Can You Claim Broadband as a Business Expense in 2026? | UK Self-Employed & Limited Company Guide Quick answer:
Yes, in 2026, you can usually claim broadband as a business expense in the UK, but only the business use part (unless it’s a dedicated business line). Self-employed people must apportion mixed use between business and personal; limited companies can deduct the full cost of a company broadband contract, but personal use may be treated as a benefit in kind if it isn’t incidental.
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Contents
How to Claim Broadband as a Business Expense
How Do Business Expenses Work?
How to Claim Broadband as a Business Expense
Broadband expense comparison
Tips For Claiming Broadband as a Business Expense
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Authored by: Ally Cox (Business Technology & B2B Services Specialist 10+ Years’ Experience)
Reviewed by: James Ward (Telecoms Specialist, 12+ Years Experience)
Last Updated: December 2025
Key takeaways
Yes, you can usually claim broadband, but only the business portion unless it’s a dedicated business line.
Self-employed: claim a reasonable % of your home broadband that reflects actual business use.
Limited companies: best practice is a company broadband contract; heavy personal use can trigger benefit in kind rules.
Evidence is everything so keep clear records of how you calculated your business percentage.
For most SMEs, broadband is a core utility, claiming it correctly helps keep your tax bill down without causing HMRC issues.
If you’re ready to reduce your costs as well as your tax bill, you can compare business broadband deals here and find a package that suits your usage and budget
What is a broadband business expense? Broadband counts as a business expense when it’s used “wholly and exclusively” for running your business – for example:
Doing client work and research
Running cloud apps and video calls
Managing your website, marketing or online shop
HMRC classes it as an allowable expense if it’s genuinely for business and not mainly personal. Where you use the same connection for both, you’ll usually need to split the bill between business and personal use.
How to Claim Broadband as a Business Expense
Keep a record of how much you use the broadband for business purposes – here is a convenient working-from-home tax relief calculator .
Divide your total business usage by total usage (business + personal) to find the business percentage.
When claiming your expenses, use the calculated business percentage to determine the deductible amount for your broadband bill.
Feature Self-Employed Limited Company
Claiming Method
The business portion is claimed as a tax-deductible expense on the self-assessment tax return.
Broadband bills are paid directly by the company
Tax Benefit
Reduces income tax liability
Reduces corporation tax liability
Record Keeping
Need to track business usage and calculate business percentage of the bill
Simpler record keeping – no need to separate business and personal usage
Dedicated Line
The entire cost of a dedicated business line is claimable
N/A
How Do Business Expenses Work? If you’re running your own business, various operational expenses must be considered. However, you can deduct certain costs to calculate your taxable profit, provided they qualify as allowable expenses. For example, office rent, equipment purchases, and utility bills can often be claimed as business expenses. However, personal expenses such as meals and entertainment are generally not deductible.
For instance, let’s say your business generates a turnover of £40,000, and you claim £10,000 in allowable expenses. In this scenario, you’ll only be taxed on the remaining £30,000, which constitutes your taxable profit.
It’s important to note that allowable expenses are costs that are incurred ‘wholly and exclusively’ for the purpose of your business. They don’t include funds withdrawn from your business for personal purchases. For example, if you use your home broadband for both personal and business purposes, you can only claim the portion that is used for business.
If you’re operating as a limited company, the rules are slightly different. Here, you’re allowed to deduct all business expenses from your profits before calculating tax. However, any item you use personally from the company’s resources must be reported as a company benefit.
How to Claim Broadband as a Business Expense: Self-Employed vs. Limited Company Self-Employed: Claiming Broadband Expenses
What can you claim?
If you’re self-employed and use your home broadband for business purposes, you can claim a portion of the cost as an allowable expense. The amount you can claim should reflect the percentage of your broadband usage that is for business.
How to calculate
Determine your business usage: Estimate the percentage of your broadband use that is for business.
Apply the percentage: Multiply your total broadband bill by the business usage percentage to find the deductible amount.
Example: If your monthly broadband bill is £40 and you use it 50% for business, you can claim £20 as a business expense.
Record keeping
Maintain records that justify your business usage estimate, such as work schedules or logs of online activity related to your business.
Limited Companies: Claiming Broadband Expenses
Business Broadband Contracts
If your limited company sets up a broadband contract in the company’s name, you can claim the full cost as a business expense. HMRC accepts that there may be some personal use, but it’s generally considered negligible.
