Why Most Agency Founders Start Exit Planning Too Late

Most agency founders I meet think exit planning means finding a buyer and negotiating a price. They call their accountant six months before they want to sell and ask for a set of accounts. By then, the window for meaningful tax planning has usually closed.

If you want to sell your agency for a clean exit with minimal tax, you need to involve your accountant two to three years before the sale. Not six months. Not twelve months. Two to three years.

Here is what that timeline looks like in practice, what your accountant should be doing at each stage, and how to choose an accountant for agency exit work rather than just compliance.

Stage One: Preparation (2-3 Years Before Exit)

This is where most of the value is created. And where most founders miss the opportunity.

Cleaning Up the Balance Sheet

Your agency's balance sheet is the first thing a buyer's due diligence team will scrutinise. If it is messy, they will either reduce their offer or delay the process until it is cleaned up. Neither outcome is good.

Common issues we see:

  • Large directors' loan account balances that need to be cleared or formalised
  • Undocumented inter-company loans if you have multiple trading entities
  • Old aged debtors that should have been written off
  • Accruals and deferred revenue that do not match the actual contracts
  • Shareholder loans with no formal agreement or interest charged

A good accountant will flag these two years out and give you time to resolve them. If you try to fix a £40,000 overdrawn directors' loan account in the month before a sale, you trigger a 33.75% S455 tax charge and create a cash flow problem. Fix it over two years and it is manageable.

Structuring for BADR

Business Asset Disposal Relief (BADR) lets you pay 14% capital gains tax on the first £1 million of qualifying gains, rather than the standard 20% rate. That is a saving of £100,000 on a £1 million gain. But the conditions are strict.

To qualify, you must have held at least 5% of the shares and been an officer or employee of the company for the two years immediately before the disposal. If your shareholding structure is wrong, or if you have different classes of shares with different rights, you may not qualify.

Your accountant should review your share structure at least two years before you plan to sell. If you need to reorganise, the clock starts ticking from the date of the reorganisation. Miss the two-year window and you lose the relief.

For agencies with multiple founders, the position gets more complex. If one founder holds their shares through a holding company, they may not qualify for BADR on those shares. The accountant needs to model the tax position for each shareholder individually.

Profit Normalisation

Buyers value agencies on maintainable earnings, not on one-off tax-optimised profits. If you have been running personal expenses through the company, paying yourself a low salary and taking the rest in dividends, or timing capital purchases to reduce tax, your reported profit may be lower than your real earning capacity.

Your accountant should prepare a normalised profit calculation that adds back:

  • Personal or family costs that would not continue under new ownership
  • Excessive director remuneration above market rate
  • One-off legal or professional fees
  • Non-recurring project costs or bad debts
  • Depreciation and amortisation (replaced by EBITDA)

This normalised EBITDA is what buyers will use to calculate their offer. If your accountant has not done this work before the buyer asks for it, you are negotiating from a weak position.

Stage Two: Valuation and Positioning (12-18 Months Before Exit)

Once the balance sheet is clean and the profit normalised, the focus shifts to positioning the agency for maximum value.

Understanding What Buyers Actually Pay For

Most agency founders overvalue their business because they confuse turnover with value. A web design agency turning over £800,000 with no recurring revenue and a single large client might be worth 2-3x EBITDA. A digital agency turning over the same amount with 60% retainer income and a diversified client base might be worth 5-6x EBITDA.

Your accountant should help you understand the valuation multiples that apply to your specific agency type. They should also flag the factors that depress value:

  • High client concentration (one client over 20% of revenue)
  • Low gross margins (under 40% for most agency types)
  • Poor utilisation rates (under 60% for service-based agencies)
  • Key person dependency (if the agency cannot run without you)
  • Short or no notice periods on retainer contracts

If any of these apply, you have 12-18 months to fix them before the sale. That is enough time to diversify your client base, improve margins, and build a management team that reduces your personal dependency.

