Self Assessment tax return
Stress-free Self Assessment support from experienced accountants.
Self Assessment doesn’t have to be complicated. We’ll prepare and submit your tax return accurately, explain anything that’s unclear and help ensure you’re making the most of available allowances and reliefs.
That means less time worrying about tax and more time focusing on the things that matter most to you.
Why professional Self Assessment support matters
Your tax affairs don't have to be overwhelming when you have someone to turn to.
- Managing multiple sources of income
- Understanding what needs to be reported to HMRC
- Claiming the allowances and reliefs available to them
- Property income and landlord taxation
- Preparing for Making Tax Digital requirements
- Responding to HMRC queries, letters or requests for information
- Gaining reassurance that everything has been completed correctly
Not sure what you need to report or how much tax you’ll owe?
How we help individuals with their Self Assessment
We take the complexity out of personal tax, helping ensure your return is accurate, submitted on time and as tax-efficient as possible.
Accurate returns and peace of mind
We prepare your Self Assessment carefully, helping reduce the risk of errors and giving you confidence that everything has been reported correctly.
Making the most of available reliefs
We identify relevant expenses, allowances and tax reliefs, helping ensure you don’t pay more tax than necessary.
Taking the pressure off
From gathering information to filing your return, we manage the process from start to finish so you can focus on what matters most.
Support with late returns and penalties
If you’re behind with your tax returns, we’ll help you understand your position, bring everything up to date and minimise any potential issues where possible.
Assistance with penalty appeals
Where a penalty has been issued, we’ll review the circumstances, assess the available options and help you through the appeals process if appropriate.
Dealing with HMRC on your behalf
If HMRC contacts you with questions, requests information or opens an enquiry, we can liaise with them directly and help guide you through the process with confidence.
Services we offer
Self-employed tax return
We handle your self-employed return in full, whether you are a sole trader or freelancer. We account for all income, expenses, and allowable deductions correctly.
Landlord Self Assessment tax return
We manage your rental income alongside your other earnings, accurately and tax-efficiently. We ensure your property finances are correctly reported within your wider return.
Multiple income sources
Managing different sources of income can quickly become complicated. We ensure everything is reported correctly and brought together in a clear, accurate Self Assessment return.
Capital gains reporting
We calculate and report any gains from the sale of property, shares, or other assets. We ensure the correct reliefs are applied to keep your liability as low as possible.
HMRC correspondence and investigations
We handle all communication with HMRC on your behalf. Whether it is a routine query or a formal investigation, we manage it from start to finish. We also offer tax investigation insurance to help cover the costs of dealing with an HMRC investigation.
Penalty appeals and late filings
We assess whether you have grounds to appeal a penalty and manage the process for you. We also step in for late filings, submitting as quickly and accurately as possible.
Making Tax Digital for Income Tax
For those landlords and self-employed who are in scope, we get you set up with compliant digital tools well ahead of each MTD deadline. We walk you through exactly what the changes mean for your reporting obligations.
Why choose PJCO for your Self Assessment
- Maximise your tax savings
We go through your finances carefully to ensure every allowable expense and relief is correctly applied. We make sure you never pay more tax than you are legally required to.
- Avoid penalties and HMRC issues
We track your deadlines, manage your filings, and handle any HMRC correspondence that arises. We keep you compliant and protected so nothing ever slips through the net.
- Support for complex personal tax situations
We have extensive experience handling returns that involve multiple income sources, property, investments, and overseas earnings. We manage the complexity so you do not have to.
- Forward-thinking tax planning
We do not just focus on the return in front of us. We take a longer view and help you build a personal tax strategy that reduces what you owe year on year.
- A dedicated team that knows your situation
We build a genuine understanding of your finances over time. You are not passed around or starting from scratch each year, as we already know your position and priorities.
- Responsive, jargon-free support
We respond quickly, explain everything in plain English, and keep you informed at every stage. We make sure you always feel confident and in control of your personal tax position.
Looking for a reliable team to manage your business finances?
FAQ
Who needs to file a Self Assessment tax return?
Self Assessment is commonly required for self-employed individuals, landlords, company directors and people with income from dividends, investments or overseas sources.
You may also need to complete a return if you have untaxed income or other circumstances that HMRC requires you to report. If you’re unsure whether you need to file, we’re always happy to help.
What is the Self Assessment filing deadline?
The online deadline is 31 January following the end of the tax year. If you are filing a paper return, the deadline falls earlier on 31 October. Miss either date and an automatic £100 penalty applies, with further charges building the longer it remains outstanding.
What expenses can I claim on my Self Assessment?
It depends on your circumstances. Self-employed individuals can claim a broad range of business costs. Landlords can offset expenses such as repairs, letting agent fees, and professional costs against their rental income. Getting this right is where a qualified accountant makes a real difference.
What happens if I have made a mistake on a previous return?
Corrections can be made directly with HMRC within 12 months of the filing deadline. For anything older, a voluntary disclosure is usually needed. We review your previous returns, identify what needs fixing and handle everything on your behalf.
Can you help if I have not filed for several years?
Yes. It is a situation we come across regularly and it is always best to address it sooner rather than later. We will get your outstanding returns in order, manage the submissions, and deal with HMRC directly to keep penalties to a minimum.
What is Making Tax Digital for Income Tax and does it affect me?
Making Tax Digital is changing the way many self-employed individuals and landlords report their income to HMRC. Landlords and sole-traders will need to make quarterly digital updates to HMRC where their turnover meets the threshold (£50,000 for the 2026/27 tax year, £30,000 in 2027/28, and £20,000 in 2028/29). The changes are being phased in, so not everyone is affected at the same time. We will confirm whether it applies to you and get everything in place ahead of your deadline.
Do you offer online Self Assessment services?
Yes. We work with clients across the UK and can manage the entire process remotely. Documents can be shared securely online, meetings can be held by phone or video call, and we’ll guide you through everything from start to finish.
How much information do I need to provide?
That depends on your circumstances, but we’ll make the process as straightforward as possible. We’ll let you know exactly what information we need and guide you through anything that isn’t clear.
Most clients are pleasantly surprised by how simple the process becomes with the right support.