Award-Winning Online Accounting That Keeps Your Business Moving
Simple, proactive accounting. Unlimited support. No surprises.
Running a business is demanding enough without worrying about tax deadlines, confusing software, or chasing your accountant for answers. If you’re searching for an online accountant Xero, you want clarity, fast responses, and advice that actually helps your business grow. At Simplex, we combine expert knowledge with friendly, unlimited support so you always feel confident about your finances.
Complete Compliance Covered
VAT returns, payroll, year-end accounts, corporation tax or self-assessment are handled properly and on time. Using Xero alongside tools like BrightPay where needed, we make sure your records are accurate, and every deadline is met without stress.
Clear Numbers, Clear Decisions
We keep your Xero account accurate, up to date and easy to understand. You will always know where your business stands, with structured reporting and proactive tax planning included as standard. Your finances stay organised, compliant and ready for whatever comes next.
Unlimited Support Included
You are never charged extra for asking questions. Calls, texts and emails are all included in your fixed fee. We are available between 9 am and 6 pm and guarantee a response within 48 hours. Clear communication is part of the service, not an added cost.
What’s Included in Our Service
When you choose Simplex as your online accountant Xero specialist, you receive a complete, fully managed accounting service designed to keep your business compliant, organised and moving forward.
✅ Full bookkeeping oversight
✅ VAT returns and compliance
✅ Corporation tax or self-assessment
✅ Payroll management using BrightPay where required
✅ Dividend and tax efficiency planning
✅ Year-end accounts
✅ Ongoing business support
✅ Dedicated accountant who knows your business personally
Everything is delivered online, securely and efficiently, so you can manage your finances from anywhere in the UK with full confidence.
“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
A More Personal Approach to Online Accounting
Most online accountants feel distant and transactional. We’re different.
When you join Simplex, you get direct access to a real accountant who understands your business goals. We take time to explain things clearly, remove jargon, and give advice tailored specifically to you.
You won’t be passed around a call centre.
You won’t wait weeks for answers.
You won’t feel left in the dark.
You’ll feel supported.
Support Wherever You Are
Simplex works fully online and remotely, so you can access reliable online accountant Xero support wherever your business is based in the UK. There is no need for in-person meetings or paperwork. Everything is handled securely through simple digital systems.
Bookkeeping, VAT returns, payroll using BrightPay where required, and ongoing communication are all managed remotely, keeping everything organised and on schedule. You can contact us by phone or email between 9 am and 6 pm, and we guarantee a response within 48 hours.
This approach keeps your accounting efficient, secure and easy to manage, while still giving you direct access to your dedicated accountant at Simplex.
“Lucy and the team are amazing at just getting the job done. I know I don’t have to worry about my invoices or tax – the one thing I was worried about. All the stress is taken away, and I know that Simplex Accounting are dealing with everything accurately!”
Sapna, Marketing
Simple Accounting
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!
Xero is a brilliant bookkeeping tool, but it’s not a replacement for an accountant. It records your numbers – it doesn’t interpret them, spot tax-saving opportunities, or ensure you’re fully compliant with HMRC. As accountants, we use Xero alongside our expertise to help you plan ahead, avoid costly mistakes, and make confident decisions. The best results come from combining smart software with professional support.
Yes, HMRC fully recognises Xero. It’s Making Tax Digital (MTD) compliant, meaning you can submit VAT returns directly to HMRC through the software. That said, software alone doesn’t guarantee accuracy. We help ensure everything is coded correctly, deadlines are met, and submissions are stress-free. Using Xero with the right accounting support keeps you compliant and confident.
Both QuickBooks Online and Xero are strong cloud accounting platforms. Xero is often favoured for its user-friendly dashboard and seamless integration with UK apps and banks. The “best” option depends on your business needs. We regularly help clients choose and set up the right system, ensuring it works efficiently from day one and supports future growth.
Xero isn’t completely free, but accountants can access partner programmes with discounted or complimentary subscriptions for client management. For business owners, there’s always a monthly fee. We can often secure partner pricing and manage your subscription efficiently. More importantly, we make sure you’re using Xero properly, so you get real value rather than just another monthly cost.
Xero is powerful, but it’s still just software. Without proper setup and oversight, errors can build up quietly. Some advanced reporting and industry-specific features may require add-ons, increasing costs. It also won’t give tailored tax planning support. That’s where we come in, ensuring your Xero account is accurate, compliant, and actively supporting smarter business decisions.
In the UK, QuickBooks Online is widely seen as Xero’s biggest competitor. Both target small businesses and offer similar cloud-based features. The right choice depends on your business model, reporting needs, and growth plans. We’re software-agnostic, so our focus is on recommending the platform that genuinely suits you – and making sure it’s set up to work properly.
