If there is one clear compliance message from Budget 2026, it is that HMRC intends to become increasingly data-led, digital and proactive.
Taken together, the measures give HMRC more people, better access to information and stronger tools to identify non-compliance and collect unpaid tax. For taxpayers and advisers, the direction of travel is clear: HMRC wants to identify problems earlier and intervene sooner.
More resource for compliance
The government will recruit a further 670 compliance officers by 2029-30, in addition to the previous commitment to recruit 5,500 additional officers.
Better technology and data may help HMRC identify risk, but additional compliance staff give it greater capacity to turn that intelligence into enquiries and interventions.
HMRC has also published a new plan for wealthy taxpayer compliance, with greater use of data, technology and specialist expertise to identify and address non-compliance earlier.
Greater access to information
HMRC’s civil information and inspection powers will be modernised, including changes to information notices and the definition of computer records to reflect modern ways of storing and accessing information.
Alongside this, the government is consulting on the use of third-party property income data, while the UK will participate in a new international agreement for the automatic exchange of information on real estate from 2029-30.
For taxpayers, the important point is that HMRC increasingly has information available from sources other than the taxpayer, against which reported information can be checked.
A new obligation to correct errors
One particularly important proposal is the introduction of new requirements for taxpayers to correct tax returns and documents where inaccuracies have been identified, taking effect from 1 April 2028.
The detailed legislation will be important, but from a disputes perspective this is significant. Once a taxpayer becomes aware of an historic error, there will be an even greater need to consider promptly how it should be corrected and whether other years or taxes could be affected.
Finding an historic problem is not something to ignore in the hope that HMRC never asks the question. How a taxpayer responds once an issue has been identified can be extremely important.
A tougher approach to tax debt
Debt collection is another significant theme.
From July 2029, HMRC will gain a new power to recover lower-value tax debts through regular instalments directly from bank accounts where taxpayers can afford to pay but repeatedly fail to do so. A Code of Practice will set out the safeguards and operational framework before the measure is legislated for.
The government will also invest a further £70 million over five years in HMRC’s partnerships with private-sector debt collection agencies.
From April 2029, taxpayers will also be required to have direct debit arrangements in place for VAT and PAYE return liabilities. Other payment methods will remain available before a specified cut-off, but the direct debit can then be used to collect unpaid balances.
Also from April 2029, taxpayers already making Payments on Account will move to smaller, more regular payments throughout the year, bringing tax payments closer to when income is earned and reducing the risk of tax debt building up.
The message is straightforward: HMRC is becoming less willing to allow established tax debt simply to remain unpaid.
Digitalisation becomes part of compliance
The Budget continues HMRC’s move towards a more digital tax system.
VAT invoices will have to be issued in a specified electronic format from 1 April 2029.
There is, however, some breathing space on Making Tax Digital. Taxpayers entering MTD for Income Tax in April 2027 will not receive penalty points for late submission of their first four quarterly updates for 2027-28, replicating the soft landing for those who entered in April 2026.
Digitalisation is not simply an administrative change. More structured and timely information potentially gives HMRC greater visibility over taxpayers’ affairs.
Advisers and avoidance remain under scrutiny
HMRC will publish an intermediation roadmap in spring 2027, setting out its longer-term approach to tax advisers, software providers and other intermediaries.
Further measures are planned to tackle the promotion and use of tax avoidance, alongside a review of persistent non-compliance by a small minority of larger businesses and reforms to the publication of details of deliberate defaulters.
The government has also announced a forthcoming consultation on reforming the offshore penalties framework.
What does this mean for taxpayers?
The significance of Budget 2026 lies less in any individual measure and more in their combined effect: more HMRC resource, more data, stronger information powers, greater digitalisation and tougher debt recovery.
For businesses and individuals, good tax governance therefore becomes even more important. Taxpayers should ensure that unusual or judgemental positions are properly documented, historic errors are addressed promptly, offshore affairs are correctly reported and HMRC correspondence is dealt with appropriately.
The best response remains relatively simple: get the position right, retain the evidence supporting it and, where something has gone wrong, address it early.
Taking advice at an early stage can make a considerable difference to how a disclosure or HMRC enquiry develops and, ultimately, how it is resolved.
