If you've built a digital agency from scratch, the sale is the moment you finally cash in. But the taxman takes a significant cut of that gain unless you plan ahead.
Business Asset Disposal Relief (BADR) is the single most valuable tax relief available when you sell your agency. It reduces your Capital Gains Tax (CGT) rate from 20% to 14% on the first £1m of qualifying gains. For a founder selling a 12-person digital agency billing £800k per year, that difference could easily be £50,000 or more in your pocket rather than HMRC's.
But BADR isn't automatic. You have to meet specific conditions, and you need to start meeting them well before you begin the sale process. Here's exactly what you need to know as an agency founder.
What is Business Asset Disposal Relief?
BADR was previously called Entrepreneurs' Relief. The name changed in 2020, but the core relief stayed the same. It's a relief that reduces the rate of CGT you pay when you sell all or part of your business.
without BADR, you pay 24% CGT on gains from selling shares in your agency (assuming you're a higher rate taxpayer). With BADR, you pay 14% on the first £1m of gains you make in your lifetime. Gains above £1m are taxed at the normal 24% rate.
Let's put numbers on it. You sell your agency for £1.5m. Your shares cost you £100 when you set up the company. Your gain is £1,499,900. With BADR, you pay 14% on the first £1m (£100,000) and 20% on the remaining £499,900 (£99,980). Total tax: £199,980. without BADR, you'd pay 24% on the full gain: £299,980. That's a £100,000 difference.
For most agency founders selling a business worth between £500k and £5m, BADR is the difference between a comfortable retirement and a frustrating one.
Who Qualifies for BADR?
The conditions for BADR are specific. You must meet all of them for the 24 months immediately before the sale. Here's what HMRC looks at.
You Must Be a Director or Employee
You need to be an officer or employee of the agency. That means you're on payroll, drawing a salary, and recorded as a director at Companies House. A silent shareholder who doesn't work in the business doesn't qualify.
If you've stepped back from day-to-day operations but remain a director, you still qualify. If you resigned as director and stopped working 18 months before the sale, you don't.
You Must Hold at Least 5% of the Shares
You need to own at least 5% of the ordinary share capital of the company. That 5% must give you at least 5% of the voting rights and 5% of the profits available for distribution.
This catches out founders who dilute their stake too far before exit. If you've taken on investors and now hold only 4%, BADR doesn't apply to your shares. You'd pay 20% on the gain.
The Company Must Be a Trading Business
Your agency must be a trading company. HMRC defines this as at least 80% of the company's activities being trading activities rather than investment activities.
For most marketing agencies, digital agencies, creative agencies, and PR agencies, this is straightforward. You sell services, not investments. But if your agency has built up a large property portfolio or holds significant investments, HMRC may challenge the trading status.
If you're running a recruitment agency, the same rules apply. As long as the bulk of your activity is placing candidates and invoicing clients, you're trading.
The 24-Month Rule
You must meet all the conditions above for the 24 months immediately before the date of sale. If you sell on 1st June 2026, you need to have been a director, holding 5% of shares, in a trading company since 1st June 2024.
This is where planning matters. If you're thinking about selling in 12 months and you're not currently meeting the conditions, you have a problem. You need to fix it now.
What Counts as a Disposal?
BADR applies to the disposal of shares in your agency. A disposal includes a sale, a gift, or a transfer into a trust. It also includes a liquidation where the company is wound up and assets distributed to shareholders.
For most agency founders, the disposal is a straightforward sale of shares to a buyer. That buyer could be a competitor, a private equity firm, a management buyout team, or an individual.
BADR also applies if you sell your agency's assets as a going concern if you're a sole trader or partnership. But most agency founders operate through a limited company, so we'll focus on share disposals.
The £1m Lifetime Limit
BADR applies to the first £1m of qualifying gains you make in your lifetime. It's not per business. If you sell one agency for a £600k gain and later sell another for a £500k gain, the first £1 million is covered at 14%. The remaining £100k is taxed at 20%.
