Tolley+ Research

Tolley+™ Research
Find the answers you need in the definitive source of tax research.
  • Research starts it.
  • Guidance explains it.
  • AI enhances it.
  • Tolley+™ connects it.
Get My QuoteLog in

Why use Tolley+ Research?

Get all the tax and accountancy intelligence your business needs with the largest reference library of its kind in the UK.

Save time

Our state-of-the-art platform and advanced search technology will help you effortlessly find the right answers faster, enabling you to always deliver exceptional quality to your clients or business.

Find all the answers you need

No need to search anywhere else. Tolley+ is grounded in the largest repository of accurate and exclusive tax content, including Simon’s and De Voil.

Advise with confidence

Tolley sources are quoted in court and parliament and are frequently used by HMRC. Ensuring you have the most reliable information to make the right decisions.

Reduce risk

Never miss changes in tax legislation that matter to you. Legislation is available within 24 hours, including annotations and links to Simon’s & De Voil and HMRC Guidance.

Don't miss relevant content

Interpreting complex legislation is hard. Cross-referencing ensures that you are seeing all related content in one place. For instance, we have inserted over 100,000 cross-references in Simon’s Taxes to legislation and HMRC manuals alone.

Empower your team

Research is easy for all levels of experience, with guided introductions, starting point pages, commentary and notes.

Tax Support Helpline

Get instant access to expert advice on any tax query. Our dedicated team of tax experts are just a phone call away.

Build your business

Our regular news updates and analysis highlight potential opportunities for expanding your work and draw attention to the risks you can help your clients to avoid.

Get My Quote

See what Tolley+ Research users are saying

Tolley+ Research provides you with easy access to all the information you need

Pinned sources

Build your personalised selection of titles on the virtual bookshelf. Easily return to your most used sources or narrow your search to just one or a select handful.

Advance searching & browsing

Natural language search and dynamic filters allow you to browse through titles and chapters or find the specific answers you're searching for faster. Plus with TolleyThis! extension you can search Tolley+ from any website as well as within Office.com.

HMRC versioning

Only Tolley's HMRC Manual Comparator lets you quickly identify and redline any recent additions or deletions that have been made to any HMRC Manual document you are viewing. It serves as a vital resource for professionals needing to reference past views or historical positions held by HMRC.

Starting points

Revolutionise your research experience. These curated pages provide a comprehensive topic overview, including summaries, the essential legislation underpinning the topic, related content, and HMRC manuals.

Notes

Add your own notes directly within the platform, capturing your thoughts and insights seamlessly and securely. Admins can add notes visible to your entire organisation subscription, while your notes remain unique to you.

Folders

At Tolley, we understand that every professional has their own unique workflow and organisational needs. That's why we've introduced Folders, a powerful new feature that allows you to save and categorise documents in custom folders, tailored to your preferences.

Research history

With our intuitive Research History feature, you can effortlessly track and revisit your past research activities, ensuring no valuable insight is ever lost. This tool is designed to save you time by providing quick access to previously viewed documents and searches, allowing you to build upon your past work without the need to start from scratch.

News alerts and analysis

News alerts as developments happen, commentary and analysis on the latest developments in tax and specialist case summaries. Allowing you to find new opportunities for clients quickly, whilst ensuring the information you get is always accurate.

Practice management tools

Access a suite of resources in the form of focused proforma documents and policies tailored to meet the needs of your practice.

Complete coverage of tax & accountancy - choose the content that meets your needs

  • Elements Menu

    A solid foundation to meet your client’s needs. Get fast online access to core resources like the Tolley Tax Annuals, Whillans Tax Tables, and Tolley’s Tax Guide. Access to the Yellow and Orange Tax Handbooks is also included for when deeper research is required.

  • Essentials Menu

    Access to the core elements of taxation and accountancy, including the market leading Tax Annuals, Whillans Tax Tables, Tolley’s Tax Guide and Tolley’s Taxwise I. Paired with fully annotated and consolidated direct and indirect legislation, along with Simon’s in-depth commentary, tax cases, HMRC materials, APB/ASB Materials, news, forms, the Finance Act Handbook and Budget Service.

  • Fundamentals Menu

    Practical guidance and expert commentary to support all areas of work encountered in high-street accountancy practices, covering accountancy, taxation, company and commercial law, along with practice management tools.

  • Gold Menu

    A complete research service created to suit the needs of full-service general practice firms. This menu includes Simon’s Taxes, all tax annuals, and direct tax planning titles, along with resources specific to your client base. Paired with fully annotated and consolidated direct and indirect legislation.

