Published: 3 March 2026 • Compare The Networks
As a sole trader, keeping personal and business expenses separate isn’t just good practice — it’s essential for staying on the right side of HMRC. A dedicated business mobile makes it easier to claim your phone costs as a tax expense, projects a more professional image to clients, and gives you access to exclusive business-only deals that often beat consumer prices. With business SIM only plans starting from just £6 per month, there’s never been a more affordable time to make the switch.
This guide covers everything sole traders need to know — from HMRC rules on claiming mobile expenses, to the best deals available in 2026, to whether a virtual landline could give your one-person business a more established feel.
Why Sole Traders Need a Separate Business Mobile
Many sole traders start out using their personal phone for business calls, texts, and data. It works — until you need to file a tax return. HMRC requires you to separate business and personal use if you want to claim your mobile costs. Having a dedicated business line eliminates the guesswork entirely.
Here are the key reasons to get a separate business mobile:
- Simpler tax claims — 100% of the contract cost is a legitimate business expense when the phone is used solely for work. No need to calculate percentages of personal vs business use.
- Professional image — Clients see a business number, not your personal mobile. Add a virtual landline number (a local or 0800 number that forwards to your mobile) for an even more professional look.
- Work-life balance — Turn off the business phone at the end of the day. No more client calls at 9pm on a Saturday.
- VAT reclaim — VAT-registered sole traders can reclaim the full 20% VAT on a business-only mobile contract.
- OFCOM protection — Business mobile contracts are regulated by OFCOM, giving you switching rights, transparent pricing, and complaint resolution.
HMRC Rules: Claiming Your Business Mobile as an Expense
HMRC allows sole traders to claim the cost of a business mobile phone as a business expense, reducing your taxable profit. Here’s how the rules work:
| Scenario | What You Can Claim | Evidence Needed |
|---|---|---|
| Dedicated business mobile (no personal use) | 100% of contract cost + handset | Business contract in your trading name |
| Personal phone used partly for business | Business percentage only | Itemised bills showing business calls |
| PAYG / top-ups for business | Actual business top-up amounts | Receipts for each top-up |
| Handset purchased outright | Capital allowance (AIA) | Purchase receipt |
The simplest approach is to have a separate contract exclusively for business. This way, you claim 100% with no apportionment headaches. Sole trader mobile deals start from just £6 per month for SIM only, making it a very affordable tax-saving move.
Important: If you use the simplified expenses flat rate for vehicles or working from home, you cannot also claim mobile phone costs under simplified expenses. You must use the actual cost method for mobiles.
Best Business Mobile Deals for Sole Traders in 2026
Sole traders don’t need enterprise-grade plans with hundreds of lines. You need a reliable, affordable plan with enough data for your day-to-day work. Here’s what’s available right now:
| Deal Type | Starting Price | Best For | Credit Check? |
|---|---|---|---|
| SIM Only | From £6/mo | Sole traders with a phone they’re happy with | No credit check on SIM only |
| Handset + SIM | From £15/mo | Sole traders needing a new phone | Standard credit check |
| Unlimited Data SIM | From £10/mo | Field workers, heavy data users | No credit check on SIM only |
| No Credit Check SIM | From £6/mo | New businesses, poor credit history | No credit check |
Note: All business mobile tariffs include annual CPI + 3.9% price increases, typically applied each April. On a £6/mo plan, that’s roughly 50p–70p per month extra each year. Factor this into your budgeting.
Virtual Landline: A Professional Number Without a Landline
A virtual landline gives you a local geographic number (e.g., 0161 for Manchester, 0207 for London) or even a freephone 0800 number that simply forwards calls to your mobile. It’s not VoIP — there’s no app or internet calling involved. It’s just a professional number that rings your existing mobile.
For sole traders, this is a powerful tool:
- Clients see a “real” business number, not a mobile number
- You can advertise a local number to build trust in your area
- No need for a physical landline, desk phone, or broadband
- Works alongside your business mobile — no extra hardware needed
- Costs just a few pounds per month on top of your mobile contract
No Credit Check Options for New Sole Traders
Just registered as a sole trader? Worried about passing a credit check? No credit check business SIM only deals are available from £6 per month. Because SIM only contracts carry no handset subsidy, networks don’t need to run a credit check — making them ideal for newly self-employed people or those with a limited credit history.
If you need a handset, you may need to pass a credit check. Alternatively, consider buying a refurbished or budget handset outright and pairing it with a no-credit-check SIM only deal. This keeps costs low and avoids any credit complications.
Get a Sole Trader Mobile Deal Today
Compare The Networks helps thousands of sole traders find the right business mobile deal. SIM only from £6/mo, no credit check required. Tell us what you need and we’ll find the best deal for you.
Get Your Sole Trader DealHow to Get Started: 3 Simple Steps
- Choose your deal — Browse sole trader mobile deals or tell us what you need and we’ll recommend the best option.
- Keep your number — Text PAC to 65075 from your current phone to get a PAC code. Give it to us and your existing number transfers within 1 working day.
- Claim the expense — Add the monthly cost to your self-assessment tax return. The contract is in your trading name, so 100% is claimable.
All prices shown exclude VAT. Annual CPI + 3.9% price increases apply to all tariffs. Compare The Networks is regulated by OFCOM.
Q: Can I claim a business mobile on my self-assessment tax return?
Yes. If the mobile is used solely for business, you can claim 100% of the contract cost as an allowable expense on your self-assessment return. This reduces your taxable profit. See our full guide on claiming a business mobile as a tax expense.
Q: Do I need a business bank account to get a business mobile?
No. Sole traders do not legally need a business bank account in the UK, and you don’t need one to take out a business mobile contract either. The contract can be in your trading name or personal name.
Q: What’s the difference between a virtual landline and VoIP?
A virtual landline is simply a geographic phone number that forwards calls to your mobile — no app or internet required. VoIP (Voice over Internet Protocol) is a phone system that uses the internet to make and receive calls, often with an app. They are different products for different needs.
Q: Will I pass a credit check as a new sole trader?
For SIM only deals, no credit check is required. If you need a handset contract, a standard credit check will be run. New sole traders with limited credit history may want to start with SIM only to avoid any issues.