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Card & ACH processing · Custom integrations

Payments should be clear.

We set up card and ACH processing for businesses and the software they run on. Every fee is explained in plain English, nothing hides in the fine print, and if you're already getting a fair deal, we'll tell you.

A statement, decodedExample
Visa and Mastercard interchangePass-through$1,512.40
Network assessmentsPass-through$118.95
Discount rate, 0.75%Markup$631.58
Non-qualified surchargeAsk about this$96.40
PCI non-compliance feeAsk about this$39.95
"Regulatory" feeAsk about this$14.95
Effective rate2.89%
Processor markup0.95%
Fees to question$151.30
How we work

Four steps, and you see all of them.

1

Review

Free. We read your recent statements, your card mix and your industry rules before we suggest anything.

2

Recommend

We show you the program we'd pick, what it would have cost last month, and why. In writing.

3

Set up

Terminals, online checkout, invoicing, or a custom integration into the software you already use.

4

Stay on

We watch your rates, answer the phone, and tell you before anything on your bill changes.

Principles

Four things we'll never do.

  • Charge a fee we can't explain in one sentence.If it's on your statement, we'll explain it.
  • Change your rate without telling you first.Card networks update their rates every April and October. You'll hear it from us before you see it on a bill.
  • Lock you in with fine print.Everything we offer is explained before you sign anything.
  • Pretend we're the right fit when we're not.If your current setup is fair, the consultation ends with us saying so.

Bring your statements. We'll bring the math.

A conversation with someone who reads processing statements for a living. You'll leave knowing your real rate. No contract to talk.

Book a free consultation
How pricing works

No rate card. Every program, explained.

We work across too many industries for one price list to be honest. A dental office and a software platform shouldn't pay the same way. So here's how each program works, who it fits, and what you'll see on your statement. Your consultation gets you real numbers for your business.

Interchange

Paid to the bank that issued your customer's card. Visa and Mastercard publish the rates and update them each April and October. Same cost for every processor.

Network fees

Paid to Visa, Mastercard, Amex and Discover for running the network. Small, and identical for every merchant.

Processor markup

Everything else. This is the only part anyone can negotiate, and the part most statements make hardest to find.

The programs

Eight ways to price payments.

Interchange-plus

Our default

You pay interchange and network fees at cost, plus one markup shown on its own line.

Who it fits
Almost anyone with real volume. It's the only model where you can check the math.
On your statement
Interchange by card type, network fees, and the markup, each on its own line.
Watch for
"Interchange-plus" offers with monthly fees stacked on top.

Flat rate

Rarely our pick

One blended percentage plus a per-transaction fee, whatever card is used.

Who it fits
Very low volume, or anyone who values a predictable number over the lowest one.
On your statement
One rate. Simple to read, impossible to audit.
Watch for
A debit card costs far less to process than a rewards card, but you pay the same rate on both.

Dual pricing

Customer chooses

You show two prices for everything, cash and card. The customer picks how to pay.

Who it fits
In-person businesses where paying cash is a real option: service shops, dealerships, restaurants.
On your statement
Your normal processing costs, covered by the card price.
Watch for
Both prices must be visible before payment, on shelves, menus and invoices.

Cash discount

Cash pays less

Your posted price includes the cost of accepting cards. Customers paying cash get a discount.

Who it fits
Businesses that want one posted price and a reward for cash.
On your statement
Normal processing costs, offset by the posted price.
Watch for
A percentage added at checkout is a surcharge, whatever it's called, and follows surcharge rules.

Surcharging

Most rules

A fee added to credit card payments to cover your cost of acceptance.

Who it fits
Businesses whose customers have a real alternative like cash, check or ACH. We won't set it up if card is the only way to pay.
The rules
Credit only, never debit or prepaid. Capped by card network rules and never above your actual cost. Disclosed before payment. Not allowed in some states.
Check first
We check your state and setup as part of your free review.

ACH

Bank to bank

Payments pulled straight from a bank account, for a flat fee per payment instead of a percentage.

Who it fits
Large invoices, B2B receivables, memberships: anywhere a percentage fee hurts.
On your statement
A flat per-item fee. Free for the person paying, not free for you.
Watch for
Slower to settle than cards, and payments can come back as returns days later.

Level 3

B2B savings

Business and government cards qualify for lower interchange when the payment carries line-item detail.

Who it fits
Anyone paid by corporate or purchasing cards.
On your statement
Lower interchange categories on qualifying payments. Same markup.
Watch for
Missing data drops payments into pricier tiers. We set it up to send automatically.

Software revenue share

For software companies

If your software runs payments for your customers, you earn a share of what's earned on every transaction.

