[Updated 1 February 2026]: If you missed the 31 January deadline to submit your self-assessment tax return, you are now into the penalty stage. HMRC applies an automatic £100 penalty to those who are anywhere from 1 day to 3 months late. Further penalties are then added if you take even longer to comply. It's even worse if you haven't paid the tax owed to HMRC by 31 January because you'll then owe interest on that too. Here's our professional advice of what to do if you're late...

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With the self-assessment tax return deadline almost upon us, we are opening our Tulse Hill office* this Sunday, 25 January 2026, from 10 am to 5 pm by appointment. That's in addition to Saturdays, which will remain open, by appointment, for the remainder of January (9 am-5 pm on 24 January) and, of course, weekdays opening hours as usual (see footer). A weekend appointment may be the perfect opportunity to discuss your tax return with us or bring in figures and records without having to disturb your working week. Weekend time slots are limited, though, so please book a free 20-minute appointment as soon as possible if you'd like to visit.

The post We’re Open on Sunday 25 January 2026 — Beat the Tax Return Deadline! appeared first on Taxfile.

[Updated November 2025]: If you're self-employed in the UK and earn more than £1,000 after allowable deductions, you need to file a self-assessment tax return each year. It's not only the self-employed, though. If you are on a higher income* or receive untaxed income from things like property rental, tips, commission, savings, investments, dividends, or foreign income, you also have to submit a return. Partners in business partnerships and those who made a capital gain resulting in Capital Gains Tax (CGT) also need to submit a return.

If you do have to fill in a self-assessment tax return, getting all the tax return fields filled in properly and the figures right can sometimes be difficult. That's where professional help from companies like Taxfile is worth its weight in gold. But what information will your accountant or tax advisor need from you? In today's guide, we'll explain exactly what you'll need to supply.

The post Information You Need to Supply for Professional Help with Your Tax Return appeared first on Taxfile.

[Updated April 2025]: It’s now time to start the process of claiming your tax refund if you are a sub-contractor working within the Construction Industry Scheme (‘CIS’). Refunds are usually fast through Taxfile. What's more, we've reduced our prices this year for CIS customers earning less than £40k (click here for details).

What you need to do

Don't delay - book an appointment with Taxfile today or call 0208 761 8000 and we'll sort it all out for you. We have staff who speak English, Polish, Pashto, Dari, Russian, Malayalam, and Dutch, should you need them on the day. Our Tulse Hill office is at 25 Thurlow Park Road, London SE21 8JP. Call 0208 761 8000 or book an appointment — the first 20 minutes is free! Alternatively, you can have a 'virtual' appointment with us on Zoom, Teams, Google Hangouts, Skype, FaceTime, WhatsApp or whatever you prefer.

We’re open from Monday to Saturday in April & May including early evenings on Mon/Tues

Our Tulse Hill office is open 6 days a week during April & May and offers Saturday morning appointments plus early evening appointments on Mondays and Tuesdays if standard office hours do not suit you (please see the footer of this website for details or simply call us).

Check List:

The post CIS Sub-contractors – Claim Your Tax Refund Now! appeared first on Taxfile.

by Faiz at Taxfile

An SA302 is a document issued by HM Revenue & Customs (HMRC) that summarizes your income tax calculation for a specific tax year. It shows how your tax bill was arrived at, including your income from various sources, any deductions and allowances, and the final amount of tax owed or refunded. In today's guide, we explain why your SA302 is important, how and where to get a copy of it, and why it's important to check tax returns and avoid errors.

The post Demystifying the SA302: Your Tax Summary Explained appeared first on Taxfile.

Are you a sole trader or in a partnership? 

Do you have different accounting dates from the standard 6th of April to the 5th of Apri?

If you answered YES to both questions, some IMPORTANT changes will apply for the tax year 2023-24.

The concept of the basis period determines the time frame used to calculate taxable profits or losses for self-employed individuals, partnerships, and some trusts.  It marks a departure from the traditional "current year" basis, where business profits were taxed based on the accounting period ending within the tax year. Instead, it introduces a "tax year" basis, aligning taxable profits with the UK's standard tax year, running from 6 April to 5 April.

The post Understanding Basis Period Reform for Self-Assessment Tax in the UK appeared first on Taxfile.