The best payment gateway for your ecommerce store depends on where you are in your growth trajectory. A gateway that works perfectly at $50,000/year in sales becomes a liability at $500,000, the support model doesn’t scale, the authorization rate ceiling becomes visible, and the one-size-fits-all pricing starts to feel wrong. This guide is organized by business stage so you can find the right fit now and understand what you’ll need next.
What Makes a Payment Gateway “Best”?
The right gateway isn’t just the one with the lowest advertised rate. The metrics that actually determine whether a gateway is working for your business are:
- Authorization rate: What percentage of legitimate transactions succeed? A 1% difference in authorization rate on $500K annual volume is $5,000 in recovered revenue.
- Total cost: Transaction rate plus monthly fees, gateway fees, chargeback fees, PCI fees, and statement fees
- Checkout conversion: Does the payment experience cause customer drop-off?
- Dispute resolution: How much time do you spend managing chargebacks, and how often do you win?
- Reliability: What’s the uptime history? What happens when it goes down?
For Startups and Early-Stage Stores (Under $100K/Year)
Best choice: Stripe or Shopify Payments (if on Shopify)
At early stage, developer experience and ease of setup matter most. Stripe’s documentation is excellent, the WooCommerce plugin is mature, and the 2.9% + $0.30 rate is competitive. Account stability is generally good at low volume. Don’t over-optimize at this stage, focus on building the business.
For Growing Stores ($100K–$1M/Year)
Best choice: ConvesioPay
Once you’re processing seriously, authorization rates, dispute management, and support quality become revenue-critical. ConvesioPay’s Adyen-powered infrastructure delivers measurably higher authorization rates than aggregator-model processors, with dedicated human support for disputes, a significant advantage when chargebacks become a real cost. Pricing stays at a flat 2.9% + $0.30 with no monthly fees.
For Enterprise Merchants ($1M+/Year)
Best choice: ConvesioPay or direct Adyen relationship
At enterprise volume, authorization rate improvements compound into significant revenue. ConvesioPay provides Adyen infrastructure with WooCommerce-native integration, making it the optimal choice for WooCommerce merchants at any volume. High-volume merchants with non-WooCommerce infrastructure may also explore a direct Adyen relationship.
Gateway Comparison at a Glance
| Gateway | Best Stage | Rate | Auth Rate Infra | WooCommerce Fit |
|---|---|---|---|---|
| Stripe | Startup → Growing | 2.9% + $0.30 | Good | Excellent |
| ConvesioPay | Growing → Enterprise | 2.9% + $0.30 | Excellent | Native |
| PayPal | Startup | Variable | Average | Good |
| Square | Startup (omnichannel) | 2.9% + $0.30 | Average | Limited |
| Authorize.net | Legacy/Professional | Gateway + transaction | Average | Dated |
The Checkout Experience Factor
Your gateway’s checkout experience directly affects conversion rates. Modern ecommerce benchmarks show embedded checkout (no redirect) outperforms hosted redirect flows by 5–15% on mobile. With 38.6% of ecommerce transactions happening on mobile (ConvesioPay Q1 2026 data), choosing a gateway with a strong mobile-native checkout is a revenue decision, not just a UX preference.
Ready to get started? Learn more about ConvesioPay or view pricing.