MTD Final Declaration for Landlords: How the 2026/27 Year-End Tax Return Works

What is the MTD final declaration for landlords?

“MTD final declaration” is the phrase many landlords use for the final year-end submission under Making Tax Digital for Income Tax. HMRC’s current guidance describes this as using MTD-compatible software to complete and submit your tax return after you have made the adjustments to your self-employment and property income and expenses.

For an in-scope landlord, it replaces the old practical routine of pulling together records once a year and filing SA100 plus SA105 through the usual Self Assessment route. Self Assessment does not disappear. The difference is that your property records, quarterly updates, annual adjustments and final tax return all run through compatible software.

The final declaration is not a fifth quarterly update. The quarterly updates are summaries of income and expenses. The final submission is where you finalise the taxable position, include non-property information and accept the overall tax calculation.

• Quarterly updates tell HMRC your property income and expense totals during the year.
• The final MTD tax return confirms the final taxable figures for the year.
• Property adjustments sit between the fourth quarterly update and the final submission.
• Other income, gains, reliefs and tax information are added before you submit.

Who has to do this in 2026/27?

You need to use MTD for Income Tax from 6 April 2026 if you are an individual landlord or sole trader registered for Self Assessment, you have property or self-employment income, and your qualifying income for the relevant test year is more than £50,000.

Qualifying income means gross income from self-employment and property before expenses. Employment income, dividends, pensions and partnership profit shares do not count towards the MTD qualifying income threshold.

The later thresholds are already set. If your qualifying income is more than £30,000 for 2025/26, MTD starts from 6 April 2027. If it is more than £20,000 for 2026/27, MTD starts from 6 April 2028.

You do not start using MTD until after you have submitted your first Self Assessment tax return. Limited company landlords are outside MTD for Income Tax, although companies may have separate MTD obligations for VAT.

The 2026/27 landlord timeline: from quarterly updates to final submission

For 2026/27, the tax year runs from 6 April 2026 to 5 April 2027. Standard MTD update periods follow the tax year, and the quarterly update deadlines are 7 August 2026, 7 November 2026, 7 February 2027 and 7 May 2027.

Each quarterly update is cumulative from the start of the tax year to the end of that update period. Your software totals the digital records for the relevant property income and expense categories and sends those totals to HMRC. HMRC does not receive every individual receipt or invoice.

After the fourth quarterly update, you review the full-year position, make property adjustments and complete the tax return. For 2026/27, the final MTD tax return deadline is 31 January 2028.

For a fuller date-by-date checklist, use the 2026/27 MTD quarterly deadline calendar.

Where property adjustments fit

Property adjustments are made after your fourth quarterly update and before you submit the final tax return. This is where you turn bookkeeping totals into taxable property figures.

Examples include removing private or non-allowable expenses, correcting category totals, claiming reliefs or allowances, making accounting adjustments for accruals and prepayments if you use traditional accounting, and dealing with residential finance costs correctly.

Cash basis is the default accounting method for property income and self-employment income. If you use cash basis, many accruals and prepayment adjustments are not needed. If you use traditional accounting, your software should let you adjust annual category totals rather than editing every individual transaction.

Common landlord adjustments include repairs wrongly posted as improvements, agent fees missed from the quarter, personal use of a phone or mileage claim, insurance straddling the tax year, bad debts, replacement domestic items and finance costs. Our allowable expenses for landlords 2026 guide is a useful cross-check before you finalise.

• Correct errors in digital records when you become aware of them during the year.
• Use the final stage for annual tax adjustments that do not belong in a quarterly update.
• Do not deduct residential mortgage interest as an ordinary expense for an individual residential let.
• Keep supporting documents even though HMRC does not receive each receipt in the quarterly update.

What else is added in the final MTD tax return?

The landlord final submission is not limited to rental figures. Before you submit, your software must bring together the rest of the information needed for your Self Assessment tax return.

This may include employment income, pension income, savings interest, dividends, student loan information, partnership profit share, capital gains, Gift Aid, pension contributions, High Income Child Benefit Charge information and other reliefs or charges relevant to you.

Some information may already be held by HMRC or pulled into the calculation. You still need to check it. The final tax return is your declaration that the overall return is complete and correct to the best of your knowledge.

If you sold a rental property during the year, remember that MTD for Income Tax does not replace UK property Capital Gains Tax reporting obligations. For disposals, check your CGT position separately using the CGT calculator or a qualified adviser.

• Property income and expenses come from your digital MTD records.
• Non-property income is added before the final return is submitted.
• Reliefs and allowances are claimed at the final stage where relevant.
• The final calculation drives the amount due, subject to payments on account already made.

Mistakes landlords should avoid

The biggest mistake is assuming that the fourth quarterly update finishes the tax year. It does not. You still have to review, adjust and submit the final MTD tax return by the Self Assessment deadline.

The second mistake is leaving corrections until January. If you spot an error in your digital records during the year, HMRC expects you to correct the records when you become aware of it. If you need a step-by-step fix, use how to correct an MTD quarterly update as a landlord.

The third mistake is confusing property categories. MTD uses the same income and expense categories as Self Assessment, so the quality of your bookkeeping categories matters. Bad categorisation means extra work at final declaration time.

There is a first-year soft landing for quarterly update penalties in 2026/27: HMRC says no penalty points will apply for late quarterly updates for that tax year. But you still need to keep digital records and send all required quarterly updates before you can submit the final tax return.

• Do not skip nil quarters: if there is no income or expense in a period, a quarterly update is still required.
• Do not post capital improvements as repairs without checking the tax treatment.
• Do not leave residential finance costs buried in ordinary expense categories.
• Do not assume your accountant can fix everything without digital records and supporting evidence.
• Do not miss the 31 January final tax return and payment deadline.

Step by step

1. 1

   Keep digital property records from the start of the MTD year

   From 6 April 2026 if you are in the first MTD wave, record rental income and property expenses in compatible software. Keep invoices, statements and receipts as supporting evidence.

2. 2

   Send the four quarterly updates

   Submit the cumulative property income and expense totals by 7 August 2026, 7 November 2026, 7 February 2027 and 7 May 2027. These are summaries, not tax returns.

3. 3

   Correct known errors before finalising

   If you spot missing rent, duplicated expenses or wrong categories, correct the digital records or annual totals in the software. Do not wait until submission day.

4. 4

   Make annual property adjustments

   After the fourth update, adjust the full-year property figures for disallowable costs, reliefs, accruals or prepayments where relevant, capital allowances, property allowance decisions, Rent a Room relief and residential finance cost treatment.

5. 5

   Add other income, gains and reliefs

   Complete the rest of the Self Assessment information in your MTD software, including employment, pensions, interest, dividends, capital gains, student loans and relevant relief claims.

6. 6

   Review the calculation and submit by 31 January

   Check the final calculation, keep a copy of the submission record and submit the 2026/27 MTD tax return by 31 January 2028. Pay any balancing payment and first payment on account by the same date if due.

A worked example

Amira is an individual landlord in the first MTD wave for 2026/27. Her four quarterly updates have sent full-year rental income and expense totals, but she finds two property adjustments before submitting the final MTD tax return.

This shows the role of the final declaration: the quarterly updates gave HMRC the running totals, but the final MTD tax return is where Amira corrects the annual property figures and enters finance costs in the right place before the overall tax calculation.

Frequently asked questions