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The lowest-cost way to accept digital payments is to match each sale to the least expensive suitable route—not to choose a provider by its headline rate alone. In the United States, published November 2026 examples range from in-person card rates of 2.29% + 9¢ to 2.7% + 5¢, while online card payments commonly cost about 2.9%–3.3% plus 30¢. Bank-transfer payments can be less expensive for some invoices, but eligibility, minimums, caps and account routes matter. Start by separating in-person, online, invoice, keyed and international sales; then calculate percentage and per-transaction charges against your actual ticket sizes. The rates below are US examples from Square, Stripe and PayPal, not universal offers. Your country, account, plan, channel and customers’ payment methods can change the result.
Which digital-payment route usually costs the least?
For many small merchants, card-present payments are cheaper than online or manually keyed card transactions. A bank transfer can be cheaper still for an invoice or suitable API/payment-link sale. The right answer depends on how customers pay, the average ticket, and whether you need a reader, online checkout, invoicing or international acceptance.
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| Provider and route | Published US rate | What it means |
|---|---|---|
| Square Free, tap, dip or swipe | 2.6% + 15¢ | Card-present sale |
| Square Free, online or invoice | 3.3% + 30¢ | Card paid through an online or invoice flow |
| Square Free, ACH by invoice | 1%, $1 minimum | Bank transfer; route-specific terms apply |
| Square ACH by API or payment link | 1%, $1 minimum, $5 cap | Cap applies on the specified routes |
| Stripe domestic in-person card | 2.7% + 5¢ | Successful card-present transaction |
| Stripe successful online card | 2.9% + 30¢ | Online card transaction |
| PayPal card-present or QR code | 2.29% + 9¢ | Separate published rate for these methods |
| PayPal card keyed in | 3.49% + 9¢ | Higher-cost manual entry |
| PayPal Expanded Checkout cards | 2.89% + 29¢ | Published checkout rate |
US provider pricing snapshots checked Nov 2026. See Square’s fee schedule, Stripe pricing and PayPal Business pricing for current eligibility and terms.
How do percentage and fixed fees change the real cost?
Every transaction has two components: a percentage of the sale and a fixed cents charge. Use this formula for each route:
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processing fee = (sale amount × percentage rate) + fixed fee
The fixed part is disproportionately expensive on small tickets. On a $10 in-person sale, the published examples work out to approximately 41¢ with Square (2.6% + 15¢), 32¢ with Stripe (2.7% + 5¢), and 32¢ with PayPal (2.29% + 9¢). On a $100 sale, the same rates produce $2.75, $2.75 and $2.38 respectively. Those are arithmetic illustrations, not a promise of your final bill; refunds, disputes, plan changes and other charges may be handled separately.
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One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware matchFor an online $10 sale, Stripe’s 2.9% + 30¢ is 59¢ and Square’s 3.3% + 30¢ is 63¢. At $100, they are $3.20 and $3.60. This is why a provider with a slightly higher percentage can still be competitive for larger tickets, while a lower fixed fee can matter more for inexpensive items.
Build a calculation for your own mix rather than multiplying one advertised rate by total revenue. Put each month into categories such as in-person card, online card, invoice card, ACH, keyed card, international card and currency-converted card. Multiply the volume in each category by that route’s percentage and fixed charges, then add plan, hardware and optional service costs.
Which payment method should you use for each sales channel?
In-person retail, appointments and markets
Use a card-present method—tap, dip or swipe—when the customer and card are together. The published Square Free rate is 2.6% + 15¢; Stripe lists 2.7% + 5¢ for domestic in-person cards; PayPal lists 2.29% + 9¢ for card-present payments. These rates are not a controlled comparison: each provider defines products, eligibility and other terms differently.
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Check whether a compatible phone can accept contactless payments before buying a reader. Stripe lists Tap to Pay with an additional 10¢ per authorization on compatible iPhone and Android devices. Square describes accepting payments through Tap to Pay and other no-hardware options. A phone-only setup can avoid an upfront device purchase, but the extra authorization charge and your phone’s compatibility should be included in the calculation.
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Online stores, websites and payment links
Online card payments carry a different rate because the card is not physically presented. Stripe lists 2.9% + 30¢ for a successful online card transaction. Square Free lists 3.3% + 30¢ for online or invoice payments. PayPal publishes separate checkout rates, including 2.89% + 29¢ for Expanded Checkout cards. Use the rate for the exact checkout product you intend to activate, not the provider’s in-person rate.
For a simple service business, a hosted payment link can be less work than building a full checkout. Stripe says payment links are included with standard Payments pricing. Square lists payment links among its no-hardware acceptance routes. Compare any add-on, subscription or invoicing charge before assuming a link is free beyond processing.
Invoices and client work
An invoice lets you offer a card option and, where available, a bank-transfer option. Square lists ACH by invoice at 1% with a $1 minimum. On specified Square API or payment-link routes, ACH is also 1% with a $1 minimum and a $5 cap. Square says ACH deposited into Square Checking has no fee. The route, account and destination matter, so read the current terms instead of assuming every ACH payment receives the same treatment.
