Build a Small Business Payment Stack with SumUp and Airwallex

Getting paid should be the simple part of running a business, but it rarely feels that way. You bolt together a random card reader, a bank account you opened in a hurry, and whatever invoicing tool someone told you to use three years ago. Then every time a client asks “How can I pay you?” you feel a little embarrassed by the answer.

Some links in this guide are affiliate links. I only recommend tools I actually use or would use in my own business.

You can do better without turning into a finance department. In this guide we will build a payment stack that covers everyday card payments and international transfers using two tools that stay out of your way. SumUp handles in person and simple online payments. Airwallex handles global payouts and multi currency accounts.

If you want to see where this fits into a full money system, read this small business payment stack article and how to accept payments as a small business. Those guides cover the higher level planning. Here we are focusing on a concrete setup you can build in a weekend.

Start with the basics. You need a business bank account that is separate from your personal money, simple bookkeeping, and a way to issue invoices people can understand. This business banking setup guide and how to create invoices that get paid faster will help you lock those in. Once you have that foundation, adding SumUp and Airwallex becomes much easier.

On the in person side, SumUp gives you a card reader and a lightweight point of sale app. That covers markets, pop up events, and clients who prefer to pay on the spot. You can also send payment links for remote work when a full invoice feels like overkill. The goal is to remove “I will send something later” from your vocabulary. The more you get paid at the moment of decision, the less you have to chase.

For online payments, you can either send those SumUp links directly or connect them to your existing website. If you already have an ecommerce store following your weekend ecommerce setup, you might keep that as the main storefront and use SumUp for side channels and quick custom charges. The key is that every payment lands in a system you can reconcile easily.

International payments are where most small businesses leak money and time. Traditional banks and PayPal style services often stack fees and hide the real exchange rate. Airwallex gives you multi currency accounts, better FX rates, and clean ways to pay contractors or partners overseas.

If you already read how to send money internationally for your business, you know the biggest gains come from reducing friction points. With Airwallex you can accept payments in different currencies, hold balances, and pay people in their local currency without juggling five different services. That matters if you work with designers, editors, or agencies in other countries or sell to customers abroad.

A simple setup looks like this:

• Your local clients pay in person or via link using SumUp.
• Online store sales go through your main ecommerce platform and land in your business bank account.
• International clients pay into your Airwallex accounts in their preferred currency.
• You pay overseas contractors from Airwallex, not from your bank’s expensive wire transfers.

You can connect these pieces with automation using Make. For example, when a SumUp payment comes in, Make can create an invoice record in your bookkeeping tool and tag it as paid. When an Airwallex payout happens, Make can log the transaction to your expense tracker. That keeps your records clean without forcing you into double entry.

If you are worried about adding yet another set of tools, remember that we are replacing messy overlaps. The goal is to move from five half working payment methods to two that each have a clear job. SumUp is your card and quick payment layer. Airwallex is your global money and payout layer.

The payoff is that you can answer “How do I pay you?” with confidence, whether the client is standing in front of you at a local event or sending a deposit from another country.