PaySlate Payments: 6 Gateways, 21 Ways to Get Paid
PaySlate connects your WordPress invoices to the payment gateway you choose. The free plugin connects Stripe and Square. Pro adds PayPal, Checkout.com, Paddle and Lemon Squeezy. Add your keys and your clients can pay an invoice with the card or wallet they already use. Cards work the moment you connect. Wallets and pay-later options follow whatever your gateway account has switched on.
Choose your gateway
PaySlate does not lock you to one processor. You select a gateway in Settings, enter your keys, and PaySlate handles the rest: hosted checkout, webhooks, receipts and subscription renewals. Two gateways come with the free plugin, and Pro unlocks four more.
Stripe Free
The broadest reach. Cards, Apple Pay and Google Pay, plus Klarna, Alipay, WeChat Pay, Amazon Pay and Cash App Pay. Best if you sell internationally.
Square Free
Strong for small businesses that also sell in person. Cards, Apple Pay and Google Pay, plus Cash App Pay and Afterpay from Square’s own ecosystem.
PayPal Pro
The name your clients already trust, and the only route to Venmo. Useful when customers prefer paying without handing over card details.
Checkout.com Pro
Enterprise-grade card processing with wide international method support and granular control over how payments are routed.
Paddle Pro
Merchant of record. Paddle sells on your behalf and takes on EU VAT and US sales tax registration, filing and remittance.
Lemon Squeezy Pro
Merchant of record built for software sellers. Like Paddle, it handles global tax compliance so you never file a VAT return.
On tax: with Stripe, Square, PayPal and Checkout.com you are the merchant and you handle your own tax. With Paddle and Lemon Squeezy the gateway becomes the seller of record and handles it for you. That single choice is worth more to most invoicing businesses than any difference in card rates.
What your clients can pay with
Twenty-one methods across cards, wallets and pay-later. Exact availability follows your gateway account, your country and your currency.
Card networks
Every gateway PaySlate supports accepts the major card networks. Your client types their card into a hosted, PCI-compliant checkout and the invoice is marked paid automatically.
Visa
The world’s largest card network, accepted in more than 200 countries. For most clients it is simply the default way to pay.
History
Visa began in 1958 when Bank of America mailed the first BankAmericard to 60,000 residents of Fresno, California. Licensed to banks through the 1960s, it was unified under the Visa name in 1976. Visa issues no cards itself; it runs VisaNet, the network that authorizes and settles for the banks that do.
Mastercard
Accepted virtually everywhere Visa is. Together the two networks form the backbone of card acceptance in almost every market.
History
Founded in 1966 when a group of banks formed the Interbank Card Association to compete with BankAmericard. Known as Master Charge until 1979, it now runs a worldwide processing network from Purchase, New York, issuing credit and debit products through partner banks.
American Express
Popular with business travelers and corporate accounts. Accepting Amex means never turning away a client who wants the invoice on their rewards card.
History
Founded in 1850 in Buffalo, New York, as an express freight and mail business, Amex spent its first century moving money orders and travelers cheques. Its first charge card arrived in 1958. It runs a closed loop, acting as both network and issuer, which funds its rewards and travel perks.
Discover
An everyday cashback favorite in the United States, with international reach through network alliances.
History
Launched in 1985 by Sears and introduced during the 1986 Super Bowl with a then-radical pitch: no annual fee and cash back. It built its own network, Pulse, and acquired Diners Club International in 2008. Capital One announced an agreement to acquire Discover in 2024.
Diners Club
The card that started the industry. Now niche, but still recognized worldwide for travel and business spending.
History
Founded in 1950 in New York by Frank McNamara and Ralph Schneider, it was the first independent multi-merchant charge card, born from the idea of settling a restaurant bill without cash. Balances were paid in full monthly rather than revolving. It is owned today by Discover Financial Services.
JCB
The card of choice in Japan and widely held across East and Southeast Asia. Essential if you invoice Japanese clients.
History
Japan Credit Bureau launched in Tokyo in 1961 and is the only international card scheme to originate in Japan. It expanded abroad through acceptance partnerships, so a card issued in Tokyo works across much of the world.
UnionPay
The largest card network on earth by cards in circulation. Invaluable if your clients are in China or travelling from it.
History
Founded in 2002 in Shanghai under the People’s Bank of China to standardize the country’s card market. It has issued roughly 10 billion cards, more than Visa and Mastercard combined, and is accepted in more than 180 countries and regions.
Maestro
A long-serving European debit brand now being retired. Cards already issued stay valid until they expire, so PaySlate keeps accepting them.
