Sweat equity is a stake in a company given in return for work instead of cash. A co-founder, developer, marketer or adviser helps build the business and is paid, in whole or in part, with shares or with the right to buy shares later. It’s how a lot of businesses get built before there’s the money to pay salaries.
Shares given away for work are hard to get back, and every share given away is a share of whatever the business becomes. That’s why a sweat equity deal needs a clear job, an agreed way to value it and vesting, so the shares are earned over time and not handed over in full on day one.
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What Sweat Equity Means
Sweat equity covers any arrangement where someone receives ownership in exchange for their time and skills. Things like:
- a co-founder who works full time without a salary while the business gets going
- a developer who builds the first version of the product for a stake instead of a day rate
- a sales or marketing lead who takes a lower salary plus shares
- an adviser or non-executive director who takes a small stake for their time and contacts
The stake comes in one of two forms. Sweat equity shares are issued now, and the person becomes a shareholder straight away, with votes and a right to dividends. Options give the person the right to buy shares later at a price set today. Both count as equity for work, but they’re taxed differently and give different rights, so the choice between them shapes the rest of the deal.
In the UK, a private company doesn’t have to issue shares for cash. The Companies Act lets shares be paid up in money or money’s worth, including know-how, so work done for the company can count as payment for its shares.
How to Put a Value on Work
Valuing sweat equity takes two numbers: what the work would cost if the company paid cash for it, and what the company is worth.
The first is the market rate for the job. A developer who would normally charge £600 a day and spends 100 days building the product is putting in £60,000 of work. For a co-founder working without a salary, it’s the salary the company would have to pay someone else to do the role, less anything the co-founder actually takes.
The second is the valuation. If the company has raised money recently, there’s a pre-money valuation to work from. If it hasn’t, the founders and the person joining have to agree one, using the same methods investors use for startup valuation.
| Step | Figure |
|---|---|
| Market rate for the work | £600 a day |
| Days of work | 100 |
| Value of the work | £60,000 |
| Pre-money valuation | £1.5m |
| Value once the new shares are issued | £1.56m |
| Stake for the work (£60,000 ÷ £1.56m) | 3.8% |
The same £60,000 of work is a bigger percentage when the valuation is lower. At a £500,000 pre-money valuation it comes to 10.7%, which is why the timing of a sweat equity deal matters as much as the amount of work.
The person taking shares is also taking a risk a paid contractor doesn’t take, because the shares could end up worth nothing. That can justify a bigger stake than the cash figure on its own. A part-cash, part-shares deal is one way to close the gap, with the shares covering the part of the rate the company can’t pay yet.
Founder Equity Splits
Co-founders are usually paid for their early work almost entirely in shares, so the founder equity split is a sweat equity decision too. An equal split is simple and works when the founders are putting in similar time, money and skills. When they aren’t, the things founders weigh up include:
- time, meaning full time or part time, and starting when
- cash each founder puts into the company
- skills the business would otherwise have to hire, and what that would cost
- what each person will be responsible for from now on
- the idea and any work done before the others joined
An equal split between 2 founders also means neither can outvote the other. Whether that causes a problem depends on whether the articles of association and the shareholders’ agreement say what happens when the founders disagree.
Whatever the split, it goes on the cap table with every share and option, so anyone can see who owns what at any date.
UK Tax on Shares for Services
HMRC treats shares given to someone because of their job as employment-related securities, and directors count as employees for this purpose. If the shares are worth more than the amount paid for them, the difference is taxed as employment income under HMRC’s money’s worth rules. That applies even though no cash has changed hands and the shares can’t easily be sold.
Timing decides how big the bill is. When a company is set up, its shares are worth little more than their nominal value, so founders who pay nominal value for them usually have little or nothing to be taxed on. Once the company has raised money at a valuation, or has customers and revenue, the same shares are worth much more, and anyone who receives them for nominal value is taxed on the gap.
Say a developer joins after the company has raised at a £2m post-money valuation and is issued 4% of the shares, paying their nominal value of £40. A small holding carries no control, so for tax the shares might be valued at £50,000, below the £80,000 a straight 4% of £2m would suggest. A higher-rate taxpayer would owe income tax of 40% on the £49,960 difference, which is just under £20,000, with no cash from the shares to pay it.
If the shares count as readily convertible assets, which can happen when there’s a market or an arrangement for selling them, the company has to collect the tax through PAYE and National Insurance is due as well. Someone who isn’t an employee or director, such as a freelance developer, is usually taxed on the value as income of their business instead.
