Nearshoring contracts: US merchant processing for B2B card and ACH

The nearshoring story of 2023–2025 brought billions of dollars of manufacturing capacity from China to Mexico. The operators winning the contracts — automotive parts in Monterrey, electronics assembly in Tijuana and Juárez, furniture in Guadalajara, industrial components across Bajío — are now sitting on something most never had before: meaningful US B2B revenue paid in USD, with US buyers asking to pay by commercial card or ACH instead of wire.

This is a different payment problem than the DTC e-commerce challenge most cross-border content covers. The economics are different. The acquirer relationships are different. The optimization levers are different. This piece walks through what nearshoring operators need to know.

What changes when your customer is a US business, not a US consumer

Consumer e-commerce: thousands of $50–$500 card-not-present transactions, 2–6% return rates, chargeback management as a structural cost. Nearshoring B2B: dozens of $5K–$500K transactions, near-zero chargebacks (B2B buyers do not dispute through their card issuer; they file invoice complaints), and a completely different interchange structure.

Three specific dynamics matter:

1. Commercial card interchange is its own world. When a US business pays your Wyoming LLC with their corporate Visa, Mastercard, or Amex card, the interchange is structured by Level 1, Level 2, and Level 3 data submission. Level 1 (default) pays the highest interchange — typically 2.50–2.95% on commercial cards. Level 2 (sales tax data added) reduces it by 20–40 basis points. Level 3 (line-item detail submitted: SKU, description, quantity, unit price, freight) reduces it further to as low as 1.80–2.20%. On USD $500K monthly commercial card volume, the difference between Level 1 and Level 3 is USD $3,500–$4,750 monthly in interchange savings. Real money. Most operators leave it on the table because their gateway is not configured to submit Level 2/3 data, and their processor never mentioned the lever.

2. ACH is the larger volume rail. US B2B buyers above USD $10K per invoice strongly prefer ACH. The buyer’s AP department processes the ACH at near-zero cost; the buyer’s commercial card limits and rewards do not factor; reconciliation is cleaner. As a nearshoring operator, you want to make ACH frictionless to capture this. That means NACHA-compliant ACH origination through your merchant account, which is a separate enrollment from card processing.

3. T+1 settlement matters more. US B2B buyers expect predictable payment timing. T+5 settlement is common at aggregators; T+1 or T+2 is standard at relationship-driven acquirers. For Mexican manufacturers running supplier payments in MXN on a known weekly cadence, T+1 or T+2 settlement to the US bank account, with MXN repatriation on a predictable schedule, makes operations smoother.

The structure for nearshoring revenue

The same six-component stack we use for Mexican DTC operators applies, but the configuration of each component is tuned for B2B volume:

1. Wyoming LLC — same. The US legal entity that accepts US B2B payments.

2. EIN — same. Required for all US business banking and processing.

3. US business address — same. Real coworking, real mail handling.

4. US business bank account — same. Opened in-house through our banking partners.

5. US merchant processing account configured for commercial card volume. This is where the configuration differs. We enroll you with an acquirer comfortable with B2B card transaction patterns (higher AOV, lower frequency, near-zero chargebacks, commercial card interchange). We configure the gateway to submit Level 2 and Level 3 data on every transaction. We set up ACH origination through NACHA-compliant pathways. We tune T+1 or T+2 settlement timing.

6. Cross-border settlement corridor configured for predictable cadence. USD in from US B2B buyers, MXN to your Mexican operating company on a known schedule that aligns with your supplier payment cycle. The corridor is in-house — no third-party FX specialist taking a spread.

The Level 2/Level 3 lever in detail

Most operators have heard of “commercial card interchange optimization” but few understand the mechanics. Here is what actually happens:

When a US business swipes their corporate Amex at your checkout, the transaction carries a Level 1 data set: total amount, merchant name, MCC. The card network charges Level 1 interchange — typically 2.95% for Amex commercial, 2.50% for Visa Business.

If your gateway is configured to also submit:

• Sales tax amount
• Customer code
• Tax-exempt indicator

That is Level 2 data. The transaction qualifies for Level 2 interchange — typically 2.55% for Amex commercial, 2.10% for Visa Business. A 40 basis point reduction.

If your gateway additionally submits:

• Line-item details (SKU, description, quantity, unit price for each item)
• Freight amount
• Duty amount
• Discount amount
• Ship-from postal code

That is Level 3 data. The transaction qualifies for Level 3 interchange — typically 1.95% for Amex commercial, 1.80% for Visa Business. Another 30–60 basis point reduction.

The recovery on USD $500K monthly commercial card volume:

• Level 1 → Level 2: USD $2,000/month, USD $24,000/year
• Level 2 → Level 3: USD $1,500/month, USD $18,000/year
• Combined Level 1 → Level 3: USD $3,500/month, USD $42,000/year

For a nearshoring operator doing USD $5M annually in commercial card volume, Level 3 enrichment represents a quarter-million dollars in annual interchange savings. That recovery alone makes the entire engagement pay for itself inside the first 60 days.

ACH origination — the operational layer

ACH origination requires your merchant account provider to be either an Originating Depository Financial Institution (ODFI) themselves or to have a relationship with one. The processing model:

1. US buyer authorizes ACH debit from their bank account
2. Your gateway initiates the ACH file submission
3. Funds settle to your Wyoming LLC’s US bank account on T+1 or T+2

Costs are dramatically lower than card processing — typically USD $0.25–$0.50 per ACH transaction regardless of dollar amount, versus 2–3% for card processing. For a USD $50K invoice paid by ACH instead of commercial card, you save USD $1,500 in processing fees.

We set up NACHA-compliant ACH origination as part of the standard nearshoring engagement, with appropriate originator agreements and the SEC code framework that fits your B2B model (CCD for corporate-to-corporate, WEB for online-authorized, or PPD for personal-to-business if applicable).

What this looks like in our engagement

A typical nearshoring engagement runs at the upper end of our setup-fee range (USD $8K–$12K) because the configuration work is more involved than a standard DTC setup. The recurring savings on commercial card interchange and ACH cost typically make back the setup investment inside the first 60–90 days.

The full structure — Wyoming LLC, US banking, merchant processing tuned for B2B card and ACH, cross-border MXN settlement — is covered on the Mexico → US payment page. The nearshoring configuration is the most common variant we deliver for Mexican operators.

You stay in Mexico. We handle every US-side touchpoint. Your US B2B customers see a US entity paying for the goods they buy, with descriptor strings that recognize your business, settlement on a schedule that supports their AP cycle, and interchange categories that capture the savings most of your competitors leave on the table.

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Running a Mexican manufacturing operation with new US B2B contracts? Start with the pre-screening questionnaire. We respond within one business day with a clear next step and an interchange-savings estimate based on your projected commercial card volume.