Who this is for
This package is designed for limited companies whose main trade is:
- Domestic or commercial plumbing and heating contractors
- Gas engineers (including boiler installation and servicing)
- Electrical contractors, installers and inspection & testing specialists
- Small firms providing a mix of plumbing, heating and electrical services
Typical income and job types
- Installation work – boilers, bathrooms, rewires, new circuits and fuse boards
- Maintenance contracts – landlords’ gas safety checks, EICRs, planned maintenance
- Emergency call-outs – leaks, breakdowns, no power/heating
- Subcontract work for larger M&E or main contractors (often under CIS)
We make sure your income is clearly split between labour, materials and certification work, so that VAT, CIS and corporation tax are all treated correctly.
Common allowable expenses for plumbing & electrical Ltd companies
As long as they are wholly and exclusively for the business, typical allowable expenses include:
- Materials and fittings – pipe, cable, breakers, boilers, radiators, fixtures
- Small tools and consumables – drill bits, blades, fixings, solder, tapes, fuses
- Plant and equipment hire – access platforms, testers, larger tools and machinery
- Protective clothing and PPE – branded workwear, safety boots, hi-vis, gloves, goggles
- Vans and vehicles – insurance, fuel, servicing, road tax and breakdown cover (business use)
- Trade body fees – Gas Safe, NICEIC, NAPIT, SELECT or similar registrations
- Public liability and professional indemnity insurance
- Mobile phone and data used for business, software and invoicing apps
- Advertising, website costs and job lead platforms
For larger or long-life items (such as test equipment, boilers for demo rooms or new vans), we apply the correct capital allowances so you get tax relief in the most efficient way.
CIS, VAT and compliance for contractors
- Handling income where CIS deductions have already been taken by contractors
- Setting off CIS suffered against PAYE and corporation tax where applicable
- Ensuring the correct VAT treatment on labour vs materials and reverse charge where required
- Making sure your director salary/dividends mix works alongside CIS income
We check your CIS statements and contractor deductions so that the company does not overpay tax and HMRC’s records reconcile with your accounts.
What we need from you to file accounts & CT600
To complete year-end accounts and your corporation tax return smoothly we ask you to provide:
- Business bank statements (and any credit card or finance accounts used for the company)
- Sales invoices and job sheets – including any certification work (EICRs, gas safety, etc.)
- Purchase invoices from merchants (plumbing and electrical wholesalers, builders’ merchants)
- Hire invoices for plant and equipment
- CIS deduction statements from any contractors you work for
- Details of any vehicle or tool finance – HP/lease agreements
- Payroll reports if we do not process payroll for you
Once these records are in, we reconcile your income and costs, calculate corporation tax, check CIS and VAT treatment and file everything with HMRC and Companies House on your behalf.