Instantly Cut Tax Stress with an Online Tax Preparer
No more tax stress or confusing deadlines. Simplex makes tax returns straightforward. Everything is filed accurately, on time, and completely online. Whether you’re self-employed or run a limited company, we take care of it all and stay in touch whenever you need us.
Simple Tax Preparation
We handle your tax return from start to finish, making the process clear and straightforward so you can focus on running your business.
Accurate Online Filing
Your tax return is prepared and submitted online with complete accuracy. Everything is filed on time to keep you fully compliant.
Unlimited Support
Call, WhatsApp or email us anytime. You’ll always get a quick response from someone who knows your business, with no extra charges.
What You Get with Our Online Tax Preparer Service
We help UK businesses submit their tax returns easily and on time. Whether you’re self-employed or run a limited company, Simplex gives you the tools and hands-on support to take the stress out of tax season.
✅ Tax returns prepared and filed online
✅ HMRC deadlines tracked and met for you
✅ Self-assessments and company returns handled
✅ Unlimited support by call, text or email
✅ Tools that are simple for you to use
With Simplex, you’re never left chasing answers. You’ll always know what’s been done, what’s next, and who to speak to.
“Simplex have been an integral part of our new business, they have helped us navigate business set-up, HMRC & tax and accounting.”
Neil, Construction
Your Accountant, Wherever You Are
You don’t need to visit an office or book long meetings. Simplex works fully online, giving you fast, flexible support wherever you’re based.
Whether you’re at home, on site or in the office, your accountant is just a call, text or email away. You get quick answers from someone who understands your business.
Why Companies Choose Simplex
✨ Services built around your company goals
✨ Unlimited contact by phone, text or email
✨ Fast replies from someone who knows your accounts
✨ No jargon, no stress, no hidden fees
✨ Award-winning team that genuinely cares
Simplex gives you expert support that’s clear, personal and built to help your business grow.
“Lucy’s help for my business is invaluable. Knowing I don’t need to worry about my bookkeeping or tax returns means I can focus on growing my business.“
Susan, Marketing
Smart Tools, Simple Tax Returns
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!
The best online tax preparer depends on your needs, but many UK business owners prefer working with a real accountant who offers virtual services. While software can be helpful, it won’t spot every saving or keep you compliant. With us, you get expert support, personalised help, and peace of mind without leaving your desk.
At first glance, websites may seem cheaper but they often miss tax-saving opportunities or require your time. A professional tax preparer can help reduce your overall tax bill and avoid costly mistakes. We offer affordable, fixed-fee packages for small businesses and busy founders so you get great value and ongoing support.
The cost can vary depending on your circumstances and how complex your tax return is. What matters most is the level of support and attention you receive. We offer fixed-fee services with no hidden charges, plus year-round support to help you stay organised and tax-efficient.
The 60% tax trap applies when income goes over £100,000 and your personal allowance starts to reduce. It’s possible to soften the impact through careful planning such as pension contributions or charitable giving. We provide the tools and support to help you understand your options and keep more of what you earn.
Yes, especially if you’re self-employed, run a limited company or have several income sources. A tax consultant does more than handle forms. They offer ongoing support to help you stay compliant and avoid issues. We work virtually with clients across the UK, making it simple to get the help you need.
