Trading Allowance for Sole Traders: MTD Q1 Explained

What Is the Trading Allowance?

If you are a sole trader filing quarterly updates under Making Tax Digital for Income Tax (MTD for Income Tax), you might be sitting on a simple deduction that cuts your taxable profit by up to £1,000 - without keeping a single receipt. It is called the trading allowance, and it is one of the most overlooked tools available to self-employed people in the UK.

This guide explains exactly what the trading allowance is, when it makes sense to claim it, how it works inside an MTD quarterly update, and what happens when your income is close to the £1,000 mark. There are worked examples throughout so you can see the numbers in action.

The Basics: What the Trading Allowance Actually Is

The trading allowance is a flat £1,000 deduction available to sole traders. Instead of listing every individual business expense you have incurred, you can simply deduct £1,000 from your gross self-employment income (your income before any deductions). The result is your taxable profit for that period.

HMRC introduced this allowance to reduce admin for people with small or simple self-employment income - side jobs, casual work, selling handmade goods, freelance projects, and similar activities.

The key point: you cannot claim the trading allowance and itemised expenses at the same time for the same income source. It is one or the other. You choose whichever gives you the better outcome.

Who Can Claim It?

You can use the trading allowance if:

• You are a sole trader (self-employed individual) with trading income.
• Your gross trading income for the tax year is more than £0 (if it is £0 there is nothing to deduct).
• You have not elected to use simplified expenses under a different method that conflicts with this approach.

You cannot use the trading allowance if:

• The income comes from a business partnership you are part of.
• You received the income from an employer you work for (or a connected person or company).
• Your actual business expenses are higher than £1,000 - in that case claiming the allowance would cost you money.

Trading Allowance vs Itemised Expenses: Which Should You Choose?

This is the practical decision that matters. The rule is straightforward: whichever reduces your taxable profit more is the right choice.

When the trading allowance wins

If your actual, allowable business expenses for the period are less than £1,000, the trading allowance gives you a bigger deduction. You also avoid the effort of categorising and recording every expense.

When itemised expenses win

If your actual business expenses are more than £1,000 - tools, software subscriptions, home office costs, mileage, professional fees - you will reduce your taxable profit more by listing them individually.

Worked example 1: Trading allowance is better

Sara is a freelance proofreader. Over the 2026-27 tax year she earns £16,800 in gross income. Her only business expenses are a £15 monthly subscription for editing software and a £60 office chair - totalling £240 for the year.

• Using itemised expenses: £16,800 - £240 = £16,560 taxable profit
• Using trading allowance: £16,800 - £1,000 = £15,800 taxable profit

The trading allowance saves Sara more. She should use it. (The comparison is always made on the full year's figures, because the allowance is £1,000 per tax year, not per quarter.)

Worked example 2: Itemised expenses are better

Dan is a self-employed electrician. Over the year he earns £34,000. He spends £7,200 on materials, £880 on fuel, and £320 on tools - totalling £8,400 in expenses.

• Using itemised expenses: £34,000 - £8,400 = £25,600 taxable profit
• Using trading allowance: £34,000 - £1,000 = £33,000 taxable profit

Dan's real expenses are higher than £1,000. He should claim itemised expenses.

Worked example 3: Income under £1,000

Priya sells handmade cards online alongside her main business. Her card sales for the whole year come to £620, with around £90 in materials.

If gross trading income for the year is £1,000 or less, the trading allowance means it is tax-free (you cannot use it to create a loss - it simply reduces profit to nil, not below).

However, if she is in MTD, she still reports the income in her quarterly updates. The exemption from income tax does not mean the income disappears from reporting.

How the Trading Allowance Appears in Your MTD Quarterly Update

Under MTD for Income Tax, you report income and expenses for each quarter digitally using compatible software. The quarterly update does not calculate your final tax bill - it is a running record of your income and expenses that feeds into your final declaration at the end of the tax year.

Here is how the trading allowance fits into that process.

In your quarterly update form

When you complete a quarterly update for self-employment income, you will typically see fields for:

• Gross income (your total earnings for the quarter before any deductions)
• Expenses (itemised by category, or a single consolidated figure if turnover is under £90,000)

If you plan to use the trading allowance, you still enter your gross income as normal each quarter. The allowance itself is claimed once a year, in your annual adjustments.

