There have never been more ways to accept money from your customers, and never more confusion about which ones to use. Credit cards remain the default, but ACH keeps getting faster, the Federal Reserve’s instant-payment network is growing quickly, and stablecoins now have a federal rulebook.
This guide compares the major payment rails available to US businesses in 2026: what each costs, how fast it settles, where the fraud and chargeback risk sits, and which combination makes sense for your company. It matters double for high risk merchants, where processing fees and dispute exposure hit hardest.
Table of Contents
- How Do Credit Card Payments Work, and What Do They Cost?
- How Does ACH Work, and What Does It Cost?
- What About FedNow and Instant Payments?
- Where Do Stablecoins Fit In?
- Should You Surcharge to Offset Card Fees?
- Which Payment Rails Should Your Business Use?
How Do Credit Card Payments Work, and What Do They Cost?
When a customer pays by card, the money moves through the card networks (Visa, Mastercard, Discover, Amex) between the customer’s issuing bank and your merchant account. You pay for that convenience in three layers: interchange (set by the networks, paid to the issuing bank), assessments (paid to the network), and your processor’s markup.
For most retail businesses that lands around 2.5% to 2.9% per transaction. High risk merchants typically pay 3.25% to 3.99%, plus annual card-brand registration fees in some verticals.
Two things changed recently that every card-accepting merchant should know:
- Interchange is coming down slightly. The Visa/Mastercard interchange settlement, which received preliminary court approval in June 2026, cuts average rates by about 10 basis points for five years and caps standard consumer credit interchange for eight.
- Chargebacks are policed differently. Since April 2025, Visa’s VAMP program counts fraud and disputes together against a single ratio. See our 2026 chargeback guide for the full rules.
Cards’ biggest strengths: universal customer adoption, strong conversion, works everywhere. Biggest weaknesses: the most expensive rail you can accept, and the only one with chargebacks.
How Does ACH Work, and What Does It Cost?
ACH (Automated Clearing House) payments move funds directly between bank accounts through the Nacha-governed network that handles the vast majority of US direct deposits and bill payments. Instead of a percentage, ACH processing usually costs a flat fee of roughly $0.20 to $1.50 per transaction, or 0.5% to 1% capped, from specialized providers.
ACH has also gotten much faster than its reputation suggests: Same Day ACH now supports payments up to $1 million, with multiple settlement windows every business day.
ACH’s biggest strengths:
- Cost: often 90%+ cheaper than card processing on large transactions
- Recurring billing: bank accounts don’t expire the way cards do, which slashes involuntary churn for subscriptions
- No card networks: no interchange, no card-brand rules, and no chargebacks (ACH has a separate, narrower return process)
Biggest weaknesses: ACH returns for insufficient funds, no weekend settlement, and more checkout friction than a saved card.
What About FedNow and Instant Payments?
The newest rail is genuine instant payment. The Federal Reserve’s FedNow service settles transfers in seconds, 24/7/365, and adoption has moved fast: roughly 1,600 banks and credit unions are live on the network, with volume growing several-fold year over year. The Clearing House’s RTP network offers similar capability.
For most merchants today, instant payments shine on the payout side: paying vendors, affiliates, or workers instantly, and receiving large invoice payments without waiting on batch settlement. Consumer-to-business checkout on instant rails is still early, but it’s the direction the industry is heading, and it shares ACH’s killer feature: no chargebacks.
Where Do Stablecoins Fit In?
Stablecoins (dollar-pegged digital tokens) moved from the fringe to a regulated payment option when the GENIUS Act was signed in 2025, creating a federal framework for payment stablecoins with rules phasing in through late 2026.
For most businesses they’re still a complement, not a replacement. But for high risk merchants who struggle with card access, and businesses with international customers, stablecoin acceptance is now a legitimate alternative rail: near-instant settlement, no chargebacks, and no card network approval required. Just make sure your provider handles the compliance side properly.
Should You Surcharge to Offset Card Fees?
Surcharging means adding a fee (on credit cards only, never debit) to pass processing costs to the customer. The rules here changed with the 2026 interchange settlement: merchants will be able to surcharge up to 3%, including at the card-brand or product level, after giving their acquirer the required notice. Some states still restrict the practice, so check your local rules before turning it on.
The case for surcharging: it can effectively erase your card processing costs, which is significant money at high risk rates.
The case against: customers hate visible fees, competitors who absorb costs look cheaper at checkout, and a surprise surcharge is a classic trigger for disputes and abandoned carts.
A middle path: many businesses prefer a cash discount (advertising the card price and discounting for cash/ACH), which achieves similar economics with better customer optics. Steering customers toward ACH with a small discount is often the highest-net option of all.
Which Payment Rails Should Your Business Use?
For most businesses the answer isn’t one rail, it’s a deliberate mix:
- Cards for consumer checkout, where conversion matters most. Budget 2.5% to 2.9% (standard) or 3.25% to 3.99% (high risk), and manage your VAMP ratio actively.
- ACH for recurring billing, subscriptions, B2B invoices, and any large transactions. The savings compound, and involuntary churn drops.
- Instant payments (FedNow/RTP) for payouts and time-sensitive settlement as adoption spreads.
- Stablecoins as an optional alternative rail if you’re high risk or international.
- Surcharge or cash-discount only after checking your state rules and your competitive position.
The right mix depends on your industry, ticket size, and risk profile, and that’s exactly what we help businesses figure out. Set up a free consultation and we’ll match you with processing solutions across every rail your business can benefit from.