If you've already used BADR on a previous business sale, you have less capacity available. Check your previous filings. If you claimed Entrepreneurs' Relief on a sale in 2015, that counts towards the £1m lifetime limit.
Common Pitfalls for Agency Founders
I've seen agency founders lose BADR because of simple mistakes. Here are the most common ones.
Dilution Below 5% Before Sale
You bring in a co-founder and give them 30% of the shares. Later you take on a non-executive director who gets 3%. Then you issue options to key staff. Before you know it, your holding drops to 4.8%. You don't qualify.
If you're planning a sale, check your shareholding percentage early. If you're close to the 5% boundary, consider restructuring before you start the sale process.
Stepping Back Too Early
You want to retire and hand the reins to your management team. You resign as director and stop working. Eighteen months later, you sell. You don't qualify because you weren't a director or employee in the 24 months before sale.
If you want to step back, stay on as a non-executive director with a formal appointment and a salary. That keeps the condition satisfied.
The Company Has Too Much Cash or Investments
Your agency has been profitable for years. You've built up £500k in the bank. You also own a property that you rent out to a separate company. HMRC looks at the balance sheet and says the company has significant investment activities.
If the non-trading assets exceed 20% of the company's total assets, you risk losing trading status. Distribute excess cash as dividends before sale. Sell the investment property. Clean up the balance sheet.
Share Options and EMI
If you've given Enterprise Management Incentive (EMI) options to staff, those options can qualify for BADR too. But the conditions are slightly different. The employee must exercise the option and hold the shares for 2 years before sale, or meet other conditions.
If you're planning a sale and have EMI options in place, talk to your accountant about the timing. You may need to accelerate option exercises.
How to Claim BADR
You claim BADR on your Self Assessment tax return. The form asks you to report the gain and state that you're claiming the relief. You need to provide details of the company, your shareholding, and the dates you held the shares.
The claim is made in the tax year of the sale. If you sell in January 2026, you report it on your 2025/26 tax return, due by 31st January 2027.
You also need to pay the CGT within 60 days of completing the sale. This is a hard deadline. If you complete on 15th March, you must report and pay by 14th May. Missing this deadline means interest and penalties.
Your accountant will handle the reporting and payment. But you need to give them the sale documents and shareholding records promptly.
Planning Your Exit for BADR
If you're thinking about selling your agency in the next 3 to 5 years, start planning now. Here's a practical checklist.
Check your shareholding. Are you above 5%? If not, can you buy back shares from other shareholders or issue new shares to yourself?
Check your director status. Are you formally appointed at Companies House? Are you on payroll? If not, fix it.
Clean up the balance sheet. Distribute excess cash as dividends. Sell investment assets that aren't part of the trading business. Keep non-trading assets below 20% of total assets.
Review your shareholder agreements. Do they restrict your ability to sell? Do they give other shareholders rights that could complicate a sale?
Talk to your accountant. As ICAEW qualified accountants, we work with agency founders on exit planning regularly. We can model the tax position under different scenarios and help you structure the sale to maximise BADR.
What If You Don't Qualify for BADR?
Not every agency founder qualifies. If you hold less than 5% of shares, or you haven't been a director for 2 years, or the company has too many investments, BADR isn't available.
In that case, you pay 20% CGT on the gain. But there are other planning options. You could sell shares gradually over multiple tax years to use your annual CGT allowance (£3,000 for 2025/26). You could transfer shares to a spouse to use their allowance. You could structure the sale as an earn-out to spread the gain across multiple tax years.
None of these are as valuable as BADR. But they can reduce the tax bill if BADR isn't available.
Final Thoughts
BADR is the most important tax relief for agency founders planning to sell. It cuts your tax rate in half on the first £1m of gains. But you must meet the conditions for 24 months before sale, and those conditions are easy to break by accident.
If you're thinking about selling your agency, check your position now. If you're not currently qualifying, you have time to fix it. If you leave it until the sale is underway, it's probably too late.
Talk to your accountant about BADR before you start the sale process. If you don't have an accountant who specialises in agency exits, get in touch with us. We work with agency founders across the UK and UAE, and we know exactly what HMRC looks for.