Construction Accountant & CIS Specialist in Worcester

CIS returns, subcontractor verification, reverse charge VAT -- from people who know the 19th of every month matters

Construction Accountants Who Know CIS Inside Out

It's the 18th. Your CIS300 is due tomorrow. You've got three new subbies who haven't been verified. One invoice doesn't split labour and materials. And your last accountant still thinks reverse charge VAT is "optional." Sound about right?

CIS is unforgiving. Late returns cost £35/month, per return. Wrong deduction rates mean you're personally liable. Unverified subcontractors trigger 30% deductions that destroy working relationships. We deal with this every single day for construction firms across Worcester, Birmingham and the West Midlands.

Main contractors, subcontractors, M&E specialists, groundworks firms, roofers -- whatever your trade, we handle the CIS returns, the reverse charge VAT, the retention accounting and the project costing. You focus on winning and delivering work. We keep HMRC off your back.

What is the Construction Industry Scheme (CIS)?

CIS is HMRC's mandatory tax deduction scheme for the construction industry. If you're a contractor paying subcontractors, you must deduct tax at source -- 20% for registered subbies, 30% for unregistered -- and pass it to HMRC. Every month. No exceptions. Fail to comply and you're personally on the hook for the unpaid tax.

The scheme covers most construction operations, including:

  • Building new structures and extensions
  • Repairs, alterations and decorating
  • Installation of heating, lighting, plumbing and ventilation systems
  • Demolition and site preparation
  • Internal fit-out and finishing work
  • Scaffolding and temporary structures

If you hire subcontractors -- or work as one -- CIS compliance is non-negotiable. Penalties stack up fast: £100 for a late return, escalating to £300 after two months, then 5% of the CIS deductions due. After 12 months late, HMRC can charge an additional £3,000 or 100% of the tax, whichever is higher. We make sure you never get there.

Our Construction & CIS Accounting Services

CIS Monthly Returns & Verification

The CIS300 return is due by the 19th of every month. No grace period. We verify every subcontractor with HMRC before you pay them, calculate the correct deduction, file the return and issue payment statements. The full cycle, handled properly:

  • Verify all subcontractors with HMRC before payments are made
  • Calculate correct CIS deduction rates (20% or 30%)
  • Prepare and submit accurate CIS300 monthly returns
  • Issue payment and deduction statements to subcontractors
  • Reconcile CIS deductions with PAYE payments
  • Maintain compliant CIS records for HMRC inspections

We ensure your returns are filed on time, every time, so you avoid penalties and keep your business running smoothly.

Subcontractor Registration & Management

Unregistered? You're losing 30% of every payment to CIS deductions instead of 20%. That's cash you could be using on materials, tools or wages. Register for CIS and the deduction drops immediately. Qualify for gross payment status and it drops to 0%. We help subcontractors:

  • Register for CIS and gross payment status (if eligible)
  • Track CIS deductions throughout the year
  • Claim back overpaid CIS deductions through self-assessment
  • Maintain proper records to support tax returns
  • Understand when CIS applies vs when it doesn't

For subcontractors who've had CIS deducted all year, we often secure significant tax refunds by accurately accounting for deductions and claiming all available reliefs and allowances.

Reverse Charge VAT for Construction

The domestic reverse charge for construction services has been mandatory since March 2021. If you're a VAT-registered subcontractor who isn't an end user, you don't charge VAT on your invoices -- the contractor accounts for it instead. Simple in theory. A nightmare in practice.

We see firms getting this wrong constantly. Wrong VAT treatment on invoices. Denied input tax claims. Cash flow holes where VAT was charged but shouldn't have been. We sort it out:

  • Guidance on when reverse charge applies (and when it doesn't)
  • VAT invoice templates that meet HMRC's reverse charge requirements
  • Quarterly VAT return preparation accounting for reverse charge transactions
  • Reconciliation of reverse charge VAT with CIS reporting
  • Training for your admin staff on reverse charge procedures

Our construction accountants in Worcester and Birmingham stay up to date with every change in VAT legislation, so you don't have to.

Project Accounting & Job Costing

Managing multiple construction projects simultaneously requires robust financial systems. We help you implement project accounting methods that track costs and profitability on a job-by-job basis:

  • Set up job costing systems in your accounting software
  • Track direct costs (labour, materials, subcontractors) per project
  • Allocate indirect costs (plant, tools, overheads) across jobs
  • Monitor work-in-progress and contract valuations
  • Produce profitability reports by project, client, and service line
  • Identify unprofitable contracts before they drain your cash flow

With proper project accounting, you can see which jobs are making money and which are costing you—before it's too late to take corrective action.

Contract Valuation & Revenue Recognition

For longer-term construction contracts, recognising revenue correctly is essential for accurate financial reporting and tax planning. We advise on:

  • Stage payment and retention accounting
  • Revenue recognition under contract milestones
  • Accruals and prepayments for construction work-in-progress
  • Valuation certificates and payment applications
  • Bad debt provisions for disputed contracts

Whether you're preparing year-end accounts for Companies House or management accounts for your bank, we ensure your construction contracts are reflected accurately in your financials.

