Stop Letting Payroll Control Your Business
Running payroll for a small business in the UK can quickly become overwhelming. From Real Time Information (RTI) submissions and pension auto-enrolment to statutory payments and HMRC deadlines, there’s very little room for error. One small mistake can lead to penalties, unhappy employees, and hours of extra admin. If you’re spending evenings double-checking figures or worrying about compliance, you’re not alone. Simplex provides reliable uk small business payroll services that remove the pressure, keep you compliant, and free up your time to focus on growing your business.
Compliance Covered
Payroll processed correctly and on time, every month.
We manage RTI submissions, PAYE, National Insurance, statutory payments, pensions and year-end reporting. No missed deadlines. No costly errors.
You stay compliant and confident. We handle the detail.
Simple Systems
Simple systems. Clear digital payslips. Full visibility.
We use BrightPay for efficient processing and Modulr for secure payments where needed. Everything runs smoothly as your team grows.
From your first employee to a larger team, we grow with you.
Unlimited Support
Have a question? Call us. WhatsApp us. Email us.
Support is unlimited and included in your service. Whether it is a new hire or director’s pay, we are here without surprise charges.
Clear advice. Fast replies. Total peace of mind.
What’s Included in Our Service
Complete payroll support designed to keep your business compliant, your employees paid on time and your admin stress-free.
✅ Weekly or monthly payroll processing
✅ RTI submissions to HMRC
✅ Digital payslips for employees
✅ Pension auto-enrolment setup and ongoing management
✅ Starters, leavers and salary changes handled for you
✅ Statutory pay including SSP and SMP
✅ BrightPay payroll software that is simple and employee-friendly
✅ Direct salary payments through Modulr, where appropriate
“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
Support That Puts Your Business First
We believe small businesses deserve personal support that actually feels personal. At Simplex, you are treated as a valued client from day one. We take the time to understand how your business operates, explain everything clearly in plain English, and support you as your team grows.
You will never be passed around or left waiting weeks for answers. Just friendly, proactive advice whenever you need it.
📞 Opening hours: 9 am–6 pm
⏱️ 48-hour response guarantee for all clients
Remote Support That Works Wherever You Are
Simplex works fully online, so you can access reliable payroll support wherever your business is based in the UK. There is no need for in-person meetings, paperwork or chasing multiple providers. Everything is handled securely through simple digital systems.
From payroll setup to monthly processing and ongoing advice, everything runs smoothly in the background. You can call, text or email whenever you need support, and you will always deal with someone who understands your business.
Secure. Efficient. Straightforward.
“Lucy has been a godsend for our company. She is professional, trustworthy, competent and friendly. She has dealt with many problems s for us with a positive result. She is always available to answer any queries and deals with problems very quickly.
We would highly recommend her services.”
Jeanette, Contractor
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!
The best payroll company for a small business depends on your size, budget, and how much support you need. Many owners choose software like BrightPay or Xero Payroll for flexibility, while others prefer fully managed payroll for peace of mind. If you’d rather avoid HMRC headaches and compliance risks, outsourcing to an accountant can save time and stress. We help small UK businesses run smooth, accurate payroll without the hassle.
In the UK, popular payroll software includes BrightPay, Xero Payroll, QuickBooks Payroll, and Sage. The right choice depends on whether you need simple payslips or more advanced features like pension auto-enrolment and CIS support. It’s also important that the software is HMRC-compliant and easy to use. If you’re unsure, we can recommend and set up the best option for your business, ensuring everything runs correctly from day one.
BrightPay is HMRC-recognised payroll software, which means it meets HMRC’s requirements for submitting RTI (Real Time Information) reports. It’s widely used by UK accountants and small businesses because it’s reliable and straightforward. However, using approved software doesn’t remove your compliance responsibilities. If you’d like reassurance that everything is filed accurately and on time, we can manage your payroll using trusted, HMRC-compliant systems.
Gusto and ADP are well-known payroll providers, but they’re primarily US-focused. For UK businesses, they’re usually not suitable due to different tax and HMRC requirements. UK-specific payroll software is a better fit and ensures compliance with PAYE, RTI, and pension regulations. If you’re running a UK limited company, we can guide you towards the right UK-based solution and handle everything on your behalf.
Yes, HMRC offers free Basic PAYE Tools, which is suitable for businesses with fewer than 10 employees. It allows you to submit RTI reports, but it’s fairly basic and doesn’t include features like automated payslips or pension integration. Many growing businesses quickly outgrow it. If you’d prefer a smoother, fully supported payroll process, we can recommend better software or manage everything for you.