  • Tax Library Menu

    The most comprehensive research service created to suit the needs of top-tier national and international full-service firms. This menu also includes a range of legal, compliance and company secretarial titles, as well as our full range of specialist tax sources.

  • In-House Tax Practitioner Menu

    This menu provides comprehensive coverage of all relevant direct and indirect legislation, detailed commentary, analysis, cases, news, and essential HMRC materials your in-house tax team needs. With a focus on practical tools and latest developments in tax law, the menu also gives you access to APB/ASB Materials, detailed tax rates and allowances, news, forms, the Finance Act Handbook and Budget Service.

  • Indirect Menu

    A comprehensive menu for indirect tax professionals, ensuring complete confidence when advising clients. This includes online access to key indirect tax resources like De Voil Indirect Tax Service, VAT annuals, and indirect tax planning titles, paired with fully annotated and consolidated indirect legislation

  • International Tax Menus

    Access comprehensive international coverage from more than 100 countries — spanning Pillar Two, transfer pricing, global mobility, VAT, offshore trusts and beyond. From multi-jurisdictional tax and global mobility to region-specific materials across Europe, the Middle East, Africa and Asia Pacific, these menus connects you to the world’s most trusted commentary, legislation, case law and guidance.

    Curated by leading experts and updated continuously, this content helps you interpret cross-border rules with clarity, manage risk confidently and deliver well-grounded advice wherever your clients operate.

  • Global Corporate Tax Menu

    This menu offers comprehensive country-specific guides for domestic payroll compliance obligations, along with practical guidance that cover Europe and the Rest of the World. The included tools assist in implementing effective global payroll policies, enabling cost-effective and compliant global mobility programs.

  • Platinum Menu

    A comprehensive research service designed for large general practice firms handling a broad range of clients. Covering all elements of taxation and core accountancy this menu includes Simon’s Taxes and De Voil Indirect Tax Service, along with all our tax annuals and tax planning titles. This menu also includes specialist content such as Spitz and Clarke.

  • In-House Tax Essentials Menu

    A tailored menu offering essential elements of Tolley+ Research to meet the varied needs of small in-house tax teams. It covers relevant direct and indirect legislation, detailed commentary, analysis, cases, and HMRC materials.

91% of the top 100 UK tax firms use Tolley

Get My Quote

Tolley®Library has evolved into Tolley+

The UK’s largest collection of up-to-date tax legislation, case law and commentary fully integrated with Tolley+ Guidance & Tax Tools. Easily discover what the law says and what to do about it, all in one place.

Complete coverage

Access over 500 sources covering all your tax needs. Including more than 100 jurisdictions covering international tax and global mobility.

See how the law has changed

Historical versioning and legislative timelines will let you see exactly what has changed in legislation over time.

Always have the edge

Always up-to-date, always relevant. Understand the impact of the latest changes for your business or clients.

Dedicated customer support

We offer free onboarding and 24/7 customer support. Contact us to learn more about the types of support available to you throughout the lifetime of our partnership with you.

Try Tolley+ Research today

See the difference it could make to you and your team

Get My Quote

Market-leading Tolley® content, tools and AI - all in one place

Unlock Essential
Tax Research

Access the UK’s largest collection of up-to-date tax legislation, case law, expert commentary and news. Advanced AI-powered search, HMRC versioning and cross-referenced guidance help you find fast, accurate answers you can trust ‐ every time.

Get My Quote →

Apply Tax Legislation Confidently
with Practical Guidance

Simplify complex tax tasks with expert-written guidance, templates and checklists. Integrated with Research, it helps every professional turn knowledge into accurate, compliant action ‐ faster.

Learn more →

Deliver Faster, Safer Work
with Tax Tools

Reduce time on repetitive tasks with interactive calculators, SmartLists and flowcharts designed around real-world tax workflows. From capital allowances to VAT validation, you can achieve consistent, accurate outcomes ‐ quickly and with assurance.

Learn more →

Move Faster from Question to Review‑Ready Work
with Tolley+™ with Protégé™

Start with a tax question or task and move through guided AI workflows grounded in trusted Tolley content and expert tax logic. Tolley+ with Protégé (formerly Tolley+ AI™) brings research, analysis and drafting into one connected flow, producing structured outputs ready for professional review.

Learn more →

Get a quote for Tolley+™ Research