How Much Does It Cost to Sell a Business?

Your Exit Will Cost You 5-15% of the Sale Price

Before you fixate on a headline sale price, internalize this: selling your business is not free. Accessing that life-changing liquidity will cost you. For most tech companies and founder-led businesses, expect 5% to 15% of the final enterprise value to be eaten by transaction costs.

On a $20M deal, that’s $1M to $3M that you will not receive. On a $100M deal, it could be $5M to $15M.

These are not minor deductions; they are significant cash outflows that determine your net proceeds. The good news is they are predictable. This guide breaks down every line item, from the obvious to the non-obvious, so you can model your exit accurately and avoid expensive surprises.

The Biggest Check You’ll Write: Your M&A Advisor

The single largest expense, by far, will be the fee you pay the M&A advisor or investment banker who runs your sale process. A great advisor doesn't just run a process; they create the market that gets you the best possible price and terms. A mediocre one can leave millions on the table. This is not the place to be penny-wise and pound-foolish.

How M&A Advisor Fees Work

Most M&A advisory engagement letters have two core components:

1. The Monthly Retainer: A fixed fee paid during the 6-12 month sale process. This covers the significant upfront work of building the financial model, writing the Confidential Information Memorandum (CIM), developing buyer lists, and managing initial outreach. It ensures the bank is compensated for their time, even if a deal doesn't close.

Typical Cost: $10,000 - $25,000 per month. · Founder Tip: The retainer should always be 100% creditable against the success fee at closing. If you paid $75,000 in retainers and the calculated success fee is $600,000, you should only pay an additional $525,000 at close. If a bank argues this point, it's a red flag.

2. The Success Fee: The majority of the compensation, paid only if and when the deal closes. This is almost always calculated as a percentage of the total enterprise value.

Typical Structure: While the old-school "Lehman" or "Double Lehman" formulas still exist, they are less common for tech deals. Most boutique investment banks use a simpler formula for deals under $100M: · A flat percentage: Most common is a 3-6% flat fee on the enterprise value for deals in the $10M-$50M range. · A tiered structure: This incentivizes the banker to get a higher price. For example: 3% on the first $20M, 5% on the next $10M, and 8% on any value above $30M.

Common Mistake: Focusing on the Fee Percentage

You may get one proposal for a 3% fee and another for 5%. The cheaper option is not automatically better. Ask each banker who the three most likely buyers are. Ask about their relationships at those specific companies. The banker who can get a second credible bidder to the table is the one who will create an auction and drive the price up by 10-30%, making their higher fee an incredible bargain.

The Upfront Investment: Getting Your House in Order

Before you even think about talking to buyers, you must invest in preparing your company for scrutiny. Skipping this step is a guarantee that buyers will find problems, and they will use those problems to demand a price reduction (a "re-trade").

The Most Important Document: The Sell-Side Quality of Earnings (QoE) Report

This is non-negotiable. A sell-side QoE is a deep financial audit performed by a reputable third-party accounting firm before you go to market. They tear apart your revenue recognition, customer contracts, and accounting practices to produce a report that validates your financial claims.

Typical Cost: $30,000 - $75,000+, depending on the complexity of your business. For a complex business, this can exceed $100,000. · Why It’s Mandatory: A QoE allows you to control the narrative. It finds and fixes your accounting issues on your own terms. Without it, the buyer commissions their own QoE, which is designed to find problems that justify a lower price. A clean sell-side QoE from a respected firm signals you are a serious, professional seller and builds massive trust, accelerating the deal.

Legal: Pre-Sale Corporate Cleanup

Your M&A lawyer will perform a preliminary due diligence review of your own company to flag and fix issues. This is a crucial step to ensure a smooth legal diligence process later.

Typical Cost: $10,000 - $25,000 in hourly fees. · What They Find: Unsigned IP assignment agreements from early engineers or contractors, missing board consents for option grants, ambiguous language in customer change-of-control clauses, or a messy cap table. Finding these issues 12 months before a sale is an administrative task; finding them during buyer diligence is a five-alarm fire that can kill a deal.

Deal Execution: The 90-Day Sprint to Closing

Once you sign a Letter of Intent (LOI) with a buyer, you enter a 60-90 day period of exclusive, intense due diligence. Your costs will accelerate here.

