Tax system discourages employment, investment and risk-taking. It needs reform.

By Nuffield Foundation

Employees’ salaries currently attract thousands of pounds more in tax each year than the incomes of people who are self-employed or working through their own company.

A new report from the IFS, funded by the Nuffield Foundation, argues that this is unfair and pushes people towards working through their own business rather than as employees. At the same time, the tax system discourages investing in a company and taking risks.

The IFS researchers argue that the parts of the UK tax system that dictate how different forms of income are taxed are not fit for purpose. The report offers both a long-term solution to these problems and practical steps towards achieving a fairer tax system.

Current problems with the tax treatment of business owners and investment

There are now about 5 million people getting income from self-employment and about 2 million company owner-managers. That’s one in five of the UK’s workforce working through their own business. Their numbers have been growing rapidly – up from about 4 million and 1 million respectively 20 years ago – in part because their incomes are taxed at much lower rates than the incomes of employees doing similar work.

For a job generating £40,000, tax in 2020–21 is £3,300 higher if the job is completed through an employment contract rather than by someone who is self-employed, and £4,300 higher than if they work through their own company. This is mostly because employees’ salaries are subject to employers’ National Insurance contributions whereas other incomes are not. The differences can be even greater because we continue to levy much lower tax rates on capital gains than on earned income – something that overwhelmingly benefits the wealthiest, with almost two-thirds of taxable capital gains realised each year being made by people realising gains of over £1 million that year.

Preferential tax rates on capital gains, dividends and self-employment income are not well targeted at encouraging entrepreneurial risk-taking and investment. The biggest giveaways go to those who make big profits without investing much money.

Those who make substantial investments in a business for a modest return or who risk making a loss are penalised by the tax system. This is the group most likely to be deterred from investing by the tax system.

In the wake of the COVID-19 crisis, higher taxes seem likely. Removing preferential tax rates would be a natural place to look. But simply raising taxes on income from business when the system is so poorly designed risks creating more inequity and stifling the economic growth that we need.

The long-run solution: higher tax rates and a reformed tax base

The policy challenge is to tax capital income and gains at the same rates as labour income without creating barriers to saving and investment. As things stand, simply increasing tax rates on income from business, to bring them closer to tax rates on employment, would worsen the existing distortions to investment and risk-taking. So as well as increasing tax rates on business incomes, we need to change the tax base – the definition of what is taxed – to give full deductions for amounts saved or invested and allow losses to be offset against as broad a set of income as possible. There are various ways the tax base changes could be achieved.

With a reformed tax base, tax rates could be aligned across all forms of income while investment incentives would be improved.

New ideas for practical steps in the right direction

Moving straight to the long-run solution would be a big reform creating a lot of winners and losers, and might be hard to achieve in the short run. So the report illustrates a range of smaller reform packages which would improve the system compared with today and would be steps on the way to a better system. There is no one ‘right’ path to the long-run ideal; the report discusses a number of possible options, including, for example:

  • Tax rates on dividends and capital gains could be increased to standard income tax rates while people who buy new shares in a company – including their own company – could get income tax relief on the investment, paying tax when they get their money out instead (like with a pension). This would remove disincentives to invest in a company while also ensuring tax is paid at full income tax rates on returns to that investment.
  • Tax rates on self-employment income could be increased, but self-employed people who make a loss and have no other income that year could be allowed to deduct the loss from income from their next job or business venture. This would align tax rates more closely while reducing disincentives for risky entrepreneurial activity.
  • Tax rates on dividends and capital gains could be increased but indexation of capital gains for inflation reintroduced, so that only above-inflation gains were taxed. This would both reduce avoidance incentives and reduce disincentives to save and invest.

These types of packages move away from blanket tax reductions for anyone whose income is labelled as ‘business income’ towards targeted measures that reduce the tax penalty for those who invest or take risks.

There is no pain-free way to fix the current tax system: any meaningful reform will create losers as well as winners. But keeping the status quo is also a choice – one that unfairly penalises ordinary employees and investors, and creates inefficiency and administrative costs that make us all poorer.” Stuart Adam, a senior research economist at IFS and an author of the report

Helen Miller, a deputy director at IFS and also an author of the report, said:

“Better-designed taxes allow us to raise more revenue with less economic harm. This should be even more important in the wake of the COVID-19 crisis. Policymakers could choose reforms that would reduce disincentives for businesses to invest, employ people and take risks, all of which would aid the recovery and help us to ‘build back better’. The government has struggled to get support to some of the self-employed during this crisis. But that doesn’t mean we should permanently keep across-the-board preferential tax rates for business owner-managers. If there is concern about low-paid workers, we should reduce taxes for employees and the self-employed equally, not levy higher taxes on employment that push it out of the reach of many.”

