As a sole trader, your mobile phone is your business. Getting a dedicated business contract — rather than using a personal plan — can save you money through tax deductions, better rates, and business-specific features that personal plans do not offer.
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This guide covers what sole traders need to know about business mobile contracts: eligibility, tax benefits, which providers offer the best value for one-person businesses, and how to avoid overpaying. All pricing verified as of February 2026.
- Business mobile contracts save sole traders £10–£25/month vs consumer plans - after VAT reclaim (20% for VAT-registered) and tax-deductible expense benefits
- SIM-only business plans start from £6/month - ideal if your current handset is under 3 years old and still performs well
- EE offers the best UK network coverage for sole traders - from £10/month with 5G included and the widest rural coverage of any UK provider
- Separate business and personal numbers on one phone - most providers offer dual-SIM support or apps that give you a second business number
- 12-month contracts offer the most flexibility - avoid 24-month lock-ins unless the per-month saving is significant (£5+ difference)
Why Sole Traders Should Get a Business Mobile Contract
A business mobile contract lets sole traders claim the full business portion as a tax-deductible expense, access business-only rates, and separate work from personal calls cleanly.
Many sole traders use personal phone contracts for business. This works, but you lose three significant advantages:
- Tax deductions: A dedicated business contract is fully deductible as a business expense (the business-use portion). With a personal contract, you can only claim a percentage, and the rules are stricter.
- Business rates: Business SIM-only plans start from £10/month (EE) — comparable to personal plans but with extras like Microsoft 365, UK-based support, and Stay Connected Data included.
- Clean separation: Having a separate business number makes accounting simpler, looks more professional to clients, and means you can switch off work calls outside hours.
Eligibility: What You Need to Apply
Sole traders need a UTR number (or self-assessment registration), proof of identity, proof of address, and pass a personal credit check to get a business mobile contract.
Applying for a business mobile contract as a sole trader is simpler than most people expect. You need:
- UTR number: Your Unique Taxpayer Reference from HMRC, issued when you register for self-assessment
- Proof of identity: Passport or driving licence
- Proof of address: Utility bill or bank statement (within last 3 months)
- Credit check: Providers check your personal credit (sole traders do not have separate business credit)
Most applications are approved instantly online. If your credit score is lower, you may be offered a smaller data allowance or asked for a deposit — but you will rarely be refused entirely.
Best Providers for Sole Traders
EE Business is the best overall for sole traders at £10/month SIM-only, O2 Business offers the most flexibility with 30-day rolling contracts from £13/month, and Three is cheapest for unlimited data at £20/month.
| Provider | SIM-Only From | Best For | Contract Options | Key Extra |
|---|---|---|---|---|
| EE Business | £10–£12/mo | Reliability + extras | 12–36 months | Microsoft 365 included |
| O2 Business | From £13/mo | Maximum flexibility | 30 days–36 months | Flex Plan (auto data scaling) |
| Vodafone Business | £15–£20/mo | International travel | 12–24 months | 83-country roaming |
| Three Business | From £20/mo | Unlimited data | 12–24 months | 600GB fair use, hotspot |
EE Business — Best Overall for Sole Traders
EE’s SIM-only plans start from £10–£12/month — often cheaper than personal plans after you factor in the included Microsoft 365 subscription (worth £10+/month separately). You get the UK’s most reliable 5G network, UK-based customer support, and Stay Connected Data that keeps you online at reduced speed if you exceed your allowance. For a sole trader who relies on email, Maps, and occasional video calls, this is the best value available.
O2 Business — Best for Flexibility
O2’s 30-day rolling contracts are ideal for sole traders with unpredictable income or workloads. You can upgrade, downgrade, or cancel monthly without penalty. The Flex Plan automatically adjusts your data tier based on actual usage, preventing bill shock. At £13/month, it is slightly more expensive than EE but the flexibility premium is worth it for freelancers and seasonal businesses.
