Making Tax Digital for Income Tax: The Complete 2026 Guide for Landlords and Sole Traders

Making Tax Digital for Income Tax (MTD IT) is the biggest change to how self-employed people and landlords report their income in over 25 years. From 6 April 2026, anyone with qualifying income above £50,000 will need to keep digital records, send HMRC four quarterly updates a year, and submit a new year-end final declaration — all through MTD-compatible software. The traditional once-a-year Self Assessment return, for those in scope, is on its way out.

If that sounds like a lot to take in, you are not alone. Many sole traders and landlords are still uncertain about whether they are affected, when they need to start, and what happens if they get it wrong. This guide pulls together everything you need to know — the dates, the thresholds, the new penalty system, and the practical steps you can take now to avoid a stressful transition.

By the end of this article you should have a clear picture of where you stand, what changes when, and where to focus first. If you are already ahead of the curve, you can use this as a refresher. If you have been putting MTD to one side, this is a good moment to start planning.

What is Making Tax Digital for Income Tax?

Making Tax Digital for Income Tax is a new way of reporting self-employment and property income to HMRC. Instead of submitting one Self Assessment return at the end of the tax year, people within MTD IT will need to do three things.

First, they must keep digital records of their business income and expenses using software that is compatible with HMRC's systems. HMRC does not provide the software itself — you choose from a list of approved providers on GOV.UK. Second, they must send HMRC a quarterly update summarising income and expenses for each three-month period. Fourth updates a year, rather than one. Third, they must submit a final declaration after the tax year ends, which replaces the traditional Self Assessment return and brings in any adjustments, reliefs, and other income sources.

Alongside MTD IT, the basis period reform has already moved all unincorporated businesses onto a tax-year basis (6 April to 5 April). Together, these two changes represent the biggest overhaul of income tax administration since self-assessment was introduced.

Who has to join, and when?

MTD IT is being rolled out in phases based on qualifying income. The phased approach gives lower-earning taxpayers more time to prepare, and it gives HMRC and software providers time to iron out any issues before the full population is brought in.

Start Date	Qualifying Income Threshold	Who is affected
6 April 2026	Over £50,000	Sole traders and landlords
6 April 2027	Over £30,000	Sole traders and landlords
6 April 2028	Over £20,000	Sole traders and landlords (announced Spring Statement 2025)
TBC	—	Partnerships (date not yet announced)

Qualifying income means your combined self-employment turnover plus gross property income, before deducting expenses. PAYE salary, dividends, pensions and partnership profits are excluded at this stage. If you have both a trade and a rental property, the combined figure is compared to the threshold.

HMRC will use your 2024/25 Self Assessment return — due by 31 January 2026 — to decide whether you must join on 6 April 2026. So the return you file in early 2026 effectively determines your MTD fate for the following year.

The digital start date

Your "digital start date" is the point from which you must begin keeping digital records. For existing businesses that were trading before 6 April 2025, this is simply 6 April 2026 if you are over the £50,000 threshold.

For newer businesses, the rules are slightly different. If you start trading after 5 April 2025, your digital start date is 6 April in the tax year following the filing deadline for your first Self Assessment return. In practice, this gives new businesses a useful grace period to establish themselves before MTD kicks in.

Once you are in MTD IT, you stay in — even if your income later drops below the threshold. There is an escape hatch from year four onwards: you can claim exemption if your qualifying income has been below the threshold for each of the three preceding years.

Quarterly updates: the new rhythm

The heart of MTD IT is the quarterly update. Four times a year, you send HMRC a summary of your income and expenses, broken down by category. The figures are cumulative — each update runs from the start of the tax year to the end of that quarter.

The default standard quarters run from 6 April. You can elect to use calendar quarters instead (1 April to 30 June, and so on) if that fits your bookkeeping better, but the election must be made before your first update for the year.

