Best Payment Processor for E-Commerce Stores in 2026: Stripe, PayPal, Authorize.Net, Braintree & Coastal Pay Compared

Let’s Define What E-Commerce Stores Need Most From a Payment Processor

E-commerce payment processing requirements differ from in-person retail in several meaningful ways. Every transaction is card-not-present, which carries higher interchange rates. Checkout abandonment is the primary conversion metric affected by the payment experience. Fraud and chargeback risk is structurally higher than in-person. Customer payment method expectations vary by demographics – a store targeting younger buyers needs Klarna; a store with a strong social media following needs Apple Pay and Google Pay to convert mobile traffic; a B2B store needs ACH for large order invoicing.

The Seven Criteria That Define E-Commerce Payment Processor Quality

• Online card rate (all-in): The percentage plus per-transaction fee for online card-not-present transactions, including any separate monthly gateway fee amortized across typical transaction volume. The all-in number is what matters for cost comparison, not the headline rate alone.
• Checkout conversion features: Apple Pay and Google Pay buttons that appear on mobile checkout, one-click payment for returning customers with saved cards, BNPL options (Klarna, Afterpay) that increase conversion for higher-ticket items, and a low-friction hosted checkout flow that does not break on older mobile browsers.
• BNPL support: Buy-now-pay-later options are directly correlated with conversion rate increases for stores with average order values above $100. Offering Klarna and Afterpay at checkout without separate processor agreements is an increasingly standard expectation.
• Developer and integration quality: The quality of the API documentation, the breadth of platform plugins (WooCommerce, BigCommerce, Magento), and the ease of implementing custom checkout flows for stores with specific UX requirements.
• Fraud management tools: AVS and CVV verification, 3D Secure support, and the ability to configure custom fraud rules for the store’s specific product category and customer geography.
• Account stability: The probability of funds being held or the account being restricted at volume levels the store expects to reach within 12 to 24 months of growth. PayFac sub-account processors carry higher hold risk at higher volumes than true merchant account processors.
• Recurring billing for subscription stores: Many e-commerce stores have subscription components – subscription boxes, membership programs, or recurring replenishment. The processor must support card-on-file billing cycles without an additional platform fee.

Here’s How Each Processor Performs for E-Commerce

Stripe

Stripe is the default payment processor for developer-built e-commerce stores and the standard against which other processors are measured on API quality. Stripe’s documentation, developer ecosystem, and product breadth (Stripe Billing, Stripe Radar, Stripe Connect) are the strongest in this comparison. For a store being built by or with a development team, Stripe is the natural starting point.

• Online card rate: 2.9% + $0.30
• Monthly gateway fee: $0 (standard plan)
• Apple Pay / Google Pay: Yes – renders automatically in Stripe’s checkout JS
• BNPL (Klarna / Afterpay): Yes – available via Stripe configuration
• ACH: 0.8% capped $5
• Fraud tools: Stripe Radar included; Radar for Fraud Teams at extra cost
• Account type: PayFac sub-account
• WooCommerce / BigCommerce / Magento plugins: Yes

Best for: Developer-built custom e-commerce, SaaS with embedded checkout, subscription e-commerce needing Stripe Billing’s full feature set, and marketplaces using Stripe Connect.

Trade-off: 2.9% + $0.30 is the highest standard online rate in this comparison. PayFac account hold risk increases with volume. No native dual pricing program.

PayPal

PayPal’s primary e-commerce value is its consumer brand recognition and checkout conversion for customers who prefer to pay from their PayPal balance rather than entering a card. PayPal’s checkout button has a documented conversion lift for stores where a significant share of customers have PayPal accounts – particularly in consumer goods, fashion, and marketplace categories.

• Online card rate: 2.99% + $0.49
• Monthly gateway fee: $0
• Apple Pay / Google Pay: Limited – PayPal’s checkout primarily routes through PayPal balance or card-on-file
• BNPL: PayPal Pay Later (its own BNPL) – not Klarna or Afterpay
• ACH: Not available through standard PayPal checkout
• Fraud tools: PayPal Seller Protection for qualifying transactions
• Account type: PayPal account (well-documented 180-day hold policy on restricted accounts)
• WooCommerce / BigCommerce / Magento: Yes – widely integrated

Best for: Stores where the customer base has strong PayPal adoption and the PayPal button meaningfully increases conversion. Often used as a secondary payment method alongside a primary processor rather than as the sole option.

