How to Sell a B2B SaaS Company: The Complete Step-by-Step Process

You're a founder with a good business. Maybe great. You've built something people pay for, renewals are solid, and you're growing. At some point (maybe now) you wonder: what's this worth? And more importantly, what's the right way to actually sell it?

The answer depends almost entirely on the process you run.

Let me tell you about a founder we worked with. A PE firm had been courting him for six months. Dinners in the city, office visits, the whole romance. "You're exactly what we're looking for," they said. Deep into diligence with them, he had no idea if their offer was any good. It wasn't. They offered 4.5x ARR.

Three months later, we ran a proper process. Same founder, same company, same metrics. Clean 7.2x.

The difference: $14 million.

The PE firm hadn't done anything wrong. They'd built a relationship, created an illusion of momentum, anchored him to a number. And he let them run the process. That's the lesson: the process itself is your greatest lever. Run it right, and you'll dramatically move the needle on what you're worth.

This guide walks you through how to do it.

The Problem with Unstructured Processes

Before we get to the six-phase framework, let's be clear about why having a plan matters.

No leverage. When you're negotiating with one buyer, you have exactly zero credible alternatives. They know this. You can't threaten to walk because walking means you're back to square one. A buyer will push hard on price because the alternative (you reject the offer and they move on) doesn't actually hurt them that much.

Ceded control. A single buyer controls the pace. They can slow-walk diligence. They can drag out negotiations. While you're sitting in calls answering questions, you're not running your business. Buyers know this. They'll take their time knowing you're bleeding focus and energy.

Information asymmetry against you. A buyer has seen all your financials, your customer list, your unit economics, your growth model. If they walk, they take all that knowledge with them. A strategic acquirer might use it to build a competing product. A PE firm might share it with their portfolio companies. You've given them the blueprint for free.

A structured process flips all three of these dynamics.

The Six-Phase Timeline: 4–6 Months to Close

A well-run process takes time, but it compresses the actual uncertainty. You know what's happening, when it's happening, and why. Here's how it breaks down.

Phase 1: Preparation (4–6 Weeks)

Before you talk to any buyer, you need three things.

Financial model. This should include 3–5 years of historical financials (monthly granularity) and a 3-year forward forecast. The forecast doesn't need to be conservative. It should be ambitious but defensible. Buyers will stress-test your assumptions in diligence. If you say you'll grow 40% next year, be ready to explain why.

Confidential Information Memorandum (CIM). This is your sales document. 30–50 pages. Professionally designed and formatted. It covers your business, market, unit economics, team, financials, and why you're positioned to win. A good CIM positions your company for the specific buyers you're targeting. You're not writing one generic document. You're writing it for SaaS acquirers, or PE firms, or strategic buyers, and tailoring key messages accordingly.

Teaser. A one-page, anonymized overview. You send this first. It tells a buyer what they're looking at without revealing who they're looking at. Something like: "B2B SaaS platform serving SMB manufacturers. $3M ARR, 40% YoY growth, 92% net retention."

Buyer list. 50–150 names, tiered by fit. Tier 1 is your dream list (buyers who have a strategic reason to acquire you). Tier 2 is solid consolidators (PE firms, larger platforms). Tier 3 is a longer tail (less ideal but increases your odds of getting competitive offers). You'll want to know which tier you're pulling from and in what order.

Preparation is the most important phase because speed in later phases entirely depends on having materials that work.

Phase 2: Outreach & NDAs (2–3 Weeks)

You're now ready to reach out. Tiered outreach means you don't contact everyone at once. Tier 1 first, give them a two-week window to respond, then Tier 2, and so on. This creates psychological momentum: Tier 2 buyers see that Tier 1 is engaged, which makes them want to move faster.

All outreach goes through your banker (or you, if you're not using one). Email plus a follow-up call. The teaser is attached. The message is simple: "We're exploring strategic options. Would this be interesting to discuss?"

Critical detail: Use your NDA template. Not theirs. A buyer's NDA is designed to limit your optionality. Your template is designed to protect your information while preserving your ability to shop around.

Phase 3: Engagement (3–4 Weeks)

Buyers who are interested will sign your NDA. Now they get access to more information.

Virtual data room. A secure online repository (often run through Intralinks, DealRoom, or similar) where you've uploaded all your key documents: detailed financials, cap table, customer list and contracts, org structure, product roadmap, user agreements, incorporation docs. A buyer can browse, and you can track exactly what they're looking at and when.

Controlled information flow. You don't upload everything at once. You release tiers of information. Initial tier: financials and a customer summary. After initial questions, you release customer contracts. Then employee agreements, cap table, technical documentation. This is how you maintain control.

Management meetings. Video calls (under an hour, typically). You present the business and answer questions. Not a pitch deck walkthrough, but a conversation. This is where buyers develop a feel for whether they want to bid.

