How to Choose a Payment Gateway for Your Business: Complete Guide
Choosing a payment gateway is a decision that shapes your fees, your security posture, and your ability to sell through new channels for years, not just the per-transaction cost shown on a homepage. This guide pulls together the criteria that actually matter (pricing model, your sector, sales channel, security, and activation timelines) into a single decision path, linking to RoxPay's in-depth guides on each topic, from high risk sectors to physical POS terminals, all the way to a direct comparison with the main competitors.
Quick checklist: what to verify before choosing a payment gateway
| Criterion | Why it matters | What to avoid |
|---|---|---|
| Pricing model | Transparent IC++ separates markup from interchange, blended hides both in one rate | "All-inclusive" rates with no breakdown of interchange and scheme fees |
| Your business sector | Some sectors need extra documentation or are declined by generalist providers | Providers that promise universal acceptance and then decline after you sign |
| Sales channel | Online, in-person, or both require different integrations and hardware | Two separate contracts with two providers for the same business |
| Security and compliance | PCI DSS Level 1 and 3D Secure 2.0 reduce fraud and legal liability | Providers with no publicly verifiable security certifications |
| Activation timeline | 1-2 business days with a complete application is the industry standard | Promises of instant activation with no document verification at all |
Checklist based on the criteria RoxPay uses during underwriting; actual timelines vary by sector and how complete the application is.
Step one: define your sector, channel, and sales volume
Before comparing providers, pin down three variables that determine which options are actually available to you. Sector is the first filter: if you operate in a high risk sector such as gambling, crypto, CBD, or forex, most generalist providers decline the application outright, while RoxPay reviews these cases individually instead of declining the application upfront (see the [high risk merchant account providers guide](/en/resources/high-risk-industry-verticals-guide)). If your sector falls under restricted-but-not-high-risk categories instead (travel, real estate, live streaming, and 24 other verticals), the [accepted business verticals guide](/en/resources/business-verticals-accepted-guide) lists the documentation required for each.
Sales channel determines the technical infrastructure you need: an online store needs an online integration (hosted, API, or payment link, see the [ecommerce payment integration guide](/en/resources/ecommerce-payment-integration-guide)), while a physical storefront needs a POS terminal (covered in the [Android POS terminal guide](/en/resources/android-pos-terminal)). Many businesses, from restaurants to retail stores, need both channels with the same provider to avoid running two separate contracts.
Compare the pricing model before the advertised percentage
The percentage a provider shows on its homepage isn't directly comparable to another provider's if the underlying pricing model is different. Blended pricing applies a single flat percentage to every transaction, regardless of card type, the merchant's risk profile, or processed volume: it's simple to understand but hides the provider's real margin. IC++ pricing instead separates three components: interchange set by the card networks (covered in the [interchange fees guide](/en/resources/what-are-interchange-fees-how-they-work)), Visa/Mastercard scheme fees, and the provider's markup: making it clear exactly who gets what.
For a direct comparison between specific providers active in Italy, including verifiable data on fees and contract terms, see the [payment gateway comparison guide](/it/risorse/confronto-payment-gateway-italia) and the [payment gateway fees comparison guide](/en/resources/payment-gateway-fees-comparison).
Check the provider's security, compliance, and certifications
Two certifications separate a trustworthy provider from one that only meets the bare minimum. PCI DSS Level 1 certification is the highest level defined for payment data security and applies to providers processing the largest volumes: always verify the certificate number in the official PCI SSC registry, don't just trust the badge on a website. Native support for 3D Secure 2.0, the authentication required under PSD2 for most European card transactions, reduces both fraud and unauthorized-transaction chargebacks (detail in the [3D Secure payment gateway guide](/en/resources/3d-secure-payment-gateway)).
A provider that can't produce a verifiable PCI DSS certificate number, or that treats 3D Secure as a paid add-on rather than a default, is a warning sign, not just a pricing difference.
Weigh POS hardware if you also sell in a physical location
If your business has (or plans to have) a physical storefront, the right provider needs to offer a POS terminal compatible with your operations, not just an online gateway. Modern Android POS terminals handle contactless payments, QR codes, and integration with common point-of-sale software, but vary widely on monthly fees, settlement times, and hidden costs (covered in the [POS costs guide](/en/resources/pos-costs-fees-commissions-hidden-charges)). Always check whether renting or buying the terminal makes more sense for your expected volume before signing a multi-year contract.
Documents and timelines: what to expect during activation
A complete application from the first submission dramatically shortens activation time compared to one that needs follow-up documents, since every additional request from underwriting restarts part of the verification.
Frequently Asked Questions
How do I choose the best payment gateway for an ecommerce business?
Start with your sector (check whether it falls under standard or restricted categories), then compare pricing models (transparent IC++ vs blended) on your real transaction volume rather than the advertised rate. Finally, check PCI DSS certification and native 3D Secure 2.0 support, and how long integration with your ecommerce platform takes.
How much does it cost to activate a payment gateway?
There's no single standard activation fee across the market: many providers, including RoxPay, charge no setup fee, while per-transaction fees follow the chosen model (IC++: €0.15 + from 0.35% to 0.85% for RoxPay, or a flat blended percentage for other providers). The real cost depends on volume, sector, and sales channel: always request a quote based on your specific volume.
How can a small business start accepting online payments?
A small business can start with a simple integration like a hosted gateway or a payment link, which requires no technical development, and move to a fuller API integration once volume justifies it. The [ecommerce payment integration guide](/en/resources/ecommerce-payment-integration-guide) compares every option available.
What do I need to open a merchant account?
You typically need incorporation documents and a company registration extract, identification for beneficial owners, bank statements from the last three months where available, and, for regulated sectors, the relevant operating licence. A complete application from the first submission brings approval down to 1-2 business days with RoxPay.
How do I know if my sector is accepted by a provider?
Always check the provider's official accepted-categories page before starting an application, rather than relying on generic claims like "we accept all sectors". RoxPay publishes the full list on its [accepted business categories](/en/general-information/accepted-business-categories) page, distinguishing between standard categories and restricted ones that require extra documentation.
How long does it take to activate a payment gateway?
With RoxPay, typically 1-2 business days for a complete application. Timelines extend when documents are missing (an operating licence for regulated sectors, beneficial owner identification) or when technical integration requires custom API development instead of an already-certified plugin module.
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Request a free consultation to choose the right payment gateway for your business. The RoxPay team responds within 24 hours. Contact us at /en/contact.
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