Alex Beer, Welfare Programme Head at the Nuffield Foundation, said:

“The sobering descriptions in this report highlight the unfairness, inefficiency and complexity inherent in the current approach to taxing different forms of income, specifically the different treatment of employment and labour income compared to business ownership and capital incomes. This penalises employees and distorts investment decisions, to the detriment of social well-being. But it doesn’t need to be this way, the authors, who listened to and engaged a wide audience of stakeholders throughout the study, set out clear pathways for reform that would result in a fairer, more equitable, system.”

Related project


By Nuffield Foundation

Explore our projects

A front view of a two teenage girls on the minibus on the way to go on a hiking field trip. They are looking at one of the girls mobile phones and smiling.

Welfare | 2025 - 2027

A Digital Lives’ Framework for Counsellors and Psychotherapists

View project

Welfare | 2025 - 2028

Full Fact: Evidence-based responses to harmful misinformation

View project
New

Welfare | 2025 - 2027

All women are born (un)equal: menopause, HRT and women’s well-being

View project
Female electrician arrives at job. She is wearing an orange hi-vis jacket and behind her is a van.
New

Welfare | 2025 - 2026

Characterising the job ladder in England

View project
traditional detached house within residential estate in England UK, several houses in view have solar panels on the roof.
New

Welfare | 2025 - 2026

Distributional impacts of net zero on electricity consumers

View project
New

Education | Welfare | 2025 - 2028

Clear Skies, Clear Minds: Air quality and children’s welfare

View project
Portrait of a senior woman at home checking a letter in the mail
New

Welfare | 2025 - 2026

How can low earners afford a commensurate retirement income?

View project
New

Education | Welfare | 2025 - 2028

The evaluation of Thrive at Five’s sites in Stoke and Redcar

View project
Close up of a Young woman going over her retirement savings at home while using her laptop
New

Welfare | 2025 - 2026

Tackling the information gap in retirement saving decisions

View project
baby eating fruit on highchair
New

Welfare | 2025 - 2026

Impact of the cost of childcare on parental mobility

View project
Young family with baby look at their finances at the table. They are surrounded by paperwork and a laptop.

Welfare | 2025 - 2027

Roots of problem debt and policies to mitigate its consequences

View project
Volunteers unpacking food that has been delivered for distribution to a charity food bank centre. The women are wearing bright blue jackets to identify their volunteer roles in the centre.

Welfare | 2024 - 2026

Food banks as hubs in the crisis ecosystem

View project
traditional detached house within residential estate in England UK, several houses in view have solar panels on the roof.
New

Welfare | 2025 - 2026

Distributional impacts of net zero on electricity consumers

View project
Portrait of a senior woman at home checking a letter in the mail
New

Welfare | 2025 - 2026

How can low earners afford a commensurate retirement income?

View project
Female electrician arrives at job. She is wearing an orange hi-vis jacket and behind her is a van.
New

Welfare | 2025 - 2026

Characterising the job ladder in England

View project
A front view of a two teenage girls on the minibus on the way to go on a hiking field trip. They are looking at one of the girls mobile phones and smiling.

Welfare | 2025 - 2027

A Digital Lives’ Framework for Counsellors and Psychotherapists

View project
Close up of a Young woman going over her retirement savings at home while using her laptop
New

Welfare | 2025 - 2026

Tackling the information gap in retirement saving decisions

View project
New

Welfare | 2025 - 2027

All women are born (un)equal: menopause, HRT and women’s well-being

View project
baby eating fruit on highchair
New

Welfare | 2025 - 2026

Impact of the cost of childcare on parental mobility

View project

Welfare | 2025 - 2028

Full Fact: Evidence-based responses to harmful misinformation

View project
New

Education | Welfare | 2025 - 2028

The evaluation of Thrive at Five’s sites in Stoke and Redcar

View project
New

Education | Welfare | 2025 - 2028

Clear Skies, Clear Minds: Air quality and children’s welfare

View project
Dad and children are walking up to the front door of a house.
New

Welfare | 2024 - 2027

Family change, wellbeing and social policy

View project
Young family with baby look at their finances at the table. They are surrounded by paperwork and a laptop.

Welfare | 2025 - 2027

Roots of problem debt and policies to mitigate its consequences

View project
Happy woman talking to a colleague at work
In progress

Education | Welfare | 2024 - 2026

Employer investment in upskilling and reskilling in a changing economy

View project
Commuters waiting to get on the tube. There are two men and two women. One woman is looking at her phone, looking concerned.
In progress

Welfare | 2024 - 2025

Routes to safety: Enhancing referrals to make victims of domestic abuse safer, sooner 

View project
A woman is sat on the edge of a bed staring at her phone while her daughter is in the background.
In progress

Welfare | 2023 - 2025

Virtual parent support portals: a new research and practice agenda

View project
Teenager hugging their mother
In progress

Welfare | 2023 - 2026

The long-term effects of being a young carer

View project
Elderly woman and adult daughter out shopping
In progress

Welfare | 2023 - 2026

Connecting pensions, health and care

View project
Mother, father, son and daughter standing in front of their house
In progress

Welfare | 2023 - 2025

A regional regeneration index to track socioeconomic ‘Levelling Up’

