Also called: Payment Service Provider, PSP
What a payment service provider is
A payment service provider (PSP) is a third-party company that helps your business accept electronic payments. Depending on the service, you can take credit and debit cards, digital wallets, and other payment methods through one setup instead of arranging each connection separately.
A PSP can combine payment technology with processing and connections to acquiring banks. The label does not tell you exactly which services are included. One provider might supply a payment gateway and processing, while another also supplies a payment interface, reporting, fraud tools, or access to a merchant account.
A PSP can simplify payment setup, but the provider’s label alone does not tell you what you pay or who holds your funds.
How a PSP handles a payment
For an online card sale, your checkout sends payment details through the PSP’s systems to an acquirer. The acquirer routes the request through the card network to the customer’s issuing bank, which approves or declines it. The response travels back through the same chain to your checkout.
After approval, the payment is processed and funds are sent to your business account. This chain connects your customer, your business, the acquirer, the card network, and the issuer. If a payment is declined, the authorization response returns to your checkout, but no card sale is completed.
What it means for your costs
A PSP’s price depends on its fee model and the services included. Your bill can combine transaction charges with monthly fees or add-ons. For card payments, the underlying cost has three parts: interchange paid to the issuing bank, network fees, and processor markup. Only the markup is negotiable, as of 2026.
A single bundled rate can make it hard to see which part of your card bill is provider markup and which part is a pass-through cost. Compare the quoted rate with the actual charges on your merchant statement, including separate monthly, gateway, and per-transaction fees. The research does not establish one standard PSP fee schedule.
Who remains responsible
When your business sells the goods or services, your business remains the merchant of record and handles its tax responsibilities and chargeback disputes. A PSP can provide fraud tools and compliance support, but those services do not transfer those responsibilities to the PSP.
Some PSP arrangements use shared or pooled accounts and set terms that limit your control over funds. Before signing, find out whether your account is dedicated or pooled, when funds are paid out, what can trigger a hold, and which support and dispute services are included.
What you can actually change
- Get the full price list. Ask for transaction rates, monthly charges, gateway fees, and optional service fees in writing. Match each charge to the services your business uses.
- Compare account terms. Confirm whether funds sit in a pooled or dedicated account, the payout schedule, and the conditions that allow a reserve or hold.
- Check the card markup. Separate interchange and network assessments from the processor’s markup. Compare the markup and recurring charges across offers, not just the headline rate.
Frequently asked questions
Is a PSP the same as a payment processor?
Not always. A PSP is a broad label for a company that helps your business accept payments and can combine a gateway, processing, and acquiring connections. A payment processor handles transaction processing, but the exact services in a PSP arrangement depend on the provider.
Does a PSP give my business a merchant account?
Some PSP arrangements include access to a merchant account or use a shared account structure. Others connect your business to a separate account. Find out whether your account is pooled or dedicated and how that affects payouts, reserves, and access to funds.
Can a PSP lower my processing costs?
A PSP can simplify payment setup, but that alone does not guarantee lower fees. Compare the processor markup, transaction charges, monthly fees, and add-ons. Interchange and network fees are separate underlying card costs, while the processor markup is negotiable.