When I decided to sell my agency, I thought the hard part would be finding a buyer. It was not. The hard part was the 12 months before the buyer ever saw a document.

Cleaning up financials that had been “good enough” for years. Extracting myself from client relationships I had owned since day one. Building a management layer that could survive my departure. Documenting systems that existed only in my head.

Every agency exit I have been involved in follows the same pattern. The founders who treat it as a structured 12-month project get better offers and fewer surprises. The ones who rush it leave money on the table. Sometimes six figures of it.

This is the month-by-month checklist I wish I had when I started.

Before You Start: Two Ground Rules

Rule one: do not tell your team yet. Not until month 8 at the earliest, and even then only your senior leadership. Premature disclosure creates anxiety. Anxious teams underperform. That is the last thing you need.

Rule two: keep running the business. Buyers pay for momentum. A dip in revenue during your preparation period is visible in the trailing financials, and it costs you directly on the multiple.

Quarter 1: Foundation (Months 1 to 3)

The first three months are about getting a clear, honest picture of where you stand. No action plans yet. Just facts.

Month 1: Financial Reality Check

Pull together three years of management accounts. If you do not have proper management accounts, this is your first problem. Get your accountant to produce them.

Calculate your adjusted EBITDA for each year. Add back your full salary, personal expenses running through the business, one-off costs, and non-cash charges. The adjusted number is what a buyer will base their offer on.

When I did this, my reported profit was about £180K. My adjusted EBITDA was closer to £320K. The gap was my salary, a car, and some “business development” expenses that were really dinners with friends. Every agency owner has a version of this gap.

Also check: what percentage of revenue is recurring versus project-based? What percentage comes from your top three clients? These two numbers move your valuation multiple more than anything else.

Month 2: Valuation Baseline

You need a number. Not the number you hope for. The number the market would pay today.

Get an indicative valuation from a broker or M&A advisor who specialises in agencies. Most will do this for free as part of an introductory conversation.

When I got my first indicative valuation, it was lower than I expected. That stung. But it gave me a clear target. The gap between your current valuation and your target valuation becomes the project plan for the next nine months.

Cross-reference the broker’s view with the EBITDA multiples for your sector. For most UK agencies, you are looking at 3.5x to 5x adjusted EBITDA. Knowing the realistic range prevents you from building plans around fantasy numbers.

This month is boring but essential. Buyers’ solicitors will review everything, and issues discovered during due diligence either delay deals or kill them.

Review all client contracts. Are they in the company name, not your personal name? Do they have proper termination clauses? I discovered that three of my longest-standing clients had no written contract at all. Handshake agreements for years. That had to be fixed before any buyer would take the relationship seriously.

Check employment contracts (every team member needs a current, signed contract), IP assignments (does the company own the work?), and your shareholder agreement if applicable.

Sort out any outstanding legal issues. Anything that could surface during due diligence needs to be resolved now, not explained later.

Where does your agency stand today? Get a free, instant benchmark with the Agency Valuation Calculator. It takes three minutes and shows you exactly which areas to prioritise in your exit preparation.

Quarter 2: Operations (Months 4 to 6)

With the foundation clear, the second quarter focuses on making the business less dependent on you. This is the hardest part of the entire process.

Month 4: Owner Extraction Begins

Track every task you do for two weeks. All of it. Client calls, creative reviews, proposal writing, team management, finance, admin. Log it in 30-minute blocks.

When I did this, I found that 60% of my time went to things someone else could do. Client status calls. Reviewing junior work my creative director could have reviewed. Writing proposals that followed the same structure every time.

Start with the easiest wins: tasks clearly beneath your pay grade that someone could handle with a documented process and a week of handover. The goal is not to extract yourself from everything. It is to start the process.

The Owner Extraction Method gives you the full framework. The short version: document, delegate, verify, release.

Month 5: Systems Documentation

If you were hit by a bus tomorrow, could your team find every process, password, and procedure they need? If the answer is no, that is what month 5 is for.

Document your core operational processes: how projects are briefed, how work is reviewed, how clients are onboarded, how invoicing works. These do not need to be perfect. They need to exist.

I used a simple format. For each process: trigger (what starts it), steps (what happens), owner (who is responsible), output (what the finished result looks like). We documented about 30 core processes in a month. It was tedious. It was also one of the highest-value activities in the entire exit preparation.

Month 6: Team Structure Review

Look at your org chart. Is there a layer of management between you and the delivery team? If not, you need to build one.

At minimum, you need someone credible owning client relationships and someone owning operations. These can be existing team members promoted into more formal roles, or new hires.

When I was preparing for my exit, I promoted my senior designer to creative director and gave her full ownership of client presentations and creative sign-off. It was uncomfortable. She did things differently. Some clients noticed the shift. But within three months she had made the role her own, and the quality was at least as good.

This month is also the time to address team gaps. A buyer paying for a 12-month earnout wants to see a stable, capable team, not a founder scrambling to fill holes.

