Welcome to the World of Self-Employment!

Hello there! Today, we are diving into one of the most practical and exciting parts of the ACCA Taxation (TX) syllabus: Income from Self-Employment. Whether you dream of starting your own business or plan to advise clients who do, understanding how the taxman views "being your own boss" is essential.

Don't worry if tax feels like a puzzle right now. We are going to break this down into small, manageable pieces. By the end of these notes, you'll understand how to turn a business's accounting records into a taxable profit figure that the HMRC (HM Revenue & Customs) is happy with.

1. Is it actually a Business? (The Badges of Trade)

Before we calculate tax, we have to decide: is this person actually "trading," or is it just a hobby? HMRC uses something called the Badges of Trade to decide.

Analogy: If you sell your old iPhone on eBay once, that's a hobby. If you buy 50 broken iPhones every month, fix them, and sell them for a profit, you are trading!

Key "Badges" to look out for:

  • Profit Seeking Motive: Did you intend to make money?
  • Number of Transactions: Is this happening regularly?
  • Nature of the Asset: Is it something that can only be turned into money (like a ton of industrial salt) or something for personal enjoyment (like a painting)?
  • Changes to the Asset: Did you repair or improve the item to make it sell for more?

Quick Tip: You don't need all the badges to be a trader. Even one strong badge (like a clear intent to make profit) can be enough!

2. Adjusting the Profit: Accounting vs. Tax

When a business prepares its accounts, it calculates Net Profit. However, the tax rules are different from accounting rules. To get to the Taxable Trading Profit, we start with the Net Profit and make "Adjustments."

The Adjustment Formula

The basic logic is: \( \text{Adjusted Profit} = \text{Net Profit} + \text{Disallowable Expenses} - \text{Non-trading Income} \)

Items to ADD BACK (Disallowable Expenses)

These are things the business spent money on that the taxman says "No, you can't deduct that for tax purposes!"

  • Depreciation: This is an accounting estimate. Tax uses Capital Allowances instead. Always add depreciation back!
  • Personal/Private Expenses: If the owner pays their home electricity bill from the business account, add it back.
  • Entertaining: Generally, entertaining customers is not allowed. (Entertaining employees is usually okay).
  • Fines and Penalties: Parking tickets or late tax penalties are not allowed. (Except for some very minor employee-related fines).
  • Capital Expenditure: Buying a van or a computer is "Capital." You can't deduct the whole cost at once as an expense; you use Capital Allowances instead.

Items to DEDUCT (Income not from trading)

If the business received money that isn't from selling their goods/services, we take it out because it will be taxed elsewhere.

  • Bank Interest Received: This is "Savings Income," not "Trading Income."
  • Rental Income: This is "Property Income."
  • Profit on Sale of Assets: This is usually a "Capital Gain."

Did you know? HMRC is quite strict about "Wholly and Exclusively." An expense must be incurred wholly and exclusively for the purpose of the trade to be deductible!

3. Capital Allowances: The "Tax Version" of Depreciation

Since we added back Depreciation, we need to give the business some relief for buying equipment. We do this through Capital Allowances.

The Annual Investment Allowance (AIA):

This is a generous "gift" from the government. It allows a business to deduct 100% of the cost of most plant and machinery (like tools, computers, and vans) up to \( \$1,000,000 \) per year.

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Writing Down Allowance (WDA):

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If the AIA is used up, or for things that don't qualify for AIA (like cars), we use a percentage:

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  • Main Pool (18%): Most machinery, equipment, and vans.
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  • Special Rate Pool (6%): Integral features of a building (like lifts or air conditioning) and high-emission cars.
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Important Note on CARS: Cars never get AIA. They always go into a pool and get 18% or 6% WDA based on their \( CO_2 \) emissions.

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4. Basis Periods: When do we tax the profit?

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Don't worry if this seems tricky at first! The rules have recently simplified. For ACCA TX exams moving forward, we are moving to the Tax Year Basis.

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The Rule: We tax the profits that actually arise during the tax year (6 April to 5 April).

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If a business has an accounting year-end that isn't 5 April (e.g., 31 December), we have to "apportion" the profits.

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Example: If a business makes \( \$12,000 \) profit for the year ended 31 December 2024, and we want the profit for the 24/25 tax year, we take the relevant months from the 2024 accounts and the 2025 accounts to fit the 6 April – 5 April window.

5. National Insurance Contributions (NICs) for the Self-Employed

Self-employed people don't just pay Income Tax; they also pay National Insurance. For the self-employed, there are two types you need to know:

  • Class 2: Usually a flat weekly rate (though often effectively abolished or simplified for many, always check the specific tax year rates provided in your exam's tax tables).
  • Class 4: This is calculated as a percentage of your Taxable Trading Profits.

\( \text{Class 4 NIC} = (\text{Profit} - \text{Lower Threshold}) \times \text{Rate} \)

6. Summary and Quick Review

Let's recap the journey of a self-employed person's income:

  1. Check the Badges of Trade to ensure they are actually trading.
  2. Start with Net Profit from the accounts.
  3. Add back disallowable items (Depreciation, Private Use, Entertaining).
  4. Deduct non-trading income (Interest, Rental income).
  5. Deduct Capital Allowances (AIA, WDA) to get the final Taxable Trading Profit.
  6. Apply the Basis Period rules to see which tax year those profits fall into.
  7. Calculate Income Tax and NICs (Class 2 & 4) on that profit.

Common Mistake to Avoid: Don't forget the Private Use adjustment! If a business owner uses their car 20% for personal trips, you can only claim 80% of the Capital Allowances and 80% of the running costs. The 20% private part must be added back.

Key Takeaway:

Taxable Trading Profit is NOT the same as Accounting Profit. Always adjust for Depreciation and Capital Allowances first!