UK-based · GDPR compliant
Scale Your Accountancy with Expertise and Automation
Acenteus helps accountancy firms and growing businesses outsource bookkeeping, tax, payroll, audit and finance functions, backed by cloud automation, security-first processes, supported by a team of 100+ accounting professionals.
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Tell us about your needs and we'll get back to you within one working day.
Trusted by Our Clientele
Outsourced accounting, explained in two minutes
Your one-stop accounting partner
Acenteus is a UK-based, ACCA-accredited accounting outsourcing partner that helps accountancy firms expand their capacity with qualified accounting professionals who work seamlessly within the systems and processes you already use. From routine bookkeeping to complex accounting, tax, payroll, and audit support, we provide reliable, flexible and scalable expertise that enables your team to handle more work, maintain quality, and focus on growing your practice.
Your One-Stop Accounting Team
Bookkeeping, payroll, tax, audit support and advisory. Everything under one roof, so you never juggle multiple providers.
Fast, Reliable Turnaround
Clear SLAs and a named point of contact. We respond within one working day, usually much sooner.
Transparent, Fixed Fees
No surprise invoices. Agree a fixed monthly fee up front and know exactly what you're paying for.
Cloud-First & Paperless
We work in Xero, QuickBooks, Dext and the tools you already use, with real-time visibility of your numbers.
UK GDPR Compliant & Secure
Security-first processes, encrypted data handling and full compliance with UK GDPR from day one.
Not sure where to start?
Tell us about your business and we'll recommend the right setup. Free, no obligation.
Expert services for every accounting need
Outsourced accounting expertise tailored for accountancy firms and for growing businesses.
01Tax, Accounts, Bookkeeping & Payroll Outsourcing
Accounts, Tax, Bookkeeping & VAT, Accounts Production and Payroll workloads handled with accuracy, aligned to filing schedules. Automation reduces rework and keeps teams focused on clients.
02Management Accounting
Monthly reports, reconciliations, and working papers prepared to agreed formats and timelines, keeping data organised and ready for review.
03Making Tax Digital (MTD)
MTD managed end to end, covering onboarding, workflow setup, compliance monitoring, and HMRC aligned submissions across all stages.
04Cash Flow Forecasting
Structured forecasts built from historical data and assumptions to reflect expected movement. Easy to review outputs support planning.
05Audit Support
Structured processes, detailed documentation, organised schedules, and a four eye review approach keep audit engagements moving efficiently.
06Corporate Finance Outsourcing
Specialist support for valuations, due diligence, and transaction advisory work.
01Bookkeeping & Payroll
Error-free, error-free payroll runs and day-to-day bookkeeping so you never miss a filing or a payday.
02Tax Advisory Services
Proactive tax planning and advisory to keep your business efficient and compliant year-round.
03Business Setup Assistance
From incorporation to your first VAT return, we help new businesses start on solid financial footing.
04Outsourced Finance Function
A full finance team on demand, without the overhead of hiring in-house.
Outsourcing to Acenteus compared with hiring in-house
The honest trade-offs when you add capacity to a UK firm.
| What matters | Outsourcing to Acenteus | Hiring in-house |
|---|---|---|
| Time to add capacity | Live within a week | Typically 8 to 12 weeks to recruit and onboard |
| Cost model | One fixed monthly fee | Salary plus employer NI, pension, software and desk |
| Busy-season flexibility | Scale up and down on demand | Fixed headcount all year |
| Holiday and sickness cover | Built in, team-based | Single point of failure |
| Software | We work in software like Xero, QuickBooks, Sage etc. | You provide and pay for tools |
| Quality review | Qualified reviewer included | You manage review and training |
Expert in all accounting software
QuickBooks
Sage
TaxCalc
TaxFiler
XeroFrom first call to live within a week
A simple, low-disruption onboarding built around how firms actually work.
Free consultation
We map your workload, systems and busy-season pressure points. No obligation.
