Connor Willoughby
Finance education / Private capital

Convertible Loan Note

A complete plain English guide to a loan that may later become shares in a company.

Overview

What it means

A Convertible Loan Note is a legal agreement between a company and an investor. The investor gives money to the company. At first, that money is treated as debt.

The agreement may later allow the debt to convert into shares. Conversion normally happens after a future funding round, at maturity, when the company is sold or when another event written into the agreement occurs.

Companies often use CLNs when they need funding but are not yet ready to agree a full valuation. Every CLN is different, so the signed document is always more important than a general explanation.

Simple example

Alex lends £10,000 to a startup through a Convertible Loan Note. One year later, the startup raises a larger funding round. The note converts according to its agreed formula, and Alex receives shares instead of receiving the £10,000 back in cash.

Typical process

How it usually works

01

Terms agreed

The company and investor agree the amount, interest, maturity date, conversion rules and investor rights.

02

Money provided

The investor transfers the agreed amount and the company records the debt.

03

Business develops

The company uses the money for its agreed business purposes while the note remains outstanding.

04

Trigger occurs

A funding round, sale, maturity date or another event activates the note's rules.

05

Outcome calculated

The note converts into shares, becomes repayable or follows another outcome allowed by the agreement.

Searchable FAQ

Questions people ask

Search more than 100 questions covering the basics, money, conversion, shares, valuation, risk, regulation, tax and practical examples.

152 questions available
What is a Convertible Loan Note?
Basics

A Convertible Loan Note, often shortened to CLN, is a written agreement where an investor lends money to a company. The agreement allows that debt to become shares later if a stated event happens.

What does convertible mean?
Basics

Convertible means that something can change into something else. Here, money owed as a loan may change into shares in the company.

What is a loan note?
Basics

A loan note is a formal document recording money owed by a company and the rules for repayment, interest and possible conversion.

Why is it called a note?
Basics

In finance, a note is a formal written promise about money. It is not the same as an informal handwritten reminder.

Is a Convertible Loan Note a loan?
Basics

It begins as a loan because the company owes money to the investor. It may later stop being a loan if it converts into shares.

Is a Convertible Loan Note an investment?
Basics

Yes. The investor is putting money at risk in the hope of receiving repayment, interest, shares or another agreed benefit.

Is it the same as buying shares?
Basics

No. Buying shares usually makes the investor a shareholder immediately. A CLN investor normally starts as a lender.

Is it the same as a bank loan?
Basics

No. A bank loan is usually designed to be repaid in cash. A CLN may instead convert into ownership shares.

Why do companies use CLNs?
Basics

They can help a company raise money before a full company valuation and share price have been agreed.

Why do startups use them?
Basics

Young companies often need money quickly but may not yet have enough information to agree a fair valuation.

Can a large company issue one?
Basics

Yes. Convertible debt can be used by larger companies too, although the structure may be more complex.

Are all CLNs the same?
Basics

No. Each agreement can have different interest, conversion, repayment, security, maturity and voting terms.

Who provides the money?
People

The investor provides the money. The investor may be an individual, a company, a fund or another organisation.

Who receives the money?
People

The company named in the agreement receives the money and becomes responsible for following the terms.

Who signs the agreement?
People

Usually an authorised person signs for the company and the investor also signs. The exact signing rules depend on the document.

Can a child invest through a CLN?
People

A child usually cannot enter complex investment contracts alone. A parent, guardian, trust or specialist arrangement may be required.

Can founders invest through a CLN?
People

Yes, founders may sometimes lend money to their own company through a properly documented arrangement.

Can employees invest through a CLN?
People

Possibly, but the company should consider employment, securities, tax and financial promotion rules.

Can several investors use the same CLN round?
People

Yes. A company may issue notes to several investors, either under one instrument or separate agreements.

Do all investors receive identical terms?
People

Not always. Different investors may negotiate different rights, although this can create practical and fairness issues.

Who writes the CLN?
People

A solicitor commonly drafts or reviews it. Templates exist, but using one without proper advice can create serious problems.

Do existing shareholders need to agree?
People

Sometimes. Approval may be required under the articles of association, a shareholders' agreement, previous investment documents or company law.

What is the principal?
Money

The principal is the original amount lent to the company.

What is interest?
Money

Interest is an additional amount that may build up while the debt remains outstanding.

Does every CLN include interest?
Money

No. Some notes have interest and others do not.

How is interest calculated?
Money

It may be calculated as a percentage of the principal for each year or another period stated in the agreement.

Is the interest paid in cash?
Money

It may be paid in cash, added to the debt or converted into shares. The agreement should say which applies.

Can interest become shares too?
Money

Yes. Some CLNs allow accrued interest to convert alongside the principal.

Can the company repay early?
Money

Only if the agreement allows early repayment or the investor agrees to it.

