Square

Mollie

Square vs Mollie: Which Is Better? (2026)

Square vs Mollie — The Verdict

Square is the better choice for US-based businesses that need integrated in-person POS payments alongside online sales. Mollie is the superior option for European businesses focused on online payments with access to iDEAL, Bancontact, SOFORT, and other EU-specific methods. Square dominates the US omnichannel SMB market; Mollie dominates European online payments for SMBs.

Rating Comparison

Square

4.3

Overall

Mollie

4.2

4.3

Pricing

4.4

4.5

Features

4.0

4.8

Ease of Use

4.7

3.8

Support

4.2

3.2

Global Coverage

3.5

Side-by-Side Comparison

Feature	Square	Mollie
Transaction Fee	2.6% + $0.10 (in-person) / 2.9% + $0.30 (online)	€0.25 + scheme rate (1.8% EU / 2.8% non-EU cards)
Monthly Fee	$0 (Free) / $29 (Plus) / $79 (Premium)	$0
Setup Fee	$0	$0
Payout Schedule	Next business day (standard) / Instant for 1.75% fee	Next business day
Pricing Model	Flat Rate	Interchange+
Founded	2009	2004
Headquarters	San Francisco, California, USA	Amsterdam, Netherlands
Countries	8 countries	35 countries
Currencies	6 currencies	20 currencies
Payment Methods	5 methods	14 methods
Features	14 features	16 features

Category Breakdown

In-Person / POS Payments

Square

Square pioneered modern POS payments with its card readers, terminals, and register hardware. Its POS ecosystem includes inventory management, employee scheduling, and loyalty programs — a complete brick-and-mortar solution. Mollie has launched POS terminals in select European markets but its in-store offering is still nascent compared to Square's mature ecosystem.

European Payment Methods

Mollie

Mollie supports a comprehensive range of European payment methods including iDEAL (Netherlands), Bancontact (Belgium), SOFORT/Klarna (Germany/Austria), EPS (Austria), Przelewy24 (Poland), and more. Square supports basic card payments in a few European markets but lacks coverage of local European payment methods.

US Market Ecosystem

Square

Square offers a complete business suite for the US market: POS hardware, payroll, banking (Square Financial Services), loans (Square Loans), marketing tools, appointment scheduling, and invoicing. This all-in-one ecosystem for US small businesses has no equivalent from Mollie.

Online Payment Integration

Mollie

Mollie provides polished integrations with WooCommerce, Magento, Shopify, PrestaShop, and other ecommerce platforms — specifically optimized for European merchants. Its checkout experience with local methods is smoother. Square offers online payment APIs but they are more US-centric in design.

Pricing Transparency

Tie

Both offer transparent, published pricing with no monthly fees on base plans. Square charges 2.6% + $0.10 for in-person US transactions and 2.9% + $0.30 online. Mollie charges per transaction with rates varying by payment method (e.g., EUR 0.29 + variable for cards). Both are straightforward for SMBs.

Business Banking & Financial Services

Square

Square offers a checking account through Square Financial Services, instant deposits, and Square Loans based on transaction history. This embedded financial services suite helps US small businesses manage cash flow. Mollie does not offer banking or lending products.

Ecommerce Platform Plugins

Mollie

Mollie offers well-maintained, highly-rated plugins for WooCommerce, Magento 2, Shopify, PrestaShop, Lightspeed, and BigCommerce — all with strong European payment method support. Square's plugins are more limited in scope and less optimized for European ecommerce platforms.

Which Should You Choose?

Choose Square if...

US coffee shop or restaurant — Square's POS system with Restaurant and Retail-specific solutions, tipping support, kitchen display system, and integrated hardware is purpose-built for US food service and retail businesses. Mollie has no comparable in-person offering in the US.
US omnichannel small business — Square seamlessly connects in-store POS, online store, social commerce, and invoicing in one ecosystem — with shared inventory, customer data, and reporting. For US small businesses selling across channels, Square is the most complete solution.
Service business needing appointments and payments — Square Appointments combines scheduling, client management, and payment processing. For service businesses like salons, consultants, and repair shops, Square's integrated appointment and payment system eliminates the need for separate tools.

Choose Mollie if...

Dutch or Belgian online store — Mollie is headquartered in Amsterdam and offers the best iDEAL and Bancontact integration available. Dutch and Belgian online stores benefit from local support, local payment method expertise, and a community of local developers familiar with Mollie.
European SaaS or digital business — Mollie's modern API, European payment method coverage, and per-transaction pricing without monthly fees make it ideal for European SaaS companies and digital businesses collecting payments from EU customers.

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Related Resources

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Mollie

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Frequently Asked Questions

Is Square available in Europe?

Square has limited European availability. It operates in the UK, France, Spain, and Ireland for in-person and online payments. However, it does not support European local payment methods like iDEAL, Bancontact, or SOFORT. For comprehensive European payment acceptance, Mollie is the stronger choice.

Can Mollie be used for in-person payments?

Mollie has launched POS terminals in select European markets (Netherlands and Belgium initially). However, its in-person payment offering is still maturing and lacks the comprehensive POS ecosystem (inventory, staffing, loyalty) that Square provides. Mollie is primarily an online payment processor.

Which is cheaper — Square or Mollie?

It depends on your market and payment methods. Square charges 2.6% + $0.10 for US in-person and 2.9% + $0.30 for online. Mollie's rates vary by method: iDEAL is EUR 0.29 flat, cards start at EUR 0.29 + percentage. For European businesses, Mollie's local method pricing is often cheaper than card processing fees.

Does Square support iDEAL or other European payment methods?

No. Square does not support iDEAL, Bancontact, SOFORT, Giropay, or other European local payment methods. It processes card payments and Apple Pay/Google Pay in its European markets. If you need European local payment methods, Mollie is the right choice.

Can I use Square for online-only sales in Europe?

Square does offer online payment processing in the UK, France, Spain, and Ireland — but only for card payments. If your European customers prefer local payment methods (which many do — iDEAL accounts for 70%+ of Dutch online payments), Mollie will deliver significantly higher conversion rates.