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Your Guide to Self-Employed Tax Filing

  • Writer: Jason Short
    Jason Short
  • Oct 13
  • 5 min read

Navigating the world of taxes can feel overwhelming, especially when you’re self-employed. Unlike traditional employees, you don’t have an employer handling your tax deductions. Instead, you’re responsible for keeping track of your income, expenses, and making sure you file everything correctly and on time. But don’t worry - with a bit of guidance, you can handle your tax filing confidently and avoid unnecessary stress.


In this guide, I’ll walk you through the essentials of filing self-employed taxes. I’ll share practical tips, clear explanations, and helpful examples to make the process easier. Whether you run a small business, work as a freelancer, or manage rental properties, this post is designed to help you stay on top of your tax responsibilities.



Understanding Filing Self-Employed Taxes


When you’re self-employed, you’re essentially running your own business. This means you need to report your income and expenses to HMRC and pay the right amount of tax. The process is different from being an employee because you don’t have PAYE (Pay As You Earn) deductions taken automatically.


Here’s what you need to know about filing self-employed taxes:


  • Register as self-employed: You must inform HMRC that you’re self-employed. This is usually done online and should be done as soon as you start working for yourself.

  • Keep accurate records: Track all your income and expenses carefully. This includes invoices, receipts, bank statements, and any other financial documents.

  • Submit a Self Assessment tax return: Each year, you’ll fill out a tax return detailing your earnings and allowable expenses.

  • Pay your tax and National Insurance: Based on your tax return, you’ll pay income tax and Class 2 and Class 4 National Insurance contributions.


For example, if you run a small landscaping business, you’ll need to record payments from clients and expenses like fuel, equipment, and materials. These expenses reduce your taxable profit, so keeping detailed records can save you money.


Eye-level view of a desk with a laptop and tax documents
Filing self-employed taxes with proper documentation


Key Steps to Filing Self-Employed Taxes Successfully


Filing your taxes doesn’t have to be complicated. Here’s a straightforward approach to help you stay organised and meet your deadlines:


  1. Register with HMRC

    You must register as self-employed within three months of starting your business. This can be done online through the government website.


  2. Maintain detailed records

    Use spreadsheets, accounting software, or even a simple notebook to track your income and expenses. Make sure to keep receipts and invoices for at least five years.


  3. Understand allowable expenses

    Expenses that are “wholly and exclusively” for your business can be deducted. Common examples include office supplies, travel costs, and business insurance.


  4. Complete your Self Assessment tax return

    The tax year runs from 6 April to 5 April the following year. You must submit your return by 31 January after the tax year ends if filing online.


  5. Pay your tax bill on time

    Late payments can lead to penalties and interest. You may also need to make payments on account if your tax bill is over a certain amount.


If you’re unsure about any step, consider consulting a professional accountant. They can help you maximise your deductions and avoid costly mistakes.


Close-up of a calculator and tax forms on a wooden table
Calculating taxes for self-employed individuals


How much can you earn without declaring yourself self-employed?


This is a common question, especially for those just starting out or doing occasional work. The truth is, if you earn money from self-employed activities, you generally need to declare it to HMRC. However, there are some thresholds and rules to keep in mind:


  • Trading Allowance: You can earn up to £1,000 per tax year from self-employed work without needing to declare it or register as self-employed. This is called the trading allowance.

  • Earnings above £1,000: If your income exceeds this amount, you must register as self-employed and complete a Self Assessment tax return.

  • Multiple small jobs: If you have several small jobs, add all the income together. If the total is over £1,000, you need to declare it.


For example, if you do occasional gardening jobs and earn £800 in a year, you don’t have to register or declare this income. But if you earn £1,200, you must register and file a tax return.


Remember, even if you don’t owe tax because your profits are low, you still need to report your income if it exceeds the allowance.


High angle view of a notebook with income and expense calculations
Tracking income to determine self-employment declaration requirements


Tips to Make Self-Employed Tax Filing Easier


Managing your taxes doesn’t have to be a headache. Here are some practical tips to simplify the process:


  • Use accounting software: Tools like QuickBooks, Xero, or FreeAgent can automate record-keeping and help you generate reports.

  • Separate business and personal finances: Open a dedicated business bank account to keep your transactions clear.

  • Set aside money regularly: Put aside a percentage of your income for tax payments to avoid surprises.

  • Keep digital copies of documents: Scan receipts and invoices to avoid losing important paperwork.

  • Stay informed about deadlines: Mark key dates in your calendar to avoid late filing penalties.


For instance, if you set aside 25% of your income as you get paid, you’ll have enough to cover your tax bill when it’s due. This simple habit can reduce stress and keep your finances healthy.



When to Seek Professional Help


While many self-employed individuals manage their taxes on their own, there are times when expert advice is invaluable. Consider consulting an accountant if:


  • Your business is growing and your finances are becoming more complex.

  • You’re unsure about which expenses you can claim.

  • You want to optimise your tax position and explore tax planning strategies.

  • You need help with VAT registration or other tax obligations.

  • You want peace of mind that your tax return is accurate and complete.


A good accountant can save you time and money. They can also provide personalised advice tailored to your business needs. If you’re in the Staines area, Short and Sons Accountants offer fair fixed fees and a friendly, approachable service designed for small businesses and landlords.


If you want to learn more about self-employed tax filing, they’re a great place to start.



Staying on Track with Your Taxes


Filing your taxes as a self-employed person is a key part of running a successful business. It might seem daunting at first, but with the right approach, it becomes manageable. Keep your records organised, understand your obligations, and don’t hesitate to ask for help when needed.


Remember, staying on top of your tax responsibilities protects your business and gives you peace of mind. You’re building something valuable, and managing your taxes well is part of that journey.


Take it one step at a time, and you’ll find that filing your self-employed taxes is just another part of your business routine.



If you want to explore more about managing your self-employed taxes or need expert advice, consider reaching out to professionals who understand your needs and can guide you every step of the way.

 
 

Staines-Upon Thames TW18 4AX, UK

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