The Construction Industry Scheme (CIS) makes contractors deduct tax at source from subcontractors and pay over CIS payments monthly to HMRC. Not filing proper CIS returns on time can result in expensive penalties, compliance problems, and cash flow issues.
At Melon Accountants, we offer complete CIS services—registration of subcontractors and contractors, subcontractor confirmation, deduction calculation, submission of monthly CIS returns, and responding to HMRC queries. Whether you‘re a contractor who has an established team or a subcontractor who gets refunded, we make it easy for you, ensuring it is compliant and hassle-free.
We also provide tailored advice on how CIS impacts your tax returns, bookkeeping, and payroll—especially if you’re working under multiple contracts or managing a growing construction business.
* Accurate monthly CIS returns submitted on time
* Avoid late penalties and HMRC non-compliance
* Support with subcontractor verification and tax rates
* Guidance on claiming tax refunds (for subcontractors)
* Complete integration with your payroll and bookkeeping
* Construction builders using subcontractors
* CIS operating subcontractors
* Builders‘ or tradespeople‘s multiple projects or construction companies’ multiple projects
* Single traders or limited companies of construction
* Accountants or directors needing help with HMRC CIS returns
Contractor and subcontractor CIS registration
Subcontractor verification with HMRC
Monthly CIS deduction calculations and returns
CIS statements for each subcontractor
Annual summary and reporting
Support with refunds, overpayments, or compliance queries
CIS Returns: Due by the 19th of each month for the previous tax month Failure to file leads to automatic penalties, starting at £100
UTR number and HMRC login credentials
Subcontractor details (UTR, NI, verification status)
Payment records and invoices for subcontractors
Previous CIS submissions (if switching from another accountant)
Explore examples of how we’ve made tax returns simpler and more accurate.
✅ Subcontractor Claiming a Tax Refund
A CIS subcontract plasterer who was self-employed had overpaid tax during the year. We completed his Self Assessment, recovering £1,600 in overpaid CIS deductions.
✅ Small Group of Subbies Contractor
We do CIS verification and returns each month for a contractor who has 5 regular subcontractors—no HMRC penalties and payslip-format CIS statements every month.
Have a query about our services, pricing, or how we work? We’ve compiled the most common questions our clients ask — all in one place. If you still need help, don’t hesitate to reach out directly.
Our head office is in London, but we serve clients across the UK through cloud-based accounting platforms.
We work with leading cloud accounting platforms like Xero and QuickBooks.
Yes, we provide tailored accounting and tax services for a range of industries including construction, hospitality, healthcare, property, and startups. Our sector-specific expertise ensures advice that fits your business.
You can contact us via phone at 020 3950 8470, email at info@melonaccountants.co.uk, or through our website’s contact form.
Our bookkeeping services encompass data entry, bank reconciliations, accounts receivable and payable management, financial reporting, and VAT returns.
We manage real-time information (RTI) PAYE filing, email payslips to employees and employers, provide payroll cost analysis, advise on payroll-related issues, report to your auto-enrolment pension provider, and assist with auto-enrolment correspondence
Yes, we provide on-demand virtual finance director services to help businesses get the financial expertise they need without the cost of hiring a full-time CFO.
Certainly. We offer company formation and secretarial services, including advice on business structures, maintaining company registers, Companies House filings, and planning regarding different business entities.
Our head office is in London, but we serve clients across the UK through cloud-based accounting platforms.
We work with leading cloud accounting platforms like Xero and QuickBooks.
Yes, we provide tailored accounting and tax services for a range of industries including construction, hospitality, healthcare, property, and startups. Our sector-specific expertise ensures advice that fits your business.
You can contact us via phone at 020 3950 8470, email at info@melonaccountants.co.uk, or through our website’s contact form.
