If you own a payments business and you are thinking about selling, the first question is always the same: what is it worth. The honest answer is that payment companies are not all valued the same way. What you actually own decides the yardstick. A residual portfolio, an ISO with a sales team, a payfac, and a payments software business each get valued differently. This guide walks through how buyers think about each one, what moves the number up and down, and how long a sale usually takes.
Start with what you own
The single biggest driver of your valuation method is the type of business, not the logo on the statements. Here is how buyers approach the four most common payments profiles.
- Residual portfolio or merchant book: valued on the residual income stream. Buyers look at monthly net residuals, attrition, and buy-rate and processor terms. These usually trade on a multiple of monthly residuals or annualized cash flow.
- ISO with a real sales engine: valued on adjusted EBITDA or cash flow, with a premium when there is a repeatable sales and marketing machine driving new merchant growth, not just a static book.
- Payfac or payments-led platform: valued closer to software multiples than to ISO multiples, because of embedded distribution, take rate, and recurring revenue.
- Payments software or ISV (vertical SaaS with payments): valued on recurring revenue and EBITDA the way software companies are. A strong payments attach rate can lift the multiple meaningfully.
A quick word on multiples: the exact number is set by the market, not a formula. It moves with attrition, concentration, contract quality, growth, and how many qualified buyers are actually at the table. Treat any headline multiple you read online as a starting point, not a quote. For the deeper math on the first two, see our guides on how to value an ISO or merchant portfolio and merchant portfolio valuation. If what you own is a residual stream or merchant portfolio, ResidualsForSale.com, the 733Park practice dedicated to residual and portfolio sales, has a free portfolio valuation calculator that returns a confidential range in under a minute.
What buyers actually pay for
- Recurring, predictable revenue. Net residuals that renew, or software ARR that renews.
- Low attrition and high retention. Sticky merchants are worth more than a bigger book that leaks.
- Diversification. Heavy concentration in one processor, one partner, or a few large merchants is a discount.
- Contract quality and portability. Can the buyer keep the economics after the deal closes.
- Take rate and margin, and a growth rate with a real engine behind it.
- Technology and PayFac or embedded-payments capability that a strategic buyer wants.
- Clean financials and clearly documented owner add-backs.
What drags the number down
- High or rising attrition, or volume that is quietly declining.
- Single-processor or single-partner dependence.
- Messy or non-portable contracts and undocumented add-backs.
- A business that depends entirely on the owner, with no team to run it after close.
How long does it take to sell a payments or software company?
For a well-prepared company, plan on a few to several months from going to market to a closed deal, and longer if the business is not exit-ready when the process starts. Preparation is the biggest variable in both the timeline and the price. Companies that get their financials, contracts, and attrition story in order before launch move faster and hold their number in due diligence. Companies that start cold spend the first two months fixing things a buyer will otherwise use to chip the price. The work that sets up a clean, fast process happens well before launch, which is the whole point of exit planning 12 to 36 months out. For the full phase-by-phase timeline, see how long it takes to sell a software company.
How are AI and fintech companies valued for acquisition?
AI and fintech targets are valued on a blend of recurring revenue, growth rate, gross margin, and strategic value to the specific acquirer. Earlier-stage AI companies are often valued on forward-looking growth and defensibility rather than current profit, so the multiple reflects where the business is going, not just where it is. As with payments, the real number is what a qualified strategic or financial buyer will pay in today's market, which is why a targeted process that reaches the right buyers matters more than any rule of thumb. We break down the two-track math in how AI companies are valued for acquisition.
Get your real number before you negotiate
A market valuation is not a spreadsheet output. It is what a qualified buyer will actually pay for your business right now. The fastest way to get to that number is a short conversation with someone who sells these companies for a living, backed by a real valuation to frame the range.
733Park has spent 25 years in payments M&A, closed 200+ deals, and works on transactions from $5M to $350M. When you work with us you work directly with a senior partner, not a junior associate. Start with the free portfolio valuation calculator, or start a confidential conversation. If you are weighing whether to run a full process, our guide on what you actually keep when you sell shows why structure, not just the headline price, decides your net proceeds.
Frequently asked questions
How are payment processing companies valued?
By type of business. Residual portfolios are valued on the residual income stream, ISOs on adjusted EBITDA plus the value of their sales engine, and payfacs and payments software companies on recurring revenue and EBITDA closer to software multiples. In every case the final number is driven by attrition, concentration, contract quality, and growth, and it is set by what qualified buyers will actually pay. 733Park has valued and sold these businesses for 25 years across 200+ closed deals.
What multiple do merchant portfolios and ISOs sell for?
Merchant residual portfolios typically trade on a multiple of monthly residual income or annualized cash flow, and ISOs on a multiple of adjusted EBITDA. The specific multiple varies widely with attrition, processor concentration, buy-rate terms, and buyer demand, so a portfolio with low attrition and clean contracts earns a materially higher multiple than a bigger book that is leaking. Get an actual valuation before anchoring on a number.
How are payfacs and payments software companies valued differently from ISOs?
They are valued more like software than like a residual book. Embedded distribution, a healthy take rate, and recurring software revenue push the multiple higher than a pure ISO, because the buyer is acquiring a platform and a durable revenue stream rather than a book of residuals that can attrite.
What increases the value of a payments business?
Low attrition, recurring and diversified revenue, portable contracts, a take rate and margin that hold up, real growth with an engine behind it, PayFac or embedded-payments capability, and clean documented financials. Reducing owner-dependence and customer or processor concentration before you go to market are two of the highest-return things you can do.
How long does it take to sell a payments or software company?
Usually a few to several months from launch to close for a well-prepared business, and longer if it is not exit-ready when the process starts. Preparation is the biggest variable in both the timeline and the final price. Companies that fix their financials, contracts, and attrition story before launch move faster and hold their number in due diligence.
How are AI and fintech companies valued for acquisition?
On a blend of recurring revenue, growth, gross margin, and strategic fit with the specific acquirer. Earlier-stage AI is often valued on forward growth and defensibility rather than current EBITDA, so the multiple reflects trajectory. As with payments, the real number is what a qualified strategic or financial buyer will pay in today's market, which is why a targeted process that reaches the right buyers matters more than any rule of thumb.