Payment processing consulting is an outside expert review of what you pay to accept cards, followed by a plan to lower it and improve how payments perform. For a US business processing $10M or more a year, that usually means four things: finding your true effective rate, separating each fee by who receives it, pricing the same volume under a different model, and managing the switch if the numbers justify one.
This guide explains what a good engagement includes, what you need to bring, and how to judge the advice you get.
TL;DR
- A processing consultant calculates your real effective rate, itemizes every fee, and prices your volume under alternatives such as interchange-plus.
- At $10M+ a year, small differences in margin become large dollar amounts, so the review is worth doing even if you already negotiated a custom rate.
- Bring 3 to 12 months of statements. The more complete they are, the tighter the savings estimate.
- Judge a recommendation by whether it models your actual traffic, defines every pass-through fee, and covers migration, not only price.
- At 71P the review is free and carries no obligation. You see the side-by-side numbers before you decide anything.
Table of Contents
- What payment processing consulting involves
- Who uses it
- How a consultant reviews your fees and setup
- What to bring to the first review
- How to judge a consulting recommendation
- What the savings look like
- Perspective
- Get a real number for your volume
- FAQ
- Sources
What payment processing consulting involves
A consultant sits between you and the processors. You hand over your statements. They turn a document that is hard to read into a clear picture of cost, then show you what the same volume would cost elsewhere.
The work usually has five parts:
- Statement analysis. Total fees divided by total card sales gives your effective rate. If you paid $2,500 in fees on $100,000 of card sales, your effective rate is 2.5%.
- Fee breakdown. Each line is assigned to interchange, card network fees, processor margin, or add-ons such as billing products, international and currency charges, and dispute fees.
- Pricing comparison. Your real traffic is priced under another model, most often interchange-plus.
- Negotiation and selection. The consultant takes the findings to licensed processing partners and negotiates terms.
- Implementation. Contract, technical migration, card data transfer, and onboarding are planned and tracked.
The quality of a consultant shows in the last step. A spreadsheet that says you could save money is easy to produce. A subscription business that keeps billing without interruption through a processor change is harder.
Who uses it
The businesses that benefit most share two traits: high card volume and a pricing structure they cannot see into. Typical examples:
- B2B SaaS companies with $10M+ in annual recurring revenue, where large invoices and corporate cards create room for lower interchange.
- AI and usage-based software companies, where volume is variable and a spike can trigger a review or hold.
- Consumer subscription apps and memberships with web checkout, where approval rates and retries directly affect revenue.
- E-commerce businesses with high order counts, where a fraction of a percent compounds quickly.
- Marketplaces that need to know exactly what each transaction costs before setting their own fees.
- Hospitality businesses looking for cost efficiency across high-frequency card use.
If you process well under $10M a year, the savings rarely justify a consulting engagement. Your time is better spent reading your own statement using the steps below.
How a consultant reviews your fees and setup
A review follows a repeatable order. Knowing it lets you tell a thorough one from a sales pitch.
Step 1: Gather the data
You provide recent processing statements, ideally several months so seasonality shows. A useful review also needs monthly volume, transaction count, average ticket size, chargeback and refund rates, the mix of debit and credit, and your merchant category code. A consultant should also ask about your business model, because a subscription company, a marketplace and a hotel have very different traffic.
Step 2: Calculate the effective rate
The headline rate on your contract is not what you pay. The effective rate includes every charge on the statement, so it captures add-on products and fees that sit outside the percentage. It is the single number that lets you compare any two arrangements. Our explanation of the effective rate walks through the math, and the glossary definition is the short version.
Step 3: Split the fees by who gets paid
Every card payment carries three layers of cost. Interchange goes to the card-issuing bank and is generally the largest part. Card network fees go to the networks for using their infrastructure. The processor margin is what the processor keeps for itself. Add-ons such as billing products, cross-border and currency conversion, and disputes sit on top.
On a flat or blended rate, these layers are folded into one number, so you cannot see where the processor's share begins. That is the main thing a consultant brings to light.
Step 4: Model the same traffic under another structure
Under interchange-plus, interchange and network costs pass through at cost and the processor adds one fixed margin. A typical contract reads along the lines of interchange plus 0.20% plus $0.10 per transaction. PaymentBrief's comparison shows that on a $100 standard debit transaction that structure totals $0.67, against $2.90 under a 2.9% + $0.30 blended rate.
The gap on a single debit card sale is not the whole story, since premium rewards cards cost more in interchange. That is why the modeling has to use your real card mix, not an average. You can try the arithmetic yourself with the interchange-plus break-even calculator, and read the full explanation of interchange-plus pricing for worked examples.