How it works
Your share is paid monthly, with a report showing every merchant's contribution. Terms depend on your volume and setup.
Watch for
"Revenue share" deals that pay a share of a number you can't see. Ours comes from the same line items your customers see.
Read your own statement

The fees we look for first.

These are the line items that turn a good advertised rate into a bad effective one. If you see them on your statement, ask what they're for.

  • PCI non-compliance feeCharged when a security questionnaire isn't on file. Usually fixable in an afternoon.
  • Non-qualified surchargeExtra charged when a card "downgrades." Often a setup problem, not a card problem.
  • "Regulatory" or "network" feeSounds official. Ask which regulation, and whether it's passed through or set by your processor.
  • Statement and batch feesSmall monthly and per-day charges that add up.
  • Monthly minimumA charge for not processing "enough" in a month.
  • Early termination feeThe cost of leaving. Worth knowing before you sign anything.
For software companies

Build with us, on our rails.

Your customers already run their business in your software. Payments belong there too, with a share of every transaction coming back to you.

Straight talk

Stripe is a great place to start. We're for what comes next.

Flat-rate platforms trade margin for speed. That's the right trade on day one. It stops being the right trade once payments show up as a real line on your P&L.

You're passing margin through

A blended rate bundles interchange, network fees and the processor's cut into one number. None of it comes back to you.

Nobody picks up the phone

When an automated risk system holds your funds, you want a person who already knows your business.

Your customers aren't generic

Dual pricing, Level 3, in-person and online in one place, a workflow no off-the-shelf checkout covers.

When we're not the fit: pre-launch and need your first payment next week? Start with Stripe. Come back when the fees are big enough to matter.

What's on the rails

Everything your customers need to get paid.

Your brand where they pay

Checkout, receipts and emails that look like your product, not ours.

Revenue on every payment

A share of what's earned on every transaction your customers run, reported monthly.

Card data never touches your servers

Hosted payment fields keep card numbers off your systems and your security paperwork short.

Cards on file that update themselves

Saved cards refresh automatically when banks reissue them, so billing doesn't break.

Subscriptions that collect themselves

Recurring billing with automatic retries. Card and ACH on the same engine.

In person and online, one system

Terminals, virtual terminal, ecommerce and invoices on one dashboard and one statement.

Custom integrations

Built by engineers who build payment systems.

Custom integrations are built with our engineering partners and scoped case by case. We don't take every build. The consultation is where we figure out together whether yours is worth doing.

  1. 1Consultation. Your industry, the software you run on, and what you need payments to do.
  2. 2Scoping call. What the integration needs, and what it's worth to your business.
  3. 3Written plan. What gets built, who owns it, and the timeline.
  4. 4Build and launch. We stay on after go-live. Same people, same phone number.
Your free review

Done by a person, not a pitch.

Every consultation includes the checks below. You keep the results either way.

Statement review

What you're really paying

  1. You send one to three recent processing statements.
  2. We separate interchange and network fees from your processor's markup, line by line.
  3. You get your true effective rate and a list of every fee worth questioning.
  4. If you'd rather stay put, we'll write the email to send your processor about those fees.
Surcharge check

Can you pass fees on?

  1. We check your state's law.
  2. We check the card network rules: credit only, capped, disclosed.
  3. We check whether your customers have a real way to pay without a card. If they don't, we'll suggest another approach.
Software fit

Will it work with what you run?

  1. Tell us the software your business runs on.
  2. We check with our integration team.
  3. You get a straight answer: works today, worth building, or not a fit right now.
How to send statements: please don't email them. Statements carry account details. After you book, we'll send you a secure link to upload them.
Principles

How we work, in writing.

Payments has a reputation for fine print. We'd rather be the company you can check up on.

  • Charge a fee we can't explain in one sentence.If it's on your statement, we'll explain it.
  • Change your rate without telling you first.You'll hear it from us before you see it on a bill.
  • Lock you in with fine print.Everything is explained before you sign anything.
  • Pretend we're the right fit when we're not.If your current setup is fair, we'll say so.
  • Surcharge customers who can't pay another way.Passing on card fees is only fair when cash or ACH is a real option.
  • Call ACH free.It's free for the person paying. It costs you a flat fee per payment, and we say so.
Who we are

Built on referrals, not cold calls.

Almost everyone we work with was introduced by someone they trust, and that person is usually on the first call with us. That keeps us honest: a bad deal doesn't just lose a client, it costs a friend their credibility.

SundayPay is based in Kansas City.

Free consultation

Let's look at your numbers.

Tell us a little about your business. We'll reach out within one business day to set up a time, and send a secure link for your statements.

  • ✓No contract to talk
  • ✓A person reads your statement, not just software
  • ✓You keep the review either way

We use what you send only to contact you about your consultation. We don't sell or share it.