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Show the customer the available methods and the total due clearly. If a client is comfortable with a bank transfer, the lower percentage may outweigh the convenience of a card. Keep card acceptance available for customers who need it; restricting an invoice to ACH can delay payment or create avoidable friction.
Occasional card-not-present or keyed sales
Keyed transactions are a separate, usually more expensive category. Square lists 3.5% + 15¢ for manual entry or card-on-file transactions. PayPal lists 3.49% + 9¢ for a card keyed in. Do not price an occasional phone order using your card-present rate. If keyed sales become regular, compare a secure payment link or invoice instead of repeatedly typing card details.
International customers
International cards and currency conversion can add materially to the processing bill. Stripe lists an additional 1.5% for international cards and 1% when currency conversion is required. Confirm the relevant additions for your provider and account, and verify that the payment methods your overseas customers prefer are supported in your country. A domestic rate is not a reliable estimate for a foreign-card sale.
How can you set up low-cost digital payments step by step?
- Map your sales. Estimate monthly revenue, number of transactions and average ticket for in-person, online, invoice, keyed and international sales. Record the currencies and payment methods customers actually request.
- Collect the exact rates. Open the provider’s current US pricing page and account dashboard. Record the percentage, fixed fee, ACH minimum or cap, international additions, currency-conversion charge and any monthly or product fee. Square says rates vary by plan and location, so do not rely on a generic quote.
- Calculate route-by-route totals. Apply the formula to representative small, medium and large tickets. Include the fixed cents charge for every transaction; do not estimate cost using only a percentage.
- Choose the least costly suitable channel. Use card-present acceptance in person, a hosted checkout or payment link online, and an invoice that offers ACH when appropriate. Keep keyed entry for exceptions rather than making it your default.
- Decide whether hardware is needed. Compare Tap to Pay with a reader’s purchase price and any per-authorization charge. If nearly all sales are remote, start with links or invoices instead of buying a terminal.
- Create and verify the merchant account. Complete identity and business verification, connect the payout account, set tax and receipt details, and review settlement timing. Provider eligibility and payout rules can differ by country and business type.
- Activate the payment methods. Turn on card-present acceptance, online checkout, payment links or invoices, and ACH only where your account supports them. Present customers with the methods you actually monitor.
- Run a small live transaction and reconcile it. Confirm the customer-facing amount, receipt, payout and fee entry in your dashboard. This is a check of your own setup, not a substitute for reading the provider’s contract.
- Document the rules for staff. State when to use tap or chip, when to send a link, how to handle a keyed order, and where to record refunds or failed payments. Consistent routing prevents an employee from using an expensive method by accident.
How do you lower fees without making payment harder?
- Route by cost and convenience. Offer ACH for suitable invoices, but retain card and digital-wallet options when speed or customer preference matters.
- Reduce tiny-ticket friction. Bundle very small items or set a sensible minimum purchase where lawful and commercially appropriate; the fixed cents charge otherwise consumes a larger share of revenue.
- Prefer card-present acceptance in person. Do not key a card that could be tapped, dipped or swiped. Manual-entry rates are higher in the published Square and PayPal schedules.
- Avoid unnecessary hardware. A payment link, invoice, virtual terminal or Tap to Pay may cover occasional sales. Buy a reader when its convenience and economics justify it.
- Watch international leakage. Tag foreign-card and converted-currency sales separately so the extra Stripe charges, or your provider’s equivalent, are visible.
- Review subscriptions and add-ons. A no-monthly-fee plan may still have higher processing rates, while a paid plan may only pay off at a particular volume. Include every recurring charge in your comparison.
- Ask about custom pricing at meaningful volume. Square says merchants processing more than $250,000 annually can ask about custom pricing. That is a provider-specific threshold, not a guarantee that a discount will be offered.
- Recheck rates after business changes. A new location, online channel, currency or plan can move a sale into a different fee category.
What should a realistic cost comparison include?
Build a simple spreadsheet with one row per payment route and these columns:
| Input | Why it matters |
|---|---|
| Monthly transactions | Determines how often each fixed fee is charged |
| Average and low ticket | Shows the effect of the cents component |
| Percentage rate | Scales with sales volume |
| Fixed fee | Can dominate small purchases |
| Channel | In-person, online, invoice and keyed rates differ |
| ACH minimum or cap | Changes the effective rate on small or large transfers |
| International and conversion additions | Applies only to affected transactions |
| Monthly, software and hardware costs | Non-processing expenses can change the total |
For each row, calculate (volume × percentage) + (number of transactions × fixed fee), then add recurring and one-time costs over the period you are comparing. Run at least three scenarios: your current mix, a higher online share and a higher ACH share. The cheapest provider in one scenario may not be cheapest in another.
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Do not compare a capped ACH route with an uncapped route as if they were identical. A $5 cap can substantially reduce the fee on a large eligible transfer, while a $1 minimum makes a very small transfer expensive as a percentage of its amount. Confirm whether the cap and no-fee Square Checking treatment apply to your specific route.
How do Square, Stripe and PayPal differ in the published US examples?
