Best Card Readers for Small Business

By Stefan Ciancio · Jul 13, 2025 · 5 min read

Disclosure: ProcessingScoop may earn a commission if you sign up through some links on this page. How we review and earn

Understanding Card Readers for Small Business

Choosing a card reader is a critical decision for small businesses looking to accept in-person payments in 2025. Whether you are just starting out or managing a growing enterprise, the right card reader can directly impact your sales and operational efficiency. This guide covers everything you need to know, from fundamental concepts to advanced strategies for optimizing your payment setup.

The landscape of in-person payments has evolved, driven by technology and changing consumer expectations. Businesses that stay informed about these changes gain a significant competitive advantage. For businesses that also sell online, modern solutions can unify online and in-person sales while providing powerful tools for increasing revenue, like customer financing and payment recovery.

Key Takeaways

Why it matters: The right payment solution can improve cash flow and reduce administrative overhead while opening up new sales opportunities.
Common mistakes: Many merchants overpay due to complex pricing structures and a failure to regularly review their payment provider.
Option to compare: Different business types need different tools, and Commas is one option to compare for the online side of sales, such as courses, coaching and digital products.
Time investment: Implementing the recommendations in this guide can improve your payment operations and potentially increase sales.

Part of our guide to In-person payments and POS

How Card Readers and Payment Processing Work

Understanding how card readers work requires knowledge of the broader payment ecosystem. The payment processing chain involves multiple parties, each playing a distinct role and each taking a portion of every transaction.

The Payment Processing Chain

Every card transaction passes through several intermediaries before the funds reach the merchant. The card networks (Visa, Mastercard, American Express, Discover) set the baseline interchange rates. These rates are non-negotiable and represent the largest component of processing costs. On top of interchange, processors add their own markup. Assessment fees from the card networks add a small percentage to each transaction.

How Modern Processors Improve Sales

Modern payment platforms can increase revenue through several mechanisms. For instance, Commas uses sophisticated infrastructure to route each transaction to the processor most likely to approve it. Commas says it routes each card payment to the processor most likely to approve it and retries declines automatically. For businesses selling high-value goods or services, Commas offers integrated customer financing from $30 up to $465,000 (the top end is for business-to-business purchases) through providers like Klarna, PayPal, and Climb, which can make large purchases more accessible to customers.

The Merchant of Record Model

One significant innovation in payment processing is the Merchant of Record (MoR) model. In this model, the payment services provider becomes the seller of record for transactions. This means the provider is responsible for critical functions like collecting and remitting sales tax or VAT. While merchants are still responsible for managing disputes and may incur dispute fees, the MoR handles the tax compliance aspects of a sale.

Best Practices for Choosing a Payment Solution

This guide's research has revealed several best practices that consistently lead to better outcomes when choosing a payment solution.

Essential Best Practices

Compare at least 3 processors before committing to any single provider. Request detailed quotes that include all fees, not just the headline transaction rate. Many processors advertise low per-transaction rates but add monthly fees, PCI compliance charges, and other costs that increase the total cost.
Read the full agreement carefully and watch for early termination fees, automatic rate increases, monthly minimums, and long-term contract requirements. Modern providers often operate on month-to-month terms with no cancellation penalties.
Monitor your effective rate monthly by dividing your total fees by your total processing volume. If your rate seems too high, you should explore alternatives.
Leverage your volume for better rates as your business grows. Once your processing volume increases, you may have negotiating power. Some processors offer automatic volume discounts, while others require you to proactively request rate reviews.
Maintain PCI compliance to avoid non-compliance fees. PCI compliance is a standard requirement for handling card data securely.

Advanced Optimization Strategies

Beyond the basics, consider implementing these advanced strategies to further optimize your payment performance:

Offer multiple payment methods to meet customer preferences. For online sales, this can reduce cart abandonment. Commas offers a wide variety of payout options for merchants, including ACH, RTP, wire, PayPal, Venmo, Cash App, and crypto.
Optimize for mobile payments since many online transactions occur on mobile devices. Ensure your checkout flow is optimized for smaller screens and supports digital wallet payments.
Implement smart retry logic for declined transactions. Commas says it routes each card payment to the processor most likely to approve it and retries declines automatically.

Provider	Monthly Fee	Transaction Fee	Payout Speed
Stripe	$0	2.7% + $0.30	2 days
Toast	$0+	2.49% + $0.15	1-2 days
Clover	$14.95+	2.3% + $0.10	1-2 days
Braintree	$0	2.59% + $0.49	2-3 days
Whop	None	2.7% + $0.30	Next-day (ACH)

Common Mistakes to Avoid

Avoiding common pitfalls is just as important as implementing best practices when selecting a payment solution.

Contract and Pricing Mistakes

Signing long-term contracts with early termination fees: Month-to-month agreements are the modern industry standard. Be cautious of any provider requiring a multi-year commitment with hefty cancellation penalties.
Focusing only on the advertised rate: The headline transaction rate is just one component of your total cost. Factor in all monthly fees, compliance charges, and other costs to understand your true effective rate.
Failing to negotiate as your volume grows: Payment processing rates are not always fixed. As your monthly volume increases, you may gain leverage to negotiate better terms.

Operational Mistakes

Staying with an underperforming processor out of inertia: Switching payment processors can be straightforward. The fear of disruption keeps many merchants paying more than necessary or missing out on valuable features.
Overlooking payout speed: The difference between next-day and 3-day payouts can have a massive impact on your cash flow. Look for providers that offer fast and flexible payout options. Commas offers payouts via ACH, RTP, wire, PayPal, Venmo, Cash App, and crypto.
Ignoring fraud prevention: Chargebacks can be costly. Investing in fraud prevention tools and working with a processor that helps manage this risk can save significant money over time.

Conclusion

After extensive research, this guide's conclusion is clear: the most important factors for a small business payment solution are flexibility, reliability, and features that support growth. For businesses that also sell online, Commas is one option to compare, with checkout, payment links and invoicing in one account.

Commas includes tools for checkout pages and funnels as well as courses and an affiliate center. It also includes payment processing and customer financing. Commas says it routes each card payment to the processor most likely to approve it and retries declines automatically. For businesses selling higher-ticket items, its built-in financing options, supporting purchases from $30 up to $465,000, can make a significant difference. Payouts are flexible, with options including ACH, wire, PayPal, and even crypto.

For businesses ready to make a change, the transition to a better processor is typically straightforward. The long-term operational improvements often outweigh the minimal effort required to switch. Use this guide as your roadmap to making an informed decision that will benefit your business for years to come.

Frequently Asked Questions

What is the best card reader for a small business?

For businesses that also sell online, Commas is one option to compare for its customer financing on one-time products. Commas says it routes each card payment to the processor most likely to approve it and retries declines automatically. For businesses focused solely on physical retail, Square and Stripe offer excellent card reader hardware and POS systems.

What payment processor has the lowest fees?

Among processors with published flat rates, Whop's online rate is 2.7% + $0.30 per transaction. Stripe's standard online rate is 2.9% + $0.30, and PayPal's can be higher. Commas provides quotes on a per-business basis, so you should request a quote to compare. The lowest-fee option depends on your business model, transaction volume, and card types.

How do I switch payment processors?

Switching is simple: sign up with the new processor, integrate their system, test a few transactions to ensure everything is working correctly, and then go live. Once you're up and running, you can cancel your old account. Most migrations take only a few days.

Are there hidden fees in payment processing?

Yes, common hidden fees can include charges for PCI compliance, monthly statement fees, and chargeback fees. It's important to read your agreement carefully and ask for a full schedule of fees before signing up with any processor.