You do not split the £1,000 allowance across quarters. The allowance is an annual figure. You claim it in your annual adjustments before the final declaration, rather than quarter by quarter. What you are doing in each quarterly update is recording your actual income and expenses as accurately as possible. The allowance election itself is confirmed when you finalise your return.

Practical step-by-step for a quarterly update

1. Log into your MTD software and open the current quarterly update.
2. Enter your gross income for the quarter - every pound you received from self-employment, before any deductions.
3. Record any actual expenses you have - you can decide at year end whether the trading allowance gives a better result.
4. If using itemised expenses, enter each expense in the appropriate category. If you are unsure which category fits, see our guide to allowable expenses for MTD.
5. Make a note if you expect to claim the trading allowance, so you remember to choose it in your annual adjustments.
6. Review the summary and submit before the quarterly deadline.

For a full walkthrough of the submission process, see our step-by-step guide to submitting your Q1 MTD quarterly update.

Common Mistakes to Avoid

Claiming both the allowance and expenses

You cannot deduct £1,000 plus your actual expenses. It is one or the other. If you claim the allowance in your annual adjustments, your itemised expenses are not deducted as well. If you need to correct a quarterly update, see our guide on amending your Q1 MTD update.

Assuming it applies automatically

The trading allowance is not applied automatically. You need to elect to use it. If you simply leave your expenses fields blank, HMRC will not assume you meant to claim the allowance - it will tax you on your full gross income. Always claim it explicitly in your annual adjustments.

Mixing it across income types

If you have both self-employment and rental income, the trading allowance covers only your self-employment income. The property allowance covers rental income separately. They do not cross over. See our post on multiple income sources and MTD if this applies to you.

Switching method mid-year

You should be consistent throughout the tax year. Record your actual income and expenses in every quarterly update, then make the allowance decision once, for the whole year. If your circumstances change significantly - say, your expenses jump above £1,000 - make a note and discuss it with an accountant before your final declaration.

Record-Keeping When Using the Trading Allowance

One of the appeals of the trading allowance is less paperwork. If you elect to use it, you do not need to keep receipts for individual business expenses. However, you must still keep records of your income - invoices, bank statements, payment records. HMRC can ask to see these.

You also need to keep records for long enough to demonstrate your gross income figures if HMRC ever questions them. For most sole traders, that means at least five years after the January filing deadline for the relevant tax year. See our post on HMRC record-keeping standards for MTD for the full picture.

Does It Change Between Quarters?

The trading allowance is an annual election, not a quarterly one. But your quarterly updates feed the data that makes that election meaningful. You record your actual income each quarter. At the end of the year, when you complete your final declaration, you confirm whether you used the trading allowance or itemised expenses.

This means you have some flexibility. You track income throughout the year via quarterly updates. When you reach the final declaration, you can assess your total annual expenses and decide then whether the trading allowance or itemised expenses gives you the better outcome for the full year.

That said, being organised from Q1 helps. If you suspect the trading allowance will apply, it is worth recording your gross income accurately each quarter and keeping a rough note of your expenses. That way you have all the data you need at year end, whatever you decide. See our guide to Q1 allowances and adjustments for more on this approach.

When the Decision Is Genuinely Close

If your actual business expenses for the year are hovering around £1,000, it is worth calculating both options precisely before your final declaration. Small differences in either direction can affect how much tax you owe.

For example, if your annual expenses are £980, the trading allowance gives you £20 more deduction - a small but real saving. If they are £1,050, itemised expenses win by £50. Run the numbers. It takes five minutes and can save you money.

If you use Affordable MTD, you can import your expenses via CSV and let the categorisation tools help you total them quickly. See our CSV upload and categorisation guide for how that works.

Summary

The trading allowance is a simple but genuinely useful deduction for sole traders. It replaces itemised expenses with a flat £1,000 annual deduction - no receipts, no categorisation, no complexity. It works well for sole traders with low expenses: side income, casual work, small freelance projects. If your expenses are higher than £1,000, itemised expenses will serve you better. Under MTD for Income Tax, you record your income in each quarterly update as normal and confirm your allowance election at the final declaration stage. The key habits are: record your gross income accurately every quarter, keep income records even when using the allowance, and do not claim both the allowance and itemised expenses at the same time.