M&A Legal Fees

This is where your M&A lawyer truly earns their fee. Their team is responsible for negotiating the definitive purchase agreement, managing the disclosure schedules, and quarterbacking the entire legal process to closing. Do not use your general corporate counsel for this; it requires highly specialized expertise.

Typical Cost: The 1-3% rule of thumb is too broad. For a sub-$50M tech company acquisition, you should budget $100,000 to $300,000 for M&A legal fees from LOI to close. Simple deals might be less, but complex carve-outs or deals with significant IP or regulatory issues can easily cost more. · What you pay for: Their expertise in negotiating what is "market" for reps & warranties, indemnity caps, basket sizes, and escrow details. Their fee is an insurance policy against post-closing liabilities that could claw back millions of your proceeds.

The Game Changer: Reps & Warranties Insurance (RWI)

This is the biggest change in M&A over the past decade. RWI is an insurance policy that covers breaches of the representations you make about your business in the purchase agreement. In the past, sellers would have to set aside 10-15% of the deal price in an escrow account for 12-24 months to cover potential claims.

How it works: Today, the buyer almost always purchases an RWI policy. The cost of the premium (typically 2-3% of the coverage amount) is often split between buyer and seller or negotiated into the final price. · Why it matters for you: RWI has largely replaced seller-funded escrows. This means you get a much larger percentage (often 95%+) of your money at the close, dramatically reducing your post-closing risk.

The Hidden & People-Related Costs

These are the costs that don't show up on a simple budget but can have a massive impact.

Employee Transaction & Retention Bonuses

Your team gets the deal done, and key players are essential for a smooth transition. You need to budget a "carve-out" from the sale proceeds to reward and retain them. This comes out of the sellers' (your) pocket.

Transaction Bonuses: For key finance, legal, or operations people who do huge amounts of work during diligence. Think of it as a spot bonus equal to a percentage of their salary. · Retention Bonuses: For key engineers or leaders the buyer needs to keep. Packages often range from 25% to 75% of annual salary , vesting over the 12-24 month period post-close. · Rule of Thumb: Budget 1-3% of the total enterprise value for a "bonus pool" to cover these costs.

The Cost of Your Time & Distraction

This is the single greatest hidden cost. For 6-12 months, running the sale process becomes the CEO's full-time job. Your focus is wrenched away from customers, product, and growth. Your calendar will be a nightmare of:

Management presentation practice sessions. · Back-to-back meetings with different buyers. · Late-night calls with bankers and lawyers reviewing terms. · Personally reviewing thousands of lines in the virtual data room. · Managing your executive team's morale without revealing the process.

The biggest risk in a sale process is that the business's performance dips. If revenue flattens or you miss your forecast, buyers will lose confidence and may lower their price or walk away. You must have a strong COO or #2 who can keep the business running while you focus on the transaction.

The "Dead Deal" Cost

Over half of M&A processes that begin fail to close. If your deal collapses after signing an LOI, you don't get your legal and accounting fees back. You could easily have spent $100,000 to $200,000+ on QoE costs, legal bills, and M&A advisory retainers with absolutely nothing to show for it but a distracted team and a damaged business.

How to Apply This Today

If an exit is on your 1-3 year horizon, preparation starts now.

Close Your Books Like a Public Company. Starting this month, ensure your financials are GAAP-compliant. You should be able to close a quarter and have board-ready financials within 15 days. · Build a Pre-Sale Data Room. Create a secure folder. Start gathering and organizing your certificate of incorporation, cap table, all IP assignment agreements for every employee and contractor ever, board consents, and major customer contracts. · Get a Referral to an M&A Lawyer. Don't hire them yet. Just have a 30-minute introductory call. Ask them what the top three mistakes founders make in preparing for a sale are. · Ask Your CPA About a QoE. Discuss what a sell-side Quality of Earnings report would entail for your business. Understand the likely cost, process, and timeline. · Empower Your #2. The best way to prepare for an exit is to make yourself progressively redundant from day-to-day operations. Your job is to build the business; their job is to run it. · Focus on What Matters. A business with accelerating growth, delighted customers, and a locked-in team is a business buyers will fight over. That leverage is what will truly maximize your price and make every dollar of transaction cost worthwhile.