How Much Does An M&A Lawyer Cost?

M&A lawyer cost depends on the size and shape of the deal, but for most small business sales, the legal work is driven by the same few stages: heads of terms, due diligence, the sale agreement, completion documents and post-completion filings.

As a rough UK guide, a straightforward small business asset sale might cost around £3,000 to £8,000 plus VAT in legal fees. A share sale or acquisition is often more involved and might sit around £6,000 to £20,000 plus VAT, with complex or heavily negotiated deals costing more. Smaller standalone tasks, such as reviewing heads of terms, may be a few hundred pounds to a few thousand pounds.

So the better question isn't just "how much will a lawyer cost?" It's "what legal work do I actually need for this deal, and what could make it more expensive?"

If you're selling the business you've spent years building, or buying a company that needs to keep running smoothly on day one, a clear legal process can save you from nasty surprises. The cost should feel proportionate to the risk, the deal value and the number of moving parts.

What Does An M&A Lawyer Do In A Small Business Sale?

An M&A lawyer helps you structure, check, negotiate and complete the legal side of buying or selling a business. For a small business sale, that usually means keeping the deal practical while protecting you from the issues that can come back later.

The work is different depending on whether you're buying or selling.

If You're Selling

Your lawyer will usually help you:

• Review or draft the heads of terms.
• Prepare legal documents for due diligence, such as key contracts, company records and employment documents.
• Negotiate the share purchase agreement or asset purchase agreement.
• Limit your warranties, indemnities and post-completion obligations.
• Prepare completion documents, such as board minutes, stock transfer forms and director resignation documents.
• Deal with practical handover points, such as customer contracts, supplier notices and employee information.

If You're Buying

Your lawyer will usually help you:

• Review the legal health of the business through legal due diligence before you commit.
• Raise due diligence questions about contracts, employees, IP, data protection, leases and company records.
• Draft or negotiate protections in the sale agreement.
• Check what must happen before completion.
• Prepare a completion checklist so ownership transfers properly.

For example, if you buy a cafe through an asset sale, the legal work may focus on the lease, equipment, staff, supplier contracts and trading name. If you buy the shares in the company that runs the cafe, you'll also inherit the company itself, including its past liabilities unless the contract says otherwise.

How Is M&A Lawyer Cost Usually Worked Out?

It depends on the pricing model, the scope and how predictable the deal is. Legal fees for a business acquisition or sale usually reflect the time and risk involved, not just the purchase price.

For UK SME transactions, indicative legal fee ranges might look like this:

• Heads of terms review: Around £300 to £1,000 plus VAT for a short review and comments, or £800 to £2,000 plus VAT to draft a more tailored document.
• Due diligence support: Around £1,500 to £5,000 plus VAT for focused buyer-side legal due diligence, depending on the number of contracts and issues. Seller-side preparation might be around £750 to £2,500 plus VAT.
• Asset purchase agreement: Around £2,000 to £6,000 plus VAT for a straightforward asset sale. If there are employees, a lease, deferred payments or detailed warranties, this can rise to £6,000 to £12,000 plus VAT or more.
• Share purchase agreement: Around £4,000 to £12,000 plus VAT for a typical small company share sale. More negotiated or higher-risk transactions can be £12,000 to £25,000 plus VAT or more.
• Completion support: Around £750 to £3,000 plus VAT if dealt with as a separate piece of work, although it's often included in a broader sale or acquisition package.

These figures are only practical market guides. The quote you receive should say whether VAT, Companies House fees, search fees, HMRC stamp duty and specialist tax, accounting or property advice are included.

You may see three broad pricing options in the UK market.

Free Templates

A free template can seem tempting for a very small deal, but it's rarely enough on its own. Templates often miss deal-specific issues like deferred payments, employee transfers, stock adjustments, lease consent, customer contract assignment and warranties that match the actual business.

Online Fixed-Fee Legal Support

An online legal services team may offer a fixed fee once they've reviewed the deal structure and what you need. This can suit SME transactions because you know the scope and cost before work begins.

Some providers can quote a fixed fee up front after understanding the transaction. The exact quote will depend on what needs to be reviewed, drafted and negotiated.

