What merchant discount rate means
Merchant discount rate, or MDR, is a common payments-industry name for the discount rate: the total card-processing cost deducted from a merchant's card sales. Acquirers, processors, and payment contracts use the term, especially in pricing proposals and merchant-service agreements. You may also see “merchant discount” or “discount rate” on a statement. Despite the word “discount,” it does not mean a discount you give customers. It describes the fee retained from your card proceeds.
MDR is another name for the primary term on this page. The figure can refer to a blended rate or a broader total cost, depending on how a provider presents its pricing, so compare what is included rather than treating the label as a standardized fee. Your total card cost includes interchange, network fees, and processor markup. The rest of this page explains the discount rate and how to read its cost components.
What a discount rate is
A discount rate is the fee your business pays to accept a credit or debit card. It is deducted from your card sales before the remaining funds settle to your account. The name is misleading: it is a cost to you, not a discount you receive.
The rate covers three separate costs. Interchange goes to the customer’s issuing bank. Network fees, also called assessments, go to the card network. Your processor keeps its markup for processing and related services. A rate quoted as one percentage bundles these layers together. The total is commonly described as 1%-3% of a card sale, but your actual cost depends on your pricing and transactions.
The total discount rate is your bill, but only the processor’s markup is negotiable.
How the rate is calculated
Your discount rate applies to processed card sales, and the fee is deducted as funds settle. For example, at a 2.5% rate, a $100 sale produces $2.50 in processing fees. That percentage may not tell you how much goes to the processor, because the rate can bundle interchange, network assessments and markup.
Card type and how you accept payment affect the underlying cost. Debit and credit cards have different interchange costs, and in-person payments are priced differently from online or manually entered transactions. Your processor’s markup is the negotiable layer. Interchange and network assessments are set outside your processor’s control, though accurate transaction data and eligible routing can affect which costs apply.
A percentage fee on a card sale
| Card sale | $100 |
|---|---|
| Discount rate | 2.5% |
| Processing fee | $2.50 |
Illustrative arithmetic at a stated rate. Your actual rate and other fees depend on your pricing.
Where it appears on your statement
Look for a summary line named “Discount Rate” or “MDR,” or compare your card sales with the amount deposited after processing fees. A payout summary can show the total deduction without separating its parts. On an interchange-plus statement, interchange and the processor’s markup appear separately, which makes the markup easier to identify.
Compare the total fees with card sales for the same period, then check whether the statement separates interchange, assessments and markup. If your rate is bundled, a low advertised percentage does not show the complete cost. Review per-transaction charges and monthly fees alongside the percentage, since they add to what you pay.
Why the pricing model matters
A flat or bundled rate applies one price structure across transactions, while tiered pricing sorts transactions into categories such as qualified and non-qualified. With interchange-plus pricing, interchange passes through separately and the processor adds its stated markup. These models make the same discount rate harder or easier to audit.
A quoted rate alone is not a useful comparison. Check the total processing cost against your card sales, and identify whether the markup is a percentage, a per-transaction charge, or both. A plan with a lower advertised percentage can still cost more once its transaction charges and monthly fees are included.
What you can actually change
- Separate the layers. Find interchange, assessments and processor markup on your statement. If they are bundled, ask for a breakdown showing each amount.
- Compare total cost. Divide the period’s card-processing fees by card sales for that same period. Include transaction charges and monthly fees, not just the quoted percentage.
- Negotiate the markup. Focus on the processor’s percentage markup and per-transaction charges. Interchange and network assessments are not negotiable.
- Review your pricing model. Compare your current plan with interchange-plus pricing, where the processor markup is visible separately from interchange.
Frequently asked questions
Is merchant discount rate the same as discount rate?
Yes. Merchant discount rate, or MDR, is another name for the discount rate, the total card-processing cost deducted from your sales. The label alone does not show how that cost is divided among interchange, network fees, and processor markup.
Does merchant discount rate mean a discount for my customers?
No. MDR refers to the processing cost taken from your card sales, not a price reduction you offer customers. The word “discount” describes the amount retained from your proceeds.
Where might I see MDR in my payment paperwork?
You may see “MDR” or “merchant discount rate” in a pricing proposal, merchant-service agreement, or statement. Compare the stated rate with the individual fees and charges listed, since the label alone does not identify which costs are included.