These providers illustrate why channel matters more than a single “processing rate.” Square Free has no monthly subscription cost according to its fee explainer, lists no fees for cash, checks and other tender types, and offers several no-hardware routes. Stripe separates domestic in-person and online card pricing and publishes explicit additions for international cards and currency conversion. PayPal lists distinct rates for card-present, QR, keyed and Expanded Checkout transactions.
| Provider | Useful fit suggested by the published routes | Important cost detail |
|---|---|---|
| Square | Small merchants combining in-person sales with invoices, links or virtual-terminal use | Square Free lists 2.6% + 15¢ in person, 3.3% + 30¢ online/invoice, and ACH options with route-specific minimums and caps |
| Stripe | Businesses needing online payments, payment links or developer/API control | 2.7% + 5¢ domestic in person; 2.9% + 30¢ online; Tap to Pay adds 10¢ per authorization; international and conversion additions apply |
| PayPal | Merchants whose customers use PayPal checkout, QR or card acceptance | 2.29% + 9¢ for card-present and QR; keyed transactions are 3.49% + 9¢; checkout products have separate rates |
These descriptions are not endorsements or a universal ranking. Features, eligibility and prices can change, and the same provider can be inexpensive for one route and costly for another. Confirm the offer shown in your account before switching.
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- Using the headline rate for every sale. In-person, online, invoice and keyed transactions have different schedules.
- Ignoring the fixed charge. A 30¢ fee is significant on a $5 or $10 purchase even when the percentage looks competitive.
- Assuming ACH is always free. Minimums, caps, route restrictions and destination-account rules apply.
- Buying hardware before mapping the channel. Remote sellers may need only links or invoices; phone-based sellers may qualify for Tap to Pay.
- Forgetting international additions. Foreign cards and conversion can add percentage points.
- Comparing different products as though they were equivalent. A QR rate, a checkout rate and a keyed rate serve different customer journeys.
- Passing fees to customers without checking rules. Whether a surcharge or convenience fee is allowed depends on local law, card-network rules and provider terms. Obtain local advice before adding one.
- Failing to reconcile payouts. Record gross sales, processing fees, refunds and net deposits separately so your accounting and tax records match the provider statement.
Which setup is sensible for common small-business situations?
- Market stall or local service provider: Start with card-present acceptance and compare a compatible phone’s Tap to Pay with a reader. Keep a payment link for customers who pay later.
- Consultant or freelancer billing clients: Send invoices that offer card and, when eligible, ACH. Calculate the $1 minimum and any cap against your typical invoice size.
- Online craft or subscription seller: Compare online card pricing, checkout features and any recurring software cost. Do not substitute an in-person rate for a website transaction.
- Business with occasional phone orders: Use a secure invoice or payment link when practical; reserve keyed entry for cases that genuinely require it.
- Exporter or internationally paid professional: Model foreign-card and conversion additions separately and verify support for the payment methods used by customers in each market.
What should you check before going live?
- Country, business type and account eligibility are confirmed.
- Every sales channel has its own recorded percentage and fixed fee.
- ACH minimums, caps and destination-account rules are understood.
- International-card and currency-conversion additions are included where relevant.
- Hardware, Tap to Pay compatibility and any per-authorization charge are budgeted.
- Receipts, refunds, failed payments and payout timing are visible in the dashboard.
- Staff know when to use card-present, online, invoice, ACH and keyed routes.
- Any customer surcharge or convenience fee has been checked against applicable local rules and provider terms.
- You have a monthly review date to recalculate costs when volume or sales mix changes.
How do you know when to switch providers or plans?
Switch only after comparing a complete period of actual route-level data with the alternative’s current terms. A lower in-person rate may be outweighed by a higher online rate, a hardware purchase, international charges or a monthly subscription. Conversely, a provider with a slightly higher card rate may reduce your total if it gives customers a cheaper ACH route or eliminates software you already pay for.
Before moving, export transaction and payout records, verify that recurring links and invoices will continue to work, check payout timing, and tell customers about any changed payment experience. Keep the old account available long enough to resolve refunds or disputes tied to earlier transactions, according to the provider’s retention rules.
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Frequently Asked Questions
Can I add a surcharge to cover card-processing fees?
Do not assume you can. Surcharges and convenience fees can be restricted by state or national law, card-network rules and the provider contract. Check the rules that apply where you sell and disclose any permitted fee before payment.
Is a free payment plan automatically the cheapest option?
No. A plan with no monthly subscription can have higher percentage or fixed charges, while a paid plan may be worthwhile only at a particular volume or channel mix. Compare total annual cost, including hardware and add-ons, against your own transaction data.
How often should a small merchant recalculate processing costs?
Recalculate whenever your sales channel, average ticket, country, currency or provider plan changes, and review the figures at least annually. Provider pricing pages and account terms can change, so verify the rate shown in your dashboard before renewing a decision.
What information should I save for bookkeeping?
Keep the gross transaction, payment method, processing fee, refund, dispute adjustment and net payout for each settlement period. Matching those records to your bank deposits makes it easier to identify missing payments and report revenue correctly.
