Self Assessment Tax Return Deadline: What You Need to Know

As the Self Assessment tax return deadline approaches, many individuals across Northern Ireland are feeling the pressure. Whether you’re a sole trader, freelancer, landlord, or company director, meeting HMRC’s deadline is non-negotiable.

At LC Accountancy, we help make tax season a lot less stressful. Based in Ballymena, we work with clients throughout Northern Ireland, making sure they submit accurate, on-time returns while avoiding penalties.

Let’s break down what you need to know—and how we can help.


When is the Self Assessment Tax Return Deadline?

The key date to remember is:

🗓️ 31 January (midnight) — This is the deadline for:

  • Submitting your online Self Assessment tax return
  • Paying any tax owed for the previous tax year
  • Making your first ‘payment on account’ (if applicable)

If you miss this deadline, HMRC will usually issue an automatic £100 fine, even if you don’t owe any tax. The longer you delay, the more penalties and interest you could face.

Need help meeting the deadline? Contact LC Accountancy today — we’ll handle the process for you.


Who Needs to File a Self Assessment Tax Return?

You’ll need to file if you fall into any of the following categories:

  • Self-employed as a sole trader
  • A partner in a business partnership
  • A landlord earning rental income
  • You earn income from investments, dividends, or overseas sources
  • You have untaxed income from other sources
  • You’re a company director and paid via dividends

Not sure if you need to file? LC Accountancy offers straightforward advice, so you’re never left guessing.


Avoiding Late Filing Penalties

HMRC is very strict when it comes to deadlines. If your return is even one day late, you’re looking at an initial £100 penalty. After 3 months, additional daily fines apply, and further charges can be added after 6 and 12 months.

What’s more, if your payment is late, interest starts accruing immediately.

Save yourself the headache—LC Accountancy will ensure your return is filed correctly and on time, giving you peace of mind and more time to focus on your business.


We’re Not Just for January

While most people only think about tax returns in the run-up to the deadline, working with us year-round has big advantages. We’ll help you:

  • Stay organised with cloud bookkeeping
  • Forecast tax bills to avoid nasty surprises
  • Claim all available deductions and reliefs
  • Navigate changing HMRC rules
  • Plan effectively for your business or personal finances

We serve clients across Northern Ireland, offering expert, friendly support from someone who understands the local business landscape.

🌍 Learn more about our region: Northern Ireland on Wikipedia


How LC Accountancy Can Help

We handle HMRC for you
From registration to submission, we deal with the admin so you don’t have to.

We make tax simple
We’ll explain everything clearly, calculate your bill, and submit your return accurately.

We save you time
You run your business. Let us handle the numbers.

We’re local
Based in Ballymena, we proudly serve individuals and businesses throughout Northern Ireland.


Get Started Today

If the 31 January Self Assessment tax return deadline is looming and you still haven’t filed, don’t panic—but don’t delay either.

Let LC Accountancy take the stress out of tax season. Whether you’ve never filed before, are running behind, or just want the job done right, we’re here to help.

👉 Visit LC Accountancy Services to book an appointment or request a callback.

 

Help with Self Assessment Tax Return – Stress-Free Support from LC Accountancy

It’s that time of year again. The deadline is looming, the paperwork is piling up, and the words “Self Assessment Tax Return” are enough to send a shiver down your spine. Sound familiar?

If you’re a sole trader, freelancer, landlord, or small business owner in Northern Ireland, don’t worry—you don’t have to face it alone. At LC Accountancy Services, we specialise in helping people just like you complete their Self Assessment tax returns accurately, on time, and without the stress.


Who Needs to File a Self Assessment Tax Return?

You’re legally required to submit a Self Assessment tax return if you fall into one of the following categories:

  • You’re self-employed or a sole trader and earned more than £1,000
  • You’re a partner in a business partnership
  • You earn rental income from property
  • You have income from investments, dividends, or crypto
  • You receive foreign income
  • Your income is above £50,000 and you claim Child Benefit
  • You earned money from a side hustle (even if it’s part-time)

If any of that sounds like you—and you’d rather not spend hours digging through receipts and deciphering tax codes—LC Accountancy can take it all off your plate.


Why Is Self Assessment So Stressful?

Let’s be honest—tax returns are confusing, time-consuming, and often overwhelming. Between figuring out which forms to use, what income to declare, and what expenses you can claim, it’s easy to make mistakes.

Worse still, filing late or inaccurately can lead to penalties and interest from HMRC. A simple oversight could end up costing you hundreds.

That’s why more and more individuals across Northern Ireland are turning to LC Accountancy for help with their Self Assessment tax returns. We make the process simple, straightforward, and even… dare we say, enjoyable?


What We Offer

At LC Accountancy Services, we provide tailored, one-to-one support for individuals and businesses who need help with their Self Assessment. Our service includes:

Initial Consultation & Registration Support
Never filed before? We’ll register you with HMRC and explain what information you need to provide.

Full Completion & Submission
We’ll gather your figures, calculate your tax liability, and file your return directly with HMRC—accurately and on time.

Claiming Allowable Expenses
We make sure you’re claiming every deduction you’re entitled to—from home office costs and mileage to professional fees.

Advice You Can Trust
Have a question about tax thresholds, payments on account, or how to prepare for next year? We’re here to help all year round, not just at tax time.

Peace of Mind
No stress. No guesswork. Just professional support and clear communication every step of the way.


Who Do We Help?

Self-Employed Individuals

Whether you’re a full-time freelancer or running a side hustle, we’ll make sure your income and expenses are properly recorded and reported.

Sole Traders & Small Business Owners

We work with tradespeople, personal trainers, creatives, consultants and more. Our service is tailored to your trade and lifestyle.

Landlords

We help property owners file rental income, mortgage interest relief, and claim all allowable expenses—accurately and efficiently.

High Earners

If you claim Child Benefit or have multiple income streams, we’ll make sure your return is spot-on, helping you avoid penalties and keep more of what you earn.


Why Choose LC Accountancy?

📍 Local & Experienced
We’re based in Ballymena, serving clients all across Northern Ireland. You’re not a number on a spreadsheet—you’re a valued client who deserves expert attention and tailored advice.

👨‍💼 Professional, Friendly Support
LC Accountancy is run by a former Finance Manager with over 15 years of experience across SMEs and charities. You’re in safe hands.

💻 Cloud-Based and Efficient
We use up-to-date, cloud-based software that keeps your records secure and organised. No messy paperwork. No shoebox of receipts.

💷 Transparent Pricing
You’ll know exactly what you’re paying—no hidden fees, no surprises.


Don’t Wait Until It’s Too Late

The Self Assessment deadline for online returns is 31 January—but why leave it until the last minute?

By acting early, you’ll avoid the rush, reduce your stress, and have time to plan ahead if you owe tax. Even better—you might even get a refund!

Now’s the perfect time to let someone else take the reins.


Book Your Appointment Today

Whether this is your first Self Assessment or your tenth, we’re here to make it easy.

📅 Book an appointment today and let’s talk about how we can support you this tax season. We offer flexible meetings (online or in-person) to fit around your schedule.


Final Thoughts

You’ve got enough on your plate without worrying about tax. Let LC Accountancy Services give you the support you need—accurate returns, maximised savings, and zero stress.

Don’t risk penalties or overpaying. Get expert help with your Self Assessment tax return today.