Written By Jonathan Palmer

Avoid the January Tax Rush (and Fees) | Self Assessment 2025/26

If you complete a Self Assessment tax return in the UK, you already know the deadline: 31st January 2027.

But here’s the truth, waiting until January is where things go wrong.

Every year, thousands of taxpayers leave their Self Assessment until the last minute. The result? Stress, delays, missed information, and in some cases, extra costs.

It doesn’t need to be that way.

 

Why you shouldn’t leave your Self Assessment until January

Filing your Self Assessment tax return early gives you control.

When you act now, you:

• Avoid the January rush and time pressure
• Reduce the risk of errors or missing information
• Get clarity on how much tax you owe
• Have time to plan and budget for payments
• Ensure your accountant can prioritise your return properly

Early action isn’t just easier—it leads to better outcomes.

 

Start your Self Assessment the right way

The simplest way to begin is by completing your checklist.

👉 Complete your Self Assessment Checklist here:
https://form.jotform.com/260672993446065

This is the first and most important step in preparing your 2025/26 Self Assessment tax return.

 

What information do you need for Self Assessment?

Our checklist is designed to capture everything required to complete your return accurately, including:

• Employment income (P60s, P45s)
• Self-employment or freelance income
• Dividend and investment income
• Rental property income
• Pension contributions
• Any other taxable income

You can also upload supporting documents directly, making the process faster and more efficient.

 

Avoid Delays: Get It Right First Time

One of the biggest causes of delays in Self Assessment tax returns is missing or incomplete information.

If we need to follow up for documents or clarification, it slows everything down—especially during busy periods.

If you’re unsure about anything, we’ll guide you through it. It’s always quicker to ask early than fix issues later.

The January Deadline (and the reality behind it)

Yes, the official Self Assessment deadline is 31st January 2027.

But January comes with challenges:

• High demand for accountants
• Longer turnaround times
• Increased pressure on accuracy
• Greater risk of last-minute issues

To manage this, any checklist submitted in January 2027 will incur a £50 + VAT late processing fee.

This isn’t about penalties—it’s about encouraging better planning and ensuring we can deliver the quality you expect.

 

Benefits of completing your tax return early

Submitting your Self Assessment early means:

• You know exactly what you owe well in advance
• You can spread the cost or plan payments
• You avoid last-minute stress
• Your finances stay organised and under control

It’s a smarter, more proactive way to manage your tax.

Get it done. Get it off your mind.

The sooner you start, the smoother it is.

Complete your checklist today or speak to Chay directly for support.

👉 Start now: https://form.jotform.com/260672993446065

 

Need help with your Self Assessment?

At Honest Accounting, we keep things simple, clear, and jargon-free.

If you need support completing your checklist or understanding your tax position, get in touch. We’re always here to help you get it right.

Prefer to talk?

Talk to Chay Mottley our Commercial Director

📞 01524 256617

📧 chay@honestaccounting.co.uk

 

Honest Accounting. Simple. Efficient. Always Compliant.