CIS Tax Return Services for UK Accountancy Practices
With over a decade of hands-on experience in UK accounting and compliance, we deliver CIS return services that work as an extended arm of your practice - CIS300 returns prepared, subcontractors verified, statements drafted, and reconciliations tied out before every 19th deadline.
CIS Return Services for UK Accountancy Firms of Every Size.
We work as an extended arm of your practice across leading software including Xero, QuickBooks, Sage, FreeAgent, IRIS, TaxCalc and BTCSoftware. Whether you support a handful of CIS contractors or manage an entire construction portfolio, our CIS return services slot directly into your existing workflow with zero disruption.
Solo and Small Practices
- Affordable per return pricing, no retainer
- No minimum volume commitment
- Works inside your existing CIS software
- Same turnaround from the very first return
Growing Construction Practices
- Scale CIS capacity as your contractor base grows
- No permanent headcount required
- Dedicated account contact for your firm
- Senior reviewed output on every return
Mid Size and Multi Office Groups
- High volume CIS portfolio management
- Subcontractor onboarding and verification at scale
- SLA tracking and monthly volume reporting
- Gross status applications and reviews supported
CIS Return Services,
End to End.
We assist contractors in meeting their CIS obligations efficiently - CIS return preparation and submission, verification of subcontractors, deduction statements, and CIS reconciliation. Every stage of the CIS cycle, handled before every 19th deadline.
CIS Return Preparation & Submission
- CIS300 return preparation by the 19th every month
- Deduction calculations for all subcontractor payments
- Nil return submissions where required
- Filing confirmation and HMRC receipt tracking
Verification of Subcontractors
- Subcontractor verification through HMRC online
- Status confirmation (gross, net 20%, unregistered)
- Gross payment status applications and annual reviews
- New subcontractor onboarding and record setup
Deduction Statements
- Payment and deduction statements (PDS) for every subcontractor
- Statements formatted to HMRC requirements
- Monthly distribution to subcontractors on schedule
- Statement reconciliation against return figures
CIS Reconciliation
- CIS control account reconciliation to return figures
- Reconciliation against bookkeeping ledger and bank payments
- Prior period adjustment workings where needed
- HMRC enquiry and compliance check support
Your clients' software.
Our team knows it.
No onboarding friction. No tool switching. We step straight into the software your practice already runs on and get to work from day one.
Talk to our team
Outsource: But Why?
We are a professionally managed accountancy outsourcing firm dedicated to supporting UK accountancy practices with reliable, efficient, and cost-effective CIS return services. Here's exactly what you gain when you work with us.
10+ Years UK Accounting Experience
Over a decade of hands-on experience in UK accounting, taxation, and compliance. Our team understands the technical requirements, regulatory framework, and 19th-of-the-month CIS deadlines expected by UK firms.
Cost-Effective & Scalable Solutions
Pay per return, not per headcount. Free your senior team from monthly CIS preparation cycles and scale capacity up or down as your contractor portfolio grows. No permanent overhead, no minimum commitment.
Strong Data Security & Confidentiality
NDA and DPA signed before any work begins. Encrypted file transfer, role-based access controls, and full GDPR compliance on every CIS engagement. Your client data is treated with the protocols UK firms demand.
Quick Turnaround Times
Every CIS300 prepared and delivered well before the 19th of the month. No scrambling. No HMRC penalties. Just clean returns ready for your reviewer to sign off and submit on time, every cycle.
Dedicated Team Support
Senior reviewed output on every return. A dedicated account contact for your firm. Round-the-clock support so deadlines never slip and reviewer queries are resolved without delay.
Six Reasons UK Firms Choose Us for CIS Return Services.
Expert reviewed CIS packs, zero penalty track record, and seamless software compatibility, backed by hands-on sector experience across Construction, Real Estate, Retail, Professional Services, Healthcare, IT, Hospitality and Owner-Managed Businesses.
Up to 50% cost saving
Reduce CIS preparation costs compared to in house senior staff time without compromising on accuracy, verification rigour, or HMRC compliance.
19th deadline always met
Returns prepared and delivered before the 19th of every month. No exceptions, no delays, and no last minute pressure on your in house team.
HMRC compliant returns
All CIS300s prepared in line with current HMRC rules. Verifications, deductions, and statements all aligned to current scheme requirements.
Senior reviewed output
Every CIS pack is quality checked by a qualified senior before delivery. You receive reviewer ready work with reconciliations and statements complete.
Scalable monthly capacity
Add CIS preparation resource instantly as your contractor portfolio grows. Scale back when needed. No contracts, no minimums, no permanent cost base.
GDPR secure delivery
NDA signed before work begins. Encrypted file transfer, role based access controls, and full GDPR compliance on every CIS engagement.
How It Works
Share Source Data
Secure upload of subcontractor payments and CIS records
Subcontractor Verification
Statuses confirmed through HMRC online before deductions are run
CIS300 Prepared
Deductions calculated, return prepared, statements drafted
Senior Review
Quality check by senior before delivery to your reviewer
“The 19th used to be the most stressful day of every month for our team. Since we moved our CIS workload to Probal Global the returns arrive verified, reconciled and ready to submit. We have not had a single HMRC penalty since we started and we have added 35 contractor clients to the portfolio without any extra headcount.”
35
New contractor clients added with zero extra headcount
Probal Global vs Your Other Options.
See why UK practices choose dedicated outsourcing over in house CIS preparation or ad hoc freelancers for their contractor portfolio.
Real questions from UK accountancy practices answered honestly.
If you're considering bringing in external support for your construction clients, you probably have a few questions. Here are the ones we get asked most, with straight answers.
Still have questions? Get in touchWe handle the full CIS workflow for contractor clients - monthly CIS300 returns, subcontractor verification, gross payment status applications and reviews, deduction statements, and CIS reconciliation against the bookkeeping ledger. We also prepare CIS self assessment workings for subcontractor clients.
Yes. We work directly inside the practice and accounting software your firm already uses - Xero, QuickBooks, Sage, FreeAgent, and the major UK CIS-capable platforms. Your submission goes through your normal channel with no changes to your existing process.
Every CIS300 is prepared and delivered well ahead of the 19th. Once we receive source data each month, we verify subcontractors through HMRC, calculate deductions, prepare the return and statements, reconcile against the ledger, and hand the pack to your reviewer with time to spare. We do not chase you the night before.
Yes. We process gross payment status applications - reviewing eligibility, preparing the application pack, and liaising with HMRC on the client's behalf. We also handle annual reviews and renewals so clients do not lose their status from missed deadlines.
Yes. We manage CIS workflows across your entire contractor portfolio. We track each client's monthly cycle and ensure every return is delivered ahead of the 19th deadline, whether you have 5 contractor clients or 500.
We sign an NDA and DPA before any work begins. All files are transferred via encrypted channels. No client data is stored after delivery. We are GDPR registered and ISO 27001 aligned.
Amendments based on your reviewer feedback are included at no extra charge. We turn around any changes within 24 hours so your submission window is never put at risk.
Free Trial Available
Try Probal CIS Returns Free.
No Cost, No Commitment.
Send us a real client file. We will verify subcontractors, prepare the CIS300 return, draft statements, and deliver a reviewer ready pack before the next 19th so the quality speaks for itself.