Trade-off: The $0.49 per-transaction fee is the highest in this comparison and makes PayPal expensive for stores with low average order values. The 180-day fund hold policy on account restrictions is a material operational risk at higher volumes. No ACH support.

Authorize.Net

Authorize.Net is a legacy standalone payment gateway owned by Visa, widely used by established e-commerce stores that were built on traditional payment infrastructure. It connects to a separate acquiring processor (the merchant chooses their own processor relationship) rather than being an all-in-one provider. This gives flexibility in processor choice but adds complexity and a separate monthly gateway fee.

• Online card rate: Depends on connected processor (interchange-plus typical for direct connections)
• Monthly gateway fee: $25/month + $0.10 per-transaction gateway surcharge
• Apple Pay / Google Pay: Yes – supported in Authorize.Net’s Accept.js and hosted checkout
• BNPL: Not natively available through Authorize.Net
• ACH: Available as a separate eCheck service
• Fraud tools: Advanced Fraud Detection Suite included
• Account type: Depends on connected processor
• WooCommerce / BigCommerce / Magento: Yes – widely integrated, long-established plugins

Best for: Established e-commerce stores already using Authorize.Net who have invested in platform integrations and want to keep the gateway while potentially changing their acquiring processor. Also appropriate for stores that want the advanced fraud detection suite and a separate, auditable gateway layer.

Trade-off: The $25/month gateway fee plus $0.10 per-transaction gateway surcharge adds $25 to $125+ to monthly costs before processing fees are counted. No native BNPL. Managing two relationships (gateway + processor) adds operational complexity compared to all-in-one options.

Braintree

Braintree is PayPal’s developer-focused subsidiary, offering a more flexible API than standard PayPal with support for custom checkout flows, marketplace payments, and multi-currency processing. Braintree’s transaction fee structure is different from other processors: the per-transaction fee is higher ($0.49) but the percentage is lower (2.59%), making it more cost-effective at higher average order values and less competitive at lower average ticket sizes.

• Online card rate: 2.59% + $0.49
• Monthly gateway fee: $0
• Apple Pay / Google Pay: Yes
• BNPL: PayPal Pay Later integration
• ACH: Available
• Fraud tools: Kount integration available (extra cost)
• Account type: PayFac sub-account under PayPal
• WooCommerce / BigCommerce / Magento: Yes

Best for: Enterprise e-commerce stores with high average order values (above $100 where the lower percentage advantage shows up), marketplace platforms, and stores needing multi-currency processing under a single developer API.

Trade-off: The $0.49 per-transaction fee is prohibitive for stores with lower average order values or high transaction frequency. PayFac sub-account under PayPal carries the same account stability considerations as PayPal itself. No native Klarna or Afterpay BNPL.

Coastal Pay

Coastal Pay provides a flat-rate all-in-one processing gateway with the broadest payment method suite in this comparison – all in one merchant account with no separate monthly gateway fee, no per-transaction gateway surcharge, and no additional activation fee per payment method.

• Online card rate: Flat 2.5% + $0.15 (all channels, same rate as in-person)
• Monthly gateway fee: $0
• Apple Pay / Google Pay: Yes – same flat rate, renders at checkout on compatible devices
• BNPL: Klarna and Afterpay – both available in one account
• Venmo: Yes
• ACH: Flat per-item rate – bundled in the same merchant account
• Coinbase (crypto): Yes
• Fraud tools: AVS, CVV, 3D Secure, Kount integration available
• Account type: True merchant account backed by 13 acquiring bank relationships
• WooCommerce / BigCommerce / Magento: Yes – 2,000+ total integrations
• Approval speed: Approximately 2 minutes

Best for: E-commerce stores that want the lowest flat rate with the broadest payment method suite (including Klarna, Afterpay, Venmo, and ACH) in one account, omnichannel retailers that also sell in-person at the same flat rate, and growing stores that want true merchant account stability as volume scales.