Track VDR activity religiously. Who's logged in? How much time are they spending? Are they drilling into customer contracts or just glancing at the summary? Are they coming back for more detail? This tells you who's seriously interested and who's just kicking tires.

Phase 4: LOI Phase (1–2 Weeks)

By now you've had management meetings with the most interested buyers — typically 3–5 serious prospects from your NDA pool. Some of those buyers will be genuinely interested in submitting an offer.

You send a process letter. It says: "We're ready for initial offers. Deadline is two weeks. Please submit an LOI including valuation, structure (cash vs. earnout), and any material conditions."

The deadline is critical. Without it, some buyers will delay indefinitely. With it, they know they're in a race.

Buyers submit their LOIs. Now you compare. And this is where most founders mess up: they compare headline numbers. "This one says $25M, that one says $22M."

That's backwards. You compare on structure and certainty, not just headline. $25M offered as 50% earnout contingent on hitting aggressive growth targets is worth less than $20M all cash at close. $22M from a PE firm with a clear fund and 100+ completed deals is worth more than $25M from a strategic acquirer that might lose focus during integration.

You negotiate. Usually once, maybe twice. Often "best and final" rounds where each buyer gets one shot to improve their offer. Sometimes you go "bottom-up": each buyer states their offer, and you go back to the top two or three.

Phase 5: Confirmatory Due Diligence (6–10 Weeks)

A buyer wins the LOI phase. Now the real diligence begins.

Four workstreams: accounting (financials are accurate, accounting policies are clean), tax (no liabilities lurking, no controversial treatment), legal (contracts are enforceable, no litigation, no hidden obligations), technology (code is clean, no technical debt, security is sound, scalable infrastructure).

The key metric: are they spending money? If they're engaging advisors, hiring accountants and lawyers, it means they're serious. If it's all internal navel-gazing, they're probably negotiating down.

This phase takes time. Stay organized. Respond to requests quickly. Diligence is a marathon, and deal momentum is a real thing. Delays breed uncertainty. Uncertainty breeds deal death.

Phase 6: SPA & Close (2–4 Weeks)

You've signed the LOI. Diligence is mostly wrapped. Now you negotiate the actual purchase agreement.

The SPA is 50–100 pages. It covers everything: purchase price, payment terms, working capital adjustment, representations and warranties, indemnification, escrow terms, earnout mechanics, employment agreements, non-compete, transition services, etc.

Key negotiations here:

• Working capital adjustment. You typically need to deliver the company with a certain amount of cash and minimal payables. If you're off, you owe the buyer money or they owe you.
• Reps scope. What are you actually warranting to be true? How long does the buyer have to make claims? (Usually 12–24 months.)
• Escrow. Typically 10–15% of the purchase price is held in escrow for 12–18 months to cover any breaches of your reps. This is negotiable.
• Earnout terms. If part of your consideration is contingent on hitting milestones, what exactly are those milestones, how are they measured, and what if you disagree?
• Employment terms. What's your salary post-close? Are you staying? For how long? What are the severance terms if you don't?

The buyer wants aggressive reps, long lookback periods, and big escrows. You want the opposite. You'll meet in the middle.

And then you close. Wire comes in. You're done.

Time Kills All Deals

One principle guides everything: time kills all deals. The longer a process drags, the more time for doubt to set in. For better offers to appear. For diligence to unearth something unexpected. For the buyer's circumstances to change and their appetite to shift.

Move fast. Not recklessly. But with urgency.

The M&A Timeline at a Glance

Phase	Duration	What Happens
1. Preparation	4–6 weeks	Build CIM, financial model, teaser, buyer list
2. Outreach & NDAs	2–3 weeks	Tier-based outreach, NDA signings
3. Engagement	3–4 weeks	Data room access, management meetings, VDR tracking
4. LOI Phase	1–2 weeks	Process letter, buyer submissions, LOI negotiations
5. Confirmatory DD	6–10 weeks	Accounting, tax, legal, tech diligence, adviser engagement
6. SPA & Close	2–4 weeks	Agreement negotiation, final terms, wire & closing
Total	4–6 months

This is real time, but it's compressed. You're not sitting idle. You're moving through defined phases with clear milestones and deadlines.

Why Structure Matters

The founder with the PE firm was experiencing what we call a "single-buyer process." It feels like progress (someone is interested!), but it's actually a negotiation with no leverage. The offer they received reflected what that one firm was willing to pay, not what the market would pay.

When you run a structured process with multiple real bidders, you create competitive tension. Buyers know others are bidding. They know there's a deadline. They know if they lowball, you'll take a competing offer. Prices move. Valuations expand.

That $14 million difference for our founder friend? That came directly from competitive tension.

Next Steps

If you're thinking about selling, start with preparation. Get your financials clean. Document your unit economics. Build your buyer list. And seriously consider whether you want to run this alone or bring in a banker who's done this 50+ times.