Important Reminder for Flippers: Register for CIS to Avoid Fines - property flips CIS
Updated: Mar 13
If you are involved in property flipping, there is a crucial step you cannot afford to miss: registering for the Construction Industry Scheme (CIS). Recent changes have introduced fines for those who fail to register, making it essential for flippers to understand the requirements and act promptly. This post explains why CIS registration matters, how to register, and what happens if you don’t comply.
What is CIS and Why Does It Matter for Flippers?
The Construction Industry Scheme is a tax deduction system managed by HM Revenue & Customs (HMRC) in the UK. It applies to contractors and subcontractors working in construction, including property flippers who carry out renovation or building work.
Under CIS, contractors deduct money from payments to subcontractors and pass it to HMRC. This ensures tax is collected at source and helps prevent tax evasion. If you flip properties and hire subcontractors or do construction work yourself, CIS registration is mandatory.
Failing to register means you risk:
Fines and penalties from HMRC
Difficulty claiming tax refunds or allowances
Delays in payments from contractors who must verify CIS registration before paying
For flippers, this can mean unexpected costs and cash flow problems that could derail your projects.
How to Register for CIS
Registering for CIS is straightforward but must be done before you start working as a subcontractor or contractor. Here’s how:
Determine your role
Are you a contractor (someone who hires subcontractors) or a subcontractor (someone who carries out work for a contractor)? Flippers often act as subcontractors but may also be contractors if they hire others.
Register online with HMRC
Visit the HMRC website and complete the CIS registration form. You will need your National Insurance number and Unique Taxpayer Reference (UTR).
Wait for confirmation
HMRC will send you a letter confirming your registration and providing your CIS verification number.
Verify subcontractors
If you are a contractor, you must verify subcontractors with HMRC before making payments to them.
Keep records
Maintain detailed records of payments, deductions, and CIS verification for tax purposes.
Registering early avoids fines and ensures smooth financial transactions during your flipping projects.
Examples of CIS Fines and How to Avoid Them
HMRC has recently increased enforcement of CIS rules. Here are some examples of fines flippers have faced:
A property flipper who started subcontracting work without registering was fined £300 for late registration.
Another flipper failed to verify subcontractors and was fined £1,000 for non-compliance.
A contractor who did not deduct CIS payments correctly faced penalties exceeding £2,000.
Avoid these issues by:
Registering before starting any construction-related work
Verifying all subcontractors with HMRC
Deducting the correct amount of tax from payments
Keeping accurate records and submitting returns on time
What Happens If You Don’t Register?
Ignoring CIS registration can lead to serious consequences:
Fines and penalties that increase the longer you delay
Interest charges on unpaid tax deductions
Legal action from HMRC in extreme cases
Damage to your reputation with contractors and suppliers
For flippers, these consequences can add unexpected costs and complicate your projects. It’s better to comply early and avoid these risks.
Tips for Flippers to Stay Compliant
To keep your flipping business on the right side of CIS rules, follow these tips:
Register with HMRC as soon as you start any construction work
Understand your role clearly: contractor or subcontractor
Verify all subcontractors before paying them
Deduct the correct CIS tax from payments and pass it to HMRC
Keep detailed records of all transactions and communications
Submit CIS returns on time to avoid penalties
By staying organized and informed, you can focus on your flipping projects without worrying about fines.
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