Legal
Disclaimer
Last updated: 1 January 2026
Polyconomic is a calculation tool. It is not a tax adviser, accountant, or regulated financial service. Please read this page before relying on the output of the service.
This is not tax advice
Nothing on this website or produced by our service constitutes tax advice, legal advice, or financial advice. The figures Polyconomic produces are based solely on the transaction data you provide. We do not know your full financial position, residency status, other income sources, or individual circumstances. Always verify your tax position with a qualified tax adviser or accountant before filing your Self Assessment return.
HMRC rules and calculation accuracy
Polyconomic applies HMRC's published rules for cryptocurrency disposals, including same-day matching, the 30-day rule, and the share identification pool. We make every effort to apply these rules correctly and update the service as HMRC guidance evolves.
However, HMRC's treatment of cryptocurrency is a developing area of tax law. New guidance, tribunal decisions, and legislative changes may affect how particular transactions should be treated. Polyconomic cannot guarantee that every type of transaction, DeFi activity, or edge case is handled with complete accuracy. HMRC makes the final determination of your tax liability, not us.
Your responsibility for the data you provide
The accuracy of our output depends entirely on the accuracy and completeness of the transaction data you import. We cannot verify that the data is correct, complete, or that all your transactions have been included. Missing transactions, incorrect dates, wrong cost basis figures, or incomplete records will produce incorrect results.
You are responsible for ensuring that all transactions are accurately recorded before relying on the output. If you have complex DeFi positions, cross-chain transactions, or unclear historical records, we strongly recommend working with a specialist accountant.
No professional relationship
Using Polyconomic does not create a client-adviser relationship between you and us. We are a software company providing a calculation tool, not a regulated tax or financial services firm. We are not authorised or regulated by HMRC, the Financial Conduct Authority (FCA), or any professional accounting body.
Staking, DeFi, and complex transactions
HMRC has published guidance on some aspects of DeFi and staking, but many areas remain unclear or subject to ongoing development. Our handling of these transaction types is based on current HMRC guidance and reasonable interpretation where guidance is absent. This is an area where professional advice is particularly advisable before filing.
Limitation of liability
To the fullest extent permitted by UK law, Polyconomic Ltd is not liable for any tax liability, penalties, interest, fines, or other financial loss arising from your use of this service or reliance on its output. Our total liability is limited as set out in our Terms of Service.
Changes to this disclaimer
We may update this disclaimer as HMRC guidance evolves or as the scope of the service changes. The date at the top of this page shows when it was last updated.
Contact
If you have questions about what this service can and cannot do, please email us at hello@polyconomic.com. We are happy to explain what we cover before you rely on our output.