Side-by-Side Comparison: E-Commerce Payment Processors 2026

Here’s the Annual Cost at Three Realistic E-Commerce Store Volumes

The tables below show total annual processing cost (processing fees only, excluding software subscriptions, hardware, or fraud tool add-ons) at three e-commerce store volume levels.

Small Online Store: $15,000/Month, 300 Transactions, $50 Average Order Value

Growing Online Store: $50,000/Month, 1,000 Transactions, $50 Average Order Value

Established Online Store: $100,000/Month, 2,000 Transactions, $50 Average Order Value

At $100,000/month, the difference between Coastal Pay and PayPal is $14,040/year. At $50,000/month versus Stripe it is $4,200/year. These are real dollars recovered every year from a single vendor decision, with no reduction in checkout conversion, payment method breadth, or platform support.

Here’s How Checkout Conversion Differs by Payment Method Coverage

Rate is half the story. The other half is checkout conversion – what percentage of customers who reach your checkout page actually complete a purchase. Every payment method you do not offer is a potential customer who leaves because their preferred option is missing.

Mobile Checkout: The Apple Pay and Google Pay Impact

More than 60% of e-commerce traffic comes from mobile devices. On mobile, typing a 16-digit card number, expiry, CVV, and billing address into a small phone keyboard is the highest-friction checkout experience available. Apple Pay and Google Pay reduce mobile checkout to a single biometric tap. Stores that do not surface wallet payment buttons prominently on mobile are leaving conversion on the table on the majority of their traffic. Coastal Pay renders Apple Pay and Google Pay buttons automatically at checkout on compatible devices – no additional configuration per payment method.

BNPL: Klarna and Afterpay for Higher Average Order Values

Buy-now-pay-later options (Klarna, Afterpay) produce measurable average order value increases for stores selling items above $75 to $100. A customer who hesitates to spend $200 on a single card charge may complete the purchase when they can split it into four $50 payments. BNPL adoption is highest in fashion, electronics, beauty, home goods, and fitness categories. Coastal Pay bundles both Klarna and Afterpay in one merchant account. The merchant receives the full purchase amount immediately; the BNPL provider manages the customer’s installment relationship.

Venmo for Younger Demographic E-Commerce

Venmo has particularly strong adoption among millennial and Gen Z shoppers who are accustomed to social payments and may prefer Venmo over entering a card at a new e-commerce store. For DTC brands, apparel stores, and lifestyle product e-commerce targeting under-35 demographics, Venmo at checkout is a meaningful conversion signal. Coastal Pay includes Venmo in the same merchant account at no additional monthly fee.

ACH for High-Value B2B E-Commerce Orders

For e-commerce stores serving business customers – wholesale ordering, B2B supply, professional equipment – large orders paid by ACH reduce processing cost dramatically versus card. A $5,000 B2B order via ACH at Coastal Pay’s flat per-item rate costs approximately $0.50 to $1.50. The same order via card at 2.5% + $0.15 costs $125.15. For B2B e-commerce stores with 50 such orders per month, ACH availability at checkout can save $75,000+ per year in processing costs.

Here’s What to Know About Fraud Tools for E-Commerce Stores

E-commerce fraud is the single largest chargeback source for online stores. Every payment processor in this comparison offers basic fraud tools, but the depth varies significantly.

What Every E-Commerce Store Should Have Enabled

• AVS (Address Verification Service): Matches the billing address entered at checkout against the cardholder’s address on file at the issuing bank. Mismatches decline or flag the transaction. Reduces card-not-present fraud significantly. Available through Coastal Pay’s gateway at no extra cost.
• CVV verification: Requires the 3-digit (or 4-digit for Amex) security code that is not stored in the magnetic stripe or chip data. Means the fraudster needs the physical card, not just a stolen card number. Available through Coastal Pay’s gateway at no extra cost.
• 3D Secure (Verified by Visa, Mastercard SecureCode): Adds an additional authentication step for high-risk transactions – a one-time password or biometric verification sent by the card issuer. When 3DS authentication succeeds, liability for chargebacks shifts from the merchant to the card issuer. Coastal Pay supports 3DS. Contact 888-266-1715 to configure 3DS thresholds for your specific store and product category.
• Velocity rules: Limits on the number of transactions attempted from the same card, IP address, or email address within a defined time window. Blocks carding attacks (automated fraud attempts using lists of stolen card numbers). Configurable in the Coastal Pay Gateway.

