The core things that matter when picking a processor
A payment processor moves money from your customer's bank account or card to yours. When you choose one, you are deciding who handles the transaction, how fast they settle funds to you, what they charge, and what happens if something goes wrong. The processor you pick affects your cash flow, your fraud risk, and how much you pay per transaction.
Start by knowing what you actually need: Do you take cards online, in person, or both? Do you need to handle subscriptions or one-time payments? How much volume do you expect in your first year? A processor built for high-volume e-commerce may be expensive and overcomplicated for a small service business. One designed for in-person retail may not handle digital invoices well.
The five things that separate one processor from another are transaction fees, settlement speed, fraud tools, customer support, and integration ease. Every processor will claim to excel at all five. Most excel at one or two and are adequate at the rest. Your job is to figure out which one or two matter most to your business, then compare the real numbers.
Key Takeaways
- Transaction fees vary by card type and payment method—a processor charging 2.9% + $0.30 per online card transaction may charge 1.95% for in-person Visa but 3.5% for American Express, so ask for the full rate card before you commit.
- Settlement speed ranges from same-day to two to three business days depending on the processor and your bank; faster settlement costs more, so match the speed to your cash flow needs, not to the marketing claim.
- Fraud tools like address verification and CVV checking are standard, but chargeback protection and dispute resolution vary widely—ask what happens when a customer disputes a charge and who pays if you lose.
- Customer support quality matters most when a transaction fails or a customer disputes a charge; call the processor's support line during your evaluation, not after you sign up, to hear the actual wait time and response quality.
- Integration with your point-of-sale system, accounting software, or e-commerce platform can take weeks or fail entirely; confirm the processor has tested integrations with your specific tools before you choose.
Transaction fees: what you actually pay per sale
Every processor charges a percentage of the transaction amount plus a per-transaction fee. The percentage varies by card type and payment method. Visa and Mastercard debit cards are usually cheapest. American Express and Discover are more expensive. ACH bank transfers are cheaper than cards but slower. Digital wallets like Apple Pay and Google Pay may have their own rates.
Ask the processor for a rate card—a document showing the exact fee for every card type and payment method you plan to accept. Do not accept a single rate like "2.9% + $0.30". That number is usually the Visa debit rate, and you will pay more for everything else. If a processor refuses to give you a full rate card before you sign, that is a sign they hide fees in the contract.
Calculate what you will actually pay on a typical transaction. If you sell a $100 item and your processor charges 2.9% + $0.30, you pay $3.20. On a $20 item, you pay $0.88. On a $500 item, you pay $14.80. Small margins get squeezed hard by percentage fees. If you sell low-ticket items, look for processors with flat per-transaction fees instead of percentages, even if the per-transaction fee looks high at first.
Watch for hidden fees: monthly minimums, batch fees, PCI compliance fees, gateway fees, and chargeback fees. Some processors bundle these into the percentage. Others charge them separately. A processor with a lower percentage but a $25 monthly minimum may cost more than one with a higher percentage and no monthly fee, depending on your volume.
Settlement speed and when you actually get the money
Settlement is when the processor sends the money to your bank account. This is not the same as when the customer's card is charged. The customer sees the charge immediately. You may not see the money for two to three business days, or longer if the processor batches transactions.
Most processors offer standard settlement (two to three business days) at no extra cost. Some offer next-business-day settlement for a higher fee—usually 0.5% to 1% of the transaction amount. A few offer same-day settlement, which costs even more. If you have thin margins or need cash immediately to pay suppliers, faster settlement is worth the cost. If you can wait three days, standard settlement saves you money.
Settlement speed also depends on your bank. Even if the processor sends money the next day, your bank may hold it for another day or two. Ask your bank how long they hold ACH deposits from payment processors. Some banks are faster than others.
Weekends and holidays slow everything down. If a transaction settles on Friday evening, you may not see the money until Tuesday. Plan for this if you rely on daily cash flow.
Fraud tools and chargeback protection
Every processor offers basic fraud prevention: address verification (AVS), CVV checking, and velocity checks (flagging multiple transactions in a short time). These tools catch obvious fraud but not sophisticated attacks. They also create false positives—legitimate customers get declined because their address does not match exactly.
Ask what happens after fraud is detected. Does the processor decline the transaction automatically, or do they flag it for you to review? If they decline it, can you override the decision? If you sell high-ticket items or internationally, you need control over which transactions you accept.
Chargebacks are disputes filed by customers with their bank. The customer claims they did not make the purchase, or the purchase never arrived, or it was not as described. When a chargeback is filed, the processor takes the money back from your account and charges you a fee (usually $15 to $100). You then have a window—usually 7 to 10 days—to submit evidence that the transaction was legitimate.
