Accounting Services for CIS Contractors & Subcontractors
The Construction Industry Scheme (CIS) adds a heavy administrative burden to an already demanding job. CIS deductions affect cashflow, paperwork is constant, and mistakes can be costly. Boxed Accounting specialises in CIS accounting, helping contractors and subcontractors stay compliant and reclaim tax.
We work with tradespeople, subcontractors and construction firms across the UK.
Who We Work With
- CIS subcontractors
- Main contractors
- Builders and tradespeople
- Construction companies
Common CIS Challenges
20% or 30% CIS deductions reducing cashflow
Large deductions at source can significantly impact day-to-day cashflow.
Delays in receiving tax refunds
Slow repayments can leave you out of pocket for longer than expected.
Monthly CIS reporting requirements
Regular reporting adds admin pressure and increases the risk of penalties.
Missed or unclaimed business expenses
Overlooked expenses can lead to paying more tax than necessary.
How Boxed Accounting Helps CIS Contractors

Accurate CIS tax returns and refund claims
We prepare correct CIS returns and help you reclaim overpaid tax quickly.

Monthly CIS submissions and subcontractor verification
We manage monthly filings and verify subcontractors to keep you compliant.

Digital bookkeeping and expense tracking
Simple, digital systems to track income and expenses accurately.

VAT advice including reverse charge rules
Clear VAT guidance to avoid errors and stay compliant with CIS rules.

Guidance on gross payment status
Support and advice to help you achieve or maintain gross payment status.
Why Choose Boxed Accounting
CIS and construction specialists
Faster, accurate refunds
Minimal admin for you
Clear, jargon‑free advice
What Happens When You Get in Touch
Free consultation
Review of CIS position
Setup and filings handled
Ongoing support
Frequently Asked Questions
When do I receive my CIS refund?
Usually after your tax return is submitted.
Can you manage monthly CIS returns?
Yes — end‑to‑end.
Do you help maximise expense claims?
Yes — to reduce tax and increase refunds.