History
Launched by Mastercard in 1991 as the world’s first global point-of-sale debit brand, Maestro was a staple of everyday banking in Germany, the Netherlands, Belgium and Central Europe. Designed for the physical checkout, it never adapted cleanly to e-commerce. Mastercard began retiring it in 2023, replacing it with Debit Mastercard.
Digital wallets
Wallets remove the biggest source of checkout friction: typing a card number. Your client authenticates with their face or fingerprint and the invoice is settled in one tap.
Apple Pay
Stripe, Square, Checkout.com
One tap on an iPhone, Apple Watch or Mac. Tokenized, so you never handle the real card number.
History
Launched by Apple in 2014 for stores, apps and the web, authenticated with Face ID or Touch ID. It settles as an ordinary card payment behind the scenes and is heavily used across the United States, United Kingdom, Australia, Canada and Western Europe.
Google Pay
Stripe, Square, Checkout.com
The Android equivalent, and enormous in India where it rides the UPI real-time rails.
History
It began as Google Wallet in 2011, relaunched as Android Pay in 2015, unified as Google Pay in 2018 and later folded back into the Google Wallet brand. It tokenizes the underlying card, so merchants receive it as a standard payment.
Samsung Pay
Any gateway, as a card
Galaxy owners pay from Samsung Wallet and it arrives as an ordinary tokenized card payment.
History
Introduced in 2015, it launched with MST, a technology that could transmit to older magnetic-stripe terminals as well as NFC readers. That capability is being phased out and the product has largely merged into Samsung Wallet. It is a default for a huge share of South Korea.
PayPal
PayPal (Pro)
Many clients simply prefer the familiar button. They pay without sharing card details with you at all.
History
Founded in 1998 as Confinity, merged with X.com in 2000, public in 2002, acquired by eBay the same year and spun back out in 2015. It serves well over 400 million active accounts and owns both Venmo and Braintree.
Venmo
PayPal (Pro), United States
Huge with American millennial and Gen Z clients who keep a balance in the app.
History
Founded in 2009 in Philadelphia, acquired by Braintree in 2012 and by PayPal in 2013. Its social feed, where payments appear with emojis and captions, made it iconic. It remains United States only, but within that market it is enormous.
Cash App Pay
Square, Stripe
Clients pay straight from their Cash App balance or Cash Card. Natural fit if you already use Square.
History
Launched in 2013 as Square Cash, it grew from peer-to-peer transfers into a full financial hub with the Cash Card, stock investing and bitcoin, all tied to a user’s cashtag. It is a cultural fixture among younger Americans and has expanded to the United Kingdom.
Amazon Pay
Stripe
Clients check out with the account, addresses and cards already stored with Amazon. No new account to create.
History
Launched in 2007 to extend Amazon’s trust and stored payment details to third-party merchants. It even supports voice payments through Alexa, and has been a growth focus in India and parts of Europe.
Alipay
Stripe, Checkout.com
Close to essential for reaching clients in China, and it follows Chinese customers abroad.
History
Launched in 2004 by Alibaba and now run by Ant Group, Alipay began as an escrow service that made shopping on Taobao safe. It grew into a super-app serving well over a billion users, bundling QR payments, savings, credit and insurance into one screen.
WeChat Pay
Stripe, Checkout.com
The other half of China’s mobile payment duopoly, built into the messaging app a billion people open daily.
History
Launched in 2013 by Tencent inside WeChat. Its breakout moment came in 2014 with digital red packets, a viral twist on the tradition of gifting money that drove mass adoption almost overnight.
Pay later
Buy now, pay later lifts average invoice value, because a client will approve a larger figure when the cost is spread. You are paid in full upfront either way.
Klarna
Stripe, Checkout.com
Europe’s pay-later leader, with pay-in-3, pay-in-4 and longer financing across more than 40 countries.
History
Founded in Stockholm in 2005 by Sebastian Siemiatkowski, Niklas Adalberth and Victor Jacobsson. It now reaches more than 150 million consumers and hundreds of thousands of merchants, and listed publicly in 2025. It is strongest in the Nordics and Germany, with fast growth in the United States.
Afterpay
Square, Stripe
Four equal interest-free installments every two weeks. You are paid upfront. Trades as Clearpay in the United Kingdom.
History
Founded in Melbourne in 2014 by Nick Molnar and Anthony Eisen, Afterpay pioneered the pay-in-4 model. It earns from merchant fees rather than customer interest, which resonated with shoppers wary of traditional credit, and was acquired by Block in 2022.
How it works
Connect your gateway in PaySlate Settings, then send an invoice as normal. Your client opens the invoice, chooses how to pay, and completes the payment on the gateway’s own secure checkout. PaySlate records the payment against the invoice, marks it paid, and emails the receipt. Card details never touch your WordPress site.