Outsourced Payroll Services That Actually Make Life Easier
No more confusion. No more chasing payroll every month. Simplex is the online payroll company UK businesses rely on when they want payroll sorted properly. We take care of everything from payslips to HMRC using tools that are easy to use and fully online. You get clear communication expert support and a service that just works in the background while you stay focused on running your business.
Payroll handled for you
We handle every part of the process for you, from payslips to HMRC submissions, so you can stay focused on your business.
Simple online access
Your payroll runs through secure cloud based tools that are simple to use. No downloads, no confusion, just clear approvals and real time access.
Fast personal support
Message, email or call us anytime. You will always speak to someone who knows your business and replies fast, with no extra fees.
What You Can Expect from Our Online Payroll Service
We work with business owners across the UK who are ready to hand over their payroll and never look back. Whether you are a sole director or managing a growing team, we make sure everything runs smoothly from the first pay run.
With Simplex, you can expect:
✅ Payroll submitted on time every time
✅ Payslips and end of year forms prepared for you
✅ Pensions and auto enrolment fully managed
✅ Real time submissions sent to HMRC
✅ Online approvals using BrightPay and Modulr
✅ Secure access for employees to view payslips
✅ Fast personal support if HMRC ever gets in touch
Everything is managed online but you will always have a real person to speak to when needed. No waiting, no confusion, no stress.
“Lucy and the Simplex Team are super trust worthy. I am confident in their ability to sort out my business’ finance. They are quick, great communication and knowledgeable.”
Martini, Marketing Agency Owner
Support That Goes Beyond Payroll
At Simplex, we do more than run payroll. We look after your finances like they are our own. You will always speak to someone who knows your business inside out, replies quickly, and gives clear support. We keep things simple, explain what matters, and make sure you feel supported at every step.
Why Businesses Choose Simplex
✨ We explain things simply, without the jargon
✨ You always get a quick reply when you need it
✨ Our tools save you time instead of adding more admin
✨ Pricing is clear, with no surprise fees down the line
✨ You feel supported, not left chasing updates
“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. If you have any questions Lucy will always reply quickly in email or arrange a call where needs be.
I can’t recommend her enough.“
Susan-Marie, Marketing Agency Owner
Smart Tools, Simple Setup
We use simple, reliable tools to take the pressure off your payroll. We set everything up for you, walk you through how it works, and stay by your side whenever you need help.
Xero
Your financial control centre.
Keep your records up to date with payroll data synced directly to your accounts.
Modulr
Approve payments in just a few clicks.
Send wages and taxes securely without logging into your bank.
Brightpay
Run payroll without lifting a finger.
We prepare payslips, reports, and filings so you stay fully compliant and on time.
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 cost of payroll services in the UK varies depending on the number of employees and the level of support you need. Some providers charge a flat monthly fee, while others work on a per-employee basis. What matters most is finding a service that gives you accuracy, peace of mind, and frees up your time to focus on growing your business.
The UK payroll market is dominated by large providers such as ADP and Moorepay, who handle payroll for thousands of businesses nationwide. While these firms offer wide coverage, many smaller businesses prefer working with specialist accountants who provide a more personal service, ensuring payroll is accurate and compliant without the “call centre” feel of bigger companies.
The “best” payroll company really depends on your business needs. Big firms like ADP are well-known, but smaller UK-based accountants often provide more tailored support. If you want straightforward, reliable payroll with someone you can easily speak to, choosing a dedicated accountant is usually the best option.
Popular payroll software in the UK includes Sage, BrightPay, and Xero. Each integrates with HMRC and helps with tasks like pensions and payslips. Many business owners find cloud-based software like Xero Payroll easiest to use, especially if linked with their accounting system. An accountant can advise on the best fit and even manage the setup for you.
Yes, you can run payroll yourself if you register with HMRC as an employer and use approved payroll software. However, it can be time-consuming and mistakes can lead to penalties. Many business owners outsource payroll to save hassle and ensure everything from tax to pensions is handled correctly.
Charges for running payroll can differ depending on the size of your team and the level of support you need. Some providers work on a per-employee basis, while others use a simple monthly fee. Rather than focusing on the exact price, it’s best to choose a service that ensures compliance, saves you time, and gives you confidence that everything is handled correctly.