Quarter	Standard Period	Deadline
Q1	6 April – 5 July	7 August
Q2	6 July – 5 October	7 November
Q3	6 October – 5 January	7 February
Q4	6 January – 5 April	7 May

You can submit up to 10 days before the quarter ends if you are confident no more transactions will come in. After the tax year ends, you have until 31 January to submit your final declaration — the document that replaces your old Self Assessment return.

The new penalty system

One of the biggest shifts alongside MTD is a completely new approach to penalties, designed to be fairer and more proportionate. Late submissions now work on a points-based system, similar to driving licence points. Each missed quarterly update or final declaration earns you one point. Once you hit the threshold — four points for quarterly filers — you get a £200 financial penalty, and another £200 for every subsequent late submission.

Points expire after 24 months, but only if you are below the threshold. To reset fully to zero you need 12 months of on-time submissions and all outstanding returns filed. There is also a soft landing for 2026/27: no points will be charged for late quarterly updates in the first year for taxpayers joining on 6 April 2026, though this easement does not apply to late final declarations or late payments.

Late payment penalties have also been restructured. From day 15 onwards you face a 3% penalty on the outstanding tax, another 3% at day 30, and then a daily 10% annual rate beyond that. The Budget 2025 announcement confirmed these rates will rise further from April 2027, with the first penalty moving from 3% to 4%.

How to prepare

The single most useful thing you can do right now is look at the numbers on your most recent tax return. If your combined self-employment turnover and gross property income is anywhere near £50,000, assume you are in from April 2026 and plan accordingly.

Practical steps to take in the months ahead:

• Choose MTD-compatible software. Check the list at "Find software compatible with MTD for Income Tax" on GOV.UK. Tools like LedgerLet are designed specifically for UK landlords and sole traders who need a straightforward route into MTD compliance.
• Separate business and personal finances. A dedicated business bank account makes digital record-keeping dramatically easier and reduces the risk of errors in quarterly updates.
• Get into the habit of recording transactions promptly. MTD is unforgiving of the shoebox-of-receipts approach — you need clean, categorised data every quarter.
• If you use an accountant, talk to them early. Many firms are already restructuring their workflows around quarterly deadlines, and capacity will tighten as April 2026 approaches.
• Consider the tax-year basis. If your accounting year does not already end on 31 March or 5 April, aligning it now will simplify both MTD and your year-end reporting.

Frequently Asked Questions

Q: Do I have to join MTD if I only have property income? A: Yes, if your gross rental income is above the relevant threshold — £50,000 from April 2026, £30,000 from April 2027, £20,000 from April 2028. Landlords are treated the same way as sole traders for MTD IT purposes.

Q: What counts as "qualifying income"? A: Qualifying income is the combined total of your self-employment turnover and gross property income, measured before expenses. PAYE earnings, dividends, pensions, and partnership profits are excluded from the threshold calculation.

Q: What happens if I have multiple businesses or properties? A: All your self-employment and property income counts towards the threshold. If the combined figure crosses it, every qualifying income source must be reported through MTD. Each source is signed up separately, but you only get one points total for late submissions.

Q: Can I still use a spreadsheet to keep my records? A: Not on its own. You can use spreadsheets if they are linked to MTD-compatible bridging software that submits the data in the required format. Most landlords and sole traders find it simpler to use cloud accounting software designed for MTD from the ground up.

Q: What if I am digitally excluded or cannot use software? A: You can apply to HMRC for an exemption on grounds of age, disability, location, religious beliefs, or any other practical reason why digital compliance is impossible. If you are already exempt from MTD for VAT on digital exclusion grounds, you do not need to apply again for MTD IT.

Conclusion

MTD for Income Tax is a major change, but it is not a cliff edge. The phased rollout, the soft landing on penalties, and the growing ecosystem of compatible software all give landlords and sole traders room to adapt at a sensible pace. The businesses that come through it best will be the ones that start early, get their digital records in good shape, and use the transition as an opportunity to tighten up their bookkeeping overall. The sooner you begin, the smoother April 2026 will feel.