Compare · Lexis+ with Protégé
Lexis+ with Protégé alternatives for UK tax advisers
Lexis+ with Protégé, formerly Lexis+ AI, is LexisNexis’s legal AI for drafting, research and analysis, built on UK case law and legislation, Halsbury’s Laws of England and Practical Guidance. For tax work, LexisNexis also sells Tolley+ with Protégé. If you’re weighing an alternative, compare where answers come from, how you check them, where you can use them and how you pay. Here’s how Nylon and five other options compare, and when Lexis+ with Protégé is still the better fit.
Nylon vs Lexis+ with Protégé: the short answer
As at 22 October 2026, in pounds sterling. Details and sources below.
Lexis+ with Protégé
Nylon
Works in
Lexis+ on the web, Word through Lexis Create+, and a Copilot agent (US releases)
Nylon, plus Claude, ChatGPT and Copilot (Adviser and Elite)
Contract
Term set in your order form; standard term not published
Monthly, cancel anytime
Price ex VAT
Quote only, tailored to your organisation and content
£39–£199 per user a month
AI answers
Protégé gives citation-backed answers, with case signals citation checks
Every answer cites and links the primary source
Library
UK case law, legislation, Halsbury’s Laws of England, Practical Guidance
Tax legislation, HMRC manuals and guidance, and tax decisions
Choose Nylon for cited tax answers from UK primary sources, in the tools you already use. Keep Lexis+ with Protégé if your work spans broad legal research, and add Nylon alongside.
Each vendor’s own website is the source for its column.
The best Lexis+ with Protégé alternatives at a glance
What each product says about itself on its own website, as at 22 October 2026. Nylon’s prices exclude VAT; Blue J doesn’t say whether its price includes VAT.
Nylon
Cited AI answers from UK primary sources, in Nylon or your AI assistant
Yes, on every plan
£39, £99 or £199 per user a month
Tolley
Simon’s Taxes, De Voil and Tolley guidance, with AI built in
Yes, in Tolley+ with Protégé
Quote-based
Croner-i
Croner commentary and guidance, with a tax and VAT advice line
Yes, from Croner’s own content
Quote-based
Blue J
AI tax research from UK sources, Tax Notes and IBFD
Yes
£1,500 a year per user (sole practitioners); teams: quote
Accordance
Multi-agent AI for tax, audit and accounting teams
Yes, with a source list
Not published
ChatGPT or Claude on their own
Quick drafting where nobody needs to trace the source
Only with web search on
Free and paid plans
Why UK tax advisers choose Nylon over Lexis+ with Protégé
Lexis+ with Protégé is strong for broad legal research, with Halsbury’s and Practical Guidance. Nylon is built for cited tax answers from the primary sources, wherever you work.
Research inside your AI assistant
Adviser and Elite seats bring Nylon into Claude, ChatGPT and Microsoft Copilot, with every answer cited. LexisNexis’s public pages don’t describe a connector for Claude or ChatGPT.
Built for tax work
Nylon answers from UK tax legislation, HMRC manuals and guidance, and tribunal and court decisions, and links each citation to the source. LexisNexis writes its Lexis+ with Protégé pages for legal professionals, and sells Tolley+ with Protégé separately for tax teams.
No minimum term
Nylon is billed monthly and you can cancel anytime. LexisNexis sets the term of a Lexis+ subscription in your order form, and its public UK pages don’t describe a standard term or how to cancel.
Per-user prices, published
Nylon publishes a per-user price for Starter, Adviser and Elite. Lexis+ with Protégé is quote-only: LexisNexis tailors the price to your organisation’s size, the capabilities you need and the content you access.
1. Nylon
Nylon: cited AI answers from UK primary sources
Nylon answers UK tax questions from tax legislation, HMRC manuals and guidance, and tribunal and court decisions, and links every citation to the source.
Cited answers
Every answer comes with hyperlinked citations to the primary source.
