According to IFA Magazine, the first Fidelity Personal Investing customer to max out their 2026/27 ISA Allowance did so at 00:21 on 6 April 2026. By contrast, the final customer to use their full allowance for 2025/26 did so at 23:40 on 5 April 2026.
The two payments were just 41 minutes apart, but the financial and emotional consequences of being an early-bird investor could be significant.
And that’s just one reason why it’s never too early to start planning for tax year end.
Here are three steps to take now.
1. Plan early to reduce stress
Tax wrappers like ISAs and pensions are incredibly tax-efficient, and if you can afford to, you might be planning to make full use of your available allowances this tax year.
Rather than waiting until the last minute and joining in with the end of tax year panic during ISA season, you might opt to make your lump sum payments early.
This alleviates any stress come 5 April and means that you can concentrate on spending your remaining funds on the things you enjoy.
Early planning might also mean setting up regular contributions. Once these payments are in place and budgeted for, you can sit back and relax, with peace of mind that your tax-efficient allowances will be maximised.
2. Make an early ISA investment to potentially increase your returns
MoneyWeek recently looked at the difference in investment returns depending on when the full annual ISA Allowance is reached. It assumed the full £20,000 was placed into the MSCI ACWI Net Total Return (GBP) index every year from 6 April 1999, the date that ISAs launched.
Early-bird investors who made their £20,000 payment on 6 April each year (starting in April 1999) would now have an ISA fund worth £1,277,963.
An investor who made the same regular payment but waited until the end of the tax year (starting on 5 April 2000) would have a fund worth £1,195,127.
This is around £83,000 lower. The lost year means an opportunity cost associated with the delayed investment, as well as a delayed (and therefore diminished) impact from compound growth.
The later payments mean compound growth had less time to take effect and did so on a smaller amount, with significant consequences over time.
3. Understand and prepare for upcoming changes
April 2027 will see several tax rate and allowance changes, so acknowledging and planning for these early could help to mitigate their impact.
The Inheritance Tax treatment of pensions is changing, so start planning early
We first wrote about the chancellor’s changes to the Inheritance Tax treatment of pensions back in December 2024. At this point, they were a proposal only, and we advised against knee-jerk reactions.
The changes are now due to come into force from April 2027, but the advice remains the same today. Don’t panic, and avoid emotional decision-making.
You can read more about the changes in our article: Should I cash in my retirement pot ahead of IHT pension changes?
For now, though, remember that being aware of the new rules is the first important step. Use this year to speak to us. We can help you think about how – if at all – the change might affect you, and how to mitigate any potential impact.
You might want to take advantage of the full £20,000 Cash ISA subscription before the limit drops
From 6 April 2027, the Cash ISA limit will drop for under-65s, from £20,000 to just £12,000. This is part of the government’s plans to incentivise investment.
The ISA Allowance will remain at £20,000 for 2027/28, but if you move £12,000 into a Cash ISA, you will have to direct the remaining £8,000 elsewhere (if you are under 65).
Your ISAs are extremely tax-efficient as you don’t pay tax on interest in your Cash ISA, and Stocks and Shares ISA gains are free of both Income Tax and Capital Gains Tax. If you hold both Cash and Stocks and Shares ISAs, early planning could help you decide where to channel your ISA subscription this year.
Property and savings tax rates are increasing
In her 2025 Autumn Budget, chancellor Rachel Reeves announced increases to the rate of tax on dividends, property, and savings. While Dividend Tax rates have already increased, the two-percentage-point rise to property and savings is effective from 6 April 2027.
From that date, tax on property income will be payable at 22% (basic rate), 42% (higher rate), and 47% (additional rate). You might need to factor these changes into your 2027 budgeting, but doing so now could help to make the transition easier.
The rate of tax on your savings income will also increase by two percentage points from next year, across all tax bands.
Get in touch
If you’re looking for an independent financial adviser in Milton Keynes or Olney to help you navigate this tax year and the next, look no further.
At Jane Smith Financial Planning, we’ve been helping clients for 30 years, so contact us at info@janesmithfinancial.com or call 01234 713131 to see what we can do for you.
Please note
This article is for general information only and does not constitute advice. The information is aimed at retail clients only.
All information is correct at the time of writing and is subject to change in the future.
Please do not act based on anything you might read in this article. All contents are based on our understanding of HMRC legislation, which is subject to change.
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