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E-commerce

Payment Gateways: A Guide to Collecting Payments Online in 2026

Complete comparison of payment gateways: Stripe, PayPal, MercadoPago and more. Fees, integration, security, and which one to choose for your business.

You can have the best product, the fastest website, and a perfect marketing strategy. But if your payment process fails, creates distrust, or doesn't offer the method your customer prefers, you lose the sale at the finish line.

70% of shopping carts are abandoned, and according to the Baymard Institute, the main reason is a complicated checkout process or lack of trust. Choosing the right payment gateway isn't a technical detail — it's a strategic decision that directly impacts your revenue.

In this guide, we compare the most relevant payment gateways for digital businesses in Latin America and the Spanish-speaking market, with real data on fees, ease of integration, and user experience.

What Is a Payment Gateway and How Does It Work?

A payment gateway is the secure intermediary between your customer and your bank. When someone makes a purchase on your website:

  1. The customer enters their card details or selects a payment method
  2. The gateway encrypts the data and sends it to the payment processor
  3. The processor verifies funds with the card-issuing bank
  4. The transaction is approved or declined
  5. The money is deposited into your account (minus the fee) within 2–7 days

All of this happens in under 3 seconds. Your customer never sees the complexity behind it. They just see a fast, secure payment form.

Payment Gateway Comparison 2026

Stripe

The preferred gateway for startups and tech companies worldwide.

  • Fee: 2.9% + $0.30 per transaction (USA), varies by country
  • Payment methods: Cards, Apple Pay, Google Pay, bank transfers, SEPA, local wallets
  • Payout time: 2 business days (with Express: instant for an additional fee)
  • Subscriptions: Robust native system with plan management, free trials, and upgrades
  • API: The best-documented in the industry. Flexible integration for any workflow
  • Ideal for: SaaS, marketplaces, e-commerce with international operations

Key advantage: Stripe Checkout offers a pre-built payment experience that converts up to 30% more than custom forms because it's optimized with data from millions of transactions.

PayPal

The most recognized gateway by consumers globally.

  • Fee: 3.49% + $0.49 per transaction (standard merchant rates)
  • Payment methods: PayPal balance, cards, Venmo, PayPal Credit, bank accounts
  • Payout time: Instant to your PayPal account, 1–3 days to transfer to bank
  • Subscriptions: Available but less flexible than Stripe
  • Consumer trust: 60% of online shoppers trust more when they see PayPal as an option
  • Ideal for: B2C e-commerce, international sales, freelancers

Key advantage: Shoppers with a PayPal account can pay in 2 clicks without entering card details, significantly reducing friction.

MercadoPago

The dominant option in Latin America.

  • Fee: 3.99–4.99% per transaction (varies by country and payout timeline)
  • Payment methods: Cards, bank transfers, cash (OXXO, Rapipago), MercadoPago balance, interest-free installments
  • Payout time: Instant with higher fee, or 14–30 days with reduced fee
  • Installments: Allows offering up to 12 interest-free installments (the seller absorbs the cost)
  • Ideal for: E-commerce in Latin America, especially Argentina, Mexico, Brazil, Colombia

Key advantage: Offers cash payments for customers without cards (30–40% of the LATAM population) and interest-free installments that can increase average order value by 50%.

Other Relevant Options

Gateway Fee Best For
Square 2.6% + $0.10 Businesses with physical + online point of sale
Wompi 2.9% + COP $900 Colombia, with PSE and Nequi integrated
Conekta 2.9% + MXN $2.50 Mexico, with OXXO and SPEI payments
dLocal Varies by country Global companies selling in emerging markets

Which Gateway Should You Choose? A Guide by Business Type

Selling only in the USA/Europe

Stripe as primary + PayPal as alternative. Stripe handles the main checkout and subscriptions. PayPal captures shoppers who prefer paying with their balance. Together, they cover virtually 100% of buyers.

Selling in Latin America

MercadoPago as primary + Stripe or PayPal as international alternative. MercadoPago covers essential local payment methods (cash, transfers, installments). If you also sell to the USA/Europe, add Stripe.

Running a SaaS with subscriptions

Stripe, without a doubt. Its subscription billing system is the most comprehensive: plan management, trials, upgrades/downgrades, proration, dunning (failed payment retries), webhooks for every event, and a customer portal for self-service.