Advanced Fraud Tools for Higher-Risk Categories

For e-commerce stores in categories with elevated fraud rates (digital goods, travel, luxury goods, electronics), Coastal Pay integrates with Kount – one of the leading AI-based fraud detection platforms. Kount’s machine learning models score transactions in real time based on device fingerprinting, behavioral biometrics, and a global network of transaction data. Contact 888-266-1715 to discuss Kount integration for your specific product category and risk profile.

Which E-Commerce Store Profile Fits Each Processor?

• Small DTC e-commerce store, just starting, low volume under $15,000/month: Coastal Pay (lowest all-in rate, instant 2-minute approval, all payment methods from day one) or Stripe (if developer-built with complex checkout requirements)
• Growing e-commerce brand, $30,000 to $100,000/month, WooCommerce or BigCommerce: Coastal Pay – the rate difference versus Stripe produces $3,360 to $8,400/year in savings at this volume range; plugin installation is straightforward
• E-commerce store with strong existing PayPal customer base: Use PayPal as a secondary payment method alongside Coastal Pay as primary processor – capturing the PayPal conversion lift without paying PayPal’s rate on all transactions
• Developer-built marketplace or platform with complex payment routing: Stripe (best API for marketplace/Connect use cases) or Braintree (for multi-party payment flows)
• Established store already on Authorize.Net with deep integration investment: Keep Authorize.Net as the gateway, connect Coastal Pay as the acquiring processor behind it, and eliminate the gap between Authorize.Net’s gateway and the merchant’s processing rate
• High average order value store ($150+) targeting millennials and Gen Z: Coastal Pay – Klarna, Afterpay, and Venmo all bundled alongside Apple Pay and Google Pay in one account
• B2B e-commerce or wholesale store with large individual orders: Coastal Pay – ACH at flat per-item rate for orders above $500 saves dramatically versus card processing

Explore Coastal Pay’s e-commerce gateway features, all supported payment methods, 2,000+ e-commerce platform integrations, transparent flat-rate pricing, and REST API documentation.

Get Approved in 2 Minutes – E-Commerce Flat Rate Processing

Or call for a cost comparison using your store’s actual volume: 888-266-1715

Frequently Asked Questions

What is the best payment processor for an e-commerce store?

For the lowest flat all-in rate with no monthly gateway fee, Klarna, Afterpay, Apple Pay, Google Pay, Venmo, and ACH all in one account, and 2,000+ platform integrations: Coastal Pay at flat 2.5% + $0.15 with $0 gateway fee. For developer-built stores needing the most flexible API and subscription billing: Stripe. For stores with a strong existing PayPal customer base: PayPal as a secondary option. At $50,000/month, Coastal Pay saves $4,200/year vs Stripe and $7,020/year vs PayPal.

Does Coastal Pay work with WooCommerce, BigCommerce, and Magento?

Yes. Coastal Pay integrates with WooCommerce (plugin), BigCommerce (payment provider configuration), and Magento 2 (extension). All three support Apple Pay, Google Pay, and all enabled alternative payment methods at checkout. Coastal Pay’s 2,000+ integration directory also covers many other e-commerce platforms and custom checkouts via REST API. Contact 888-266-1715 to confirm your specific platform and version before setup.

What is the cheapest payment processor for an online store?

At $50,000/month with 1,000 transactions: Coastal Pay $1,400/month, Stripe $1,750/month, PayPal $1,985/month, Authorize.Net ~$1,875/month including gateway fee. At $100,000/month: Coastal Pay $2,800 vs Stripe $3,500 ($8,400/year difference) vs PayPal $3,970 ($14,040/year difference). Coastal Pay produces the lowest all-in cost among the providers compared at every volume level shown above.

Does Coastal Pay support buy-now-pay-later at online checkout?

Yes. Coastal Pay supports Klarna and Afterpay in one merchant account with no separate activation fee. BNPL options appear at checkout alongside standard card and wallet options when enabled in the Coastal Pay Gateway dashboard. The merchant receives full payment immediately; the BNPL provider manages the customer’s installment schedule. Contact 888-266-1715 to enable BNPL and confirm current Klarna and Afterpay terms.