CIS Accountant for UK Contractors & Subcontractors
CIS accounting for UK contractors and subcontractors covers verification, monthly CIS300 returns, subcontractor statements, and reconciliation of deductions suffered when Construction Industry Scheme rules apply.
Sterling Crest Accountants provides this service remotely to clients across the United Kingdom as an online UK accountant. Consultations are by phone or video call. The Leeds address is the registered office and is not a walk-in office.
About construction industry scheme (cis)
Contractors must verify subcontractors with HMRC, deduct tax at the correct rate unless gross payment status applies, and file monthly CIS300 returns. We maintain subcontractor records and prepare returns from payment data you approve.
Subcontractors need statements of deductions and use suffered amounts as credits on self assessment or corporation tax. We reconcile CIS statements to your accounts and highlight missing certificates.
Gross payment status applications and renewals involve HMRC tests. We provide guidance on documentation HMRC expects but approval remains HMRC’s decision.
CIS interacts with payroll when you employ staff as well as subcontractors. We coordinate figures with payroll and bookkeeping where we provide those services.
Who this service is for
- Construction contractors paying subcontractors
- Subcontractors receiving CIS deductions
- Property developers using subcontract labour
- Trades operating through limited companies in CIS
- Partnerships and sole traders in construction supply chains
- Businesses needing CIS aligned bookkeeping
Common challenges
- Wrong deduction rate because verification lapsed
- CIS300 filed late after busy site weeks
- Subcontractors missing monthly statements
- Deductions suffered not matched to HMRC records
- Materials versus labour split errors on payments
- Gross status expiry not tracked
What is included
- Subcontractor verification checks before first payment
- Monthly CIS300 preparation and submission after approval
- CIS payment and deduction schedules for your records
- Subcontractor statements issued when acting for contractors
- Reconciliation of CIS suffered to statements for subcontractors
- Support claiming CIS credits on tax returns where we act on tax
- Notes on gross payment status evidence requirements
- Coordination with payroll for employed labour
- Listing of unverified subcontractors blocking payment
- Routine HMRC CIS correspondence within scope
How the service works
- 1.Confirm whether you act as contractor, subcontractor or both
- 2.Set up subcontractor records and verification status
- 3.Receive payment lists split labour and materials
- 4.Prepare monthly return and statements for review
- 5.Submit CIS300 and issue statements after approval
- 6.Reconcile suffered deductions into tax work at year end
Documents normally required
- UTR and Companies House details for subcontractors
- Verification references from HMRC checks
- Payment summaries split between materials and labour
- Invoices from subcontractors
- CIS statements received if you are subcontractor
- Prior CIS300 submissions and HMRC notices
- Gross payment status approval letters if held
UK compliance information
- Employment status of workers is not determined by us as part of CIS filing.
- We do not guarantee gross payment status approval.
- Penalties for late CIS300 follow HMRC rules.
- Complex disputes with HMRC on construction status need separate scope.
Key deadlines
CIS300 is due monthly by the 19th after the tax month end. Subcontractor statements have related timing rules. Confirm current HMRC guidance on GOV.UK.
Confirm official dates and rules on GOV.UK. Rules and thresholds can change.
What this work helps you maintain
- Verification completed before payments at wrong rates
- Monthly returns prepared from approved payment data
- Subcontractor statements tied to submitted CIS300
- Suffered deductions reconciled into tax computations we prepare
- Remote CIS support UK wide
Related services
- BookkeepingStructured bookkeeping to keep sales, purchases, bank and cash records accurate and ready for VAT, payroll and year end reporting.
- PayrollPAYE payroll processing, RTI submissions, payslips and year end forms for UK employers.
- Self AssessmentPersonal self assessment for employment, self employment, property, dividends, interest, pensions and disclosed capital gains.
- Corporation TaxCorporation tax computations, CT600 filing and capital allowances for UK limited companies.
Frequently asked questions
Yes, scope depends on your role. Some clients need both contractor returns and subcontractor credit work.
We advise on evidence and application steps. HMRC decides eligibility against turnover and compliance tests.
Bookkeeping can record CIS entries, but CIS300 submission is a separate agreed service.
We re verify and adjust future payments. Prior month corrections may need amended returns within HMRC limits.
Discuss construction industry scheme (cis) with Sterling Crest
Book a free consultation or send an enquiry. Scope and fees are confirmed in writing before any engagement begins.
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