Ask the processor: What evidence do they accept? How long do you have to respond? What happens if you lose? Some processors offer chargeback protection insurance, which covers the fee and sometimes the disputed amount if you lose. This costs extra but protects you if chargebacks are common in your industry.
Customer support: what happens when things break
You will not need customer support until something goes wrong. A transaction fails. A customer disputes a charge. Your account is frozen. When that happens, you need to reach a human who can help, not a chatbot or an email queue.
Call the processor's support line during your evaluation. Do not wait until you have a problem. Ask: What is the current wait time? Can you reach someone by phone, or only by email? If only by email, how long do they take to respond? Do they have support on weekends and evenings, or only business hours?
Read recent reviews on independent sites (not the processor's own website). Look for complaints about support response time and whether issues actually get resolved. A processor with fast support may save you thousands if a problem costs you sales.
Some processors offer dedicated account managers for high-volume merchants. If you expect to process more than $50,000 per month, ask whether this is available and what it costs.
Integration with your existing tools
The processor has to connect to your point-of-sale system, e-commerce platform, or accounting software. This connection is called an integration. If the integration does not exist or is broken, you have to manually enter transactions, which is slow and error-prone.
Before you choose a processor, confirm they have tested integrations with your specific tools. If you use Shopify, ask whether the processor has a Shopify app. If you use Square for in-person payments and QuickBooks for accounting, ask whether the processor syncs with QuickBooks. Do not assume they do.
Ask how long integration takes. Some integrations are plug-and-play (minutes). Others require a developer and take weeks. If you do not have a developer on staff, a processor with easy integrations will save you time and money.
Test the integration before you go live. Process a test transaction and confirm it appears in your accounting software. Confirm the settlement appears in your bank account. Do not discover integration problems after you have already signed up.
Contract terms and what you are locked into
Read the contract before you sign. Look for: How long is the commitment? Can you cancel month-to-month, or are you locked in for a year? What are the early termination fees? What happens to your data if you leave?
Some processors require a minimum monthly volume or charge a monthly minimum fee. If you do not hit the minimum, you pay the difference. This can be expensive if your business is seasonal or just starting.
Ask whether the processor owns your customer data or you do. If you leave, can you take your customer list and transaction history with you? Some processors make this difficult or charge a fee for data export.
Confirm the processor is PCI compliant—they follow security standards for handling card data. Ask for their PCI compliance certificate. Do not work with a processor that cannot prove compliance.
Comparing processors side by side
| Factor | What to Ask | Why It Matters |
|---|---|---|
| Transaction fees | Full rate card for every card type and payment method you accept | Determines your cost per sale; small differences add up fast |
| Settlement speed | Standard settlement time and cost of faster options | Affects your cash flow and working capital needs |
| Fraud tools | What fraud detection they offer and whether you can override declines | Protects you from fraud but can also block legitimate sales |
| Chargeback process | Fee per chargeback, evidence they accept, time to respond, protection insurance available | Determines your cost if a customer disputes a charge |
| Customer support | Phone support availability, response time, hours of operation | Critical when a transaction fails or account is frozen |
| Integration | Whether they integrate with your POS, e-commerce, or accounting software | Determines whether you can automate or must enter data manually |
| Contract terms | Commitment length, early termination fees, monthly minimums | Determines how easily you can switch if the processor does not work |
Frequently Asked Questions
Do I need a different processor for online and in-person payments?
Not necessarily. Many processors handle both, but they may charge different rates for each. In-person payments (card present) are usually cheaper because fraud risk is lower. Online payments (card not present) are more expensive. Ask for rates for both before you choose.
What if a processor declines a legitimate transaction?
Contact the processor's fraud team and ask them to review the transaction. Provide proof that it was legitimate (shipping confirmation, customer email, etc.). If the processor's fraud tools are too aggressive, you may need to switch to one with less strict filtering or one that lets you override declines.
Can I use multiple processors at the same time?
Yes. Some businesses use one processor for online payments and another for in-person payments, or one for subscriptions and another for one-time sales. This gives you flexibility but makes accounting more complicated. Confirm your accounting software can handle multiple processors before you set this up.
What should I do if my processor raises fees?
Review your contract to see whether they can raise fees unilaterally or whether they must give notice. If they raise fees significantly, get quotes from other processors. Switching costs time but may save money if you process high volume. Negotiate with your current processor before you leave—they may match a competitor's rate to keep your business.
How do I know if a processor is trustworthy?
Check whether they are registered with the National Association of Boards of Accountancy (NABCA) or are a member of the Electronic Funds Transfer Association (EFTA). Read independent reviews on sites like Trustpilot or G2. Ask for references from other businesses in your industry. Do not rely only on reviews on the processor's own website.