Checklist · MTD ITSA

MTD ITSA readiness checklist for firms and landlords.

Use this checklist to turn MTD ITSA from a vague deadline into an operating plan: who is in scope, what records need digitising, which software can file, how the quarterly cadence runs, and where human review sits before submission.

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Last updated: 12 June 2026 · 6 min read

The short answer

To get ready for MTD ITSA, first identify who is in scope using gross income, then set up digital records, choose compatible software, create a quarterly review cadence, agree who approves submissions, and update fees or engagement terms before the first deadline. The biggest risk is not the software alone; it is leaving client records, review responsibility and fee conversations until the quarter is already closing.

The checklist

AreaActionEvidence to collect

ThresholdsIdentify clients or taxpayers with combined gross self-employment and UK property income above the relevant threshold.2024-25 Self Assessment data, client income reports, rental schedules and sole-trader turnover.

Digital recordsConfirm every income and expense transaction can be held as a digital record, not reconstructed at year end.Bank feeds, receipt images, letting-agent statements, invoices, mileage logs and source documents.

SoftwareChoose MTD-compatible software for Income Tax updates and confirm current recognition status before live filing.GOV.UK software finder, vendor status page, engagement records and pilot notes.

Quarterly cadenceCreate a quarterly workflow with internal cut-off dates before each HMRC deadline.Quarterly calendar, client reminders, review queue, approval log and submission receipt.

Review controlsDefine who reviews income, expenses, adjustments and final approval before submission.Named reviewer, exception queue, approval trail and responsibility split.

FeesReprice affected clients for the quarterly operating model before the first deadline creates urgency.Engagement letter variation, fee schedule, client comms and acceptance record.

For accountancy and bookkeeping firms

Firms should turn the checklist into a client-cohort exercise. Split the book into in-scope, next-wave and out-of-scope clients, then assign each cohort a communication plan, software migration path and fee model. The operational question is not just “can we file?” It is whether the firm can run the same quarterly process repeatedly without eroding margin.

Run the gross-income test across the client book.
Create a Cohort A migration list and review owner.
Standardise receipt capture and missing-information chasing.
Update engagement letters for quarterly work.
Set a 14-day internal buffer before each HMRC deadline.

For landlords and sole traders

Landlords and sole traders should focus on digital records first. If rent, expenses, invoices and bank records are not captured during the quarter, the software choice will not rescue the workflow at deadline time. The cleaner the source records, the easier each quarterly update becomes.

Confirm gross property and sole-trader income.
Separate income and costs by property or income source.
Keep receipts and invoices digitally as they happen.
Agree whether you or your accountant reviews each update.
Keep a record of every submission and HMRC receipt.

Where SmartBooks fits

SmartBooks is built around the part of MTD ITSA that creates the most friction: collecting, classifying and reviewing records before each quarter closes. Smart Inbox captures email, WhatsApp, mobile, scan and upload documents, then routes only missing information and exceptions to human review.

FAQ

Who should use this MTD ITSA checklist?

UK accountancy firms, bookkeeping firms, landlords and sole traders preparing for Making Tax Digital for Income Tax Self Assessment. Firms can use it as a client-segmentation and workflow checklist; landlords can use it to understand what records and software they need.

What is the most urgent MTD ITSA task?

Confirm who is in scope using gross income, not profit. Once the affected cohort is clear, software, digital-record setup, fee changes and quarterly deadlines become much easier to plan.

Does this checklist replace tax advice?

No. It is an operational checklist, not personal tax advice. Check each taxpayer's facts against HMRC guidance and professional advice before relying on it for a specific filing decision.

MTD ITSA checklist

Turn the checklist into a working SmartBooks pilot.

Book a 15-minute demo if you run a firm, or join the waitlist if you are preparing your own records for MTD ITSA.

Running a firm? Book a 15-minute demo.