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Personal Tax Account vs Business Tax Account: A Guide for UK Accounting Firms

personal tax account and business tax account
A personal tax account is HMRC’s secure online portal for individuals to manage their personal tax affairs, viewing tax codes, checking National Insurance records, updating personal details, and filing Self Assessment returns. It is distinct from the business tax account, which serves as the central hub for business-level compliance across Corporation Tax, VAT, PAYE, and more. For an accounting firm managing a client base with varied structures and obligations, it is important to understand the difference between the two, and how each functions in practice. Knowing exactly where individual liabilities end and entity compliance begins is the key to smooth practice management.

Table of Contents

What Is a Personal Tax Account?

The HMRC personal tax account is a secure online service that gives individuals direct access to their tax information and the tools to manage it without needing to contact HMRC directly.

Key functions available through the personal tax account include:

  • Viewing a tax summary for the current tax year, including income received and tax paid
  • Checking and querying a tax code
  • Accessing Self Assessment filing history and current submission status
  • Updating personal information such as address, contact details, and bank account for refunds
  • Reviewing National Insurance contribution records and State Pension forecast

First launched by HMRC in 2015, the personal tax account has become a core part of how individuals engage with their tax obligations digitally. It is designed for individuals including employees, self-employed sole traders, landlords, and directors with personal tax obligations.

What Is a Business Tax Account?

The HMRC business tax account serves as a single online portal where sole traders and limited company owners can handle their VAT, PAYE, Corporation Tax, and Self Assessment obligations. Access is free and requires a Government Gateway login.

Unlike the personal tax account, the business tax account is structured around the entity rather than the individual. It covers the four main business tax services, VAT, PAYE for employers, Corporation Tax, and Self Assessment for sole traders, as well as more than 40 additional taxes, duties, and schemes that can be added as required.

Through the HMRC business tax account, firms and their clients can:

  • File and track business tax returns
  • View Corporation Tax liabilities and payment history
  • Submit and manage VAT returns, including under Making Tax Digital
  • Manage PAYE obligations for employer clients
  • Add or remove registered taxes and authorise tax agents
  • Receive and respond to secure HMRC communications

Worth noting for limited company clients: from April 2026, HMRC withdrew its free Corporation Tax filing service. CT600 submissions now require approved commercial software. The business tax account continues to serve as the portal for viewing returns, checking balances, and making payments, but the filing step itself happens outside it.

What Is the Difference Between a Personal Tax Account and a Business Tax Account?

The core distinction lies in who the account is designed to serve and what obligations it covers.
Personal Tax AccountBusiness Tax Account
UserIndividual taxpayersSole traders, partnerships, limited companies
Primary taxesIncome Tax, NIC, Self AssessmentCorporation Tax, VAT, PAYE, CIS
Tax return typePersonal tax return (SA100 and supplementary pages)Business tax return (CT600 for companies)
Business structureN/AAll structures
Agent accessVia agent credentialsVia agent credentials
For directors of limited companies, both accounts will typically be relevant: the personal tax account for their own income tax and dividend reporting via Self Assessment, and the business tax account for the company’s Corporation Tax and PAYE obligations.

How Does the Personal Tax Account Interact With Self Assessment?

Self Assessment applies to individuals with income that falls outside, or only partially within, the PAYE system. This includes the self-employed, landlords, partners in partnerships, and directors who receive dividends or other untaxed income above the relevant thresholds. Technically, directors whose remuneration is fully processed through PAYE with no untaxed income are not automatically required to register. In practice, however, the vast majority of owner-managers and directors that accounting firms deal with will still need to file; dividend income drawn from their own company is the norm rather than the exception, and this falls outside PAYE entirely.

For clients who do file, the online deadline is midnight on 31 January following the end of the relevant tax year. For the 2024/25 tax year, that was 31 January 2026.

The personal tax account supports the Self Assessment process by surfacing pre-populated income data, tax calculations, and prior filing history. For firms managing Self Assessment obligations across a large client portfolio, however, HMRC’s agent services platform will generally be the more efficient working environment.

What Does MTD Mean for Personal and Business Tax Accounts?

Making Tax Digital for Income Tax (MTD for IT) is the most significant shift in personal tax compliance for a generation. The mandation schedule is phased by income level: from 6 April 2026 for those with gross self-employment and property income above £50,000; from April 2027 for those above £30,000; and from April 2028 for those above £20,000.

Under MTD, affected taxpayers must maintain digital records using HMRC-recognised software and submit quarterly income and expense updates throughout the year, with a final declaration due by 31 January. Those below the applicable threshold continue under the existing annual Self Assessment system without any change to how they file.

For firms, this creates a clear advisory and operational opportunity. Clients entering the MTD scope for the first time will need guidance on compatible software, quarterly submission workflows, and the transition away from annual personal tax return filing. Firms that build this capability now will be well placed to support clients as each threshold comes into force.

The scale of digital engagement with HMRC already reflects how embedded these accounts have become: by the end of December 2025, HMRC recorded 95.8 million user sessions in personal tax accounts and 33.0 million in business tax accounts. (Source: HMRC Performance Update 2025–26, Quarter 3.)

HMRC Personal and Business Tax Accounts: Practical Implications for Accounting Firms

Understanding which account governs which obligation is not merely academic but it directly affects how client records are structured, how authorisations are set up, and where compliance risk sits.

For accounting firms managing a mixed client base, a common workflow involves:

  • Confirming whether the client is an individual, sole trader, partnership, or limited company
  • Identifying whether a personal tax account, business tax account, or both are relevant
  • Setting up agent authorisation appropriately for each
  • Aligning internal processes to MTD timelines where applicable

Where client volumes are high or tax obligations span multiple entity types, the administrative burden of managing HMRC accounts alongside advisory work can become significant. Firms looking to maintain quality and turnaround times without expanding headcount are increasingly exploring how to extend their team’s capacity through global accounting partnerships.

Befree’s tax compliance support services are designed precisely for this. Whether the requirement is Self Assessment processing, VAT return preparation, or business tax return management for a portfolio of clients, Befree works as an integrated extension of the UK firm’s team. To find out how Befree supports accounting firms with tax compliance work, explore our tax outsourcing services.

FAQs

What is a personal tax account used for in the UK?

A personal tax account is HMRC’s online portal for individuals to manage their personal tax affairs. It allows users to check their tax code, view their Self Assessment history, update personal details, review their National Insurance record, and access their personal tax return filing. It is separate from the business tax account, which handles business-level obligations.
Yes. Sole traders often use both. The business tax account covers business-level taxes such as VAT and PAYE (if they employ staff), while the personal tax account or Self Assessment handles income tax on their trading profits. HMRC allows both accounts to be accessed through the same Government Gateway login.
A personal tax return (Self Assessment, SA100) reports an individual’s income, gains, and reliefs for a tax year. A business tax return (CT600) is filed by limited companies to report Corporation Tax liability. The two are filed through different HMRC systems and governed by different rules. Company directors typically have obligations under both.

MTD for Income Tax is replacing the annual personal tax return cycle for many self-employed individuals and landlords. From April 2026, those with qualifying income above £50,000 must use HMRC-recognised software to keep digital records and submit quarterly updates, culminating in a final declaration. The personal tax account continues to provide a summary view of the individual’s tax position, but the filing mechanism for MTD-mandated clients shifts to compatible software rather than direct HMRC portal submission.

Your Clients Are Asking About MTD.

Do You Have the Bandwidth?

From 6 April 2026, over 850,000 sole traders and landlords must file quarterly with HMRC – and many don’t yet have an accountant. That’s an opportunity, but only if your practice has the capacity to take it on.