Compare · Tolley
Tolley alternatives for UK accountants and tax advisers
Tolley is LexisNexis’s UK tax brand, home to Simon’s Taxes, the De Voil Indirect Tax Service, Tolley+ Guidance and Tolley+ with Protégé, its tax AI. 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 Tolley is still the better fit.
Nylon vs Tolley: the short answer
As at 22 October 2026, in pounds sterling. Details and sources below.
Tolley
Nylon
Works in
Tolley+ on the web, plus TolleyThis! search on any webpage
Nylon, plus Claude, ChatGPT and Copilot (Adviser and Elite)
Contract
Quoted per firm; terms not on Tolley’s public pages
Monthly, cancel anytime
Price ex VAT
Quote only, scoped to firm size, features and content
£39–£199 per user a month
AI answers
Tolley+ with Protégé: cited answers, drafting and workflows
Every answer cites and links the primary source
Commentary
Simon’s Taxes, De Voil and Tolley+ Guidance
Not included: answers cite legislation, HMRC guidance and cases
Choose Nylon for cited answers from UK primary sources, in the tools you already use. Keep Tolley if your work runs on Simon’s, De Voil and Tolley’s guidance, and add Nylon alongside.
Each vendor’s own website is the source for its column.
The best Tolley alternatives at a glance
What each product says about itself on its own website, as at 22 October 2026. Prices exclude VAT unless stated.
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
Croner-i
Croner commentary and guidance, with a tax and VAT advice line
Yes, from Croner’s own content
Quote-based
Blue J
AI research across UK, US and Canadian tax
Yes
£1,500 a year per user (sole practitioners; VAT not stated); teams: quote
Accordance
Multi-agent AI for tax, audit and accounting teams
Yes, with a source list
Not published
Lexis+ with Protégé
Broad UK legal research and drafting
Yes
Quote-based
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 accountants and tax advisers choose Nylon over Tolley
Tolley is strong on commentary, practical guidance and tax tools. Nylon is built for cited answers from the law itself, wherever you work.
Research inside your AI assistant
Adviser and Elite seats bring Nylon into Claude, ChatGPT and Microsoft Copilot, with every answer cited. Tolley’s public pages describe TolleyThis!, a browser extension for searching Tolley+, but not a connector for any of those assistants.
Per-user prices, published
Nylon publishes a per-user price for Starter, Adviser and Elite. Tolley quotes every subscription: it says the price depends on the size of your organisation, the capabilities you need and the content you can access.
Start today, cancel anytime
Start a free 7-day trial when you sign up, then pay monthly and cancel anytime. Tolley arranges trials and demos through its team, and its contract terms aren’t described on its public pages.
The whole library on every plan
Every Nylon plan answers from the same UK tax library: legislation, HMRC manuals and guidance, and tribunal and court decisions, with each citation linked. Tolley+ Research comes in content menus, from Elements to Tax Library, and you choose the content you need.
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 Tolley, weren’t tested.
Nylon vs Tolley, side by side
As at 22 October 2026. The Tolley column comes from Tolley’s and LexisNexis’s websites.
Where you use it
The Tolley+ web platform. The TolleyThis! browser extension searches Tolley+ from any webpage and within Office.com. A connector for Claude, ChatGPT or Microsoft Copilot isn’t described on Tolley’s public pages.
Nylon on the web, and Claude, ChatGPT and Microsoft Copilot through the AI connector (Adviser and Elite).
Contract
Not described on Tolley’s public pages. Each subscription is quoted.
Monthly. Cancel anytime.
Price
Quote only. Tolley says the price depends on the size of your organisation, the capabilities you need and the scope of content access.
£39, £99 or £199 per user a month, ex VAT. Enterprise: quote.
AI answers
Tolley+ with Protégé, formerly Tolley+ AI, gives citation-backed answers, drafts research notes and client communications, summarises cases and runs pre-built workflows. Every AI response links to Tolley content and your Vault documents. A General AI mode adds other models and web search.
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
The Tolley collection of primary law, Tolley’s own commentary (including Simon’s and De Voil) and practical guidance, plus your documents in up to 50 Vaults.
Nylon’s library: UK tax legislation, HMRC manuals and guidance, and tax decisions from the tribunals and courts.
Jurisdictions
UK tax, plus international menus covering more than 100 jurisdictions.
Australian, New Zealand and UK tax legislation and guidance in one library.
Expert commentary
Simon’s Taxes (since 1948) and the De Voil Indirect Tax Service in Tolley+ Research menus, plus six Tolley+ Guidance modules written by Tolley’s in-house experts.
No editorial commentary. Nylon answers from the primary sources.
Practical tools
Tolley+ Tax Tools (calculators, SmartLists, flowcharts and Tax Case Analytics), worked examples and templates, and the HMRC Manual Comparator for changes to HMRC manuals.
No calculators or templates. Nylon drafts advice letters and memos, and reviews uploaded documents.
