Most contractors keep a close eye on materials, labor, and overheads. Payment processing fees, though, tend to slip under the radar. They show up as small percentages on each transaction, which makes them easy to dismiss, but on a $50,000 invoice, a 3% processing fee comes to $1,500. Across a full year of projects, that adds up fast.
Construction businesses already work on tight margins, typically between 10 and 20 percent. Standard credit card processing fees generally range from 1.5% to 3.5% per transaction — a range that can consume a significant portion of that margin if left unmanaged.
What The Numbers Say
The scale of this issue is striking. According to the Nilson Report, U.S. merchants paid a record $187.2 billion in card processing fees in 2024 alone. Construction businesses are among the most affected, since they regularly process large invoices and are often locked into payment systems that weren’t designed with their industry in mind. Understanding how fees work is the first step toward reducing them.
Breaking Down How Fees Are Structured
Credit card processing fees aren’t a single charge — they’re made up of several components. The interchange fee goes to the card-issuing bank, the assessment fee goes to the card network (Visa, Mastercard, etc.), and the processor markup is what your payment company charges on top. The first two are non-negotiable, but the processor markup is where there’s room to move.
Pricing Models Worth Knowing
Most processors use one of three pricing models: flat-rate, tiered, or interchange-plus. Flat-rate is simple — one fixed percentage regardless of card type — but it’s often the priciest option for businesses processing large volumes. Tiered pricing tends to be the least transparent, while interchange-plus passes on the actual rate plus a fixed markup, making it the clearest model for contractors to evaluate.
Practical Ways To Reduce What You Pay
A few practical changes can make a real difference. Start by comparing dedicated payment providers rather than defaulting to general-purpose tools like Square or Stripe, which are built for retail and priced accordingly. Next, encourage clients to pay by ACH bank transfer where possible, since ACH fees are typically far lower than card fees on large invoices.
If you do accept credit cards, check whether your processor allows you to pass the fee to the client as a surcharge. It’s legal in most U.S. states, though a handful prohibit it — so it’s worth confirming your state’s rules before you add that line to your invoices.
Settlement Speed Matters Too
Beyond the fee amount, how quickly funds hit your account can affect your ability to pay suppliers and cover payroll. Standard processors often hold funds for one to three business days, which can create cash flow gaps that are hard to absorb when you’re buying materials for the next job. Faster settlement — ideally, next-day deposits — is worth factoring into any comparison of payment systems.
Choosing A System Built For Construction
General-purpose payment tools were built for straightforward retail transactions. Construction payments are different: invoices are large, schedules are tied to project milestones, and reconciliation needs to link back to accounting and project management software. Using a platform built for construction can reduce admin time and simplify billing across complex, multi-stage jobs — something general-purpose tools weren’t designed to handle.
Regardless of which system you choose, treating payment processing as a cost center worth optimizing — audited regularly, like materials or labor — can add real money back to your bottom line over the course of a year.
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