For companies experiencing growth, success can come with a hidden price when it comes to receiving B2B payments. As transaction volumes increase, the cost of collecting that revenue also rises, often exponentially. More invoices mean not only more transaction fees, but also more manual reconciliation, longer days sales outstanding (DSO) gaps and costs that can significantly erode margins as revenue increases.
Mitigating this “growth tax” is a critical step for growing companies in any environment, but it’s especially urgent amid the current landscape of persistent inflation, tariff volatility and tighter credit — all of which are putting the pressure on finance leaders to find and leverage efficiencies across their companies’ payment operations.
Solving the growth tax problem starts with recognizing that payment infrastructure isn’t just a commoditized back-office function. When designed strategically and optimized to suit a scaling business’s unique needs, the right framework can significantly support this growth rather than hinder it.
The costs of growth without the right infrastructure
As invoice volumes climb, the cracks in a legacy payments setup tend to show up quickly in slower collections, ballooning reconciliation work, and fees that eat further into margin with every new customer, said Paystand Sales Director Mike Cartmill.
“Scaling up means lots and lots of transactions, and companies quickly realize they have to start thinking about how they can support that growth,” Cartmill said. He broke the growth tax down into three elements: the speed of getting paid; the labor required to manage that revenue; and the fees connected to receiving payments.
Regarding speed, Cartmill noted that as companies add more customers and larger, more complex contracts, they also take on a wider mix of payment terms, credit profiles and approval processes, all of which stretch out the time it takes to actually convert an invoice into cash. And drawing on a line of credit to bridge cash-flow gaps — once an inexpensive option to cover shortfalls — has become much costlier as interest rates have risen, Cartmill said.
On the labor side, costs scale up quickly as invoice volumes increase. For instance, a finance team handling 50 invoices a month likely can manage with an hour or two of manual reconciliation a week, Cartmill said. When the number grows to 500 or 5,000 invoices a month, however, that manual process simply can’t keep up. The added complexity slows month-end close, delays the reporting CFOs need to guide strategy and makes it harder to keep up with collections.
Finally, there are transaction fees themselves. Credit card processing fees typically run around 3% per transaction, and even once-cost-effective ACH has crept upward as more software platforms layer percentage-based fees on top of flat per-transaction charges.
Notably, none of these costs are linear, Cartmill said. As volume scales, the costs of an outdated payments infrastructure can go up exponentially.
“Double your invoice volume and you don't just double your reconciliation workload. You might triple it,” he said. “Now you're managing exceptions, mismatched remittances and one-off customer requirements that never existed at that smaller scale.”
Left unaddressed, these quickly compounding costs can erase a significant percentage of a growing company’s revenue gains.
What a scalable, AI-enabled payments platform looks like
For most companies, the growth tax comes down to a payments framework that was built for a smaller, simpler version of the business and was never updated as volume and complexity increased.
What’s needed to solve this issue is a payments framework that becomes less costly as a company grows. Paystand’s model, for example, replaces per-transaction fees — through the Paystand Network — with flat subscription pricing, so the cost of collecting each dollar actually declines as volume rises, meaning the platform's economics align directly with a company’s growth trajectory.
“When you take per-transaction fees out of the equation, growth stops adding more costs, which becomes a compounding advantage as volumes continue to increase,” Cartmill said.
But this scalability goes beyond pricing, expanding into operational improvements made possible by leveraging AI and automation. For example, automated reminders and always-on collections activity help drive down DSO by pursuing receivables continuously rather than in the fits and starts of a manual process.
Meanwhile, ERP integration and automated cash application reduce the reconciliation burden on finance teams, reducing the hours and manual effort needed, and reallocating team members to higher-value work such as proactive collections outreach, FP&A support, and strategic planning for the CFO.
A roadmap for finance leaders
Given the current economic backdrop, companies increasingly are recognizing the urgency of optimizing their approach to payments to realize savings and efficiencies. Cartmill said some CFOs he talks with are focused on cutting the 3% they lose on every card transaction, while others are more worried about smoothing payment friction to keep more customers paying amid economic uncertainty.
Either way, payments modernization is an investment that is likely to pay dividends regardless of which risk a company is managing against, Cartmill said. For finance leaders evaluating such an investment, the priorities are straightforward, he said: Look for a platform that eliminates per-transaction fees in favor of predictable subscription pricing, integrates directly with existing ERP systems to minimize implementation lift, and leverages AI to automate both collections outreach and cash application so staff time shifts toward strategic work rather than manual upkeep.
For growing companies, the goal isn’t just to process more payments. It’s to make sure the cost of collecting that revenue doesn't rise faster than the revenue itself. With the right approach, finance leaders can transform their payments infrastructure from a cost center into a competitive advantage that supports their business’s growth instead of taxing it.
Ready to see what a modern, AI-powered payments platform could save your growing business? Contact Paystand to learn more.
