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What is an ISO in merchant cash advance?

Where brokers, ISOs and funders actually sit, and who gets paid what.

Alex Makowski · Updated 30 August 2026 · 3 min read

The short answer

An ISO — independent sales organisation — sources merchants and places their files with funders, earning points on what funds rather than deploying its own capital. In practice ISO and broker are used interchangeably, though ISO often implies a larger operation with direct funder agreements and sub-brokers underneath it. ISOs and brokers originate an estimated 70 to 80 percent of all MCA volume.

The terminology in this industry is loose enough to cause real confusion on a first call, so it is worth pinning down who does what.

RoleProvides capital?EarnsCarries the risk?
FunderYesThe spread on the advanceYes
ISONoPoints on funded volumeNo
BrokerNoPoints, often via an ISONo
Sub-brokerNoA split of the broker’s pointsNo

The line between ISO and broker is more about scale than function. An ISO typically holds direct agreements with several funders, may have sub-brokers submitting through it, and takes on some file preparation. A broker may work through an ISO rather than direct. Both find merchants and neither funds anything.

How the money moves

  • The merchant applies, through a lead, a referral or outbound.
  • The broker or ISO packages the file — application, bank statements, supporting documents.
  • It goes to one or more funders, who underwrite and make offers.
  • The merchant accepts, the funder deploys capital, and the commission is paid on the funded amount.
  • If a sub-broker sourced it, the points are split.

Nobody in that chain earns anything until money moves. That is the single most important fact about the channel and it explains most of its behaviour — including why speed to lead matters so much and why a file that stalls is worse than one that declines quickly.

Why the channel is the industry

ISOs and brokers originate an estimated 70 to 80 percent of MCA volume nationally. Direct-to-merchant platforms keep growing and the channel keeps holding, because the product needs judgement that software has not replaced — reading a bank statement, structuring around an existing position, knowing which funder takes which file.

What an ISO actually does day to day

  • Acquisition — leads, referrals, renewals and outbound, which is where most of the cost sits.
  • Qualification — establishing revenue, time in business, existing positions and what the money is for.
  • Packaging — assembling a file a funder can underwrite without going back and forth.
  • Placement — knowing which funder wants which paper, which is the part that separates shops.
  • Renewal management — the most profitable deals in the book, and the most commonly neglected.

The first item is where the money goes and the last is where it is left on the table. Most shops spend heavily on acquisition and run renewals informally, which is backwards on the arithmetic.

Questions.

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