If you are paying 2.5% to 3.5% on every transaction, you are probably aware that most of that cost is the credit card network’s cut. What fewer business owners know is that there is an entirely different payment rail, built into the US banking system, that typically costs 0.2% to 0.8% per transaction with a cap around $5.

That rail is ACH. The question is when it makes sense to use it and when credit card processing is still the better tool. If you are currently on flat-rate pricing, our breakdown of what Square and Stripe actually cost at scale puts the difference in perspective.

2.3–3.5%
All-in credit card effective rate
0.2–0.75%
Typical ACH percentage fee
$5 cap
Most ACH processors cap the fee
$8,000/yr
Savings potential at $200K/mo invoicing

What Is ACH Payment Processing?

ACH stands for Automated Clearing House. It is the network that handles direct bank-to-bank transfers in the United States, including payroll direct deposits, bill payments, and business-to-business transfers.

When a customer pays you via ACH, they provide their bank routing number and account number. The funds move directly from their checking or savings account to yours through the Federal Reserve’s ACH network.

ACH payments go by several names depending on context: eCheck, direct debit, bank transfer, and bank draft all typically refer to ACH transactions.

The main processing time difference: ACH transfers typically settle in one to three business days. Credit cards usually settle next day or same day depending on your processor. Same-day ACH is available but costs more.

Business owner comparing credit card and ACH payment options

Cost Comparison: ACH vs Credit Cards

This is where ACH wins decisively for the right use case.

Credit Card Processing
Interchange (to issuing bank)
1.5% – 2.5%+
Network assessment fees
0.13% – 0.15%
Processor markup
0.25% – 0.50% + per-tx fee
All-in effective rate
2.3% – 3.5%
ACH Processing
Flat fee per transaction
$0.25 – $1.50
Percentage-based option
0.2% – 0.75% (cap ~$5)
Monthly gateway fee
$10 – $25
Example: $500 invoice
$2.50 vs $13.50
The Math at Scale
For a business invoicing $200,000 per month, switching high-ticket transactions from cards to ACH can save $4,000 to $8,000 per year. That figure compounds every year you stay on the right structure.
Bank transfer and ACH payment processing illustrated

When ACH Makes More Sense Than Credit Cards

ACH is the better tool in these scenarios:

Recurring subscriptions
SaaS, gym memberships, retainers, subscription boxes. Bank accounts are stable; cards expire and create failed payment cycles.
B2B invoicing over $500
Most businesses will provide bank info when you explain it saves them nothing and saves you a meaningful amount.
Rent and property payments
Landlords moving to ACH for rent collection dramatically reduce per-unit processing cost while improving consistency.
High-ticket services
HVAC, roofing, legal, medical. A $4,000 invoice via ACH costs under $30 versus $108 by card. Easy math.

We cover ACH processing in more detail on our ACH and eCheck payment processing page if you want to explore specific setup options.

When Credit Cards Are the Better Choice

ACH is not always the answer. Credit cards are better when:

Speed matters. If you need funds today or tomorrow, ACH’s one-to-three-day settlement timeline can create cash flow gaps. Credit card next-day funding is faster.

The transaction is at the point of sale. Nobody at a coffee shop counter is going to hand over their routing number. Retail and quick-service environments need card terminals.

Customer protection is a feature. Customers often prefer cards for big purchases because of chargeback protection. A contractor who takes ACH only may lose jobs to a competitor who accepts cards, especially for new customers.

International customers. ACH works only within the US banking system. International B2B payments need wire transfers or card-based solutions.

Payment processing dashboard showing ACH and card transaction comparison

ACH Returns: What to Watch For

The main risk with ACH that does not exist with credit cards is the return. When a customer provides incorrect bank information, has insufficient funds, or disputes an ACH transaction, you receive a return notification that typically takes one to three business days to appear.

Common ACH Return Codes
R01
Insufficient funds
R02
Account closed
R03
No account / unable to locate
R29
Corporate customer β€” not authorized
Mitigate return risk: get written authorization before debiting, use signed forms for recurring charges, and monitor return rates (processors flag accounts above 0.5% to 1%).
Business owner reviewing ACH and credit card cost comparison

Using Both: The Practical Approach

Most businesses that run significant volume find the right answer is a combination. Credit cards for in-person and small-ticket transactions. ACH for invoicing, recurring billing, and high-ticket services.

Setting this up requires a processor that supports both ACH origination and card processing. Many merchant services companies only offer one or the other. A full-service provider can set up both under a single agreement, simplifying reconciliation and reporting.

What to look for in an ACH processor:

  • Flat fee vs. percentage. For high-ticket transactions, percentage-based ACH fees can be expensive. A $20,000 payment at 0.5% is $100; flat $2.50 is $2.50. Know your average ticket.
  • Same-day ACH. If settlement speed matters, confirm availability. Typical premium: $0.50 to $1.50 per transaction.
  • Return handling. How does the processor notify you? Do they re-present automatically? Is there a return fee?
  • Integration. Can ACH connect to your invoicing software, accounting platform, or CRM?
See Where ACH Could Lower Your Costs
Run a free analysis of your current processing costs to see where ACH could reduce your fees, or apply to get set up with a combined card and ACH solution.
Call (425) 548-2141 β€” the best operators run both rails and route transactions intelligently.