The company has its own job too. It has to register an employment-related securities scheme with HMRC and file a return by 6 July after the end of each tax year in which shares are given to directors or employees.
Shares that come with leaver provisions are restricted securities, which can bring a further income tax charge when the restrictions lift. A section 431 election, signed within 14 days of the shares being issued, deals with that, and it’s covered in more detail in founder vesting schedules.
Structuring Sweat Equity Deals
Vesting ties the shares to the work. The person receives their stake over an agreed period, often with a cliff at the start, and if they leave early the unvested shares can be taken back. In a UK company this is written into the articles and the shareholders’ agreement as leaver provisions. Without them, a developer who walks away after 3 months keeps every share they were given.
Vesting can also be tied to results. Shares can vest when an agreed target is reached, such as the product launching, a first contract being signed or revenue reaching a set level. That suits work with a defined outcome better than vesting by time alone.
The main structures compare like this:
| Structure | How it works | UK tax for the person | Suits |
|---|---|---|---|
| Shares with vesting | Shares issued now, unvested ones can be taken back on leaving | Income tax on any value above what’s paid, at issue | Co-founders and early hires joining while values are low |
| EMI options | Right to buy shares later at today’s market value | No income tax or National Insurance on exercise if the price is at least market value at grant | Employees who meet the working time test |
| Unapproved options | Right to buy shares later at a set price | Income tax on the gain when the option is exercised | Advisers, non-executives and consultants |
| Growth shares | A share class that only shares in value above a set hurdle | Low value at issue, so a smaller tax charge | Senior hires joining after value has been built |
| Cash plus a smaller stake | Part of the rate paid now, part in shares or options | Income tax on the cash, and on the shares as above | Work the company can partly afford to pay for |
Enterprise Management Incentives are the UK’s tax-advantaged option scheme. Since 6 April 2026, a company can grant them if it has gross assets of £120 million or less and fewer than 500 full-time employees.
Each employee can hold options worth up to £250,000 over a 3-year period and must work at least 25 hours a week, or 75% of their working time, for the company. Some trades, including banking, farming and property development, are excluded. Advisers and non-executives rarely meet the working time test, which is why they tend to get unapproved options or a small number of shares.
Issuing new shares to anyone can trigger the existing shareholders’ pre-emption rights, so those rights need to be disapplied or waived before the shares go out.
The written agreement sets out the work to be done, the number of shares or options, the vesting terms, what happens if the person leaves and that everything they create belongs to the company. Without that last part, a freelance developer paid in shares can still own the code they wrote.
When to Pay Cash Instead
Cash tends to suit better than sweat equity when things like these apply:
- the work is a defined job with an end, such as building a website, that a contractor can quote for
- the shares already have a real value, so the person would face a tax bill with no cash to pay it
- the stake would be so small that the documents, valuation and HMRC returns aren’t worth it
- the person needs the income and would have to leave if the shares were all they received
- the company has just raised and has the money to pay
A mix of a lower cash rate and some options often sits between the two, and it keeps the stake smaller than paying for all of the work in shares.
Sweat Equity Outside the UK
In the US, shares received for services are taxable under section 83 of the Internal Revenue Code at their fair market value when they vest. A section 83(b) election, filed within 30 days of the shares being transferred, lets the person be taxed on their value at issue instead, which is usually far lower. Australia, Canada, Singapore and the UAE each have their own rules on shares given for work, so the same deal can be taxed very differently depending on where the person lives and works.
FAQs
What is sweat equity?
Sweat equity is ownership in a company given in return for work instead of cash. It can be shares issued straight away or options to buy shares later, and it’s often used by founders, early employees and advisers before a business can pay full salaries.
How much equity should you give for sweat equity?
The stake follows from the value of the work and the company’s valuation. £60,000 of work at a £1.5m pre-money valuation comes to 3.8%. The person taking shares may want more for the risk that the shares end up worth nothing, and that’s a negotiation.
Is sweat equity taxable in the UK?
Yes, shares given to a director or employee for their work are usually taxable as employment income on the difference between their value and what was paid for them. The bill is small when shares are issued at set-up and much bigger once the company has a valuation. Options under the EMI scheme can avoid income tax if the conditions are met.
Can sweat equity shares be taken back?
Sweat equity shares can only be taken back if the articles of association or the shareholders’ agreement contain leaver provisions. With vesting and leaver terms in place, unvested shares can be bought back, often at nominal value, when the person leaves. Without them, the person keeps every share.
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This explains how sweat equity generally works. It isn’t legal or tax advice, and a solicitor and accountant should check the terms and the tax position before shares or options are issued.