Residential Broadband Contracts
If the broadband contract is in your personal name and you use it for business:
You can only claim the additional costs incurred for business use.
You must be able to demonstrate that the expense is “wholly and exclusively” for business purposes.
Personal use must be incidental.
Is it worth claiming broadband as a business expense? For most UK SMEs and freelancers, yes, as long as you can justify it.
When it’s worth claiming:
You work from home regularly and rely on broadband for your income.
You have a separate business connection (e.g. business fibre to your office).
Your business broadband bill is a meaningful monthly cost.
Even small monthly claims add up over a year and reduce your taxable profit.
When to be cautious:
You mostly use broadband for personal streaming/gaming, with minimal business use.
You can’t reasonably evidence your business percentage.
Your company is paying a personal home contract with heavy non-business use.
If in doubt, a quick chat with an accountant is almost always cheaper than getting it wrong.
Broadband expense comparison table (2026)
Scenario Who you are Whose name is the broadband in? What can you usually claim?
Home broadband for mixed use
Self-employed
Your personal name
Business proportion only (e.g. 50% of bill)
Dedicated business line at home
Self-employed
Business account in your name / trading name
Often 100% of cost, if used just for business
Office broadband (no personal use)
Limited company
Company name
100% of the bill
Home broadband, reimbursed by company
Limited company
Director’s personal name
Only extra business-only costs – otherwise likely a benefit in kind
Mobile/4G data used for work
Either
Personal or company
Business proportion (self-employed) or full cost (company contract)
Tips For Claiming Broadband as a Business Expense
Seperate your contracts where you can
Keep detailed records of everything
Consult a professional if in doubt.
Here are some HMRC guidelines on claiming phone and broadband costs:
FAQs: claiming broadband as a business expense 1. Can I claim 100% of my home broadband as a business expense?
Usually no, unless it is genuinely used only for business and you have a separate connection for personal use. In most cases, HMRC expects you to apportion home broadband between business and personal use and only claim the business part.
2. How do I claim broadband on my Self Assessment tax return?
If you’re self-employed:
Work out your business percentage of broadband use.
Multiply that by your annual broadband cost.
Enter the result under “expenses” (usually in the “phone, fax, internet and other office costs” category).
Keep your calculations and bills in case HMRC asks for evidence.
3. Can my limited company pay for my home broadband?
It can, but the tax treatment depends on the setup:
If the contract is in the company’s name, the company can usually claim the full cost.
If the contract is in your personal name and the company reimburses you, only extra business-only costs are normally allowable; otherwise, it may be treated as a benefit in kind.
Always check this with your accountant before changing who pays the bill.
4. Can I claim mobile data as a business expense too?
Yes. Mobile data used for business can be claimed in a similar way:
Self-employed: apportion your mobile bill between business and personal use.
Limited company: a company mobile contract used mainly for business is typically fully deductible; substantial personal use can be a taxable benefit.
5. Do I need receipts and detailed logs for broadband claims?
You should keep:
All broadband invoices and contracts
A simple record showing how you calculated the business percentage (e.g. notes on working hours or usage)
You don’t normally need minute-by-minute logs, but your method must be reasonable and defensible if HMRC queries it.
6. Is business broadband better than home broadband for tax?
From a tax perspective, the main advantage of business broadband is clarity:
It’s easier to show the cost is wholly and exclusively for business.
Business contracts may include static IPs, better SLAs and support, which are helpful for SMEs.
However, you still need to consider value for money on price, speed and contract length as well.
7. Where can I read the official HMRC rules?
You can find detailed guidance in HMRC’s manuals and help pages, including sections on:
Expenses if you’re self-employed
Working from home
Telephone, mobile and broadband costs
These set out how “wholly and exclusively” rules apply in practice and are useful to share with your accountant.
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Hi, I’m Ally Cox , a senior copywriter and blogger at CompareYourBusinessCosts.co.uk, the UK’s trusted platform for comparing business services.over a decade of experience in the B2B sector, I specialise in simplifying complex topics like leased lines, VoIP, business energy, HR and payroll solutions, accounting software, and EPOS systems .HR, copywriting, and business operations- from clocking-in systems to card machines and office technology .informed, confident decisions when choosing products and services that improve efficiency and save money.
