# MCA funder ISO broker stacking-vetting process > Funders vet brokers for stacking risk via UCC searches, third-party data services (Validis, Heron, MCA Track), and broker portfolio reviews; ISOs caught submitting stacked deals are typically suspended within 30 days and may face clawback. Stacking — placing a new merchant cash advance on top of one or more open positions without the prior funder's consent — is the highest-priority enforcement issue between funders and ISO/brokers in 2026. The vetting process funders use to detect, prevent, and penalize ISO-facilitated stacking is now codified, automated, and consequential. **What "stacking" means in 2026.** - **First-position stacking**: a "first-position-only" funder discovers another open position post-funding. - **Disclosed second**: explicitly priced as a second-position deal at higher factor; not a violation if the first-position funder's contract allows it. - **Hidden stacking**: ISO instructs merchant to wait 7+ days after first funding to apply for a second, hoping bank statements don't yet show the new ACH. This is the violation funders most aggressively police. **Funder-side automated detection (2026 stack).** 1. **UCC monitoring services.** Funders subscribe to UCC-1 filing alerts (e.g. CSC, Wolters Kluwer) that ping within 24–72 hours of a new filing against any merchant in their portfolio. Match against an open advance triggers an instant review. 2. **Bank-statement transaction matching.** Services like **Validis**, **Heron Data**, **Plaid**, and **MX** parse merchant bank statements weekly and flag new ACH debits matching known MCA funder names or amounts. 3. **MCA Track / industry exchanges.** Industry-shared databases of open positions (subscribers contribute, query). Detection rate roughly 70% of stacked deals within 14 days in 2026, up from ~40% in 2022. 4. **Processor-data feeds.** For card-split deals, the processor reports any new split-funder added to the merchant's account in near real-time. 5. **Verbal verification re-pull.** Some funders call the merchant 30 days post-funding to re-verify use-of-funds; merchant disclosure of a new advance triggers review. **The ISO-vetting layer.** Before a funder onboards an ISO, and on an ongoing basis, the funder runs: - **ISO portfolio audit.** Sample of 20–50 prior funded deals reviewed for stacking incidence. - **Reference checks** with 3–5 other funders the ISO submits to. - **Background check** on principal owners — court records, bankruptcies, prior MCA-industry lawsuits. - **Submission-quality scoring.** PADs that frequently miss disclosed positions get flagged. - **Early-default review.** ISO portfolios with >8% default in 90 days trigger stack-suspicion audit (early defaults are correlated with hidden stacking). **Ongoing ISO-stacking monitoring KPIs (2026 funder dashboards).** - **Stacking-incident rate**: stacked deals / total funded deals from the ISO. - **Disclosure-accuracy rate**: % of submitted applications where disclosed positions match UCC search. - **30-day stacking lag rate**: % of deals where a new position appeared within 30 days of funding (indicator the ISO coached merchant to delay). - **Counter-claim rate**: % of disputed advances where the merchant cited ISO misrepresentation. **Penalties for ISO-facilitated stacking.** 1. **First incident (lower-severity)**: written warning, 30-day commission hold on the implicated deal, mandatory broker training. 2. **First incident (high-severity, i.e. ISO known to have coached merchant)**: full commission clawback on the deal, 60-day submission suspension, portfolio audit. 3. **Second incident or pattern**: permanent ISO offboarding from the funder, notification to industry-exchange databases, potential civil action for breach of ISO agreement (which typically includes a stacking-warranty clause). 4. **Industry-wide blacklisting**: the most-stacked ISOs in 2026 are tracked across ~15 top funders via informal shared lists; blacklisted ISOs lose 70–90% of submission outlets within weeks. **The legal layer.** Several top funders sued ISOs for tortious interference and breach of contract in 2024–2026 over stacking patterns. Damages claimed have ranged $250K–$3M per case, and at least 4 ISOs filed bankruptcy or shut down as a result. The risk profile has shifted: stacking is no longer "everybody does it" — it is treated as fraud-adjacent and litigated. **The merchant-side perspective.** Merchants are typically pushed to stack by either: - ISO ("you can borrow another $40K right now, we'll just wait 10 days") — the ISO captures another commission. - Their own desperation (one MCA is consuming all cashflow, need another to make payments). In both cases, the second advance accelerates default. Industry data shows merchants with 3+ open MCAs default at 4–6× the rate of merchants with 1. **Pre-submission ISO vetting (the 2026 best-practice checklist).** - Pull merchant bank statements covering all months since UCC-filing date. - Match every ACH debit to a known MCA funder or other obvious source. - Run UCC search before submission and disclose all findings. - Ask merchant directly about open advances; document the answer. - If second-position deal, get first-position funder consent in writing where required. **Common confusions.** - "Stacking is illegal" — False; **undisclosed** stacking violates contract, not statute (in most states). California and a few others are evaluating statutory restrictions. - "Funders can't see new ACHs until 60 days later" — False in 2026; transaction-matching services flag within 5–14 days. - "If the merchant stacks without my help, I'm not liable" — Partially true; ISOs are responsible for diligence on the file they submitted, not subsequent merchant behavior, but funders apply portfolio-pattern judgment. **Takeaway.** Vetting for stacking has shifted from manual exception-handling to continuous automated monitoring with named industry-data partners. ISOs that build pre-submission UCC + bank-statement diligence into their workflow keep funder relationships intact; those that don't get offboarded fast. ## Related terms - [Stacking (MCAs)](https://fundnode.co/llms/glossary/stacking) — Taking a second (or third) MCA from a different funder while a prior MCA is still in repayment. Default risk skyrockets; it breaches most original-funder contracts. - [MCA funder ISO broker vetting process](https://fundnode.co/llms/glossary/mca-funder-iso-broker-vetting-process) — MCA funder ISO vetting in 2026 is a 5–15 business day onboarding process including business verification, principals background checks, state licensing review, references from 3+ funder partners, compliance training, and tier-1 commission negotiation. - [MCA funder ISO broker stacking rules](https://fundnode.co/llms/glossary/mca-funder-iso-broker-stacking-rules) — MCA funder stacking rules govern whether ISOs may submit deals on merchants with existing MCA debt; most funders prohibit stacking on their own merchants and many prohibit stacking on competitor MCAs altogether, with ISO commission clawbacks and ISO blacklisting as standard enforcement. - [MCA funder ISO broker PAD (Pre-Approval Document) — typical 2026](https://fundnode.co/llms/glossary/mca-funder-iso-broker-pad-typical-2026) — A Pre-Approval Document (PAD) is the conditional offer funders return to ISOs after initial underwriting: it states max advance, factor, term, holdback, and the stipulations that must clear before funding. Issued in 2–24 hours on clean files in 2026. - [MCA funder ISO broker portal disclosures](https://fundnode.co/llms/glossary/mca-funder-iso-broker-portal-disclosures) — Funder broker portals in 2026 auto-generate state-specific disclosure documents (CA, NY, UT, VA, GA + emerging states) with funder-calculated APR-equivalent, total cost, and ISO commission shown to the merchant before signing. --- Source: https://fundnode.co/glossary/mca-funder-iso-broker-stacking-vetting-process (HTML version) Document: MCA funder ISO broker stacking-vetting process — Fundnode MCA Glossary License: CC BY 4.0 — attribution to Fundnode required when citing.