For the 2026/27 tax year, the most significant HM Revenue & Customs (HMRC) news is the mandatory implementation of Making Tax Digital (MTD) for Income Tax, starting April 6, 2026. This requirement applies to self-employed individuals and landlords with a qualifying gross income exceeding £50,000, shifting them from annual paper returns to quarterly digital updates. Additionally, HMRC has announced notable shifts in the tax landscape, including a rise in the higher-rate tax threshold to £55,000 and a new cap on Agricultural and Business Property Relief for Inheritance Tax. While the personal allowance remains frozen at £12,570, the introduction of the “Mephisto” system for automated tax code corrections and the expansion of Child Benefit rates to £27.05 per week for the eldest child highlight a year of transition toward a more digitized and real-time tax administration system.
Making Tax Digital (MTD) 2026
The transition to MTD for Income Tax is the largest shift in tax administration since the introduction of Self Assessment in the 1990s.
Mandatory Enrollment Criteria
Starting April 6, 2026, all self-employed individuals and landlords with a combined gross income above £50,000 must use MTD-compatible software. This “qualifying income” includes the total of all business and property income before any expenses or tax-free allowances are deducted.
Quarterly Reporting Requirements
Under MTD, the traditional once-a-year tax return is replaced by four quarterly updates and one final year-end declaration. These digital updates provide HMRC with a real-time view of business performance, aiming to reduce the “tax gap” caused by manual entry errors and late filings.
Income Tax and National Insurance
The 2026/27 tax year brings a mixture of frozen allowances and increased thresholds to address fiscal drag while providing some middle-income relief.
New Tax Thresholds 2026
While the Personal Allowance remains frozen at £12,570, the government has increased the Higher Rate Threshold to £55,000. This means the 40% tax rate now applies only to income earned above this level, providing a modest tax reduction for millions of workers who would otherwise have been pushed into the higher bracket by inflation.
National Insurance Adjustments
The primary threshold for Class 1 National Insurance has been adjusted to align with inflation, offering a small buffer for low-to-middle-income earners. For the self-employed, the continued abolition of Class 2 National Insurance, alongside simplified Class 4 rates, aims to streamline the tax burden for small business owners.
Changes to Business and Property Relief
Major reforms to Inheritance Tax (IHT) and Capital Gains Tax (CGT) take effect this year, significantly impacting succession planning for family businesses.
The £2.5 Million IHT Cap
From April 6, 2026, 100% relief for Agricultural Property Relief (APR) and Business Property Relief (BPR) is capped at a combined £2.5 million per individual. Assets exceeding this value will only receive a 50% relief, resulting in an effective IHT rate of 20% on the excess, a change that requires many farmers and business owners to revise their wills.
Capital Gains Tax on Disposals
The tax cost of selling a business has increased, as the Business Asset Disposal Relief (BADR) rate rises to 18% in April 2026. This is a substantial increase from the 10% rate seen in previous years, emphasizing the need for professional tax advice prior to any planned business exit or asset liquidation.
Child Benefit and Welfare Updates
HMRC continues to manage the administration of Child Benefit, with 2026 seeing both rate increases and threshold adjustments.
Weekly Benefit Rates
Eldest or Only Child: Increased to £27.05 per week.
Additional Children: Increased to £17.90 per week.
Guardian’s Allowance: Increased to £22.95 per week.
High Income Child Benefit Charge (HICBC)
The threshold for the HICBC remains at £60,000. Families where one partner earns over this amount must pay back a portion of the benefit through Self Assessment; if earnings exceed £80,000, the entire benefit is effectively reclaimed by HMRC.
Practical Information and Planning
Navigating HMRC in 2026 requires utilizing digital tools while maintaining access to traditional support lines.
Essential HMRC Contact Data
Self Assessment Helpline: 0300 200 3310 (Mon–Fri, 8 am to 6 pm).
VAT Enquiries: 0300 200 3700.
HMRC Online Services Helpdesk: 0300 200 3600 (for MTD software issues).
Postal Address: HM Revenue and Customs, BX9 1AS, United Kingdom.
2026/27 Key Dates
April 6, 2026: Start of the new tax year and MTD for Income Tax mandate.
May 31, 2026: Deadline for employers to issue P60 documents to employees.
July 31, 2026: Second “Payment on Account” deadline for Self Assessment taxpayers.
January 31, 2027: Deadline for the 2025/26 online tax return and final tax payment.
Seasonal Updates: Spring 2026
As of April 2026, HMRC is launching a limited pilot for a new targeted advance assurance service for R&D tax relief. This is designed to help small-to-medium enterprises (SMEs) get early confirmation that their innovation projects qualify for tax credits, reducing the risk of later clawbacks or investigation. Business owners are encouraged to apply for this pilot via the Government Gateway portal.
FAQs
Who must join Making Tax Digital (MTD) in 2026?
Self-employed individuals and landlords with a gross income over £50,000 must use MTD from April 6, 2026.
What is the UK Personal Allowance for 2026/27?
The Personal Allowance is frozen at £12,570; you do not pay income tax on earnings below this amount.
Has the Higher Rate tax threshold changed?
Yes, for 2026/27, the threshold has been increased to £55,000, up from the previous £50,270.
How much is Child Benefit per month in 2026?
For the eldest child, it is approximately £117.22 per month (£27.05 weekly).
Can I still file a paper tax return?
Only if you are exempt from MTD (e.g., due to age, disability, or religious grounds) or if your income is below the £50,000 threshold.
What is the new BADR tax rate?
The Business Asset Disposal Relief (formerly Entrepreneurs’ Relief) rate is now 18% as of April 2026.
When do I need to submit MTD quarterly updates?
Deadlines are typically one month after each quarter-end (e.g., August 5, November 5, February 5, and May 5).
Does HMRC still have a Saturday helpline?
Generally, helplines are Monday to Friday only, but they occasionally open on the last Saturday of January for Self Assessment support.
What happens if I miss an MTD deadline?
HMRC has introduced a points-based penalty system; you accrue points for late submissions, leading to financial penalties once a threshold is met.
Is Inheritance Tax changing in 2026?
Yes, a new £2.5 million cap now applies to 100% relief for business and agricultural assets.
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