The UK Tax Year End: What It Is and Why It Matters

Tax Year End Planning: Understanding the UK Tax Year and Why It Matters

As the UK tax year draws to a close on 5 April 2026, individuals, investors and business owners may wish to take time to review their financial arrangements and consider how available tax allowances and reliefs apply to their personal circumstances. At Rhodes Wealth Management, we encourage clients to take a considered and informed approach to financial planning ahead of key tax deadlines.

Figures and allowances referenced are based on current UK legislation and publicly available HM Revenue & Customs (HMRC) guidance at the time of writing. Tax rules may change in the future.

What Is the UK Tax Year?

In the UK, the tax year runs from 6 April to 5 April the following year. This timeframe is used by HMRC to assess how income, capital gains and certain allowances are taxed.

Income received, gains realised, and certain contributions made within this period are generally assessed as part of that specific tax year. When the tax year ends, many allowances reset, and any unused allowances are typically lost.

Understanding how the tax year operates can help individuals plan more effectively and avoid missing opportunities to use tax-efficient allowances.

Key Allowances That Reset Each Tax Year

Several important allowances are linked directly to the tax year end, based on publicly available HMRC rules:

Individual Savings Accounts (ISAs)

Each individual currently has an annual ISA allowance of £20,000. This allowance can be used across Cash ISAs, Stocks & Shares ISAs, Innovative Finance ISAs and Lifetime ISAs (subject to eligibility and specific product limits).

Any unused ISA allowance cannot be carried forward into future tax years. ISAs allow savings and investments to grow free from Income Tax and Capital Gains Tax, making them a widely used tax-efficient planning tool.

Pension Contributions

Most individuals can contribute up to £60,000 per tax year into pensions, subject to earnings and eligibility. For higher earners, the annual allowance may be tapered, and for those who have accessed pension benefits flexibly, the Money Purchase Annual Allowance (MPAA) may apply.

Pension contributions can benefit from tax relief, helping to support long-term retirement planning while potentially reducing taxable income. Unused allowances from the previous three tax years may also be available under HMRC carry forward rules, subject to conditions.

Capital Gains Tax (CGT) Annual Exemption

The Capital Gains Tax annual exemption is currently £3,000 per individual. This means that chargeable gains up to this amount can generally be realised without incurring CGT, subject to overall circumstances.

Reviewing investments, property or other chargeable assets before tax year end may help individuals understand their potential CGT position.

Why Reviewing Before 5 April Matters

Reviewing your position ahead of the tax year end can help ensure your financial arrangements remain aligned with your objectives. It may also provide an opportunity to:

• Check whether key allowances have been used
• Review investment and pension strategies
• Consider changes in income or personal circumstances
• Ensure decisions are made with sufficient time for processing

Tax year-end planning is about taking a structured and informed approach, rather than making rushed decisions.

The value of an investment with St. James's Place will be directly linked to the performance of the funds selected and may fall as well as rise. You may get back less than the amount invested.

The levels and bases of taxation, and reliefs from taxation, can change at any time and are generally dependent on individual circumstances.

Please note that St. James's Place does not offer Cash, Lifetime or Innovative Finance ISAs.

Although the content of the article was correct at the time of writing, the accuracy of the information should not be relied upon, as it may have been subject to subsequent tax, legislative or event changes.