Deferred Consideration and Loan Notes: When Your Sale Proceeds Are Paid Over Time

The 30-Second Definition

Deferred Consideration is any portion of the purchase price in a business sale that is not paid in cash on completion day, but is instead paid at one or more future dates subject to agreed conditions or a fixed schedule. A Loan Note is the most common legal instrument used to document and govern that deferred payment — it is, in effect, a formal IOU from the buyer to the seller, carrying a specified repayment date, an interest rate, and defined security arrangements. Understanding the distinction between these two concepts — and the risks embedded in each — is essential for any founder entering a transaction where less than 100 percent of the consideration is paid upfront.

Deferred Consideration vs. Earn-Out: An Important Distinction

Deferred Consideration and Earn-Outs are related but distinct concepts that are frequently conflated. An Earn-Out is a specific type of deferred payment that is contingent on the business achieving defined financial or operational milestones post-completion. The seller receives the deferred amount only if performance targets are met.

Deferred Consideration, in its pure form, is a fixed payment obligation that is not contingent on performance. The buyer owes the seller a defined sum on a defined date, regardless of how the business performs after completion. The only conditions attached are typically the absence of a successful warranty claim by the buyer — meaning the deferred amount can be withheld or set off against any post-completion claim under the SPA.

This distinction matters enormously in practice. A seller who agrees to £2M of deferred consideration on fixed payment terms has a contractual debt owed to them. A seller who agrees to £2M of earn-out consideration has a contingent entitlement that depends entirely on outcomes they may no longer control. Both involve waiting for money. Only one involves genuine commercial risk of non-receipt.

How Loan Notes Work in Practice

When deferred consideration is documented as a Loan Note, the seller becomes a creditor of the acquiring entity. The Loan Note sets out the principal amount, the repayment date (or schedule of repayment tranches), the interest rate applicable to the outstanding balance, and the events of default that would trigger early repayment or enforcement rights.

In UK mid-market transactions, Loan Notes typically carry interest at a rate between 5 and 8 percent per annum, reflecting the seller's opportunity cost of not receiving the full cash consideration at completion. The interest may be paid periodically or rolled up and paid with the principal at maturity.

The critical issue that most founders overlook is that a Loan Note is only as secure as the entity issuing it. If the buyer is a newly incorporated acquisition vehicle — a Special Purpose Vehicle (SPV) established specifically for the transaction — the Loan Note may be backed by nothing more than the shares of the business you have just sold. If the acquired business deteriorates post-completion, the SPV's only asset declines in value, and the Loan Note may become impossible to enforce in full.

Security Arrangements: Protecting Your Deferred Proceeds

The single most important negotiation for a seller accepting Loan Note consideration is the security package attached to the note. Without security, the seller is an unsecured creditor — sitting behind the bank, HMRC, and any trade creditors in the event of the buyer's insolvency.

The security instruments a seller should seek include a fixed or floating charge over the assets of the acquired business (converting the seller into a secured creditor), a parent company guarantee from the buyer's ultimate holding entity or individual guarantors if the buyer is a PE-backed vehicle, and a charge over the shares of the acquiring entity to allow enforcement in the event of default.

Buyers resist robust security arrangements because they restrict their operational flexibility and their ability to raise further debt against the business post-completion. The negotiating dynamic is therefore clear: the higher the proportion of Loan Note consideration relative to the total deal value, the stronger the seller's justification for demanding a comprehensive security package.

The Tax Treatment: A Significant Advantage of Loan Notes

One of the primary reasons sellers accept Loan Note consideration — beyond accommodating a buyer who cannot raise the full cash consideration at completion — is the tax treatment. Under current HMRC rules, a qualifying Loan Note (structured as a Qualifying Corporate Bond) allows the seller to defer the Capital Gains Tax liability on the deferred portion until the note is actually redeemed. This is known as the Holdover Relief mechanism.

The practical consequence is significant. A seller who receives £5M in cash and £2M in Loan Notes on completion day pays CGT on the £5M immediately. The CGT on the £2M is deferred until the note is redeemed — potentially in a different tax year, potentially under a different rate regime, and potentially in a year when other reliefs or allowances are available to offset the liability.

This deferral benefit must be weighed against the credit risk of the note itself. A Loan Note that defers tax is only advantageous if the note is ultimately repaid in full. A seller who accepts an unsecured Loan Note to benefit from tax deferral and then finds the note is unenforceable has deferred both their tax liability and their proceeds — neither of which is a desirable outcome.

How Buyers Use Deferred Consideration Structurally

Buyers propose deferred consideration for two reasons, and sellers should be clear about which one is driving the structure in their specific transaction.

The first is genuine financing need — the buyer cannot raise sufficient debt or equity to fund 100 percent cash consideration at completion, and the seller is effectively co-financing the acquisition. This is common in management buyouts and in transactions where the buyer is a smaller trade acquirer rather than a PE fund.

The second is risk mitigation — the buyer is confident they can fund the full consideration but wishes to retain a portion of the purchase price as protection against post-completion warranty claims, revenue shortfalls, or integration risks. In this case, the deferred consideration functions as a de facto escrow without the formal protections that a third-party escrow account would provide.

Understanding which motivation is at play determines the seller's negotiating position. A buyer with a genuine financing constraint has limited flexibility on the deferred amount but may have flexibility on security and interest terms. A buyer using deferral as a risk management tool should be pushed for third-party escrow instead — or at minimum for a robust security package and a short repayment horizon that limits the period of the seller's exposure.