Contractor & Temporary Workforce Payroll — Done Properly
CIS, subcontractors and temporary labour handled with full HMRC visibility and balance-sheet clarity.
From £4 per subcontractor / month — CIS, deductions and monthly returns managed and reconciled.
Managing temporary labour is where payroll, tax, and cashflow go wrong fastest.
If you use subcontractors, agency workers, or temporary labour:
- Self employed status compliance
- Incorrect CIS deductions
- Verification errors
- Late or incorrect returns
- Mis-posted liabilities
- Cashflow surprises
These aren’t “admin problems” — they’re governance and financial control issues.
That’s where Harbour comes in.
Most payroll providers will process your CIS returns. What they won’t do is tell you when your HMRC CIS account doesn’t match what’s sitting in Xero, or flag that a subcontractor verification has lapsed before it becomes a problem. Harbour is built around the oversight that contractor payroll specifically needs — because in this space, the errors are expensive and HMRC scrutiny is higher.
Built in high-risk payroll environments
I’ve spent years running and fixing contractor and temporary labour payrolls — where HMRC scrutiny is higher, margins are tighter, and mistakes get expensive fast.
That experience now underpins how Harbour supports all clients.
If your payroll involves subcontractors, CIS, or fluctuating labour costs, you need more than a processor — you need someone who understands how payroll & CIS flows through:
- HMRC accounts
- Your balance sheet
- Your cashflow
What Harbour supports
- CIS registration and subcontractor verification
- Weekly / fortnightly contractor payroll
- Accurate CIS deductions and monthly returns
- Correct posting of PAYE, CIS and NIC liabilities
- Alignment with Xero (or your accounts system)
- Ongoing compliance monitoring and clean-up
Not just – “Submitted” – but reconciled, understood and controlled.
Part of Harbour Managed Payroll
Contractor workforce support isn’t a bolt-on service.
It sits inside Harbour’s Managed Payroll model — where payroll is treated as a financial control system, not just a process.
That means:
- Clean HMRC accounts
- Clear liabilities
- Fewer surprises
- Better cashflow visibility
Who is this for
- Construction and trades
- Facilities management
- Engineering and maintenance
- Logistics and labour-heavy SMEs
- Any business using subcontractors or temporary labour
Free Payroll & Compliance Health Check
We’ll review your payroll setup, HMRC liabilities, CIS position, and how it all appears in your accounts.
Benefits to Your Business
Contractor Process
Why Choose Harbour?
Frequently Asked Questions
Most businesses managing subcontractors know CIS well enough to get by — but ‘getting by’ and ‘getting it right’ aren’t always the same thing. If any of these questions sound familiar, it’s worth a conversation
Yes — if you have a combination of employees on PAYE and subcontractors under CIS, we manage both as part of the same payroll service. Everything is reconciled together so nothing falls between the two.
Each month we verify any new subcontractors, process payments with correct deductions, submit the monthly return to HMRC, produce payment and deduction statements for your subcontractors, and reconcile the CIS liability in your accounts. You get a clear picture of what’s been paid, what’s been deducted, and what’s owed.
More than most people realise. CIS is one of HMRC’s more actively monitored schemes — late returns, incorrect deductions and verification failures all attract attention. Staying reconciled and current is the best protection.
HMRC can issue penalties and demand backdated amounts, and subcontractors may have been over or underpaid. We’ll identify the errors, calculate the correct position, and work through a clean-up so you know exactly where you stand.
If your HMRC CIS account, Xero and your balance sheet all agree to the penny every month, you’re probably fine. If you’re not sure — or you know they don’t — that’s exactly what the free check is designed to find out.
Yes. We’ll review your current position — verifications, deductions, returns and how it all sits in your accounts — correct what’s wrong, and take it over from there. Most clients are surprised how much has quietly drifted.
It’s one of the most common grey areas we see. Getting it wrong creates real risk — incorrect employment status can trigger HMRC investigation and backdated liabilities. We’ll help you understand where your workers sit and make sure they’re set up correctly.
If you’re a contractor who pays subcontractors for construction work, yes — you need to register with HMRC as a CIS contractor. If you’re unsure whether your work falls under CIS, we’ll tell you quickly as part of the free check.
