MTD for New Businesses and First-Time Landlords

Starting a Business or Becoming a Landlord? When MTD Applies to You

Last updated: February 2026

Making Tax Digital for Income Tax does not apply from the day you start trading or let your first property. There is a gap between beginning a business and entering MTD, and understanding that gap is essential for planning your record-keeping and software setup. This article explains exactly when MTD obligations kick in for new sole traders and first-time landlords, how HMRC treats part-year income, and what you should do in the months before your first quarterly update is due.

MTD does not start on day one

A common misconception is that registering as self-employed or receiving your first rental income immediately brings you into MTD. It does not. HMRC determines whether you fall within MTD based on your qualifying income shown on a submitted Self Assessment tax return. Qualifying income means your combined gross income from self-employment and UK property — not your profit after expenses.

The three MTD phases use these thresholds:

The critical point: HMRC needs a completed Self Assessment return to assess your qualifying income. If you have never filed a Self Assessment return, HMRC has no income figure to measure against the threshold. You cannot be brought into MTD until that data exists.

The practical sequence: from starting up to first MTD quarter

Here is how the timeline works for someone starting a new business or becoming a landlord for the first time:

1. You start trading or receive your first rental income. You must register for Self Assessment with HMRC within specific time limits (by 5 October following the tax year in which you started).
2. You complete your first tax year. The UK tax year runs 6 April to 5 April. If you start trading mid-year, your first tax year ends on the following 5 April.
3. You file your Self Assessment return. The filing deadline is 31 January following the end of the tax year. This return shows HMRC your qualifying income for the first time.
4. HMRC assesses your qualifying income. Based on your return, HMRC determines whether you exceed the relevant MTD threshold.
5. MTD obligations begin from the next 6 April (the start of the following tax year), provided the relevant phase has commenced.

This means there is always at least one full tax year — and often closer to two years — between starting a business and your first MTD quarterly update. For a detailed breakdown of every quarterly deadline once you are within MTD, see our MTD for Income Tax guide.

How HMRC annualises part-year income

If you start trading partway through a tax year, your first Self Assessment return covers fewer than 12 months. HMRC does not simply look at the raw figure on that return. Instead, they annualise your income to estimate what a full year of trading would produce.

Annualisation works by scaling up your part-year income proportionally. If you traded for 6 months and reported gross income of £28,000, HMRC would annualise this to £56,000 (doubling the 6-month figure to represent 12 months). That annualised figure is then compared against the MTD threshold.

This is important because it means you could report a relatively modest figure on your first return yet still be brought into MTD once the income is annualised. Conversely, if your annualised income falls below the threshold, you remain outside MTD even if you expect to earn more in a full year.

HMRC uses annualisation specifically for the purpose of determining MTD entry for part-year trades. Once you have filed a return covering a full 12-month period, the actual gross figure on that return is used without adjustment.

Worked example 1: new sole trader starting in October 2026

James leaves his employment and starts a freelance web design business on 15 October 2026. He registers for Self Assessment by the deadline. His first tax year runs from 15 October 2026 to 5 April 2027 — roughly 5 months and 21 days of trading.

During this period, James invoices £32,000 in gross fees. He files his 2026/27 Self Assessment return in November 2027 (ahead of the 31 January 2028 deadline).

HMRC annualises his income. He traded for approximately 173 days out of a 365-day tax year, so the annualisation calculation is:

£32,000 ÷ 173 × 365 = £67,514 (annualised)

This exceeds the Phase 2 threshold of £30,000 (which applies from 6 April 2027). HMRC determines James falls within MTD. However, because his return is filed during the 2027/28 tax year and HMRC needs time to process the assessment, his MTD obligations begin from 6 April 2028 — the start of the 2028/29 tax year.

James’s timeline looks like this:

James has roughly 18 months from starting his business to his first MTD quarterly update. He should use that time to choose MTD-compatible software, set up digital records, and connect his bank feeds so he is ready well before April 2028.

Worked example 2: first-time landlord buying property in 2027

Priya buys a rental flat in Leeds in June 2027 and receives her first tenant’s rent in July 2027. The property generates gross annual rental income of £18,000. Priya has no self-employment income — her only qualifying income is from property.

Her first tax year of rental income runs from July 2027 to 5 April 2028 (approximately 9 months). She files her 2027/28 Self Assessment return in January 2029.

HMRC annualises her property income. She received rent for roughly 275 days:

£13,500 (actual rent received) ÷ 275 × 365 = £17,918 (annualised)

This falls below the Phase 3 threshold of £20,000 (which applies from 6 April 2028). Priya is not brought into MTD for the 2028/29 tax year. She continues filing annual Self Assessment returns as normal.

However, in her second full year (2028/29), the property is let for the entire 12 months and she receives £19,200 in gross rent. She also takes on a small amount of freelance interior design work, earning £4,500. Her combined qualifying income is now £23,700, which exceeds £20,000. When she files her 2028/29 return in January 2030, HMRC brings her into MTD from 6 April 2030.

