CIS & Bookkeeping Services for Construction Businesses
Stay compliant, avoid HMRC penalties, and get back to running your jobs, not chasing CIS deductions.
CIS was meant to simplify construction tax but for most contractors, it’s become a monthly headache. We take care of everything: filing your CIS300 returns, verifying subcontractors, and keeping your books in order. No more spreadsheets. No more missed deadlines. Just accurate, reliable financial control.
Complete CIS Management for Contractors
We handle every part of your CIS process, from verifying subcontractors to submitting returns. Our goal is to keep you compliant, avoid HMRC penalties, and ensure your projects run smoothly.
✅ CIS300 returns filed accurately and on time
✅ Same-day subcontractor verification
✅ Precise deduction calculations every month
✅ Professional payment & deduction statements
✅ Gross payment status applications handled
Ready to simplify your CIS process?
Book a free consultation and we’ll review your setup, resolve any issues, and manage your CIS compliance from start to finish.
✅ Trusted by UK contractors across multiple trades
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⭐ Most Popular Plan
CIS & Bookkeeping Packages
Tailored for Contractors Who Want Clarity and Control
Contractor Essentials
£495/month
Compliance & Bookkeeping
CIS submissions & HMRC filing
Bookkeeping & Reconciliations
VAT & Payroll Processing
Basic Monthly Summary Report
Growth Contractor
£795/month
Finance & Cashflow
Everything in Essentials
Monthly management reports
Cashflow forecasting
Quarterly review call
Pro Contractor
£1195/month
Finance & Project Management
Everything in Growth
Project job costing & profitability tracking
Custom financial dashboards
Monthly strategy & advisory calls
Always On Time
“Before working with Assured, I worried every month about CIS penalties. Now everything is filed early and I never have to think about deadlines.”
Ryan S.
Groundworks Contractor
Stress-Free CIS Support
“They handle everything for us — subcontractor checks, CIS returns, and statements. It’s one less thing I ever need to worry about.”
Jack T.
Construction Company Owner
Which Package Is Right For You?
Tier
Contractor
Essentials
Growth Contractor
Pro Contractor
Best For
Self-employed contractors or small construction firms with a few subcontractors.
Established contractors managing several projects and suppliers.
Larger or scaling firms running multiple concurrent projects and teams.
Typical Setup
Up to 5 subcontractors, straightforward bookkeeping and CIS returns.
5–15 subcontractors, regular VAT returns, supplier invoices, and payroll.
15+ subcontractors, multi-site operations, materials & labour cost tracking.
Goal / Outcome
Stay compliant, organised, and penalty-free with simple, reliable bookkeeping.
Get clear financial reports and manage cashflow confidently while growing.
Gain full financial visibility per project, optimise profit margins, and plan strategically.
Not sure which plan fits your business?
Book a free consultation
We’ll review your current setup and recommend the right package for your size and goals.
Why Professional CIS Support Matters
Managing CIS yourself can feel straightforward at first, but it only takes one small error for problems to build up.
- One missed submission can trigger HMRC penalties.
- Manual deductions can lead to overpayments.
- Subcontractor verification delays can hold up your entire job.
It might look fine at first, but small mistakes can quickly turn into lost time and unexpected costs.
With Assured Accounting, you get:
✅ Accurate CIS returns filed on time every month
✅ Same-day subcontractor verification
✅ Clear payment and deduction statements
✅ Expert support from accountants who understand construction
No stress. No missed deadlines. No HMRC surprises.
Need help with a late or emergency filing? We can take over immediately and get you back on track. Let us make CIS compliance simple, reliable, and completely handled for you.
One monthly fee. Every CIS box ticked.
Need an emergency CIS filing? We can submit your return today.
Starting fresh? We’ll get you set up from day one and ensure every future filing is accurate and on time.
Let’s take the stress out of CIS so you can focus on running your projects with confidence.