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MTD - HMRC Compliant Module · How-to guide

Choose self, agent or hybrid filing mode

Select the filing workflow that matches client self-filing, accountant filing or client-and-accountant review. The guide then takes you through the correct route, the checks to complete before making changes, the workflow in order, and the evidence to review afterwards.

Audience: Administrators, finance managers and authorised tax staffModule v1.0.0Code-backed
Jump to steps
Where to goSetup → Modules / Tax Centre → Settings
Before you startRequired access: Administrator or the relevant MTD settings/access permission. Work on the correct tenant and taxpayer profile. Reconcile the underlying Accounting & Bookkeeping records before relying on prepared tax totals.

What you’ll accomplish

Select the filing workflow that matches client self-filing, accountant filing or client-and-accountant review. The MTD module stores tax profiles, HMRC authority, obligations, frozen filing snapshots, approvals and audit evidence, while Accounting remains the primary financial record system.

Follow these steps

  1. Go to Setup → Modules / Tax Centre → Settings.
  2. Verify you are working on the correct taxpayer profile and tenant before you choose self, agent or hybrid filing mode.
  3. Follow the on-screen workflow for choose self, agent or hybrid filing mode and keep the underlying Accounting records unchanged unless a genuine bookkeeping correction is required.
  4. Check any blocker or warning before continuing; a blocker must not be bypassed by manually re-keying tax totals.
  5. Keep client approval, professional review and HMRC authority requirements separate and complete each one that applies to the filing mode.
  6. Use the Audit Trail and frozen snapshot details to verify what was prepared, approved and submitted.

Checks before you continue

Taxpayer profileAlways verify the correct profile, tax regime and masked identifiers before preparing or submitting.
Tenant contextTax records, HMRC authority and audit history must stay inside the current Britixo tenant/runtime.
Accounting sourceSource tax figures must come through the verified Accounting digital-link adapter with transaction lineage.
Approval stateThe exact frozen snapshot must carry the approvals required by its filing mode before HMRC submission.

Technical basis for this guidance

This guide was checked against mtd_hmrc_compliant.php; controllers/Mtd_hmrc_compliant.php; views/admin/settings.php; install.php. The user instructions describe only behaviour exposed or enforced by the supplied module. Internal secrets, encrypted token values and database identifiers are intentionally not shown to ordinary users.

Compliance and operational boundaries

  • Britixo Accounting & Bookkeeping remains the authoritative ledger; the MTD module is a tax preparation/submission layer.
  • Government Gateway usernames and passwords must never be entered into or stored by Britixo.
  • A tax filing must not proceed when transaction-level digital lineage cannot be proven.
  • Agent OAuth authorises the software connection only; the supplied v1.0.0 module does not create the legal HMRC client-agent relationship. Establish/verify that relationship separately through the appropriate HMRC process.
Accounting interlinkFor transaction creation, tax mappings, banking, reconciliation, journals, reports and source-document corrections, use the Accounting & Bookkeeping Help Centre. Correct the bookkeeping source first; do not type replacement totals into MTD merely to clear an error.
Accounting & BookkeepingOpen related guidanceAll MTD - HMRC Compliant guidesOpen related guidance