UK tax library
UK tax legislation, HMRC manuals and guidance, and tax decisions from the tribunals and courts.
Drafting and review
Draft advice letters, research memos and tax opinions, or upload client documents and ask what matters.
In your AI tools
Adviser and Elite seats include Nylon’s AI connector for Claude, ChatGPT and Microsoft Copilot.
Pricing
Starter £39, Adviser £99 and Elite £199 per user per month, ex VAT. Billed monthly; cancel anytime. Free 7-day trial. Enterprise pricing on request.
Nylon
When does a business have to register for VAT?
You must register if your taxable turnover for the last 12 months has gone over £90,000, or you expect it to go over £90,000 in the next 30 days alone [1]. Under the 12-month test, tell HMRC within 30 days of the end of the month you went over [2].
1
Value Added Tax Act 1994, Sch 1 para 1
2
Value Added Tax Act 1994, Sch 1 para 5
Illustrative example
Benchmark · October 2026
4.68 / 5
Nylon’s composite score on 91 CPA Program Australia Taxation questions, each graded blind against an expert reference answer.
Nylon
4.68
Claude Fable 5.1
4.32
GPT-6 Astra
4.28
Australian tax, compared with five general AI models. Specialist tools, including Lexis+ with Protégé, weren’t tested.
Nylon vs Lexis+ with Protégé, side by side
As at 22 October 2026. The Lexis+ with Protégé column comes from LexisNexis’s UK website and its global press releases.
Where you use it
The Lexis+ with Protégé web platform, and Microsoft Word through Lexis Create+, with links to iManage, SharePoint, NetDocuments and other document systems. LexisNexis’s June 2026 releases, datelined New York, describe a Protégé agent in Microsoft 365 Copilot and Teams, without saying whether it’s offered in the UK. A connector for Claude or ChatGPT isn’t described on LexisNexis’s public pages.
Nylon on the web, and Claude, ChatGPT and Microsoft Copilot through the AI connector (Adviser and Elite).
Contract
Set in your order form. LexisNexis’s UK general terms say the agreement runs for the number of days in the order form. A standard term, renewal terms and how to cancel aren’t described on its public UK pages.
Monthly. Cancel anytime.
Price
Quote only, based on your organisation’s size, the capabilities you need and the content you access. LexisNexis describes its pricing as customised.
£39, £99 or £199 per user a month, ex VAT. Enterprise: quote.
AI answers
Protégé answers questions, drafts and summarises, with citation-backed answers grounded in LexisNexis sources. Its case signals service checks the status and treatment of each authority. General AI adds OpenAI and Anthropic models and web search, and LexisNexis suggests confirming legal points in Legal AI.
Fast and research modes on every plan, plus deep research on Adviser and Elite. Every answer links each citation to the primary source.
What answers draw on
UK case law (600,000+ cases), legislation, Halsbury’s Laws of England, titles including Tolley, and Practical Guidance across 42 practice areas, as your subscription allows, plus your own documents in Vaults or your DMS. HMRC manuals aren’t described on LexisNexis’s Lexis+ pages.
Nylon’s library: UK tax legislation, HMRC manuals and guidance, and tax decisions from the tribunals and courts.
Jurisdictions
UK law, including Scottish and Welsh legislation, plus Practical Guidance modules for Ireland. LexisNexis runs separate sites for other countries.
UK, Australian and New Zealand tax legislation and guidance in one library.
Expert commentary
Halsbury’s Laws of England, and Practical Guidance written by practitioners. Its Tax practice area links to Tolley titles, including Simon’s Taxes, De Voil and the Yellow and Orange Tax Handbooks.
No editorial commentary. Nylon answers from the primary sources.
Drafting and tools
Drafts transactional and litigation documents and client communications, with pre-built workflows, up to 50 Vaults of 1,500 documents each, and Lexis Create+ in Word.
Nylon drafts advice letters, research memos and tax opinions, and reviews uploaded documents.