View project
Man working on a laptop using sign language on a video call
In progress

Welfare | 2023 - 2025

Designing inclusive remote and hybrid working to support disabled workers

View project
Children walking with their parents in the countryside
In progress

Welfare | 2022 - 2024

Children’s lives in changing places

View project
Older man working from home on a video call
In progress

Welfare | 2022 - 2024

The impact of pension auto-enrolment and COVID-19 on saving behaviours

View project
Worried woman alone in a room, resting her head on her arms
In progress

Welfare | 2022 - 2025

Links between cognitive impairment and exploitation in England

View project
A man working as a delivery driver sits in the driver's seat, checking his list on a tablet
In progress

Welfare | 2022 - 2023

Redesigning labour market policies for the future of work

View project
Older people drinking tea at a meeting at a community centre
In progress

Welfare | 2022 - 2024

Using administrative data to understand community well-being

View project
traditional detached house within residential estate in England UK, several houses in view have solar panels on the roof.
New

Welfare | 2025 - 2026

Distributional impacts of net zero on electricity consumers

View project
Portrait of a senior woman at home checking a letter in the mail
New

Welfare | 2025 - 2026

How can low earners afford a commensurate retirement income?

View project
Female electrician arrives at job. She is wearing an orange hi-vis jacket and behind her is a van.
New

Welfare | 2025 - 2026

Characterising the job ladder in England

View project
Close up of a Young woman going over her retirement savings at home while using her laptop
New

Welfare | 2025 - 2026

Tackling the information gap in retirement saving decisions

View project
New

Welfare | 2025 - 2027

All women are born (un)equal: menopause, HRT and women’s well-being

View project
baby eating fruit on highchair
New

Welfare | 2025 - 2026

Impact of the cost of childcare on parental mobility

View project
New

Education | Welfare | 2025 - 2028

The evaluation of Thrive at Five’s sites in Stoke and Redcar

View project
New

Education | Welfare | 2025 - 2028

Clear Skies, Clear Minds: Air quality and children’s welfare

View project
Dad and children are walking up to the front door of a house.
New

Welfare | 2024 - 2027

Family change, wellbeing and social policy

View project
Black woman typing on laptop in living room
New

Welfare | 2024 - 2025

Enhancing, localising and democratising tax-benefit policy analysis

View project
A young nurse does a blood pressure check on an elderly woman at home.
New

Welfare | 2024 - 2027

Evaluating the outsourcing of social care in England

View project
New

Welfare | 2024 - 2027

Gypsy, Roma, Traveller Youth: mitigating exclusions using the digital?

View project
Reported

Education | Welfare | 2022 - 2024

Understanding school attendance, education and labour market outcomes

View project
Grandparents having fun outdoors with their granddaughter, who is eating an apple and laughing: Understanding family and community vulnerabilities in transition to net zero
Reported

Welfare | 2021 - 2023

Understanding family and community vulnerabilities in transition to net zero

View project
Father and son using laptop at home
Reported

Welfare | 2021 - 2025

Developing a minimum digital living standard for households with children

View project
Close up of a young girl and her father wearing protective face masks during the COVID-19 pandemic outside.
Reported

Welfare | 2021 - 2023

The Economy 2030 Inquiry: navigating a decade of change

View project
Toddler-gleefully-eats-baked-beans-How-COVID-19-is-affecting-food-security-proj
Reported

Welfare | 2020 - 2021

How the COVID-19 crisis is affecting food security

View project
Teenage-girl-looks-at-smartphone-next-to-laptop-Growing-up-under-COVID-19-PROJ
Reported

Education | Welfare | 2020 - 2022

Growing up under COVID-19

View project
Mother carrying daughter outside their home
Reported

Welfare | 2020 - 2022

COVID realities: families on low incomes during the pandemic

View project
Woman-looks-at-smartphone-screen-How-the-UK-public-gets-information-about-COVID-19-PROJ
Reported

Welfare | 2020 - 2020

How the UK public gets information about COVID-19

View project
Woman-medical-professional-treats-patient-impact-MSK-conditions-outcomes-other-illnesses-PROJ
Reported

Welfare | 2020 - 2022

The impact of musculoskeletal conditions on outcomes of other illnesses

View project
A middle-aged teacher sits at her desk and helps a female student with a problem in her textbook.
Reported

Education | Welfare | 2020 - 2020

Measuring the disadvantage attainment gap in 16-19 education

View project
Reported

Welfare | 2013 - 2017

IFS Green Budget 2013 – 2016

View project
Reported

Welfare | 2013 - 2016

Data about fathers in birth cohort studies (Life Study)

View project
Search projects

We improve people’s lives by funding research that informs social policy, primarily in Education, Welfare and Justice. We also fund student programmes that give young people skills and confidence in science and research.

We offer our grant-holders the freedom to frame questions and enable new thinking. Our research must stand up to rigorous academic scrutiny, but we understand that to be successful in effecting change, it also needs to be relevant to people’s experience.

Profile