Related sections
Accepting payments
Refund payments
Refunding payments with SumUp is quickly and easy. Here's how to give your customer their money back if they change their mind.
Read ArticleConnect a printer
Connect a printer to use with SumUp so you can start printing receipts after transactions or reprint receipts from previous sales.
Read ArticleWhat is Strong Customer Authentication? (SCA)
3D Secure 2 (3DS2) and Strong Customer Authentication (SCA) are measures put in place to make online payments more secure. SCA verifies a customer's identity before confirming purchases with the intent to reduce electronic payment fraud.
Read ArticleAccept QR code payments
Share your QR codes with customers or print QR codes to display in order to start accepting payments with QR codes. Here’s how it works.
Read ArticleSet up QR codes
Create QR codes so you can quickly and easily share your payment details with customers. Here’s how to start using QR codes.
Read ArticleWhat are QR code payments?
QR codes allow you to easily take contactless payments no matter where you are, allowing customers to simply scan and pay.
Read ArticleIs my printer compatible?
Check out which standalone printers are compatible with SumUp so you can start printing receipts for your transactions.
Read ArticleResolve transaction issues
Why didn’t my transaction work? From connection issues to transaction timeouts, here’s how to quickly fix transaction problems.
Read ArticleContactless payments
Near field communication (NFC), otherwise known as contactless, allows you to take payments mostly without the need for PIN verification. Here's how it works.
Read ArticleAccept cash payments
The world isn't cashless yet. Here's how to accept cash payments with SumUp so you can track all your sales in one place, even when customers pay with cash.
Read ArticleAccepted payment methods
You're able to accept a variety of card schemes and payment methods with SumUp. See the full list of accepted payment types to see how your customer can pay.
Read ArticleAccept card payments
Accepting card transactions with a card reader is quick and easy with SumUp. Here’s all you need to know.
Read ArticleHow can I accept payments?
Check out all the payment options available to help you start taking payments with ease. From card readers to remote payments, here's how you can accept transactions.
Read ArticleWhat's smart tipping?
Smart tipping offers customer a set of tipping options based on the transaction amount. Here’s how to enable smart tipping and customise tipping rates.
Read ArticleAccept tips with SumUp
Tipping gives your customers the opportunity to show their appreciation for a job well done. So, at SumUp, we want to make accepting tips with your card reader as easy as possible.
Read ArticleSend receipts automatically
Automatically send receipts to certain customers after every purchase they make with you, without having to re-enter their details.
Read ArticleResend or reprint receipts
Provide a second copy of an old receipt or simply send or print a receipt from a previous sale. Here's how it's done.
Read ArticleProviding receipts with the SumUp app
Sending receipts with the SumUp App is super easy and allows you to send receipts for Air Card Reader transactions or cash payments. You can also quickly print receipts by connecting to a bluetooth printer.
Read ArticleServer error
In very rare cases, we may experience outages. Here's how to recognise outages and what you can do.
Read ArticleCharge a card reader with my Solo printer
The Solo printer comes with a USB-C cable and adaptor, which can be used to charge your printer and a card reader simultaneously. Here are the details.
Read ArticleProviding receipts with the SumUp 3G
Receipts are a key part of a transaction. Learn how you can send, resend and print receipts using your SumUp 3G Card Reader and 3G Printer.
Read Article