Fixed scope and fee
You get a clear scope and a transparent monthly fee agreed up front. No surprise invoices.
Onboard and migrate
We set up inside your existing tools and handle handover with minimal disruption.
Deliver, reviewed
Your dedicated team delivers reviewed, audit-ready work with regular reporting.
Ready to add accounting capacity in a week?
Book a free, no-obligation consultation and get a fixed monthly fee up front.
A few figures about Acenteus
The numbers behind the work: accuracy, responsiveness and long-term client relationships.
100+
Accounting, Payroll & Tax Professionals
99%
Error-Free Payroll Accuracy
100%
VAT & Tax Filing Precision
50+
Client Firms & Businesses Served
Why Growing Businesses & Accounting Firms Choose Acenteus
We are a UK-based, ACCA-registered outsourced accounting, finance, tax, and payroll partner serving accountancy firms and growing businesses across the UK. From bookkeeping and payroll to tax compliance and audit support, our expert-led team combines deep technical expertise with cloud-based automation to reduce costs, enhance accuracy, and free up your time so you can focus on growing your business.
Accuracy you can audit
Security-first processes
Scales with your growth
Always-on cloud access
Trusted by Firms & Businesses
Hear what our clients have to say about working with Acenteus.
“The audit professionals at Acenteus demonstrate exceptional proficiency, adhering to methodology, enhancing audit quality and efficiency while ensuring compliance.”
Managing Partner
Managing Partner, Carter & Co
“Acenteus promptly onboarded skilled payroll professionals with UK experience, enabling seamless processing without disruption to our operations.”
Senior Accountant
Senior Accountant, FinEdge Consulting
“Joel and team delivered high-quality, tailored solutions significantly improving operational efficiency through professional, expert support.”
Director
Director, Reynolds Accounting
“Acenteus' accounting outsourcing transformed compliance management, freeing time for high-value advisory and client growth initiatives.”
Tax Partner
Tax Partner, Sinclair & Associates
“Our goals weren't just seen as profit margins; they were understood on a personal level.”
Founder & CEO
Founder & CEO, Nifty World
“Working with Chris wasn't just a transaction; it was a partnership.”
Founder & CEO
Founder & CEO, Skyhaven Group
“Chris guided us through financial planning with expertise and empathy, understanding goals and providing direction amid complexity.”
Founder
Founder, Clera Healthcare Ltd
“Chris Barnard proved invaluable, securing £20,000 more R&D relief than previous accountants. Flexible, reliable, highly supportive.”
CEO
CEO, Immortal Games Limited
Frequently asked questions
Everything you need to know before getting started.
What services does Acenteus provide?
We provide outsourced accounting, bookkeeping, payroll, tax compliance and advisory, audit support, corporate finance and business setup services, for both accountancy firms looking to scale capacity and growing businesses that want a full finance function without the overhead.
How does outsourcing my accounting to Acenteus work?
We start with a free consultation to understand your needs, then agree a fixed scope and fee. You'll get a dedicated team working in your existing systems (or we'll set them up for you), with regular reporting and a named contact you can reach any time.
Is my data safe with you?
Yes. We are fully UK GDPR compliant, use encrypted cloud platforms, and follow strict security-first processes for handling client records. Access is controlled and audited at every stage.
How much does it cost?
Pricing depends on the scope and volume of work, but it's always a transparent fixed fee agreed before we start, typically a fraction of the cost of hiring in-house. Book a free consultation and we'll give you a clear, no-obligation quote.
How quickly can we get started?
Most clients are fully onboarded within a week. After your free consultation we handle the setup, data migration and handover, with minimal disruption to your day-to-day operations.
Ready to Scale Your Finance Operations?
Book a free, no-obligation consultation and see how Acenteus can save you time and improve accuracy.
Get In Touch
Tell us about your business and we'll get back to you within one working day.
Plus X Innovation, Lewes Road, Brighton and Hove, Brighton, England, BN2 4GL
Book a Free Consultation
Tell us about your needs and we'll get back to you within one working day.