Selling on a marketplace or with multiple sellers

Stripe Connect. Specifically designed for platforms that need to split payments between the platform and sellers, with integrated KYC and per-seller tax reporting.

Selling low-value digital products

Stripe or Lemon Squeezy. For ebooks, courses, templates, or downloads. Lemon Squeezy also handles international taxes (VAT, sales tax) automatically.

Checkout Optimization to Maximize Conversions

The gateway is only part of the equation. The checkout design determines whether the customer completes the purchase:

1. Single-page checkout

Minimize the number of steps. A 1–2 step checkout converts up to 21% more than a 4–5 step one. Show order summary, shipping details, and payment on a single view.

2. Mandatory guest checkout

Don't force account creation to make a purchase. 24% of users abandon if asked to register before paying. Offer the option to create an account after the purchase.

3. Multiple payment methods

Offer at least 3 options. Each additional payment method can increase conversions by 5–10%. Prioritize: credit/debit card, digital wallet (Apple/Google Pay), and a local method (bank transfer/cash in LATAM).

4. Visible security badges

Display SSL badges, PCI compliance seals, and payment gateway logos. 17% of cart abandonments are due to lack of trust in site security.

5. Smart autofill

Use browser address autofill for shipping fields. Implement automatic card type detection (Visa, Mastercard) when the first digits are entered. Every field you eliminate reduces friction.

6. Clear error handling

If a card is declined, explain why and offer alternatives: "Your card was declined. Try a different card or pay with PayPal." Don't show generic errors like "Processing error."

Online Payment Security: What You Must Comply With

Security is non-negotiable when handling money:

  • PCI DSS Compliance: Mandatory standard for processing cards. If you use Stripe or PayPal in hosted mode (gateway-provided forms), they handle compliance for you. If you process card data on your own server, you need your own certification
  • 3D Secure 2.0: Additional authentication that verifies the cardholder. Reduces fraud by 80%, and chargeback liability shifts to the issuing bank
  • Mandatory SSL/TLS: The entire checkout must run over HTTPS with a valid certificate
  • Tokenization: Never store card numbers. Gateways convert data into tokens that only they can decrypt
  • Fraud monitoring: Stripe Radar and PayPal have machine learning systems that automatically detect fraudulent transactions

Hidden Costs You Should Consider

The transaction fee isn't the only cost:

  • Chargebacks: If a customer disputes a payment, you're charged $15–$25 per case regardless of the outcome. Too many chargebacks can get your account blocked by the gateway
  • Currency conversion: If you receive payments in one currency and withdraw in another, there's an additional 1–2% spread
  • Failed payments: Expired, insufficient-funds, or blocked cards generate failed payments — you don't pay a fee, but you lose the sale. A good dunning system (automatic retries) recovers 30–40% of these
  • Taxes: In some countries (like the EU), you must charge and report digital VAT. Tools like Stripe Tax or Lemon Squeezy automate this
  • Integration and maintenance: If you need custom development to integrate the gateway, factor in the initial cost ($500–$3,000) and annual maintenance

Technical Integration: What Your Developer Needs

Integration complexity varies depending on the approach:

Method Complexity Timeline Customization
Hosted checkout Low 1–3 days Limited (logo, colors)
Embedded checkout Medium 3–7 days High (within your design)
Direct API High 2–4 weeks Full (complete control)

For most businesses, the embedded checkout is the sweet spot: it looks like part of your site, handles PCI security automatically, and integrates in less than a week.

Implement Online Payments with AvilaDev

At AvilaDev, we integrate payment gateways that maximize your conversions:

  • Strategic selection: We recommend the ideal gateway based on your market, volume, and business model
  • Optimized checkout: We design proven payment flows to maximize completion rates
  • System integration: We connect the gateway with your inventory, CRM, invoicing, and shipping system
  • Subscriptions and billing: We set up plans, trials, upgrades, and automatic dunning for recurring models
  • Guaranteed security: PCI compliance, 3D Secure, tokenization, and fraud monitoring included

Need to implement online payments for your business or improve your checkout conversion rate? Contact us for a free consultation and we'll help you choose and integrate the best payment solution.

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