Terms & Conditions

AI-Led Bookkeeping

The Service uses artificial intelligence (including large language models) to categorize transactions, extract data from receipts, and suggest tax treatments.

Human Verification

The Service operates on an "AI-led, human-verified" model. While the AI automates suggestions, you remain strictly and legally liable for the accuracy, completeness, and validity of all financial data and tax returns submitted to HM Revenue & Customs (HMRC) or Companies House through the Service.

TrueLayer Integration

You must connect a valid UK business bank account via our Open Banking partner, TrueLayer.

Immutability of Records

You acknowledge and agree that raw bank statement lines imported into xontax are permanently immutable. You cannot manually edit, delete, or alter raw bank data within the platform. This is to ensure a perfect, tamper-proof audit trail.

One-to-One Mapping

Every transaction must map to exactly one explanation, bill, or invoice.

Direct Submissions

xontax interfaces directly with HMRC APIs for VAT and Income Tax Self-Assessment (ITSA).

MTD Deadlines

Where the product shows return due dates, those dates come from data retrieved from HMRC (for example obligation due dates after sync), not from xontax's own tax calendar. It is your sole responsibility to ensure that your bank feed is active, exceptions are cleared, and submissions are executed before HMRC's deadlines.

Late Penalties

xontax accepts no liability for late filing penalties, interest, or surcharges imposed by HMRC due to your failure to review and submit data on time, or due to disconnected Open Banking feeds.

Termination

You may cancel your subscription at any time. Upon cancellation, your TrueLayer bank feed and HMRC connection will be immediately revoked.

Data Portability

Upon termination, you are entitled to a full export of your transaction history and uploaded documents. You remain responsible for retaining your accounting records for the statutory 6-year period required by HMRC.

Limitation of Liability

To the maximum extent permitted by UK law, xontax shall not be liable for any indirect, incidental, special, consequential, or punitive damages, including loss of profits, data, or goodwill, arising from:

• Errors or omissions in AI-generated tax suggestions (e.g., Capital Allowances, R&D credits, VAT treatments).
• Temporary downtime of third-party APIs (TrueLayer, Companies House, HMRC, Anthropic, AWS, etc.).

Indemnification

You agree to indemnify and hold xontax (Matters2 Ltd) harmless against any claims, fines, or investigations by HMRC arising from your use of the platform.