9 Best Payment Gateways for Small Business of 2026

Stripe is the most flexible gateway for an online seller that wants one flat card rate and control over when money lands. Standard US card payments cost 2.9% + 30¢ with no monthly fee, and Payment Links use the same rate, so a seller can start with a link and move to an embedded checkout later without a price change. Payouts are where Stripe stands out: you can choose manual, daily, weekly or monthly schedules, and daily payouts move available funds every business day. Stripe also documents next-day settlement and Instant Payouts for eligible accounts. The trade-offs are cost on certain flows and the wait at the start. Cards typed into the Dashboard cost 3.4% + 30¢, Hosted Invoices start at 3.3% + 30¢, and Stripe says the first payout typically completes within 7 to 14 days depending on industry, country and risk level. Setting up custom checkouts also takes more technical work than a hosted store add-on.

Helcim is the most cost-focused option on this list for sellers who process enough volume to care about margins. Instead of a flat rate, it charges interchange plus a published markup: keyed and online cards cost interchange + 0.50% + 25¢ for the first $50K a month, falling to 0.45% + 20¢ from $50K to $100K and lower above that, applied automatically. There are no monthly, minimum, software or statement fees, and no contracts or cancellation fees. Payouts are a strong point too, with next-business-morning deposits on credit and debit transactions at no charge. The toolkit covers Online Checkout, Payment Pages, invoicing, a virtual terminal and recurring billing, though subscriptions add 0.4% per transaction. The catch with interchange-plus is predictability: the cost of a sale depends on the card used, so monthly statements take more reading than a flat 2.9% model. Chargebacks are free if you win and $15 if you lose.

Shopify Payments is the default choice for any seller whose store already runs on Shopify, mainly because the alternative costs extra: Shopify charges a 2% third-party transaction fee when you use another payment provider. Turning it on adds cards, wallets, installments and crypto at checkout, plus Shop Pay, which Shopify says has 250M+ buyers and up to 50% higher conversion than guest checkout. Customers can pay in 130+ currencies while you are paid in your own, and the same account covers in-person sales, so online and store revenue sit in one view. Payouts go to a checking account or a Shopify Balance account on a daily, weekly or monthly schedule. The limits are clear: it only works inside Shopify, some countries have a minimum payout amount, and card rates depend on your Shopify plan. Shopify's pricing page showed local currency from our location, so we list the USD rates as pending.

Square makes the most sense for a seller who takes payments at markets, in a shop or on invoices as well as online. The Square Free plan costs $0 per location and covers card payments online, by invoice and in person, so one account and one catalog handle every channel. The trade-off is the online rate: card payments made online or through an invoice cost 3.3% + 30¢ on Free, falling to 2.9% + 30¢ on Plus at $49 per location per month or Premium at $149. Payments taken through Square's APIs cost 2.9% + 30¢ on every plan. Payouts are simple to understand: standard transfers arrive the next business day, and instant or same-day transfers cost 1.95% per transfer. Square also states it won't hold funds based on the amount, frequency or type of transaction. For a purely online store, Stripe's flat 2.9% + 30¢ without a subscription is usually cheaper.

PayPal earns its place because many shoppers look for its button at checkout, and one account adds PayPal, Venmo and Pay Later options next to card payments. That reach costs more than a card-only gateway. Standard credit and debit card payments cost 2.99% plus a fixed fee, PayPal Checkout and Pay with Venmo cost 3.49% plus a fixed fee, and Pay Later options cost 4.99% plus a fixed fee; the US dollar fixed fee is 0.49 USD. Sellers who move to Advanced Credit and Debit Card Payments get a lower 2.89% plus fixed fee rate. Getting money out is free on standard withdrawals to an eligible bank account when no currency conversion is involved, and instant withdrawals cost 1.50% of the amount. PayPal's fee page also warns it may raise the percentage part of your rate if an account draws a high share of complaints, reversals or chargebacks. Most stores use it alongside a card gateway rather than as their only processor.

Braintree is PayPal's gateway for businesses that build their own checkout and want cards, wallets, PayPal and Venmo behind one integration. Card and third-party wallet payments cost 2.89% + 29¢ for standard merchants, a little below PayPal's own standard card rate, and there is no monthly fee. ACH direct debit costs 0.75% per transaction, capped at $5, which makes it a cheaper way to collect large orders by bank. Venmo payments are available in the US at 3.49% + 49¢, and PayPal transactions follow your PayPal account terms. Extra costs apply for cross-border sales: payments presented in a non-USD currency add 1%, and cards issued outside the United States add another 1%. Chargebacks cost $15. The main barrier for small sellers is setup, since Braintree is built for developers and custom checkouts rather than plug-in store apps.

Adyen is the gateway on this list built for the widest reach. Every transaction carries a fixed $0.13 processing fee plus a payment method fee, and for major cards that fee is quoted as Interchange+ + 0.60%, meaning the card networks' costs are passed through with a published markup. There are no setup or monthly fees, and Adyen lets merchants choose when and in which currency they settle, which helps sellers with costs in several currencies. The pricing page lists fees per payment method and country, so a seller can check local options such as wallets or buy now, pay later before launching in a new market. For a typical small online seller, the fit is weaker: integration is developer-led, the $0.13 fee applies before method costs, and interchange-based pricing makes each sale's cost vary. Adyen suits brands already selling across several countries more than a first store.

Authorize.net is a long-established gateway that suits businesses with an existing merchant account or with phone and recurring orders. Two plans cover most cases: All-in-one costs $25 per month plus 2.9% + 30¢ per transaction and includes a merchant account, while Gateway only costs $25 per month plus 10¢ per transaction and a 10¢ daily batch fee for sellers who already have one. There are no setup fees and no early termination fee. The feature set leans toward card-not-present sales: a Virtual Terminal for phone orders, digital invoicing, a Simple Checkout button, rules-based Advanced Fraud Protection, Account Updater to keep stored cards current, and recurring or installment billing. Authorize.net also highlights a live support team available around the clock. For a new online seller, the All-in-one card rate equals Stripe's but adds $25 a month, so it pays off mainly when Gateway only pricing against a negotiated merchant account comes out cheaper.

Stax flips the usual pricing model: instead of a percentage markup on each sale, you pay a monthly subscription and get direct-cost interchange with a 0% markup, plus cents per transaction. The subscription is $99 per month for up to $150,000 a year in processing, $139 per month from $150,000 to $250,000, and $199+ per month above that. Included tools cover API keys, customized invoicing, Text2Pay mobile payments, hosted payment pages, payment links, buttons and QR codes, stored card updates, accounting reconciliation and built-in surcharging compliance. ACH is an add-on at 1% per transaction, capped at $10. The model rewards volume: a seller processing well over $100,000 a year can save compared with flat rates, while a new store with a few thousand dollars in monthly sales will pay more in subscription than it saves. Stax does not publish its per-transaction cents on the pricing page, so request a quote before switching.