Every ISO and every sales agent in payments lives on residuals, and almost nobody outside the industry understands them. When a merchant runs a card, a slice of that transaction flows back through the processor to whoever signed the account, every month, for as long as the merchant keeps processing. That slice is the residual. Add up a few hundred merchants and you have a residual portfolio, and a residual portfolio is an asset that can be valued, borrowed against, and sold.
Where the money comes from
Start with the merchant. On every card transaction the merchant pays a discount rate and a set of per-item and monthly fees. Most of that money is not anybody's to keep: interchange goes to the card-issuing bank and assessments go to the card brands. What is left after interchange and assessments is the processing margin, and that margin is what the processor, the ISO, and the agent divide.
The processor takes its costs and its share first, usually expressed as a buy rate or a schedule of costs the ISO is charged. Whatever is above cost is the net revenue on the account, and the agreement between the processor and the ISO, or between the ISO and the agent, sets the split. Depending on the program the person who signed the account keeps anywhere from half to the large majority of that net revenue. That share, paid monthly, is the residual.
How a residual is calculated
The arithmetic is simple even if the statements are not. Gross revenue on the account, minus interchange and assessments, minus the processor's costs and fees, equals net revenue. Net revenue times your split equals your residual. Where sellers get into trouble is the difference between gross and net: a book that shows 60,000 dollars of gross revenue on the residual report might be paying the ISO 22,000 dollars a month once every cost is out. Buyers only pay for the net, and the first thing any serious buyer does is rebuild the net from the statements rather than trust the summary line. We walk through that rebuild in how to value a merchant services portfolio.
Who pays it, and what the agreement controls
The residual is paid by whoever sits above you in the chain: the processor pays the ISO, the ISO pays the sub-ISO or agent. Your agreement controls almost everything about the value of that stream. It sets the split, it says whether the residual vests to you permanently or only while you keep producing, it says whether you can assign the stream to a buyer without consent, and it usually gives the party above you a right of first refusal if you decide to sell. Those clauses are the reason two books with the same monthly number can sell for very different prices; we cover them in your contract rights when selling residuals.
Why residuals shrink
Merchants close, switch processors, get acquired, or negotiate lower rates. Every one of those events reduces the residual, and the rate at which it happens is attrition. A typical small-merchant book loses somewhere in the range of 10 to 25 percent of its accounts a year, and revenue attrition can be higher or lower than account attrition depending on which merchants leave. Attrition is the single most important number in a residual portfolio because it determines how long the stream lasts, which is exactly what a buyer is paying for. The details are in how attrition affects portfolio value.
The offset to attrition is production. An agent who keeps signing merchants replaces what leaves and the book grows. A book with no production is a melting asset, and buyers price it that way. That is also why a residual stream that is still being fed is worth more than one that has been left alone, and why some buyers pay separately for the sales engine behind a book.
Residuals as an asset: the buyout
Because a residual stream is predictable, it can be sold. A residual buyout is the sale of the future stream for a lump sum today, priced as a multiple of monthly net residual. The multiple moves with size, attrition, portability, processor, merchant mix, and production; there is no single number, and anyone quoting you one before reading your statements is guessing. What buyers pay and why is in what is a typical residual buyout multiple. Buyers are ISOs adding scale, processors buying back the books they already process, and specialist portfolio investors; if you are on that side of the table, start with merchant portfolios for sale.
Sellers usually sell for one of four reasons: retirement, a need for capital, a decision to get out of payments, or a realization that the book is worth more sold into a competitive process today than collected slowly while it attrites. Which reason applies to you determines timing, and timing is covered in sell residuals now or wait.
Lifetime residuals, and what that phrase actually means
Recruiting ads promise lifetime residuals. What they mean is that the residual is paid for the lifetime of the merchant relationship, subject to the vesting and production clauses in the agreement. If the agreement says residuals stop when you stop producing, or can be reduced when the processor changes its pricing, then lifetime is doing a lot of work in that sentence. Read the vesting language before you count on the stream, and certainly before you try to sell it.
What to do with this
If you own residuals, know your net number, your attrition trend, and your assignment rights. Those three facts are most of what determines what the stream is worth. To see the range buyers would pay for your book today, run it through the free portfolio valuation calculator or read what is my portfolio worth. If you own the whole ISO and not just the stream, the yardstick is different; start with selling your ISO.