online selling together.
- Developers building online payments through Square’s Online API.
Limits
Who should skip it or consider alternatives
- Online-only stores that need deep custom checkout control should also investigate Stripe.
- Global enterprises with multi-market acquiring needs should compare Adyen.
- Anyone expecting one universal Square online rate: verify the rate for your exact plan or service.
Product role
What it does
Square combines payments with point-of-sale and omnichannel commerce tools for businesses that sell in person and online. Its online processing rate depends on which Square plan or service is used.
Payments + POS
Square pairs payment processing with point-of-sale software and hardware for in-person selling.
Online selling
Square offers online selling tools; online rates vary by plan/service.
Online API
Square’s Online API is listed at 2.9% + 30¢.
Omnichannel
One provider across in-person and online channels can simplify reporting—confirm what your plan includes.
Connections
Integrations and ecosystem
Square is used both as a standalone commerce system and as a payment provider connected to other storefronts. Which Square product you use—its own online tools, a plan tier, or the API—determines the rate and capabilities, so define the setup before modeling cost.
Commercial terms
Pricing: verify the current offer
Square’s current US fee page shows different online rates in different plan and service columns—including 3.3% + 30¢ and 2.9% + 30¢—and lists the Online API at 2.9% + 30¢. Because the rate depends on the plan or service, we do not summarize a single “Square online rate.” Verify the exact rate for your Square plan on the official page. Verified Sep 28, 2026.
| Square online context (US) | Published rate | Verified |
|---|---|---|
| Online API | 2.9% + 30¢ | Sep 28, 2026 |
| Online rates across plan columns | 3.3% + 30¢ or 2.9% + 30¢, depending on plan/service | Sep 28, 2026 |
Why no single rate
Why our summary does not show one Square rate
Square’s fee page organizes online rates by plan and service. Presenting one figure would be accurate for some merchants and wrong for others. Identify which Square plan or service you would use, then read that column on Square’s official fee page.
Still to model
Fees that still need modeling
- Your in-person versus online sales mix, since rates differ by channel.
- Plan or subscription costs for Square software tiers you would use.
- Hardware costs for in-person selling.
- Disputes, refunds, and any international or currency considerations for your market.
Cross-border
International considerations
This preview covers Square’s US fee page only. Square’s availability, products, and rates differ by country; merchants outside the US should use their local Square fee page.
Pros and tradeoffs
Research observations
Omnichannel orientation
Square’s strength in research is the combination of POS and online selling, not online payments alone.
Plan-dependent pricing
Online rates vary by plan/service; the right comparison requires choosing a configuration first.
API option
The Online API offers a published rate for developer-built online payments.
Hardware adds cost
In-person selling brings hardware and possibly software subscription costs.
Shortlist
Alternatives to investigate
Stripe
Online, API-oriented payments with a published standard card rate.
PayPal
Wallet and branded checkout with payment-type rates.
Adyen
Enterprise omnichannel and global payments infrastructure.
Evidence status
Our evidence
This page is based on first-party sources. BestStorefront has not yet created an account or run hands-on tests for this product.
| Evidence | Status | Detail |
|---|---|---|
| Official documentation reviewed | Verified | First-party product, pricing and help pages linked below. |
| Pricing independently verified | Source-checked | Compared with the official pricing page (Sep 28, 2026). |
| Account created | Not tested | No BestStorefront test account yet. |
| Core workflows tested | Not tested | Category protocol tasks. |
| Support contacted | Not tested | Vendor support response. |
| Billing tested | Not tested | Invoice reconciled against published pricing. |
| Cancellation / export tested | Not tested | Exit path and data portability. |
Hands-on agenda
What we still need to test
- Build a test checkout on a representative storefront and document integration steps and required developer time.
- Run authorizations, captures, partial and full refunds, and a simulated dispute; record fees and reporting at each step.
- Reconcile a month of test payouts against orders, fees, refunds, and currency conversion.
- Evaluate fraud and risk tooling, payout timing, account review, and support responsiveness.
- Run an in-person and an online sale through the same account and compare reporting and fees.
Standard payments protocol — tasks every product in this category goes through:
- Complete account onboarding and verification
- Process test and live transactions across methods
- Issue a refund and handle a dispute flow
- Review payout timing and reporting
- Reconcile fees charged against published rates
No score or final verdict will be added until this work is complete.
Documentation
Sources and official product
This overview is based on the vendor's public documentation. Feature availability and commercial terms can change; verify details with the vendor.
Decision support
Frequently asked questions
What is Square’s online processing fee?
It depends on your Square plan or service. The US fee page shows online rates including 3.3% + 30¢ and 2.9% + 30¢ in different columns, and the Online API at 2.9% + 30¢.
Is Square only for in-person sales?
No. Square offers online selling and an Online API alongside POS.
Has BestStorefront tested Square?
Not yet. This is an editorial overview; hands-on testing is pending.