Sole trader simplified expenses: when they save you money

What are simplified expenses?

Simplified expenses are flat-rate deductions that HMRC allows sole traders and partnerships to use instead of calculating actual business costs. They cover three areas: vehicles, working from home, and living in your business premises. The idea is straightforward: instead of tracking every receipt and splitting costs between business and personal use, you claim a fixed amount per mile, per month, or per person. This system is designed to make life easier for small business owners and self-employed individuals who might not have the time or resources to keep detailed financial records.

Many sole traders find simplified expenses particularly appealing because they reduce the administrative burden. Keeping meticulous records of every expense can be time-consuming and stressful, especially when balancing the demands of running a business. By opting for simplified expenses, you can focus more on your work rather than bookkeeping. However, it is essential to understand when these flat rates are beneficial and when they might not serve your financial interests as effectively as actual cost calculations.

Vehicle expenses: flat rate vs actual costs

The simplified expenses rate for business mileage is:

• 45p per mile for the first 10,000 business miles per year
• 25p per mile for each business mile above 10,000

This covers fuel, insurance, road tax, servicing, repairs, and depreciation. You cannot claim any of these separately if you use the flat rate. However, you can still claim parking fees and congestion charges on top of the mileage rate. This means if you frequently travel into London or other congested areas, you can still recover those costs.

Actual costs work differently. You track all your vehicle expenses for the year, then claim the business proportion based on your mileage records. For example, if 80% of your miles are business-related, you claim 80% of all vehicle costs. This method requires more effort in terms of record-keeping but can lead to higher deductions if your vehicle expenses are significant.

Which is better? It depends on your vehicle costs and mileage. A tradesperson driving a new diesel van with high running costs, such as insurance, servicing, and depreciation, will usually save more by claiming actual costs plus capital allowances. Conversely, someone driving an older, cheap-to-run vehicle with fewer miles may find simplified expenses give a bigger deduction. Use the mileage calculator to compare both methods for your situation.

How to calculate actual vehicle costs

Calculating actual costs requires meticulous record-keeping but can yield substantial savings. Here’s a step-by-step guide:

1. Keep all receipts for fuel, servicing, repairs, insurance, tax, and MOT. These documents are crucial as they form the basis of your expense claims.
2. Maintain a detailed mileage log. Note the purpose, date, and distance of each journey. This log is essential to justify the business proportion of your vehicle costs.
3. Calculate the total mileage and the business proportion. For example, if you drive 12,000 miles in a year and 9,000 are for work, your business mileage proportion is 75%.
4. Apply the business mileage percentage to all vehicle-related costs. For example, if your total vehicle costs are £4,000 for the year, you can claim £3,000 as business expenses.
5. Claim capital allowances if applicable, using tools like the capital allowances calculator. This step can significantly reduce your taxable income, especially in the first year of purchasing a new vehicle.

This method suits those who are organised and have higher vehicle running costs. The effort required can pay off with substantial tax savings, especially for those with newer vehicles or those who drive many business miles.

Working from home: flat rate deduction

If you work from home for at least 25 hours per month on business administration tasks like invoicing, quoting, record keeping, and scheduling, you can claim a simplified expense rate. The rates are as follows:

• 25 to 50 hours per month: £10 per month
• 51 to 100 hours per month: £18 per month
• 101+ hours per month: £26 per month

These amounts are small but require zero evidence of actual costs. The alternative is calculating the actual proportion of your household costs, including rent or mortgage interest, council tax, electricity, gas, broadband, and water that relates to business use. This is more work but usually yields a bigger deduction.

For most tradespeople who spend evenings and weekends on admin, the flat rate gives an annual deduction of £120 to £312. Actual costs typically provide a deduction of £500 to £1,500, depending on your home and how much space you use for business. If you have a dedicated office space or use a significant portion of your home for work, calculating actual costs might be worth the effort.

Determining your actual home working costs

To calculate actual costs:

1. Identify the rooms used for business and calculate their proportion relative to the whole house. For example, if one room out of five is used as an office, you can allocate 20% of your household costs to business use.
2. Record your monthly utility bills and rent or mortgage interest. These costs form the basis of your deductions.
3. Apply the business-use percentage to each bill. This calculation will give you the amount you can deduct as business expenses.
4. Claim the total as your working from home deduction. This figure can often be larger than the flat rate, making it worthwhile for those with significant expenses.

This method is more time-consuming but can be beneficial for those with significant home office expenses. The larger deduction often justifies the additional effort involved in keeping detailed records.

Living in your business premises

If you live above your shop or in a property that is primarily your business premises, you can claim a flat-rate deduction for private use instead of splitting all costs. The rates depend on how many people live there. This scenario is less common for tradespeople but relevant if you run a workshop or yard with accommodation.

Understanding the rates for living in business premises

This deduction is advantageous for those who combine living and working spaces. It simplifies the process considerably, allowing you to focus on the business aspects of your premises without needing to allocate costs meticulously between personal and professional use.

The catch: you cannot switch back easily

Once you use simplified expenses for a vehicle, you must continue using simplified expenses for that vehicle for as long as you use it in your business. You cannot switch to actual costs partway through. This matters because capital allowances, particularly the Annual Investment Allowance, on a new van can give a much larger deduction in the first year than the mileage rate. Therefore, it's important to consider the long-term implications before deciding.

For working from home, you can switch between simplified and actual costs each tax year. There is no lock-in. This flexibility allows you to adapt your approach based on changing circumstances or as your business and home situation evolves.

Who simplified expenses suit best

Simplified expenses work well if you:

• Drive an older, low-value vehicle with modest running costs
• Do relatively low business mileage (under 10,000 miles)
• Want to spend minimal time on record keeping
• Use cash basis accounting, which pairs naturally with simplified expenses

They are less suitable if you have a new or expensive vehicle, do high mileage, or want to claim the AIA on a van purchase. Run the numbers for your specific situation before committing. It's often beneficial to carry out a detailed analysis to ensure that the simplified approach genuinely saves you money compared to actual cost calculations.

FAQs

Can I use simplified expenses for my van and actual costs for working from home?

Yes. You can mix and match between the three categories. Use simplified for vehicles and actual for working from home, or any other combination. This flexibility allows you to optimise your deductions based on which method benefits you most in each category.

Do I need to keep mileage records?

Yes. Even with simplified expenses, you must keep a record of your business miles to support your claim. Log the date, destination, purpose, and miles for each business journey. Apps like InvoiceAdept can track this automatically, reducing the administrative burden and ensuring accuracy.

Can a partnership use simplified expenses?

Yes, but vehicle expenses are claimed per partner, not per partnership. Each partner claims for their own vehicle. Working from home is also per partner. Living in business premises is claimed once for the partnership. This approach respects the individual contributions and expenses of each partner.

Are there any tools to help calculate expenses?

Yes, there are several tools available such as the day rate calculator, invoice generator, and VAT calculator. These can assist in managing and calculating various business expenses efficiently. Utilising these tools can save time and improve the accuracy of your financial records.

How do simplified expenses affect tax returns?

Simplified expenses are reported on your self-assessment tax return. They streamline the process by reducing the need for detailed records, making your annual filing quicker and potentially lowering your tax bill. This simplicity can be particularly valuable during the busy tax season, allowing you to focus on other aspects of your business.