Quarter 3: Growth Proof (Months 7 to 9)

Your financials are clean, your operations are documented, and your team is running things with less input from you. Now demonstrate that the business is growing.

Month 7: Pipeline and New Business

Review your sales pipeline. A buyer wants to see forward visibility: signed contracts for the next quarter, proposals in progress, a pipeline of qualified prospects.

If your pipeline depends entirely on your personal network, that is a risk factor. Start building a new business function that generates opportunities without you: a business development hire, a content engine, or a formalised referral programme. The mechanism matters less than the proof that leads come in through a system.

During my exit preparation, I found that 70% of new business came from my personal network, client referrals, and inbound from our website content. The personal network piece would not transfer to a new owner. We invested in content and the referral programme to shift the balance.

Month 8: Recurring Revenue Push

If your recurring revenue is below 50%, this is the month to start changing that. Convert project clients to retainers. Package ongoing services into monthly agreements. Build support contracts into every project delivery.

I increased our recurring revenue from about 35% to 55% in the nine months before my exit. Just by asking every project client whether they wanted ongoing support and packaging it as a monthly retainer with a clear scope. About one in three said yes.

That shift probably added 0.5x to our EBITDA multiple. On our adjusted EBITDA, that was roughly £160K in additional enterprise value. Sound familiar? Most agencies are sitting on the same opportunity.

Month 9: Client Diversification

If any single client represents more than 20% of your revenue, you have a concentration risk that buyers will price in. Above 30% and some buyers will walk away entirely.

You cannot fire a big client to fix this. But you can grow the denominator. Focus new business efforts on acquiring clients that reduce your concentration ratio. For your largest clients, start transitioning the primary relationship to a senior team member.

I had one client at 28% of revenue when I started. By the time we went to market, they were at 19%. Not because we lost any of their work, but because we grew other accounts around them.

Quarter 4: Market Prep (Months 10 to 12)

The preparation work is done. Now you need the right people around you and the right materials in front of buyers.

Month 10: Advisor and Broker Selection

If you are pursuing a trade sale, you need a broker or M&A advisor. For an MBO or EOT, you need a specialist in that structure. Do not do this alone.

Interview at least three. Ask about their experience with agency sales specifically, their fee structure (typically a retainer plus 3 to 5% success fee), and for references from founders who have completed sales with them.

I made the mistake of initially approaching buyers myself. It weakened my negotiating position because the buyers knew I was emotionally invested. When my broker took over, the dynamic shifted immediately. A professional intermediary creates distance and leverage. A good broker earns their fee many times over.

Month 11: Information Memorandum

Your broker will lead this, but you need to provide the raw material. The information memorandum (IM) is the document that goes to potential buyers. It tells the story of your business.

The IM typically includes: business history, financial performance (three years of P&L, adjusted EBITDA), client portfolio (anonymised initially), team structure, and the investment rationale.

Spend time on the growth section. Buyers are purchasing the future, not the past. Show them a credible plan for how the business grows under new ownership. Make it easy for them to see the upside.

Your broker will format and position all of this. Your job is to make sure the underlying data is accurate and the narrative is honest. Exaggerations always surface during due diligence, and they destroy trust.

Month 12: Buyer Meetings and Negotiation

This is where the previous 11 months pay off. Buyers are looking for three things: a business that performs, an operation that does not depend on the founder, and a team that can deliver.

If you have done the work, these meetings feel natural. You can talk about systems because you built them. You can talk about team capability because you have watched them run the business for months.

Expect multiple rounds of meetings. First meetings are exploratory. Second meetings go deeper into financials. Third meetings involve the buyer’s team reviewing operations. The process from first meeting to signed heads of terms typically takes 6 to 10 weeks.

During this period, keep running the business. I have seen founders become so consumed by the sale process that the business dips. The buyer notices. The offer drops.

After Month 12: The Deal Process

Once heads of terms are signed, you enter due diligence, legal documentation, and completion. This typically takes another 8 to 16 weeks.

Due diligence is where your quarter one preparation pays dividends. Clean accounts, organised contracts, and resolved legal issues mean a smooth process. Surprises mean delays, renegotiation, or worse.

The deal will almost certainly include an earnout: 30 to 50% of the total consideration, paid over 12 to 24 months based on performance targets. Negotiate these targets carefully. They should be based on metrics you can influence, not ones the buyer controls.

The Checklist Summarised

Months 1 to 3 (Foundation):

Months 4 to 6 (Operations):

Months 7 to 9 (Growth Proof):

Months 10 to 12 (Market Prep):

This Is a Project, Not a Moment

Selling your agency is not something that happens to you. It is something you build towards. The founders who treat it as a structured project are the ones who exit on their terms.

I work with agency owners at every stage of this process. Whether you are 12 months out or 5 years out, the conversation is the same: where are you today, and what needs to change?

Take the free Agency Valuation to see where your agency stands. Or book a call and I will tell you honestly where you are on this timeline and what to focus on first.

Further Reading