Can the investor demand early repayment?
Money

Usually only when the agreement gives that right, such as after a default or another specified event.

What currency can be used?
Money

The parties can agree a currency such as pounds, euros or dollars, but currency risk and payment rules should be considered.

What happens if exchange rates change?
Money

The real value of repayment or conversion may rise or fall when the investor and company use different currencies.

Can the company spend the money however it wants?
Money

The agreement may allow general business use or restrict the money to specific purposes.

What happens if the company spends all the money?
Money

The debt still exists unless it converts, is repaid, written off or otherwise dealt with under the agreement.

What is conversion?
Conversion

Conversion is the process of changing the debt into shares.

When can conversion happen?
Conversion

It can happen when a stated event occurs, such as a funding round, sale, maturity date or investor decision.

What is a conversion event?
Conversion

It is an event written into the agreement that activates the conversion rules.

What is a qualifying funding round?
Conversion

It is a future share investment round that meets conditions such as a minimum amount raised.

Why must the funding round be qualifying?
Conversion

The minimum conditions prevent a very small or artificial funding round from automatically triggering conversion.

Does conversion happen automatically?
Conversion

Sometimes. Other notes require the investor or company to choose. The document should make this clear.

Can only part of the loan convert?
Conversion

Yes, if the agreement allows partial conversion.

Can the investor refuse conversion?
Conversion

That depends on whether conversion is automatic or optional under the agreement.

Can the company force conversion?
Conversion

Only if the agreement gives the company that right and the required conditions are met.

What happens to the debt after conversion?
Conversion

The converted amount normally stops being owed as debt because it has been exchanged for shares.

Does the investor receive a share certificate?
Conversion

The investor may receive a share certificate or electronic ownership record, depending on how the company records shares.

Does Companies House record every shareholder?
Conversion

Companies House records certain company information, but the company's own register of members is the key legal record of shareholders.

What is a company valuation?
Valuation

A valuation is an estimate or agreed figure for what the whole company is worth for a particular transaction.

Why does valuation matter?
Valuation

It helps determine the price per share and how much ownership the investor receives.

What is a valuation cap?
Valuation

A valuation cap is a maximum valuation used in the conversion calculation.

Does a valuation cap prove the company is worth that amount?
Valuation

No. It is a contractual calculation tool, not proof of market value.

Why does an investor want a valuation cap?
Valuation

It can protect an early investor from receiving too few shares if the company's later valuation becomes very high.

Can a CLN have no valuation cap?
Valuation

Yes. Some notes use only a discount or another pricing method.

What is a pre-money valuation?
Valuation

It is the agreed value of the company immediately before new investment is added.

What is a post-money valuation?
Valuation

It is generally the company value after including the new investment, although definitions can vary by document.

What is the conversion price?
Valuation

It is the price per share used when the debt changes into shares.

Who calculates the conversion price?
Valuation

The calculation usually follows a formula in the agreement and may be checked by the company, lawyers, accountants and investors.

Can people disagree about the calculation?
Valuation

Yes. Clear definitions, worked examples and dispute procedures can reduce this risk.

What happens when both a cap and discount apply?
Valuation

The document normally states which calculation gives the investor the better price or how the two interact.

What is a conversion discount?
Discounts

It is a reduction from the share price paid by new investors in a later round.

Why does an early investor receive a discount?
Discounts

The discount can reward the investor for taking risk earlier.

What does a 20 percent discount mean?
Discounts

If new investors pay £1 per share, a simple 20 percent discount could give the note investor a conversion price of 80 pence per share.

Does every CLN include a discount?
Discounts

No. Some use a valuation cap, a fixed price or another formula.

Can the discount change over time?
Discounts

Yes, if the agreement creates different discounts for different dates or events.

Can a discount be too generous?
Discounts

Yes. A very large discount may cause significant dilution for founders and existing shareholders.

Is the discount paid in cash?
Discounts

No. It normally changes the share price used for conversion.

Can an investor receive both interest and a discount?
Discounts

Yes, if both are included in the agreement.

Is a discount guaranteed to make money?
Discounts

No. The company may fail or the shares may become worth less than the conversion price.

Can there be no discount and no cap?
Discounts

Yes, but the agreement must still explain how the conversion price will be calculated.

What type of shares does the investor receive?
Shares

The agreement may provide ordinary shares, preference shares or the same class issued in a future funding round.

What are ordinary shares?
Shares

Ordinary shares are a common form of company ownership, often carrying voting and economic rights.

What are preference shares?
Shares

Preference shares may have special rights, such as priority for certain payments.

Does the investor get voting rights?
Shares

Only if the shares issued on conversion carry voting rights.

Does the investor receive dividends?
Shares

The investor may receive dividends after conversion if the company declares them and the share class is entitled to them.

