Integrations/HMRC CIS

Construction Software with HMRC CIS Integration

Available

Problem: Manual CIS verification is slow, error-prone, and leaves you scrambling for evidence when HMRC asks questions. Outcome: Verify subcontractors against HMRC in seconds, apply correct deduction rates automatically, and keep timestamped evidence for audits.

HMRC CIS verificationAutomatic deduction ratesTimestamped evidenceAudit-ready records

See It In Action

See verification status for all subcontractors, run new verifications, and access evidence instantly.

CIS Verification Dashboard
Compliance / CIS
CIS Verification Dashboard

One-click HMRC CIS verification

Verification status by subcontractor

Deduction rate visibility (0%, 20%, 30%)

Timestamped verification evidence

Expiry and re-verification reminders

Status
Connected
Last sync
Just now
Workflow
Connect → Configure → Sync → Monitor
Auto / Manual

Example UI preview. Book a demo to see your exact workflow.

How It Works

Site Samurai connects to HMRC to verify subcontractors and store the evidence. Here's the workflow:

  1. 1

    Add subcontractor details

    Enter the subcontractor's UTR, company/trading name, and National Insurance number (for sole traders).

  2. 2

    Run CIS verification

    Click verify and Site Samurai checks the details against HMRC's CIS database in real-time.

  3. 3

    Store verification evidence

    The verification result is stored with a timestamp — proof of when you verified and what HMRC returned.

  4. 4

    Apply correct deductions

    The deduction rate (0%, 20%, or 30%) is set automatically based on the verification result.

  5. 5

    Re-verify when needed

    Get reminders when verifications are due for refresh or when HMRC status may have changed.

Integration Features

Everything you need to connect HMRC CIS with your construction workflows.

Real-time HMRC verification

Verify subcontractors against HMRC's CIS database in seconds, not hours.

Timestamped evidence storage

Keep proof of verification with date, time, and HMRC response for audits.

Automatic deduction rates

Deduction rates (0%, 20%, 30%) are set automatically based on HMRC status.

Sole trader and company support

Verify both limited companies and sole traders with the right identifiers.

Bulk verification

Verify multiple subcontractors at once when onboarding a new supply chain.

Re-verification reminders

Get prompted when it's time to re-verify subcontractors.

Failed verification alerts

If a verification fails, you're alerted so you can investigate before paying.

Integration with payments

Verified deduction rates flow through to subcontractor payment calculations.

Use Cases

Commercial Administrators

Verify new subcontractors as part of onboarding without logging into HMRC separately.

Payroll teams

Ensure correct CIS deductions are applied before processing payments.

Compliance officers

Maintain audit-ready evidence of all CIS verifications.

Finance Directors

Reduce CIS-related HMRC enquiries with proper verification records.

Who It's For

  • Contractors with subcontractor supply chains
  • Commercial administrators handling onboarding
  • Payroll and accounts teams processing CIS
  • Compliance officers responsible for HMRC records
  • Businesses scaling their subcontractor base

Proof & Confidence

"We used to spend hours on the HMRC portal verifying subcontractors. Now it's built into our onboarding workflow and takes seconds."

Commercial Administrator, UK contractor
CIS verification time cut by 90%
Seconds
Verification time
Reduced
HMRC enquiries

FAQ

Common questions about the HMRC CIS integration.

How does Site Samurai verify subcontractors with HMRC?
Site Samurai connects to HMRC's CIS online service to verify subcontractor details. You need to be registered as a contractor with HMRC CIS and authorise Site Samurai to make verification requests on your behalf.
What information do I need to verify a subcontractor?
For limited companies: UTR (Unique Taxpayer Reference) and company name. For sole traders: UTR, National Insurance number, and trading name. Partnership verification requires the partnership UTR.
What are the CIS deduction rates?
HMRC returns one of three rates: 0% (gross payment status), 20% (standard deduction), or 30% (not registered/failed verification). Site Samurai applies the returned rate automatically.
How long is a CIS verification valid?
HMRC recommends verifying subcontractors at least once per tax year. Site Samurai tracks verification dates and prompts you when re-verification is due.
What happens if verification fails?
If HMRC returns a failed verification (e.g., UTR not found), Site Samurai alerts you and applies the 30% deduction rate. You should investigate with the subcontractor before making payments.
Does this replace CIS monthly returns?
No. Site Samurai handles verification and stores evidence, but you still need to submit monthly CIS returns to HMRC (either directly or via your payroll/accounting software).

Related Solutions

CIS Management Software

Complete CIS workflow from verification to deductions.

Learn more
Subcontractor Onboarding

Onboard subcontractors with CIS verification built-in.

Learn more
CIS Verification Software

Dedicated CIS verification workflows.

Learn more

Other Integrations

XeroSageMicrosoft 365View all integrations →

Ready To Connect HMRC CIS?

Start a free trial and connect your HMRC CIS account in minutes.