Simplify your finances, save on tax, and focus on growing your business.
Running a business on your own comes with enough challenges. Managing your accounts shouldn’t be one of them. At Simplex, we provide expert accounting for sole traders across the UK, with personalised, one-on-one support you can count on. Whether you’re just starting out or looking to switch from your current accountant, we’ll handle your bookkeeping, tax returns, and business advice all with unlimited support via phone, text, or email. Everything is included, with no hidden fees.
Less Admin, More Time for You
We take care of the bookkeeping and tax returns so you don’t have to stress. And we’ll set you up with easy tools like Xero that actually make sense.
Keep More of What You Earn
We’ll make sure you’re claiming all the right expenses and not paying a penny more tax than you need to. Simple advice, big savings.
Support You Can Count On
Got a question? Just call, text or email us. We’re always here to help. You’ll speak to a real person who knows your business and cares about your success.
What’s Included in Our Services
Simplex gives sole traders everything they need to stay organised, save tax, and get support that actually feels supportive. We take care of the numbers so you can focus on your business.
✅ Bookkeeping done for you using Xero and Dext
✅ Self Assessment tax return filed on time
✅ All your allowable expenses claimed properly
✅ Clear reports so you always know where you stand
✅ Unlimited support by call, text, WhatsApp or email
✅ Fixed monthly pricing with no surprises or hidden fees
We handle the details, keep things simple, and make sure you’re always in control.
“Simplex are super easy to work with. I love that I have a portal to track all documents and paperwork that need my attention. Everything else just seems to run in the background so I can focus on my business“
Jordan, Designer
Fully Remote, Fully Supported
At Simplex, we’re a fully remote team, which means you don’t have to waste time travelling to appointments or sitting in traffic just to talk to your accountant. Whether you’re on the move, working from home, or out on a job, we’re always just a call, text or email away. This setup lets us support sole traders across the UK with fast replies, flexible scheduling, and secure online tools that make everything easier. You’ll get the same hands-on, personal service just without the office walls. It’s accounting that fits around your business, not the other way around.
Why Businesses Choose Simplex
✨ Personal, one-on-one support from a dedicated accountant
✨ Unlimited calls, texts and emails included in your plan
✨ Clear, fixed monthly pricing with no hidden fees
✨ Award-winning service trusted by businesses across the UK
✨ Reliable bookkeeping and tax return handling, done for you
Simplex makes accounting easy, efficient and stress-free.
“Lucy and the team have been very helpful with their accounting services. I’ve always had my accounts filed on time and the support has been helpful”
Sherilyn, Marketing
Smart Tools, Simple Invoicing
We set you up with easy, reliable tools so your finances stay organised without adding to your to-do list. Everything is customised for the way you work, and we’re always here if you need help.
Xero
Stay organised without spreadsheets.
See your income, expenses and invoices in one place, always up to date and ready when you need it.
dext
No more chasing receipts.
Snap a photo or forward an email, and your bills and receipts are stored, sorted and matched to your accounts.
brightpay
Stress-free payroll.
Payslips, pensions and submissions are taken care of, always on time and fully compliant with HMRC
Getting Started is Easy!
We’ve made it simple for you to get the help you need:
Book a Free Call
Tell us about your business and what you need.
Send Your Info
Share your financial details securely online.
We Do the Work
We’ll sort your accounts and keep everything up to date.
Stay in Control
Get updates and support, so you always know where you stand.
Book your free discovery call! It will only take a minute
Time to Switch Accountants?
You don’t need to stay stuck with support that’s slow or confusing. Switching to Simplex is smooth and handled for you.
Seamless Transfer
We contact your previous accountant and securely move everything over, CIS, VAT, payroll and more.
No Disruption
Your accounts stay up to date while we handle the switch, so nothing gets missed.
A Fresh Start
We review your numbers, identify gaps, and get you set up with a clear plan that works for you.
Ready to switch? Let’s make it happen.
Helpful Resources
Your Questions, Answered
We know you might have some questions, and we’re here to make everything as clear and straightforward as possible. If you need more information, don’t hesitate to reach out—we’re always happy to help!
Yes, you can handle your own accounting as a sole trader, but it can be time-consuming and risky if you’re not confident with tax rules. Many business owners choose to work with an accountant who can help save tax, stay compliant, and free up your time so you can focus on running the business.
As a sole trader, you need to keep accurate records of your income and expenses, submit a Self Assessment tax return each year, and pay any tax due. If your turnover exceeds £90,000, you must register for VAT. Good bookkeeping is essential, and an accountant can help keep everything running smoothly.
Most sole traders use the cash basis accounting method, where you record income and expenses when money actually moves in or out of your account. It’s straightforward and works well for small businesses. If your business is growing, the traditional accrual method might suit you better. An accountant can help you decide.
An accountant supports sole traders with bookkeeping, tax returns, HMRC deadlines, and claiming the right expenses. More importantly, they offer advice to help you save tax and make better financial decisions. Having an accountant means less stress and more time to focus on your business.
Accountant fees for sole traders in the UK typically range from £25 to £100 per month, depending on the level of service. Many offer fixed monthly packages that include bookkeeping and tax returns. It’s often a smart investment when you consider the time saved and the potential tax savings.
For sole traders, the three golden rules of bookkeeping help you keep your records accurate. They are: debit what comes in and credit what goes out, debit the receiver and credit the giver, and debit all expenses and credit all incomes. These rules form the basis of double-entry bookkeeping and are useful even if you use accounting software.