Can the investor sell the shares?
Shares

Possibly, but private company shares are often difficult to sell and transfers may be restricted.

What is a share class?
Shares

A share class is a group of shares carrying a particular set of rights.

Can the investor choose the share class?
Shares

Usually the agreement determines the class or links it to a future funding round.

Can the shares be worth nothing?
Shares

Yes. If the company fails or performs badly, the shares may have little or no value.

Does conversion guarantee a profit?
Shares

No. Conversion creates ownership, not a guaranteed return.

What is dilution?
Shares

Dilution happens when new shares reduce an existing shareholder's percentage ownership.

Does conversion dilute existing shareholders?
Shares

Usually yes, because new shares are issued to the note investor.

What is the maturity date?
Timing

It is the date when the note reaches the end of its agreed term.

What happens at maturity?
Timing

The note may convert, become repayable, continue by agreement or follow another outcome stated in the document.

Can the maturity date be extended?
Timing

Yes, if the required parties agree and any necessary approvals are obtained.

How long does a CLN usually last?
Timing

There is no single standard period. It may last months or several years.

Can conversion happen before maturity?
Timing

Yes. A qualifying funding round or another event may trigger earlier conversion.

What happens if nothing occurs before maturity?
Timing

The maturity provisions decide whether the debt converts, is repaid or is renegotiated.

Can interest continue after maturity?
Timing

Possibly, especially if the agreement says default or continuing interest applies.

Can different investors have different maturity dates?
Timing

Yes, although managing different dates can make administration more difficult.

Can the investor lose all the money?
Risk

Yes. Startup and private company investments can result in a total loss.

What happens if the company fails?
Risk

The investor may claim as a creditor, but there may not be enough money or assets to repay everyone.

Is the investment protected by the FSCS?
Risk

Many private company investments are not protected against investment loss by the Financial Services Compensation Scheme. Investors should check the exact arrangement.

Is a CLN safer than shares?
Risk

Not automatically. Debt may rank ahead of shares, but a failing company may still have nothing available for repayment.

Can the company become unable to pay?
Risk

Yes. A company can run out of cash even when it owns valuable ideas or assets.

What is default?
Risk

Default is a serious failure to follow the agreement, such as not paying an amount when due.

What is an event of default?
Risk

It is a listed event that may give the investor extra rights, such as demanding repayment.

What is insolvency?
Risk

Insolvency generally means a company cannot pay its debts or its liabilities exceed its assets under the relevant legal test.

What is ranking?
Risk

Ranking describes the order in which different creditors and investors may be paid.

What is secured debt?
Risk

Secured debt is supported by legal rights over particular assets.

Is every CLN secured?
Risk

No. Many startup CLNs are unsecured.

What is unsecured debt?
Risk

It is debt without specific assets pledged as security, which can increase the risk of non-payment.

Can founders lose control after conversion?
Risk

Possibly. Conversion and later investment can change voting percentages and governance rights.

Can a company issue too many CLNs?
Risk

Yes. Large amounts of convertible debt can create heavy dilution or repayment pressure.

What is concentration risk?
Risk

It is the risk of placing too much money into one company or one type of investment.

Is a CLN a legal contract?
Legal and administration

Yes. It creates legal rights and obligations between the parties.

Does a CLN need a solicitor?
Legal and administration

It is sensible to obtain qualified legal advice because small drafting differences can have large financial effects.

Can someone download a template and use it?
Legal and administration

They can find templates, but a generic document may not match the company, investment or law involved.

Does the board need to approve it?
Legal and administration

Usually the directors should properly consider and approve the transaction, subject to the company's documents and law.

Do shareholders need to approve new shares?
Legal and administration

Approval may be required depending on directors' authority, pre-emption rights, articles and shareholder agreements.

What are pre-emption rights?
Legal and administration

They can give existing shareholders the first opportunity to buy new shares before they are offered to others.

What is the register of members?
Legal and administration

It is the company's official legal record of its shareholders.

What is a cap table?
Legal and administration

A capitalisation table shows who owns shares, options or other rights to ownership.

Should a CLN appear on the cap table?
Legal and administration

It is often shown separately as a potential future ownership interest so people can understand possible dilution.

Can the CLN terms be changed?
Legal and administration

Yes, if the agreement permits changes and the required parties consent.

What is a deed?
Legal and administration

A deed is a formal legal document with special signing requirements. Some investment documents may be executed as deeds.

What records should the company keep?
Legal and administration

The company should keep the signed agreement, approvals, payment records, calculations, notices and updated company registers.

Can a CLN be transferred to someone else?
Legal and administration

Only if the agreement permits assignment or transfer and any required consent is obtained.

What law governs the agreement?
Legal and administration

The agreement normally identifies a governing law, such as the law of England and Wales.

What happens when there is a dispute?
Legal and administration

The document may require negotiation, court proceedings, arbitration or another dispute process.

