OTS Review Identifies Drivers of UK Tax Complexity
Summary
The Office of Tax Simplification published a review commissioned by the previous Chancellor and Financial Minister, identifying drivers of tax complexity in the UK. The review provides guidance for officials making tax policy on ways to prevent or mitigate tax complexity. The OTS reaffirms its focus on individuals and small businesses as those who need tax simplicity most.
What changed
The OTS published a review setting out what drives tax complexity in the UK tax system and recommends approaches for government officials to prevent or mitigate that complexity. The review was commissioned as part of the five-yearly review of the OTS and is intended to define tax simplification and set out the OTS's aims and objectives for the next five years.
For affected parties, this review provides a framework for understanding how tax policy complexity impacts compliance costs and business decisions. Taxpayers and HMRC should expect future OTS work to prioritise simplification for individuals and small businesses. The review is informational and does not create new compliance obligations but signals the OTS's direction for future simplification work.
What to do next
- Monitor for updates
- Review OTS guidance on tax simplification approaches
Archived snapshot
Apr 16, 2026GovPing captured this document from the original source. If the source has since changed or been removed, this is the text as it existed at that time.
Policy paper
OTS Review of tax simplification
A review setting out what drives tax complexity, and some ways that officials making tax policy can work to prevent or mitigate that complexity.
From: Office of Tax Simplification Published 18 July 2022 Get emails about this page
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Review of simplification: Approach and interpretation
Ref: ISBN 978-1-5286-3490-8, E02750143
Unnumbered act paper
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Review of simplification: Approach and interpretation - web copy
Ref: ISBN 978-1-5286-3490-8, E02750143
Unnumbered act paper
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Details
This review, commissioned by the previous Chancellor and the Financial Secretary, sets out the things that drive tax complexity, and some ways that officials making policy can work to prevent or mitigate that complexity.
Tax complexity
Complex or unclear tax rules stifle productivity and mean more cost for taxpayers and government; and unintended incentives skew business and investment decisions and create the potential for distortions.
Simplification is not a policy in itself, but rather a principle to support the taxpayer through effective policy design and implementation. Its purpose is to help make tax compliance easy and cheap for taxpayers and for HMRC, as well as to support taxpayers to make the best choices in their business and family affairs, through better understanding of the tax system.
Sometimes policy objectives are inherently complex, and officials need to look for ways to mitigate the impact on taxpayers, including enhanced guidance, technology, making better use of intermediaries (such as banks, platforms and other engagers), and increased awareness.
A review of tax simplification
In November 2021, HM Treasury published the first five-yearly review of the OTS, concluding that the need for the OTS remains undiminished.
In the government’s response to the Treasury’s review of the OTS, the Financial Secretary to the Treasury, Lucy Frazer QC MP, said the Treasury’s review gave:
a clear endorsement of the importance of the role of the OTS and the work it does to advise the Chancellor on making the tax system simpler and easier for taxpayers to interact with.
As recommended in the Treasury’s review, the previous Chancellor and the Financial Secretary commissioned the OTS to carry out a review to define tax simplification and set out our aims and objectives.
This Review of Simplification is in response to that and discusses the OTS ’s priorities and aims for the next five years, reaffirming our focus on those who need simplicity the most: individuals and small businesses.
Bill Dodwell, OTS Tax Director said:
The OTS welcomes this opportunity to set out what we mean by tax complexity, and the ways we, and government officials and ministers, should look to prevent or mitigate it.
Recommendation
The OTS is not a policy-making body; that’s for officials and ministers. With that in mind, this report has only one recommendation: that the principle of simplification should be better embedded in the general tax policy making process. Whilst undoubtedly officials will not set out to make complex law, sometimes the policy itself or other drivers will make it so.
It suggests a framework of questions which officials and ministers may wish to consider when developing and re-visiting policy to look for complexity and mitigation:
- Are the rules, their purpose and their consequences easy to understand and predict?
- Are the rules and their administration taking advantage of modern developments, including technology?
- Is it easy enough to comply with the rules?
- Can taxpayers be better supported? This report recognises that this should neither be as simple nor as rigid as a ‘checklist’ but considered proportionately and meaningfully.
Notes for editors
- The OTS is the independent adviser to government on simplifying the UK tax system. The OTS makes recommendations for the government to consider. It does not implement changes; that is a matter for officials and ministers.
- The OTS works to improve the experience of all who interact with the tax system. It aims to reduce the administrative burden, which is what people encounter in practice, as well as looking to simplify the rules. Simplification of the technical and administrative aspects of tax are important, both to taxpayers and to HMRC.
- The HM Treasury’s first five-yearly review of the OTS, published in November 2021, concluded that the need for the OTS remains undiminished. Press enquiries only please contact Julie Gillespie, OTS Press Officer, on 03000 585028.
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Published 18 July 2022
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