Authorising software for MTD Income Tax
Plan the HMRC authorisation step for MTD Income Tax software with user access, income sources and accountant roles in place.
MTD Income Tax is now a live planning issue for people signing up or volunteering for MTD Income Tax. The authorisation step is short when the Government Gateway, Self Assessment record and software setup all match. This guide narrows the job to software authorisation with HMRC, so the business can move from annual clean-up to a repeatable quarterly review.
For wider context, use Making Tax Digital and Software . If the topic affects a filing deadline, software choice or tax treatment, confirm the live position before acting. The workflow below is designed to keep the evidence in one place so the owner, bookkeeper and accountant can all review the same record.
Official point to verify
GOV.UK says people required to use MTD for Income Tax from 6 April 2026 should sign up, must be registered for Self Assessment and must have submitted a tax return in the last two years. Check the current wording in GOV.UK MTD Income Tax sign up guidance before making a binding filing, software or tax decision.
What to control
| Area | Control | Why it matters |
|---|---|---|
| Self Assessment | Confirm the user is registered and has recent filing history | Sign-up depends on the taxpayer record |
| Income sources | Add active trades and property income correctly | Software needs to connect to the right obligations |
| Agent role | Decide whether the agent signs up or the owner does | Duplicated setup can cause confusion |
| Access test | Check the software can see HMRC obligations | A connected account should be tested before the deadline |
Review routine
Build the routine around monthly bookkeeping rather than waiting for the quarterly deadline. Reconcile the bank, clear uncategorised transactions, review owner drawings or property transfers, then let the software produce the update totals. The accountant should review exceptions, not rebuild the ledger.
A useful review note should answer three questions: what source evidence was used, what judgement was applied, and who approved the treatment. Keep that note beside the transaction or period report rather than in a separate inbox.
Common mistakes
- Trying to authorise before the Self Assessment record is ready
- Using the wrong Government Gateway account
- Leaving the accountant outside the authorisation plan
The best prevention is a short, repeated checklist. If a control is too complicated to run every month or quarter, it will probably fail when the deadline is close.
How ReAI helps
ReAI helps by keeping invoices, bank imports, receipts, review notes and accountant access in one place. That makes quarterly MTD work a by-product of ordinary bookkeeping instead of a separate spreadsheet exercise. For hands-on help with setup, see Accounting Assistance for Small Businesses .
Summary
Treat Authorising software for MTD Income Tax as a recurring accounting control, not a one-off admin task. Put the source data, review owner, exception list and submission evidence in the same system before the deadline arrives. That makes compliance work easier to check and much less dependent on memory.