Can a company advertise a CLN to the public?
Regulation and promotion

Investment promotions can be restricted. A company should obtain advice before communicating an invitation or inducement to invest.

What is a financial promotion?
Regulation and promotion

It is broadly a communication that invites or encourages someone to take part in investment activity.

Does the FCA regulate every CLN?
Regulation and promotion

Not every private agreement is directly supervised in the same way, but regulated activities and financial promotion rules may still apply.

Can social media posts count as financial promotions?
Regulation and promotion

Yes. A post, video, website or direct message may be a financial promotion depending on its content and context.

Can someone promise guaranteed returns?
Regulation and promotion

A company should not describe a risky investment as guaranteed unless a genuine and legally effective guarantee exists.

What does high risk investment mean?
Regulation and promotion

It generally refers to investments where people may lose all their money and where selling the investment may be difficult.

Why are risk warnings important?
Regulation and promotion

They help readers understand that the investment can fail and that returns are not guaranteed.

Can overseas investors participate?
Regulation and promotion

Possibly, but the laws of their country and the company's country may both need to be considered.

Is CLN interest taxable?
Tax and accounting

Interest can have tax consequences for the investor and the company. The result depends on the parties and circumstances.

Does conversion create tax?
Tax and accounting

It may. Conversion can have tax and accounting effects, so professional advice may be needed.

How does the company record the money?
Tax and accounting

Accounting treatment depends on the terms. The instrument may contain debt and equity features.

Can a CLN qualify for SEIS or EIS?
Tax and accounting

Convertible instruments do not automatically qualify. The structure and timing must meet detailed requirements.

Should the investor get tax advice?
Tax and accounting

Yes, particularly when the amount is significant or more than one country is involved.

Does the company pay tax when it receives the loan?
Tax and accounting

Receiving loan principal is not normally treated in the same way as ordinary trading income, but the full tax position depends on the facts.

Can interest be deductible for the company?
Tax and accounting

Sometimes, but tax rules and restrictions can affect whether a deduction is available.

What documents help with tax reporting?
Tax and accounting

The signed note, payment evidence, interest calculations, conversion notices and share records can all be important.

What is the difference between a CLN and a SAFE?
Comparisons

A SAFE is usually a contractual right to future equity and often does not operate like traditional debt. A CLN begins as debt.

What is the difference between debt and equity?
Comparisons

Debt is money owed. Equity is ownership in a company.

What is the difference between a CLN and ordinary shares?
Comparisons

Ordinary shares create ownership immediately, while a CLN may create ownership later.

What is the difference between a CLN and preference shares?
Comparisons

A CLN is initially debt. Preference shares are ownership shares carrying special rights.

What is the difference between a CLN and crowdfunding?
Comparisons

Crowdfunding is a way of raising money from many people. A crowdfunding campaign may use shares, loans, rewards or other structures.

What is the difference between a CLN and a bond?
Comparisons

Both can be debt instruments, but bonds are often more standardised and may be issued to a broader market.

What is the difference between a CLN and an overdraft?
Comparisons

An overdraft allows borrowing through a bank account. A CLN is a specific investment contract that may convert into shares.

Is a CLN better than shares?
Comparisons

Neither is always better. The right choice depends on valuation, risk, rights, timing and the needs of both parties.

Can you give a simple example?
Practical examples

An investor lends £10,000 to a startup. A year later, the startup raises a qualifying funding round. The £10,000 and any convertible interest are exchanged for shares using the formula in the note.

Can you explain a discount example?
Practical examples

New investors pay £1 per share. A CLN investor has a 20 percent discount, so the simple discounted conversion price is 80 pence per share.

Can you explain a valuation cap example?
Practical examples

A later round values the company at £10 million, but the note has a £5 million cap. The conversion calculation may use the lower capped valuation, giving the note investor more shares.

What happens if the company is sold before conversion?
Practical examples

The note may convert, be repaid with a premium or follow another sale provision written into the agreement.

What happens if the company never raises another round?
Practical examples

The maturity rules become important. The note may become repayable, convert using a set formula or be extended.

What happens if the next funding round is very small?
Practical examples

It may not meet the definition of a qualifying funding round, so automatic conversion may not occur.

What happens if an investor invests £1,000?
Practical examples

The same principles apply as with a larger amount, but fees, legal costs and eligibility rules may make small investments less practical.

What should an investor read first?
Practical examples

The investor should read the entire note, risk warnings, company information, articles, shareholder documents and any investment memorandum.

What should a company explain clearly?
Practical examples

It should explain the risks, use of funds, conversion formula, maturity, interest, investor rights and possible dilution.

What are the five most important points to remember?
Practical examples

A CLN starts as debt. It may convert into shares. Every agreement is different. The investor can lose everything. Professional advice may be necessary.

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