Traditional Hourly Billing

Some M&A lawyers and solicitors charge by the hour. This can make sense for more complex deals, especially where negotiations are uncertain, there are several parties, or specialist advice is needed.

The trade-off is that the final cost can move as the deal changes. If negotiations drag on, due diligence uncovers issues, or the agreement needs several rounds of changes, fees can increase.

What Stages Of The Deal Affect Legal Fees?

The main stages that affect legal fees are heads of terms, due diligence, the main sale agreement, completion documents and post-completion filings. Each stage can be simple or detailed depending on your deal.

1. Heads Of Terms

Heads of terms set out the commercial deal before the full agreement is prepared. They're often mostly non-binding, but parts like confidentiality, exclusivity and costs can be binding.

Getting this right early can keep the sale on track. A lawyer will usually check points such as:

• What is being sold: shares, assets or both.
• The price and how it's paid.
• Any deposit, deferred payment or earn-out.
• Conditions before completion, such as landlord consent or finance approval.
• Who pays costs if the deal falls over.
• Whether the seller can speak to other buyers during an exclusivity period.

2. Due Diligence

Due diligence is where the buyer checks what they're actually buying. More due diligence usually means more legal review.

For SME deals, the legal review often covers:

• Companies House records and statutory registers under the Companies Act 2006.
• Customer and supplier contracts.
• Employment contracts, policies and staff liabilities under the Employment Rights Act 1996.
• Intellectual property ownership, including trade marks registered with the UK IPO.
• UK GDPR and Data Protection Act 2018 compliance.
• Commercial leases, landlord consent and assignment restrictions.
• Licences, permits and sector-specific approvals.

3. Sale Agreement And Negotiation

The main agreement is usually the biggest legal workstream. For a share sale, this is commonly a share purchase agreement. For an asset sale, it's usually an asset purchase agreement.

This document deals with price, completion mechanics, warranties, indemnities, limitations of liability and what happens if something goes wrong.

4. Completion And Post-Completion

Completion documents can include board minutes, shareholder approvals, stock transfer forms, director appointments or resignations, Companies House filings and updated registers.

For a UK share sale, stamp duty may apply at 0.5% of the consideration for shares, usually rounded up to the nearest £5, where the transfer is over £1,000. HMRC stamping rules and timing should be checked for your transaction. Companies House filings may also be needed for changes to directors, PSCs or company details.

What Makes A Small Business Sale Lawyer Cost More?

A small business sale lawyer will usually cost more when the deal has more documents, more risk or more negotiation. Even a modest sale price can involve detailed legal work if the business has complicated arrangements.

Common cost drivers include:

• Share sale instead of asset sale: A share sale often needs deeper due diligence because the buyer takes on the company with its history.
• Deferred payments or earn-outs: If part of the price is paid later, the agreement needs clear triggers, evidence and enforcement rights.
• Property or lease issues: Landlord consent, assignment terms and rent liabilities can take time to resolve.
• Employees: Staff transfer issues, accrued holiday, bonuses, redundancy risk and consultation obligations can add complexity. ACAS guidance may also be relevant where workplace changes are planned.
• Intellectual property: If the brand, software, website content, goodwill or licences are central to the value, ownership needs to be checked properly.
• Data-heavy businesses: Customer databases, marketing lists and software platforms can raise UK GDPR issues.
• Regulated activities: Sector licences or approvals can affect timing and conditions.
• Disputes or debts: Existing claims, unpaid suppliers or tax liabilities can lead to indemnities and special conditions.

Say Mike runs a cleaning business and agrees to sell the shares in his company for £180,000. The buyer will want to check customer contracts, staff contracts, equipment finance, insurance claims, PAYE records and whether the company owns its trading name. If the buyer then asks for a £40,000 deferred payment over 12 months, the legal work increases because the agreement needs to explain when payment is due, what happens if Mike helps with handover, and what happens if the buyer misses a payment.

On a deal like that, seller-side legal fees might be around £7,000 to £14,000 plus VAT, depending on how much due diligence support and negotiation is needed. If the buyer's lawyer raises extensive questions or asks for several indemnities, the cost can sit at the higher end.

That extra drafting isn't paperwork for the sake of it. It's the difference between a clear payment obligation and an argument later.

What Should Be Included In Business Acquisition Legal Fees?

