The Small Business Owner’s Guide to Tax-Deductible Expenses

The Small Business Owner’s Guide to Tax-Deductible Expenses

Running a small business means wearing a lot of hats, marketing manager, customer service rep, and sometimes even office cleaner. But one role that’s vital to get right is financial manager, especially when it comes to making the most of your tax-deductible expenses.

Whether you're a sole trader, freelancer, or limited company director, understanding what you can and can’t claim back on your tax return could save your business thousands. Here’s your straightforward guide to making tax-deductible expenses work for you.

What Are Tax-Deductible Expenses?

Put simply, tax-deductible expenses are the costs of running your business that HMRC allows you to subtract from your income when working out how much tax you owe. These are often referred to as “allowable expenses.”

The idea is that you only pay tax on your profits, not your turnover.

Common Tax-Deductible Expenses for Small Businesses

Here are some of the most common allowable expenses you might be able to claim:

1. Office and Workspace Costs

• Rent for business premises
• Utility bills (electricity, water, internet)
• Business rates
• Home office use (you can claim a flat rate or a proportion of your household bills)

2. Equipment and Supplies

• Computers, phones, and tablets
• Stationery and printer ink
• Software subscriptions
• Tools and machinery

3. Travel and Mileage

• Vehicle fuel and maintenance (if used for business)
• Train and bus fares
• Parking charges and tolls
• Hotel stays and meals while travelling for work

Tip: If you use your personal vehicle for work, you can claim a flat mileage rate instead of tracking every fuel receipt.

4. Marketing and Advertising

• Website hosting and design
• Social media advertising
• Business cards and promotional materials
• Photography and branding services

5. Professional Services

• Accountants (yes, your accountant’s fees are tax-deductible!)
• Solicitors
• Consultants
• Business training courses

6. Staff Costs

• Employee wages
• Employer’s National Insurance contributions
• Pensions and benefits
• Freelancers or subcontractors

7. Banking and Financial Costs

• Business insurance
• Interest on business loans
• Bank charges on your business account
• Payment processing fees (e.g. Stripe or PayPal)

What You Can’t Claim

Not everything qualifies as a business expense. Here are a few things that won’t make the cut:

• Personal expenses (even if you sometimes use it for work)
• Client entertainment (like taking a customer out for lunch)
• Fines or penalties (like speeding tickets)
• Everyday clothes, even if you wear them to work (unless it’s a uniform or protective gear)

Keep Those Receipts!

The key to smooth sailing at tax time? Keep good records. Whether that’s digital copies or a good old-fashioned folder, make sure you:

• Track every business expense
• Log mileage or travel
• Keep invoices and receipts
• Use accounting software (or work with an accountant) to stay organised

Your next steps

Claiming tax-deductible expenses might feel daunting at first, but getting it right can significantly reduce your tax bill. And the good news? You don’t have to figure it all out alone.

At Perk Accounting, we help business owners across stay compliant, save money, and stress less when it comes to tax time. If you're unsure what you can claim, or just want someone to take it off your plate, get in touch. We’re here to help.