Step 5: Look beyond price
A good review also covers performance and risk:
- Approval rates. Authentication applied only when needed, smart routing, bank-specific messaging, automatic card updating and smart retries can recover payments that would otherwise fail.
- Account holds. Knowing what triggers a processor review before a launch, a large deal or a volume spike lets you prepare rather than react.
- B2B data. Enriching transactions with Level 2 and Level 3 data can qualify eligible commercial cards for lower interchange.
- Support. Who do you call when funds are held? A named person who knows your account is a different experience from a ticket queue.
What to bring to the first review
The more complete your inputs, the closer the estimate will be to what you actually pay later. Gather:
| Item | Why it matters |
|---|---|
| 3 to 12 months of processor statements | Shows seasonality and fee changes over time |
| Monthly volume and transaction count | Sets the scale and the per-transaction cost |
| Average ticket size | Per-transaction fees weigh more on small tickets |
| Card mix (debit, credit, commercial, international) | Drives interchange cost |
| Chargeback and refund rates | Affects pricing and hold risk |
| Current contract and any custom rate letter | Reveals the terms you are comparing against |
None of this requires engineering work. It is mostly exports and PDFs your finance team already has.
How to judge a consulting recommendation
High-volume merchants should treat a recommendation like any other vendor proposal. Four checks matter most.
1. Does it use your traffic? An interchange-plus label does not make two quotes equivalent. PaymentBrief advises modeling the same merchant traffic under both offers. If a quote is built on a generic average, ask for it to be rebuilt with your numbers.
2. Are the definitions clear? Check how each quote defines passed-through fees, processing events, fixed charges, currency conversion and separately priced services. Two processors can quote the same margin and charge very differently once the definitions apply.
3. Is the margin visible and fixed? The point of the exercise is to see the processor's share. You should be able to find one explicit margin, and every other fee should be traceable on the statement.
4. Who handles the switch? Ask how card data will move under PCI rules, whether subscriptions keep running, how much engineering time is required, and who you contact during onboarding and afterward.
Already negotiated a custom rate?
Many companies assume a custom deal means they are done. Most custom deals are still a blended discount: a lower single rate, with the processor margin still hidden inside it. A consultant can compare your custom rate against interchange-plus on your real mix and tell you whether the discount holds up. Our page on Stripe fees explains what sits inside the standard rate, and reducing processing fees at scale covers the levers beyond the pricing model.
What the savings look like
Here is an illustration, not a quote. A company processing $20M a year at an effective rate of 2.9% pays $580,000 in fees. If a restructured arrangement brought the effective rate down by 0.4 percentage points, the annual saving would be $80,000. The right comparison always uses the real figures from your statements, which is why the review comes first and the proposal second.
Perspective
Most finance teams we meet know their processing is expensive. What they lack is a view inside the rate. A blended number, even a negotiated one, keeps the processor margin out of sight, so there is nothing to negotiate against.
Our approach is to start with the statement. We calculate the real effective rate, show where each fee goes, and put a dollar figure on what interchange-plus would cost at your volume. Only then do we talk about a change.
We also think price is only half the job. A lower rate does not help if approvals slip or funds are held during a launch. That is why each client has one dedicated person who knows the business and can be reached directly, and why we measure approval rate before and after a switch.
Switching should not be a project your engineers dread. We plan it, including card data migration under PCI rules, so subscriptions keep running and the effort on your side stays minimal.
the author
Get a real number for your volume
If you process $10M or more a year on Stripe, our free, no-obligation processing fee analysis shows your effective rate, where every fee goes, and what interchange-plus would cost at your volume. You can see how the steps fit together on the How It Works page, or read about moving off Stripe.
FAQ
What does a payment processing consultant do?
A consultant analyzes your processing statements, calculates your effective rate and breaks every fee into its components. They price your volume under other models, negotiate with processors, and plan the move if you switch. Good ones also look at approval rates and account hold risk.
How much does payment processing consulting cost?
It depends on the firm and its model. At 71P, the savings analysis is free and carries no obligation, and we are paid by the processing partner only when a merchant completes a switch. We do not publish a price for the analysis because there is no fee for it.
Which statements do I need for a cost analysis?
Recent processor statements covering several months, plus your monthly volume, transaction count, average ticket, card mix and chargeback rate. A longer history makes the estimate more reliable because it captures seasonality and any mid-contract fee changes.
Is interchange-plus always cheaper than a flat rate?
Not automatically. The result depends on your card mix, average ticket and the margin you negotiate. That is why the comparison should be run on your actual traffic. Our break-even calculator gives a first approximation.