rating-stars 5/5

75 reviews on

google
rating
img

What is a self-assessment tax return?

img

March 18, 2022

img

Introduction

People or businesses in Scotland with income that’s not automatically taxed must report it in the form of a self-assessment tax return. HMRC has an online self-assessment system to collect income tax.

If you’re unsure as to whether you need to submit a self-assessment tax return, read this blog that outlines everything you need to know about them.

What is a self-assessment tax return?

A self-assessment tax return is a legally binding document used to calculate how much tax you owe on your income. The form allows you to declare your earnings, irrespective of whether you owe tax or not. In some instances, the form can help you secure a tax rebate instead.

The tax office sends you a tax return if they think you fit the self-assessment criteria. Upon receiving the notice, you need to complete it within the deadlines provided to avoid penalties. The current deadline for an online self-assessment tax return form is 31st January.

If you receive a notice from HMRC requiring a tax return for previous tax years, you’re usually given three months to complete and submit the form from the date you receive the notice. It’s important that you allow for up to 20 working days if you’ve never filed a self-assessment tax return, as you need to go through a registration process first.

Who has to fill in a self-assessment tax return?

You need to fill in a self-assessment tax return if you work on a self-employed basis. Other instances when you may be required to fill one out include:

– To claim work expenses
– To claim Tax-Free Childcare or Maternity Allowance
– If you’re a landlord receiving income from a property
– If you’re a non-resident UK taxpayer
– If you’re a non-resident UK landlord

It’s important that you complete a self-assessment tax return if you receive any other form of untaxed income. This includes COVID-19 grant or support payments, tips and commission, income from savings, investments, and dividends, or foreign income.

How to submit a tax return

You can complete a self-assessment tax return online or in paper format. The tax office provides free software for individuals wanting to complete the form online. Please note that, in some instances, you may have to use commercial software.

A2Z Accounting provides accounting services in Aberdeen. If you need help filling in your tax return, don’t hesitate to contact our team today.

Contact With An Expert
Recent Posts

Related blogs

default image Dental

May 9, 2026

calendar icon

Can Associate Dentists Route NHS Income Through a Limited Company?

The Complete Specialist Guide to the Most Consequential Tax and Pension Question in Dental Practice A forensic examination of NHS superannuable income, limited company structures, pension risk, the split income...

Read full blog arrow
default image Dental

May 6, 2026

calendar icon

How Dentists Can Reduce Tax and Improve Profitability

Running a successful dental practice today involves far more than delivering excellent patient care. Dental clinics across the UK face increasing financial pressures, including: Rising operating costs Staffing expenses Equipment...

Read full blog arrow
default image E-Commerce

May 4, 2026

calendar icon

Ecommerce Cash Flow Management: How Online Businesses Stay Profitable

Many ecommerce business owners focus heavily on sales growth, advertising performance and revenue targets. While those metrics matter, there is one financial factor that often determines whether an online business...

Read full blog arrow
default image Tax advice

April 29, 2026

calendar icon

How to Reduce Corporation Tax in the UK: Legal Strategies

For UK businesses, corporation tax is one of the largest expenses impacting profitability. Whether you run a small company, an e-commerce business, or a growing enterprise, understanding how to reduce...

Read full blog arrow
default image Property Tax

April 25, 2026

calendar icon

Incorporation Relief for Property Investors UK: When It Works, When It Doesn’t and Why Structure Matters

Many property investors eventually reach a stage where they consider transferring their portfolio into a limited company structure in the UK. The motivation is usually tax efficiency. With mortgage interest...

Read full blog arrow
default image Property Tax

April 23, 2026

calendar icon

Property Development vs Property Investment UK: Key Tax Differences Every Investor Must Understand

For many UK property investors, the goal is simple: build long-term wealth through real estate. However, one of the most overlooked – and costly – mistakes is misunderstanding the difference...

Read full blog arrow
default image Others

April 20, 2026

calendar icon

Family Property Partnerships UK: The Smart Structure Property Investors Overlook

Many investors begin their journey with a simple goal – to generate rental income and long-term capital growth. However, as portfolios expand, what started as a small investment often becomes...

Read full blog arrow
default image Property Tax

April 18, 2026

calendar icon

Should You Move Your Property Portfolio Into a Limited Company? UK Tax, LBTT & Strategy Guide

As property portfolios grow, many investors begin asking: Should I move my property portfolio into a limited company in the UK? With rising interest in property company structures UK, lower...

Read full blog arrow

Testimonials

Kevin Smith
Owner The Drouthy Cobbler - Elgin Spey Life – Forres

"Building a real relationship with our accountant, not just handing over paperwork like before”

Mrs. Rona Tonge
Managing Director, Golf View Hotel – Lossiemouth

“An absolute pleasure to work with!”

Mr. Mohamed Ali
Property Tycoon & Owner, MacAli Hotel Group – Elgin

“As they grow, we grow”

Behrouz Abolghassem
Owner, Little Italy – St Andrews

"My business grew stress-free—want a good life? Move to A2Z."

Christopher O’Halloran
Owner, The Green Inn – Ballater

"The friends I referred to A2Z faced challenges, but those who made the move to A2Z couldn’t thank me enough"

Khuram Qadir CEng
Founder and Oil & Gas Engineer, Cygnas Solutions – Aberdeen

“You really get to know your accountant when you're in the deep end.”

Mrs. Lisa Morrison
Treasurer, Seaforth Club – Nairn

“Every team member is exceptionally supportive—always quick to assist and resolve”

Mr. Hosam Yousef
Pharmacist & Pharmacy Owner – Aberdeen

“I can trust them to handle everything while I focus on growing my business”

Lesia Robertson
Director, Mamma Mia - Banchory

"A2Z are the most amazing accountants—turning my sleepless nights into clarity and confidence."

Nurul Hoque Ali

Oil & Gas Engineering Consultant - Aberdeen

Kimberley Welsh
Owner, Ca’dora Diner – Elgin

"Switching to A2Z has been a game-changer – fast, efficient, and helped improve my knowledge!"

Ameer Aslam
Owner, Nickel & Dime – Various

"Switched accountants a week before the deadline—A2Z handled everything flawlessly."

Ms. Cassandara-Jane Thornton
Owner, West End Hotel – Nairn

“A2Z transformed our chaotic accounts, making the impossible achievable”

Dr. Hassan Abbas
Managing Director & Consultant Cardiologist Hourglass Wellbeing – Aberdeen Hourglass Wellbeing

"7 years of unwavering support—A2Z navigates VAT complexities and fuels my clinic’s growth!"

Hassan Nazer
British Film Director & Entrepreneur – Aberdeen

“They’ve got a solution for every problem”

Ashlyn Johnson
Director, Norah’s - Elgin

"We've worked with A2Z for three years and will definitely continue for a long time."

Nathan Davies
Director, Badenoch’s – Elgin

"The depth they go into is incredible— an eye-opener, especially when it comes to management accounts."

Google Review

Read what our customers have to say.