Square custom pricing pressures Flatpay

Square can treat payment processing as the entry point to a larger merchant relationship, which lets it cut rates on bigger accounts without relying on payments alone for profit. Once a merchant is doing more than roughly £200,000 a year, the sale is no longer just about a card reader and a headline fee. It becomes a bundle of POS software, online checkout, hardware discounts, and future upsells like lending, which makes Flatpay's simple 0.99% pitch harder to defend on price alone.

• Square publicly offers custom transaction pricing in the UK above £200,000 in annual card sales, and it pairs that with free core POS software and hardware discounts. That gives sales teams room to undercut listed rates when a merchant has enough volume to matter.
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• Flatpay is moving into the same band with custom rates above €200,000, but its model carries more service cost up front. It ships hardware, installs the setup on site, and trains staff, which helps win small brick and mortar merchants but leaves less room to cut processing margins on larger deals.
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• This is the same pressure already visible from SumUp, which matches Flatpay's 0.99% rate for merchants above €100,000 and has reached roughly $600 million in run rate revenue. In practice, larger merchants now have multiple providers willing to negotiate, so pricing power shifts away from the processor.
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The next phase of competition will center less on who has the cleanest flat rate and more on who can bundle the most value around payments. Flatpay's path upmarket is to use its installation led service model to win the first sale, then add software and financial products fast enough that larger merchants see a reason to stay beyond a negotiated rate.