Bookkeeping for Construction Businesses

Construction bookkeeping is more complex than most industries due to CIS deductions, retention payments, stage payments, equipment purchases, and VAT reverse charges. We provide specialist construction bookkeeping services:

  • Record all supplier invoices, subcontractor payments, and income
  • Reconcile bank accounts, credit cards, and supplier statements
  • Track CIS deductions and match to monthly returns
  • Manage retention payments and release schedules
  • Code transactions by job for accurate project costing
  • Produce monthly management accounts showing project profitability

We use cloud accounting software like Xero and QuickBooks to give you real-time visibility into your construction business finances from anywhere.

Tax Planning for Construction Companies

Construction businesses face unique tax planning opportunities and risks. Our tax specialists help you:

  • Structure your business efficiently (sole trader vs limited company)
  • Claim capital allowances on plant, machinery, and vehicles
  • Maximise deductions for tools, equipment, and work clothing
  • Plan for fluctuating income and manage tax cash flow
  • Navigate IR35 rules if you operate through a personal service company
  • Prepare accurate self-assessment and corporation tax returns

Many construction business owners overpay tax simply because they don't claim all the reliefs available to them. We ensure you pay the right amount—and not a penny more.

Common CIS Mistakes & How to Avoid Them

Every one of these costs real money. We see them every week from firms switching to us after their previous accountant dropped the ball:

1. Failing to Verify Subcontractors Before Payment

If you pay a subcontractor without verifying them with HMRC first, you can't deduct CIS. You'll be liable for the tax yourself. We verify every subcontractor before you make a payment, ensuring you're protected.

2. Using the Wrong Deduction Rate

Registered subcontractors pay 20%, unregistered pay 30%, and gross payment status holders pay 0%. Apply the wrong rate and you'll face penalties and reconciliation headaches. We track each subcontractor's status and apply the correct rate automatically.

3. Missing Monthly CIS Filing Deadlines

CIS returns are due by the 19th of each month. Miss the deadline and HMRC charges £100 per return. We file your returns on time, every month, with reminders and proactive communication.

4. Incorrect Treatment of Materials

CIS deductions apply to labour only—not materials. If a subcontractor provides materials, you must separate the labour and materials cost on invoices. We help you structure invoices correctly to avoid disputes.

5. Ignoring Reverse Charge VAT Rules

Applying standard VAT when reverse charge applies (or vice versa) creates VAT errors that are costly to correct. We ensure every construction invoice is treated correctly under current VAT law.

Who We Help

Our construction accounting services in Worcester and Birmingham are designed for:

Main Contractors

Manage multiple subcontractors, monthly CIS returns, project accounting, and reverse charge VAT

Subcontractors

Register for CIS, track deductions, claim tax refunds, and file self-assessment returns

M&E Contractors

Mechanical, electrical, and HVAC specialists with complex project accounting needs

Groundworks & Civil

Plant-heavy businesses requiring capital allowances planning

Roofing & Cladding

Specialist trades working on new builds and refurbishments

Joinery & Carpentry

Workshop-based and site-based carpentry businesses

Decorating & Finishing

Painting, plastering, and interior fit-out contractors

Scaffolding & Temporary Works

Equipment-intensive businesses with complex VAT and CIS considerations

Whether you're a one-person subcontractor or a regional main contractor with a team of 50, we tailor our services to fit your business model and growth ambitions.

Why Choose Severn Accounting for Construction & CIS?

Your accountant should know the difference between a CIS300 and a CIS304. They should understand why retention payments create timing differences. They should be able to explain when reverse charge applies to scaffolding hire but not equipment hire. That's us:

Deep Construction Expertise

We know CIS inside out and have years of experience with main contractors and subcontractors

Proactive Compliance

We file on time, track deadlines, and communicate proactively to keep you compliant

Project Accounting Focus

We help you track profitability by job so you can make better commercial decisions

Reverse Charge VAT Specialists

We stay ahead of VAT changes and ensure your invoicing is correct

Local to Worcester & Birmingham

We understand the regional construction market and work with clients across the West Midlands

Fixed-Fee Pricing

No surprises—just transparent pricing from £35/month for CIS returns

As ACCA licensed accountants with advanced QuickBooks and Sage certifications, we bring specialist construction tax and VAT expertise to every client. You get award-winning local service with deep sector knowledge.

Our Construction Accounting Pricing

We offer fixed-fee pricing for construction and CIS services, so you know exactly what you're paying each month:

£35/month

CIS Monthly Returns

Depending on number of subcontractors

Included

Subcontractor Verification

Included in monthly return service

£35/month

Construction Bookkeeping

Depending on transaction volume

£75/qtr

VAT Returns

Reverse charge included

£300

Project Accounting Setup

One-off fee

£200

Self-Assessment

For subcontractors

£600

Corporation Tax & Year-End Accounts

Complete annual compliance

We'll provide a fixed quote after understanding your business structure and activity levels. No hidden fees, no surprises.

Stop Worrying About CIS. Start Winning More Work.

The 19th shouldn't keep you up at night. Reverse charge VAT shouldn't be a guessing game. Your CIS deductions should reconcile first time, every time. We take the compliance burden off your shoulders so you can focus on tendering, building and getting paid.

Based in Worcester with an office in Birmingham. We serve construction firms across Worcestershire, the West Midlands and beyond. Cloud accounting means we work in real time with your data -- but we're always available for a face-to-face when you need one.

Get My CIS Sorted

We also offer comprehensive payroll services for construction firms with employed staff alongside subcontractors, ensuring PAYE, CIS, and pension contributions are handled seamlessly in one place.

Ready to Get Started?

Get in touch for a free, no-obligation consultation. Our expert team in Worcester and Birmingham is here to help.