The lesson here: if your income is close to a threshold, even modest additional income from a side business or a rent increase can push you over. Monitor your qualifying income each year so you are not caught off guard.

Planning ahead: what to do before MTD starts

Even if MTD is a year or more away, early preparation makes the transition significantly smoother. Here is a practical checklist:

Set up digital record-keeping from day one

You are not required to use MTD-compatible software before you enter MTD, but starting with it from the outset means your records are already digital when the obligation arrives. Migrating from spreadsheets or paper records into software mid-year is disruptive and error-prone. Cloud accounting software such as Xero, FreeAgent or QuickBooks also gives you real-time visibility of your income and expenses, which helps you anticipate whether you will cross a threshold.

Understand what counts as qualifying income

Qualifying income is your gross self-employment turnover plus gross UK property income. It is not your taxable profit. A sole trader with £55,000 of gross income and £20,000 of allowable expenses has qualifying income of £55,000, not £35,000. Similarly, a landlord who receives £24,000 in rent but claims £8,000 in mortgage interest and repairs has qualifying income of £24,000. This distinction catches many people out.

Watch out for combined income sources

If you are both self-employed and a landlord, HMRC adds both gross income figures together. A sole trader earning £25,000 who also receives £12,000 in rent has qualifying income of £37,000 — above the Phase 2 threshold. Neither source alone would trigger MTD at that level, but combined they do.

Build quarterly reporting into your routine

Before MTD mandates it, practise reporting your income and expenses on a quarterly basis. This helps you identify gaps in your bookkeeping process, ensures your bank reconciliation stays current, and prevents the year-end scramble that many sole traders experience under annual Self Assessment. If you use cloud software, set a reminder to review and reconcile your accounts at the end of each quarter.

What if your income fluctuates?

New businesses often have unpredictable income. You might have a strong first year followed by a quieter second year, or vice versa. The key rules to understand:

• Entry is based on filed returns. HMRC looks at the qualifying income on your most recent Self Assessment return to determine whether you cross the threshold.
• Once in, you stay in. If your income drops below the threshold after you have been brought into MTD, you remain within the system. There is no mechanism to opt out.
• Voluntary sign-up is available. If your income is below the threshold but you want to start quarterly digital reporting early, you can sign up voluntarily. This can be useful for testing your software and processes before the obligation becomes mandatory.

For businesses with fluctuating income near a threshold boundary, it is worth discussing your position with an accountant. The timing of when income is invoiced and received can affect which tax year it falls into, and professional advice ensures you understand your obligations accurately.

VAT registration: a separate consideration

New businesses also need to be aware of VAT obligations, which are entirely separate from MTD for Income Tax. The current VAT registration threshold is £90,000 (from 1 April 2024). If your taxable turnover exceeds this amount over any rolling 12-month period, you must register for VAT and comply with MTD for VAT, which has been mandatory since April 2022.

A new business could therefore face both MTD for VAT and MTD for Income Tax simultaneously if turnover is high enough. The two systems operate independently — different software submissions, different deadlines, different penalties — but using the same accounting software for both simplifies compliance considerably.

Frequently asked questions

I started my business last month. Do I need to file quarterly updates now?

No. MTD obligations do not begin until HMRC has assessed your qualifying income from a filed Self Assessment return. Your first quarterly updates will not be due until at least the tax year after you file your first return, and only if your qualifying income exceeds the relevant threshold at that point.

Does HMRC always annualise part-year income?

HMRC annualises income for part-year trades when determining MTD entry. If your first Self Assessment return covers fewer than 12 months, the reported income is scaled up to a 12-month equivalent. Once you have a full-year return, the actual figure is used.

Can I sign up for MTD voluntarily before I am required to?

Yes. HMRC allows voluntary sign-up for MTD for Income Tax. This can be useful if you want to get familiar with the quarterly reporting process before it becomes mandatory. Voluntary participants follow the same rules and deadlines as mandated taxpayers.

What if I have both self-employment income and rental income but each is below the threshold?

Qualifying income is the combined gross total of self-employment and UK property income. If your self-employment turnover is £18,000 and your gross rental income is £14,000, your qualifying income is £32,000 — above the Phase 2 threshold of £30,000. Both sources are added together for the assessment.

I am a first-time landlord with income below £20,000. Will I ever need MTD?

Currently, the lowest threshold is £20,000 (Phase 3, from 6 April 2028). If your gross rental income stays below £20,000 and you have no self-employment income, you will not be brought into MTD under the announced phases. However, the government could lower the threshold further in future. Check the MTD FAQ page for the latest position.

Sources

• GOV.UK: Making Tax Digital for Income Tax
• GOV.UK: Sign up your business for Making Tax Digital for Income Tax
• GOV.UK: How you pay Income Tax
• GOV.UK: Register for Self Assessment