Tax Structure Review

This is where the choice of accountant matters most. A general practice accountant will tell you to sell the shares and pay BADR. A specialist accountant will model the full picture, including:

  • Whether a share sale or asset sale is better for the seller (share sales are usually better for the seller, asset sales for the buyer)
  • Whether you should hold the shares personally or through a holding company
  • Whether an earn-out structure would push some consideration into a later tax year, potentially saving higher rate tax
  • Whether you have any unused losses or reliefs that could reduce the gain
  • Whether Entrepreneurs' Relief (now BADR) or Investors' Relief applies

As ICAEW qualified accountants, we model these scenarios before the deal is structured, not after. Once the heads of terms are signed, the tax position is largely fixed.

Stage Three: Deal Execution (3-6 Months Before Exit)

This is where the accountant's role becomes operational. The preparation work is done. Now it is about execution.

Due Diligence Preparation

The buyer will appoint their own accountants to conduct due diligence. Your accountant should prepare a due diligence pack that answers the obvious questions before they are asked. This includes:

  • Full set of statutory accounts for the last three years
  • Management accounts for the current year
  • Detailed revenue breakdown by client, service line, and geography
  • Staff cost analysis including contractors and IR35 status
  • Property leases, equipment leases, and other commitments
  • Key contracts with clients, suppliers, and partners
  • Intellectual property register (trademarks, domain names, code ownership)

If your accountant has been maintaining clean records throughout, this process takes weeks rather than months. If they have been catching up at year-end every year, it will be painful.

Warranty and Indemnity Negotiation

The buyer will ask for warranties and indemnities in the sale agreement. These are promises you make about the state of the business. If they turn out to be untrue, you could be liable for compensation after the sale.

Your accountant should review the warranty schedule and flag any areas where you cannot give clean warranties. For example, if your IR35 status determinations have not been documented properly, you cannot warrant that all contractors are correctly classified. The accountant should help you quantify the risk and negotiate appropriate caps or exclusions.

Stage Four: Post-Exit (After the Sale)

The sale completes, but the tax work does not end there.

Tax Return Filing

You will need to file a personal tax return reporting the capital gain and claiming BADR. This is straightforward if the structure was right. If it was not, you may need to file a disclosure to HMRC under the non-deliberate error provisions, which carries penalty risk.

Your accountant should prepare the capital gains computation and file the return within the standard deadline. They should also confirm that the BADR claim is valid and that all conditions have been met.

Post-Exit Cash Management

If you have received a significant lump sum, you need a plan for it. Your accountant should help you think through:

  • Pension contributions (up to £60,000 per year with carry forward of unused allowances)
  • ISA subscriptions (£20,000 per year)
  • Capital gains tax payment on account (due 31 January following the tax year of sale)
  • Investment strategy for the remaining cash

Most founders focus on the sale price and forget that the tax bill arrives nine months after the end of the tax year. If the sale completes in January 2026, the CGT is due by 31 January 2027. That gives you twelve months to plan, but only if you know the figure.

When to Choose an Accountant for Agency Exit Work

If you are reading this and thinking about selling in the next three years, now is the time to review your accountant's capability. A compliance-focused accountant who files your returns on time and answers your queries within a week is not necessarily the right person for exit planning.

You need an accountant who has done this before. Who knows the valuation multiples for your agency type. Who has negotiated warranties and reviewed share purchase agreements. Who understands the interaction between BADR, the directors' loan account, and your personal tax position.

If your current accountant cannot show you examples of exit work they have led, consider whether you need to choose an accountant for agency exit planning specifically. Many founders keep their compliance accountant and bring in a specialist for the exit. That is a perfectly sensible approach.

At Agency Founder Finance, we work with agency founders throughout the exit lifecycle. We are ICAEW qualified accountants who understand agency finances from the inside. Our services cover the full range from preparation through to post-exit planning.

If you are thinking about selling in the next three to five years, get in touch. We will run through the key preparation steps and give you a realistic timeline. No pressure, just practical advice.

For more on agency finance strategy, see our Growth and Exit blog or read about Agency Finance Essentials.