Trial
A free trial of Lexis+ with Protégé isn’t described on its UK product page, which offers a quote. LexisNexis’s 7-day trial of its practice-area content is for people who work in a legal capacity.
Free 7-day trial when you sign up, or book a demo.
What you gain with Nylon
Nylon inside Claude, ChatGPT and Microsoft Copilot (Adviser and Elite)
Answers from UK tax legislation, HMRC manuals and guidance, and tax decisions
Monthly billing, with no minimum term
UK, Australian and New Zealand tax legislation and guidance in one library
What you give up
Broad UK legal research, including Halsbury’s Laws of England and the All England Law Reports
Case signals citation checks and Practical Guidance across 42 practice areas
Drafting in Word through Lexis Create+
Test Nylon on your own Lexis+ questions
Bring three tax questions you researched in Lexis+ with Protégé this month. In the demo, we’ll answer them in Nylon with every source linked.
Other Lexis+ with Protégé alternatives
Each summary comes from the product’s own website, as at 22 October 2026.
2
Tolley
LexisNexis’s UK tax brand. Tolley+ with Protégé, renamed from Tolley+ AI in 2026, gives AI answers that link to Tolley research and guidance, including Simon’s Taxes, De Voil, and current and historic HMRC manuals.
Best for
Tax teams that want Tolley commentary and guidance, with AI from the same publisher.
Pricing
Quote-based. 7-day free trial of Tolley+ Guidance for users in the UK and Ireland.
Consider it if
You want LexisNexis’s tax content rather than its legal platform.
3
Croner-i
Croner’s tax, audit and accounting information service: commentary, legislation, tax cases, HMRC manuals and a tax and VAT advice line. Its AI assistant, Croner Intelligence, answers only from Croner’s own expert content.
Best for
Practices that want Croner commentary and guidance, with an expert advice line.
Pricing
Quote-based, ex VAT. A fixed first term that renews unless you give 90 days’ notice.
Consider it if
You want a telephone advice line alongside your research tool.
4
Blue J
AI tax research with in-line citations. Its UK answers draw on legislation, HMRC manuals and guidance, VAT notices, and tax tribunal and court decisions, plus Tax Notes commentary and IBFD content. It also has US and Canadian editions.
Best for
Firms that want AI tax research backed by Tax Notes and IBFD content.
Pricing
£1,500 a year per user for sole practitioners (VAT not stated); teams by quote. Annual plans. 7-day free trial.
Consider it if
You want a self-serve trial and international commentary in your answers.
5
Accordance
A San Francisco multi-agent AI platform for tax, audit and accounting teams. It shows its reasoning and a source list. Its public pages describe US federal, state and international tax.
Best for
Firms that want one AI across tax, audit and accounting work.
Pricing
Not published; book a demo. One-year term by default, renewing automatically.
Consider it if
Your work is mainly US tax. UK tax coverage isn’t described on Accordance’s public pages.
6
ChatGPT or Claude on their own
General AI assistants that answer from their training data and, when it’s on, web search. OpenAI’s help centre warns that ChatGPT’s citations can be incomplete, outdated or incorrect.
Best for
Quick drafting and orientation where nobody needs to trace the answer.
Pricing
Free and paid plans.
Consider it if
You add Nylon’s AI connector, so they search Nylon’s library and cite the source.
Which should you choose?
Match the tool to the work you do most.
If you want cited answers from tax law
Nylon
In Nylon or in Claude, ChatGPT and Copilot, billed monthly.
If your work spans broad legal research
Keep Lexis+, add Nylon
Keep Halsbury’s, case signals and Practical Guidance, and use Nylon for tax questions. Nylon is billed monthly, so you can run both.
If you want LexisNexis’s tax content
Tolley
Simon’s Taxes, De Voil and HMRC manuals, with AI in Tolley+ with Protégé.
If you want commentary and an advice line
Croner-i
Croner commentary, HMRC manuals and a tax and VAT advice line.
If you want Tax Notes and IBFD content
Blue J
AI answers from UK sources, Tax Notes and IBFD.