Business acquisition legal fees should clearly say what work is included, what assumptions the quote is based on and what would count as extra work. If you're comparing quotes, ask for the scope in plain English before you agree.

A good scope for an SME deal might cover:

• Initial call to understand the transaction structure.
• Review or drafting of heads of terms.
• Due diligence request list or review of due diligence responses.
• Drafting or reviewing the share purchase agreement or asset purchase agreement.
• Negotiation support for a set number of rounds.
• Completion documents, such as board minutes, stock transfer forms and written resolutions.
• Basic Companies House filing guidance where relevant.
• Post-completion checklist for handover steps.

You should also ask what isn't included. Common exclusions include tax advice, accounting advice, property conveyancing, court disputes, specialist regulatory advice and large volumes of contract review.

For example, if you're selling a small dog grooming business for £75,000 by asset sale, a simple fee breakdown might be £600 plus VAT to review heads of terms, £3,500 plus VAT for the asset purchase agreement and £1,000 plus VAT for completion support. That would put the legal cost at around £5,100 plus VAT, before any third-party costs. If a lease assignment, employee transfer questions or a deferred payment is added, the quote may increase.

Heads Of Terms Outline

If you're at the early stage, a heads of agreement can help everyone agree the deal shape before legal costs build up. A lawyer should tailor it before you use it, but the outline usually looks like this:

1. Parties: Write the full legal names of the buyer, seller and target company or business.
2. Transaction Type: State whether it's a share sale, asset sale or another structure.
3. Assets Or Shares Included: List what is being sold and what is excluded.
4. Price And Payment: Set out the price, deposit, completion payment, deferred payment or earn-out.
5. Conditions: Add anything that must happen before completion, such as finance, landlord consent or due diligence.
6. Due Diligence: Explain what information the buyer can review and by when.
7. Confidentiality: Protect sensitive business, customer and staff information.
8. Exclusivity: Say whether the seller must stop negotiating with other buyers, and for how long.
9. Completion Date: Add the target date and what must be delivered at completion.
10. Legal Status: State which clauses are binding and which are not.

How Can You Keep Sell My Business Solicitor Cost Under Control?

You can keep costs under control by getting organised early, agreeing the deal structure clearly and avoiding vague commercial terms. The smoother the information flow, the less time your legal team spends chasing basics.

Before you ask for a quote, pull together:

• Your Companies House number and latest company records.
• A summary of what you're selling and what you want to keep.
• Key customer and supplier contracts.
• Employment contracts, staff list, pay details and holiday liabilities.
• Lease documents, licences and equipment finance agreements.
• IP records, including trade mark registrations and domain ownership.
• Privacy documents, data processing agreements and marketing consent records.
• Any disputes, unpaid debts or unusual liabilities.

Then, ask your legal provider these questions:

• Is this quote fixed fee or hourly?
• What documents are included?
• How many negotiation rounds are included?
• What work would be outside scope?
• Who will manage completion?
• Do I need separate tax, accounting or lease advice?

Keep your commercial terms realistic. If you agree the headline price but leave key points open, such as stock value, debtors, deposits, handover support or restraint periods, those points will still need to be negotiated later.

You should also build in time for Companies House requirements. Compulsory identity verification now applies in stages for directors, people with significant control and certain filings. If your deal involves director changes, PSC updates or new appointments, factor this into your completion timetable.

Key Takeaways

• As a practical UK guide, a straightforward small business asset sale might cost around £3,000 to £8,000 plus VAT, while a share sale might cost around £6,000 to £20,000 plus VAT or more.
• Standalone work can vary too: heads of terms may be a few hundred pounds, while due diligence, sale agreements and completion support usually cost more.
• The main legal stages are heads of terms, due diligence, the sale agreement, completion documents and post-completion filings.
• Share sales, deferred payments, leases, employees, IP, data protection and sector licences can all increase the work required.
• Ask for a clear scope before you start, including what's included, what's excluded and what could change the price.
• Getting your documents organised early is one of the simplest ways to keep the transaction moving and manage legal costs.

If you'd like help with heads of terms, due diligence, sale agreements or completion documents, you can reach us at 08081347754 or team@sprintlaw.co.uk for a free, no-obligations chat.