Stress-Free Online Accounting and Bookkeeping for Businesses
Say goodbye to spreadsheets, late nights and last-minute tax stress. With cloud-based bookkeeping and expert advice, you’ll have total control over your finances and more time to grow your business.
Full-Service Bookkeeping
We’ll handle your day-to-day finances so you can focus on growing your business, from reconciliations to expense tracking, all seamlessly managed online.
On-Demand Support
Need to make a change or ask a quick question? Text us. Call us. Email us. All included in your monthly fee, with a 48-hour response guarantee.
Tailored to Your Business
We connect to your bank, HMRC and the apps you already use. Everything runs smoothly with tools that actually work for you and your business.
What You Get with Simplex Payroll
✅ Real-time financial visibility
✅ Digital document collection and storage
✅ Quarterly management reports
✅ Year-end accounts and Corporation Tax return
✅ Self-assessment for directors
✅ VAT returns (MTD-compliant)
✅ Payroll and CIS options available
✅ Annual P&L and forecasts
Opening hours: 9am – 6pm | Replies within 48 hours
Simple Online Accounting and Bookkeeping for Small Businesses
Bookkeeping doesn’t have to be complicated.
Simplex keeps your records up to date, fully compliant and ready for tax season. Whether you’re just starting out or scaling fast, we take care of the numbers so you can focus on the work you enjoy.
Smart Tools, Simple Setup
At Simplex, we use practical tools to make your accounting simple. You don’t need to figure anything out — we’ll set up the right apps, show you how they work, and support you every step of the way.
Xero
Track your income, expenses and VAT in real time. Xero keeps everything organised and connected to your bank.
Brightpay
Run payroll with ease. BrightPay handles payslips, pensions and HMRC submissions, all fully compliant.
dext
Snap receipts and email invoices straight into your accounts. No paperwork, no chasing , just accurate records.
What It’s Like Working With Simplex
We’re not just here to do your books — we’re here to make running your business easier. Our clients get personal support, fast replies and no unexpected fees. You’ll always know what’s going on, and we’ll always have your back.
Trusted by UK Businesses Nationwide
We’re proud to be the 2022 Xero Sole Practitioner of the Year and South East Young Entrepreneur of the Year – but even prouder of our client results.
“I wouldn’t trust anyone else now.”
Hanah, Small Business Owner
“Lucy is absolutely amazing and communicates everything clearly. I don’t understand accountancy terms, but she explains it all in a way that makes sense. I just upload my invoices and expenses — Lucy handles the rest. Numbers used to stress me out, but outsourcing to Simplex was the best decision I’ve made for my business.”
“They got HMRC to drop a £1,200 penalty.”
Rachel, LLP Partner
“I reached out in a panic with overdue accounts and a hefty fine from HMRC. Lucy jumped straight in, filed everything quickly, and managed to get the penalty removed — plus a refund. She’s been wonderful to work with and I’m so glad I found her.”
“We couldn’t ask
for more.”
Neil, Construction Business Owner
I cannot recommend Simplex enough. Lucy has been so helpful, and got me sorted when my accounts were in such a mess! She explained everything to me, and has just made the entire process so easy. As a small business owner, having someone like Lucy helping me is exactly what you need!
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
Switching Accountants is Easier Than You Think
Not getting the support you need? Or just feel like it’s time for a change?
Switching to Simplex is surprisingly easy. We’ll handle everything behind the scenes — no awkward emails, no chasing paperwork, and nothing left to chance. You stay focused on your business, and we’ll take care of the switch.
Here’s how we make it simple:
Seamless Transfer
We’ll contact your previous accountant, gather what we need, and securely transfer your financial records — no hassle for you.
No Disruption to Your Business
There’s no downtime. We’ll keep your accounts running smoothly and ensure everything stays up to date while we handle the changeover.
A Fresh Start
Once you’re settled in, we’ll review your numbers, identify any gaps, and create a plan that supports your goals — now and in the future.
Ready to switch?
Get in touch today and let’s make it happen!
Accountancy Blog Posts
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!
Online bookkeeping services usually cost between £50 and £250 per month, depending on your business needs and the level of support required. At Simplex, our packages start from just £25 per month. We believe in clear pricing with no hidden costs. You’ll get dependable, friendly support from a team that understands small businesses and offers exactly the right amount of help for where you are now.
Xero is one of the best bookkeeping systems for UK businesses. It’s cloud-based, easy to use, and works perfectly with HMRC’s Making Tax Digital rules. At Simplex, we specialise in Xero and help clients set it up, use it effectively, and stay organised. It’s ideal for tracking invoices, expenses, and cash flow so you always know where your business stands and what needs attention.
QuickBooks is useful for managing your books but it doesn’t offer advice, planning, or a human touch. An accountant gives you clarity, helps with strategy, and supports you with tax and compliance. At Simplex, we combine digital tools with real-life expertise so you’re not just ticking boxes. You’ll understand your finances, make better decisions, and feel more confident running your business.
Accountants typically charge between £100 and £300 per month for bookkeeping, depending on the volume of work and services included. At Simplex, we offer flexible support with prices starting at just £25 per month. Whether you need basic transaction matching or complete VAT and payroll support, we tailor our services to suit your business size and budget. You only pay for what you really need.
Yes, Xero is a brilliant choice for bookkeeping. It helps you track income, expenses, bank feeds, and invoices, all from one easy-to-use dashboard. At Simplex, we support clients with setup, training, and day-to-day questions. Whether you’re switching from spreadsheets or starting fresh, we’ll make sure you feel confident using Xero and get the most out of it for your business.
A bookkeeper handles the daily records like receipts, invoices, and bank transactions. An accountant reviews those records, prepares your accounts, and advises on tax, strategy, and business planning. At Simplex, we offer both services so you don’t need to juggle two providers. Everything is kept up to date and you always have someone to turn to for advice when you need it.