If your work is mainly US tax
Accordance
Multi-agent AI across tax, audit and accounting.
Security your firm can check
Nylon is SOC 2 Type I and Type II audited, and ISO 27001 and ISO 42001 certified.
Independently audited
SOC 2 Type I and Type II reports are available, and Nylon holds ISO 27001 and ISO 42001 certification.
Encrypted
All data that passes through Nylon is encrypted in transit and at rest.
Not used for training
Your questions and Nylon’s answers aren’t shared, and your inputs are never used to train AI models.
Admin controls
Every plan includes advanced organisational controls.
Baqir Hussein, FCCA · Founder & Director, Finex Chartered Certified Accountants
Lexis+ with Protégé alternatives: frequently asked questions
Questions about switching? Book a demo or email support@usenylon.com.
What is the best alternative to Lexis+ with Protégé?
For tax work, Nylon: it answers from UK tax legislation, HMRC manuals and guidance, and tax decisions, links every answer to the source, works inside Claude, ChatGPT and Copilot (Adviser and Elite), and is billed monthly. For LexisNexis’s own tax content, Tolley. For commentary with a telephone advice line, Croner-i. For Tax Notes and IBFD content, Blue J. For broad legal research, Lexis+ with Protégé is still a strong choice.
Is Lexis+ with Protégé the same as Lexis+ AI?
Yes. LexisNexis renamed Lexis+ AI to Lexis+ with Protégé in the first quarter of 2026. Protégé is the AI assistant inside it, and some LexisNexis materials still use the old name.
Does Lexis+ with Protégé cover UK tax?
As at 22 October 2026, LexisNexis describes Lexis+ with Protégé as legal AI for legal professionals, built on its primary law, secondary sources and Practical Guidance. Practical Guidance has a Tax practice area that links to Tolley titles, and LexisNexis sells Tolley+ with Protégé separately for tax teams. HMRC manuals aren’t described on its Lexis+ pages. Nylon’s library includes UK tax legislation, HMRC manuals and guidance, and tax decisions.
How does Lexis+ with Protégé pricing compare with Nylon?
As at 22 October 2026, Lexis+ with Protégé is quote-only: LexisNexis tailors the price to your organisation’s size, the capabilities you need and the content you access, and sets the term in your order form. Nylon costs £39, £99 or £199 per user a month ex VAT, billed monthly, and you can cancel anytime.
Can I use Nylon alongside Lexis+ with Protégé?
Yes. Nylon is billed monthly, so you can keep Lexis+ with Protégé for broad legal research and use Nylon for tax questions.
Does Nylon have a free trial?
Yes. Start a free 7-day trial when you sign up, or book a demo to see Nylon on your own questions. Plans are monthly and you can cancel anytime. A free trial of Lexis+ with Protégé isn’t described on LexisNexis’s UK product page, which offers a quote.
Can I use Nylon in ChatGPT, Claude or Copilot?
Yes, with an Adviser or Elite seat. Nylon’s AI connector lets those assistants search Nylon’s library and cite the source.
Is Nylon secure enough for client work?
Nylon is SOC 2 Type I and Type II audited, and ISO 27001 and ISO 42001 certified. Data is encrypted in transit and at rest, and your inputs are never used to train AI models.
Keep exploring
Nylon for accountants
Research, drafting and review for accounting firms.
Tax research benchmark
91 Australian tax questions, six systems, graded blind.
AI connectors
Nylon in Claude, ChatGPT and Copilot.
Plans
Starter, Adviser and Elite, billed monthly.
Information about other products comes from their own websites as at 22 October 2026 and can change. Prices are in pounds sterling. Lexis+, Protégé and Tolley are trade marks of LexisNexis. Other product names belong to their owners. Nylon isn’t affiliated with or endorsed by any of them. Nylon’s October 2026 benchmark compared general AI models, not the other products on this page. Spotted something out of date? Email support@usenylon.com.