The Digital Marketing Accountant That Helps You Scale, Not Just Stay Compliant
Finally feel in control of your agency finances
Revenue is coming in, clients are growing, but your numbers still feel unclear. You are not fully sure what you can afford to take out, how much tax is building up, or where profit is really coming from. That uncertainty slows decisions and adds pressure. Simplex changes that. You get clear numbers, proactive advice, and a plan that helps you grow your agency with confidence.
Build an agency
set up to scale
With the right financial structure in place, growth becomes easier, cleaner, and far more predictable.
Know Your Numbers
Without Guessing
See exactly which clients, services, and campaigns are driving profit. Make faster, better decisions with complete clarity.
Support That Actually
Feels Supportive
Message, call or email us anytime and get clear, reliable support you need, without delays, confusion, or extra charges.

Why businesses choose Simplex
Support that fits around your business
Whether you are just starting out or more established, everything is handled in a way that feels simple, clear, and easy to manage.
Clear and easy to understand
You always know where you stand, with your finances explained in plain English and no confusion.
Simple Systems that save you time
You spend less time on admin with simple, modern tools that keep everything running smoothly.
Reliable, responsive communication
You can get in touch whenever you need, with a 48 hour response guarantee and support from 9am to 6pm.
Everything Handled in One Place
Everything is handled for you, so your finances stay organised, accurate, and working in the background while you focus on growing your agency.
✅ Monthly bookkeeping and clear reporting
✅ VAT returns completed accurately and on time
✅ Payroll support using BrightPay if needed
✅ Cash flow forecasting so you stay ahead
✅ Ongoing tax planning tailored to your agency
We set everything up so it runs smoothly in the background, giving you more time to focus on clients and growth.

“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, Marketing Agency Owner

Built for Digital Marketing Agencies
Whether you run SEO campaigns, manage paid ads, or deliver full service marketing, your finances need to keep up with your growth.
We support agencies who:
You will always know where things stand, what has been taken care of, and that nothing is being missed.
Simple, flexible, and built for your agency
Work with your accountant in a way that fits around how your agency runs. No unnecessary meetings, no chasing documents, and no complicated processes slowing you down. Everything is set up to feel straightforward, efficient, and easy to manage as you grow.
Everything runs digitally, from sharing documents to staying in touch. You can message, ask questions, and get what you need without interrupting your day or your workflow.
You still get the same level of support, just delivered in a faster, more flexible way that works around you and your clients.

“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 Agency Owner
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!
A digital marketing accountant helps agencies manage their finances, stay compliant, and improve profitability. This includes handling bookkeeping, VAT returns, tax planning, and providing clear insights into your numbers so you can make better business decisions.
A digital marketing accountant understands how agencies operate, from retainers to project based work and contractor payments. This means you get more relevant support, better tax efficiency, and financial support that actually fits your business model.
Yes, a digital marketing accountant can identify tax saving opportunities specific to your agency, ensuring you are structured correctly and claiming everything you are entitled to, while staying fully compliant with HMRC.
The cost of a digital marketing accountant in the UK depends on the size and complexity of your agency. At Simplex, pricing is tailored to your needs, with ongoing support, unlimited communication, and no hidden fees.
You should look for a digital marketing accountant who understands agency finances, offers proactive support, communicates clearly, and provides ongoing support. It is important they help you plan ahead, not just report on what has already happened.

