Most business owners don't know how much they're actually bleeding to payment processors. Here's exactly how to calculate your hidden costs and what to do about it.
You know what's worse than paying too much for something? Paying too much for something for years and never noticing.
That's exactly what happened to a construction business owner who discovered he was handing over $70,000 annually in payment processing fees—31% of his entire profit. He'd been getting crushed by card processing rates and ACH fees while running the rest of his business efficiently. The worst part? He didn't realize it until someone asked the right question.
If you take payments from clients—whether you're in construction, professional services, or product sales—you're probably overpaying too. Here's how to find out, and more importantly, what to do about it.
Most entrepreneurs know they pay processing fees, but they don't actually know the number. Start here:
Pull your last 12 months of payment processor statements. Don't estimate. Get the actual numbers.
Look for:
Add it all up. Divide by your total annual profit. If you're above 2–3%, you have a problem.
The construction owner was paying approximately 31%. That's not an outlier—it's a warning sign that he was using a one-size-fits-all payment solution instead of something designed for his business model.
Payment processors aren't all the same, and they don't charge the same rates. Here's what determines your fee:
Your business model. If you're taking card-present payments (in-person with a card reader), you pay lower rates than card-not-present (online or phone). Construction is almost always card-not-present, which means higher risk in the processor's eyes, which means higher fees.
Your average transaction size. Processors make money on percentages. If you're invoicing clients for $5,000 jobs, you're paying percentage-based fees on large amounts. ACH transfers (which are cheaper) might be an option but only if you're set up for them.
Your payment mix. If you're accepting lots of different payment methods—cards, ACH, checks—you're likely using a generalist processor that doesn't optimize for your specific needs.
The construction owner was probably using a standard merchant account or payment gateway designed for retail, not for high-ticket invoicing.
Once you know what you're paying, here's the move: find a processor that actually fits how you operate.
For construction and B2B invoicing:
The construction owner switched to a service with $0 ACH fees. That single change saved him $23,000 annually.
Don't just switch to another standard processor at a slightly better rate. Ask yourself: What payment method do most of my clients actually prefer? Then optimize for that, not for whatever your current provider is pushing.
Now that you've found the leak, don't let it happen again.
Every quarter, spend 30 minutes reviewing your processing costs. Not your profit margin—specifically your payment fees. Put it on a calendar.
Watch for:
Also, renegotiate annually if you're above market rates. Payment processors count on inertia. If you've been with the same provider for 2+ years and your volume is good, you have leverage. A simple call asking "What better rates can you offer?" often works.
Don't read this and forget it. Here's what to do:
That construction owner lost years of profit before catching this. You don't have to.