Vodafone Business — Best for International Work
If you travel internationally for work — client meetings abroad, trade shows, or remote working from Europe — Vodafone’s roaming is unmatched. The Business Traveller pass costs £2.50/day in Europe or £5/day worldwide. Top-tier plans include roaming in 83 countries. For UK-only sole traders, Vodafone’s higher base price (£15–£20/month) makes it harder to justify. For a direct head-to-head on pricing, 5G coverage, and roaming, see our EE vs Vodafone business mobile comparison.
Three Business — Best for Heavy Data Users
At £20/month for unlimited data, Three is the cheapest option for sole traders who use large amounts of mobile data — video calls, hotspot tethering, large file uploads. The 600GB fair use cap is practically unlimited. The trade-off is weaker rural coverage compared to EE.
For detailed reviews of each provider, see our best business mobile deals guide.
For most sole traders, EE at £10–£12/month with Microsoft 365 included is the best deal. If you need month-to-month flexibility, O2 at £13/month with rolling contracts is the safer choice.
Tax Benefits for Sole Traders
Sole traders can claim business mobile costs as an allowable expense, reducing taxable profit. A dedicated business contract simplifies this compared to splitting a personal phone bill.
HMRC allows sole traders to deduct business mobile costs from taxable income. Here is how it works:
- Dedicated business contract: If you have a separate business phone, you can claim the full contract cost as a business expense (assuming 100% business use). If there is some personal use, you need to estimate the split and claim only the business portion.
- Personal contract with business use: You can only claim the proportion of calls and data used for business. This requires detailed records of business vs personal usage — more work, less straightforward.
- VAT recovery: If you are VAT registered, you can reclaim VAT on the business portion of your mobile bill. Business contracts show VAT clearly on invoices; personal contracts make this harder.
Example: EE Business at £12/month = £144/year. At the basic income tax rate (20%), claiming this as a business expense saves you £28.80/year in tax. At higher rate (40%), the saving is £57.60/year.
A dedicated business mobile contract simplifies HMRC claims and maximises your tax deduction. Keep itemised bills as evidence in case of a tax investigation.
SIM-Only vs Handset: What Is Better for Sole Traders?
SIM-only is almost always better for sole traders — lower monthly cost, shorter contracts, and you can use your existing phone or buy one outright for better total cost.
For a single-line contract, the maths is simple. SIM-only at £10–£12/month vs handset at £36+/month means you save £24+/month (£288+/year). Even if you buy a new phone outright for £400–£800, you break even within 12–18 months and save from then on.
Handset contracts only make sense if you cannot afford the upfront device cost and need to spread payments. Even then, consider a separate device finance agreement (e.g., Klarna or Apple monthly payments) combined with a cheaper SIM-only plan — the total is often less.
For a detailed cost comparison, see our SIM-only vs handset contracts guide.
How to Switch From a Personal to Business Contract
Request a PAC code from your current provider, give it to your new business provider, and your number transfers within 1–2 working days with no downtime.
- Check your current contract: If you are in a fixed-term contract, leaving early means paying remaining months. Wait until your contract ends or calculate whether the business savings offset the early exit fee.
- Request a PAC code: Text “PAC” to 65075 from your current phone. Your provider must respond within one working day. The code is valid for 30 days.
- Apply for a business contract: Apply online with your chosen provider. Provide the PAC code during sign-up to keep your existing number.
- Number transfers automatically: Your number moves to the new business contract within 1–2 working days. There is typically no service interruption.
Switching is straightforward and usually takes 1–2 working days. The PAC process ensures you keep your existing number. Wait for your personal contract to end to avoid early termination fees.
Compare Business Mobile Quotes
Even as a sole trader, you can access business-only rates and deals. Get tailored quotes to compare providers on your specific usage pattern and budget.
Published pricing gives you a baseline, but providers sometimes offer better rates or extras for new business customers. The fastest way to find the best deal for your specific needs is to compare quotes.
For a full provider comparison, see our best business mobile deals guide. For help deciding between SIM-only and handset options, see our SIM-only vs handset contracts guide.
Last updated: February 2026. Prices verified against provider websites. ExpertSure is reader-supported — we may earn a commission through partner links at no extra cost to you.
