If you have not yet checked if and when you need to use Making Tax Digital (MTD) for Income Tax, you should do so as a matter of urgency. This is because from April 2026 the way many individuals report their tax to HMRC will change significantly. MTD for Income Tax represents a move away from the traditional annual self-assessment process towards a more frequent, digital approach, with taxpayers required to manage their affairs through an online tax account using compatible software.

From 6 April 2026, MTD for Income Tax will apply to self-employed individuals and landlords with qualifying income of more than £50,000 a year. A year later, from April 2027, this will extend to those with qualifying income between £30,000 and £50,000. Qualifying income is broadly the total income received from self-employment and property in a tax year, including income from multiple trades or rental properties. Other sources of income, such as employment income taxed under PAYE, dividends, pensions or partnership income, are excluded from this calculation.

Those within the scope of MTD for Income Tax will be required to keep digital records of their income and expenses and submit quarterly updates to HMRC. These updates provide summaries of income and costs and are intended to give HMRC a clearer picture of taxable income throughout the year. A final declaration will still be required after the end of the tax year, with any tax due payable by the following 31 January. A new points-based penalty system will also apply for late submissions and payments.

If you are unsure whether or when MTD for Income Tax will apply to you, or you would like help preparing for the changes, we would be happy to help.

If your business has transitional profits from basis period reform, spreading over five years may reduce the cash flow impact, but it is important to understand the deadlines.

The self-employed basis period reform has changed the way trading income is allocated to tax years. Under these reforms, the basis of assessment moved from a current year basis to a tax year basis.

As a result, all sole traders and partnership businesses are now required to report their profits on a tax year basis. This change fully came into effect from the self-assessment return due by 31 January 2025, covering the 2023–24 tax year.

Under the old rules, businesses could have overlapping basis periods. This sometimes resulted in profits being taxed twice, with corresponding overlap relief usually given when the business ceased. The move to a tax year basis removed the basis period rules and prevented the creation of any new overlap relief.

The spreading rules for the payment of transitional profits are still available. By default, transition profits are spread evenly over five tax years, from 2023–24 to 2027–28, helping to ease cash-flow pressures. Taxpayers can also elect to accelerate the taxation of transition profits if they wish, but spreading continues to apply automatically unless an election is made.

If your business ceases on or before 5 April 2027, any transition profit remaining after overlap relief that has not yet been taxed must be brought into charge in the final year of trading.

With the balancing payment and first payment on account both due on 31 January 2026, it is worth checking your options early if funds are tight.

The final balancing payment for the 2024–25 tax year is due by 31 January 2026, which is also the deadline for filing your self-assessment tax return. This payment will settle any remaining tax owed for the year after taking account of payments on account already made.

In addition to the balancing payment, many self-assessment taxpayers will also have a first payment on account for the 2025–26 tax year due on the same date, which can make January a particularly challenging month for cash flow.

If you are struggling to meet the tax payments due by 31 January 2026 deadline, it is important to take action early, as there are options available to help manage the payment.

Taxpayers with self-assessment liabilities of up to £30,000 can use HMRC’s online Time to Pay (TTP) service to set up instalment payments. This can be done without speaking directly to an HMRC adviser and is available up to 60 days after the payment deadline.

To use the online Time to Pay service, you must:

• Have no outstanding tax returns
• Have no other unpaid tax debts
• Have no existing HMRC payment plans

If you do not meet these criteria, it may still be possible to agree a bespoke Time to Pay arrangement by contacting HMRC directly. These arrangements are assessed on a case-by-case basis and are usually based on your personal or business financial position.

HMRC will generally agree to extended payment terms where they believe the tax can be paid in full over time. However, if HMRC considers that delaying payment will not resolve the issue, they may seek immediate payment and can take enforcement action if the debt remains unpaid.

If you anticipate difficulty in paying your January 2026 tax bill, please do not ignore the problem. Please let us know and we can help you understand what options are available to you.

If one partner earns under £12,570, you could transfer part of their unused personal allowance and cut your tax bill by up to £252 a year.

The Marriage Allowance applies to married couples and civil partners where one partner does not pay Income Tax, usually because their income is below the personal allowance. For the 2025–26 tax year, this means the lower-earning partner must earn less than £12,570.

The allowance means the lower-earning partner can transfer up to £1,260 of their unused personal allowance to their spouse or civil partner. This transfer is only permitted if the recipient is taxed at no more than the basic rate of Income Tax. This means the higher-earning partner must usually have an income between £12,571 and £50,270. For those living in Scotland, this generally applies where income does not exceed £43,662, which is the point at which the Scottish higher rate begins.

By using the allowance, up to £1,260 of unused personal allowance can be transferred, resulting in a tax saving of up to £252 per year for the higher-earning partner, calculated at 20% of the amount transferred.

If you meet the eligibility criteria and have not yet claimed the Marriage Allowance, you can backdate your claim for up to four previous tax years. At present, claims can be backdated to the 2021–22 tax year, meaning you may be able to claim for 2021–22, 2022–23, 2023–24, 2024–25 and the current 2025–26 tax year. This could result in a total tax saving of up to £1,260 across those years. Claims, including backdated claims and applications for the current year, can be made online via GOV.UK.

From April 2026, Making Tax Digital for Income Tax (MTD for IT) will become mandatory for many self-employed persons and landlords, marking a significant change in how they manage their tax affairs. The new regime is designed to modernise the tax system by requiring taxpayers to interact with HMRC through an online tax account, rather than relying solely on an annual self-assessment return.

Initially, MTD for IT will apply to individuals with qualifying income of more than £50,000 a year from self-employment and/or property. From 6 April 2027, the scope will widen to include those with income between £30,000 and £50,000. Alongside this, a new points-based penalty system will be introduced for the late filing and late payment of MTD for IT liabilities.

Under MTD for IT, affected taxpayers will need to keep digital records of their income and expenses using compatible software. Instead of reporting everything once a year, they will be required to send quarterly updates to HMRC, providing a summary of their business or property income and costs. These updates are not tax bills, but they are intended to give HMRC a clearer picture of income throughout the year. A final declaration will still be required after the end of the tax year, with any tax due payable by 31 January following the year end.

Qualifying income is a key concept under MTD for IT. It is broadly the total income earned in a tax year from self-employment and property income, including income from multiple trades or rental properties. Other sources of income reported on a tax return, such as employment income under PAYE, dividends, pensions or partnership income, does not count towards this threshold.

If you are unsure how MTD for IT will affect you, or would like any support preparing for the change, we would be happy to help.