Credit Card Fees: The Quiet Line Item Eating Your Margin

5 min read · Job Costing

The short answer

Credit card processing fees typically run 2 to 3.5 percent of every transaction, and on a big install ticket, that can be a meaningful dollar amount that never shows up as a line item most contractors think about. Left untracked, it just quietly reduces your margin on every card payment. Tracked and priced for, it becomes a manageable, predictable cost instead of a mystery in your bank deposits.

Key takeaways

• Card fees are usually 2 to 3.5 percent, and they add up fast on large tickets.
• Untracked, the fee looks like a smaller deposit, not a cost, so it hides from your margin math.
• Some contractors pass a portion of the fee to the customer or offer a cash discount.
• Compare processors periodically. Rates and structures vary more than most contractors realize.

Why this fee is easy to miss

When a customer pays by card, the deposit that lands in your bank account is already net of the processing fee. Most contractors just see a slightly smaller number and move on, without ever separating out how much was actually taken as a fee. Multiply a 3 percent fee across a season of five figure install tickets, and the total is often larger than contractors expect when they finally add it up.

How to track it properly in Xero

Record the full invoice amount as revenue, and post the processing fee as its own expense line, rather than letting it net silently against the deposit. This keeps your revenue numbers accurate and gives you a clear, trackable cost you can review monthly. It also makes it obvious, over time, whether your current processor's rate is competitive.

What you can do about it

Some contractors build the fee into pricing across the board. Others offer a small cash or check discount, or add a card surcharge where state law allows it, which varies, so confirm what is permitted before doing this. At minimum, shop your processing rate periodically. Rates and fee structures differ enough between providers that a review every year or two is worth the time.

Frequently asked questions

Can I charge customers extra for paying by credit card?

Some states allow card surcharges under specific rules and others restrict it. Confirm what is allowed in Louisiana and follow your processor's disclosure requirements before adding one.

How much should I expect to pay in processing fees?

Typically 2 to 3.5 percent per transaction, though rates vary by processor, card type, and how the payment is entered.

Should I track processing fees separately from revenue?

Yes. Recording the full invoice as revenue and the fee as a separate expense gives you an accurate margin picture.

Stop letting fees hide in your deposits

911 Bookkeepers sets up clean Xero tracking so HVAC contractors can see exactly what processing fees are costing them. Book a free books review at https://911bookkeepers.com or call (225) 274-6576.

Jeremy Brewer is the founder of 911 Bookkeepers LLC in Baton Rouge, Louisiana. He came up through the HVAC trade and works as a licensed paramedic in EMS. He is a Xero Certified Advisor. 911 Bookkeepers is built for the trades.