Trial
Free trial or demo on request. Tolley doesn’t state the trial’s length.
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)
Published per-user prices, billed monthly
A free 7-day trial when you sign up
The same UK tax library on every plan, with every citation linked
What you give up
Simon’s Taxes, De Voil and Tolley+ Guidance
Tolley+ Tax Tools and the HMRC Manual Comparator
Tolley’s Tax Support Helpline
International tax content across more than 100 jurisdictions
Test Nylon on your own Tolley questions
Bring three questions you researched in Tolley this month. In the demo, we’ll answer them in Nylon with every source linked.
Other Tolley alternatives
Each summary comes from the product’s own website, as at 22 October 2026.
2
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 from Croner’s own expert content.
Best for
Firms that want another publisher’s commentary and guidance, with an expert advice line.
Pricing
Quote-based.
Consider it if
You want a telephone advice line alongside your research tool.
3
Blue J
AI tax research with in-line citations. Its UK coverage includes legislation, HMRC manuals and guidance, VAT notices, and tax tribunal and court decisions, plus Tax Notes commentary and IBFD international content. It also covers US and Canadian tax.
Best for
Firms researching UK, US and Canadian tax, or cross-border questions.
Pricing
£1,500 a year per user for sole practitioners (VAT not stated); teams by quote. 7-day free trial.
Consider it if
Your clients have US or Canadian tax affairs as well as UK ones.
4
Accordance
A San Francisco multi-agent AI platform for tax, audit and accounting teams, founded by former Stanford AI researchers. It shows its reasoning and a source list with each answer.
Best for
Firms that want one AI across tax, audit and accounting work.
Pricing
Not published; book a demo.
Consider it if
You want agentic AI across your practice. UK tax coverage isn’t described on Accordance’s public pages.
5
Lexis+ with Protégé
LexisNexis’s legal AI for drafting, research and analysis, formerly Lexis+ AI. It grounds work in LexisNexis legal content, including Halsbury’s Laws of England and Practical Guidance across 42 practice areas.
Best for
Law firms and legal teams doing broad UK legal research.
Pricing
Quote-based.
Consider it if
Your work is mostly legal rather than tax. For tax, LexisNexis sells Tolley+ with Protégé.
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 the law itself
Nylon
In Nylon or in Claude, ChatGPT and Copilot, billed monthly.
If your work runs on Simon’s, De Voil and Tolley guidance
Keep Tolley, add Nylon
Keep its commentary, tools and helpline, and use Nylon for cited answers in your AI assistant. Nylon is billed monthly, so you can run both.
If you want another publisher’s commentary
Croner-i
Commentary, HMRC manuals and a tax and VAT advice line.
If your clients have US or Canadian tax affairs
Blue J
Cited AI research across UK, US and Canadian tax.
If you want one AI across tax, audit and accounting
Accordance
Multi-agent research with a source list. Check its UK coverage first.
If your work is mostly legal
Lexis+ with Protégé
Broad UK legal research with Halsbury’s Laws and Practical Guidance.
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
Tolley alternatives: frequently asked questions
Questions about switching? Book a demo or email support@usenylon.com.
What is the best alternative to Tolley?
If you want cited AI answers from UK primary sources, Nylon: it links every answer to the source, works inside Claude, ChatGPT and Copilot (Adviser and Elite), and is billed monthly. For another publisher’s commentary and a tax and VAT advice line, Croner-i. For UK, US and Canadian tax in one AI tool, Blue J. For broad legal research, Lexis+ with Protégé. If your work runs on Simon’s Taxes and De Voil, Tolley is still a strong choice.
Does Tolley have AI?
Yes. As at 22 October 2026, Tolley’s AI is Tolley+ with Protégé, renamed from Tolley+ AI in Q2 2026. It gives citation-backed answers grounded in Tolley research and practical guidance, drafts research notes and client communications, summarises cases and runs guided workflows. Tolley says every AI response links to Tolley’s related content.
How does Tolley pricing compare with Nylon?
As at 22 October 2026, Tolley doesn’t publish prices. It quotes each subscription, and says the price depends on the size of your organisation, the capabilities you need and the scope of content access. Nylon costs £39, £99 or £199 per user a month ex VAT, billed monthly, and you can cancel anytime.
Does Nylon include Simon’s Taxes or De Voil?
No. Simon’s Taxes and the De Voil Indirect Tax Service are Tolley’s commentary, available in Tolley+ Research. Nylon answers from primary sources: UK tax legislation, HMRC manuals and guidance, and tribunal and court decisions. You can keep Tolley for its commentary and use Nylon for cited answers.
Can I use Nylon alongside Tolley?
Yes. Nylon is billed monthly, so you can run both and compare them on your own questions. With an Adviser or Elite seat, you can also ask Nylon from inside Claude, ChatGPT or Copilot.
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. Tolley offers free trials and demos on request.
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. Tolley, Tolley+ and Protégé 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.