Invoice Template for IT Consultants
IT consultants — whether you're fixing networks, advising on cloud migrations or building bespoke systems — need invoices that clearly document time, deliverables and expenses. Our free template is built for UK-based IT professionals and contractors.
Create Your Invoice NowWhat to Include in Your IT Consultant Invoice
- Your business name (or limited company name) and contact details
- Client name, company and address
- Invoice number and date
- Project name or support ticket references
- Description of work (consultancy, implementation, support, training)
- Hours worked with dates and daily or hourly rate
- Software licences, hardware or subscriptions procured on behalf of the client
- Travel and expenses if applicable
- Total amount, VAT if registered, and payment terms
IT Consultant Invoicing Tips
- 1If you operate through a limited company (common for IT contractors), invoice from the company and include your company registration number.
- 2Be aware of IR35 rules — if HMRC determines you're inside IR35, the client (or your company) must deduct tax at source. Your invoice should reflect the agreed arrangement.
- 3For ongoing support contracts, invoice monthly with a clear breakdown of hours used vs. hours included in the retainer.
- 4Log all time meticulously with descriptions — IT clients often have internal approval processes and need to justify spend.
- 5Separate consultancy fees from pass-through costs (licences, hardware) on the invoice for clarity.
Frequently Asked Questions
How much do IT consultants charge per day in the UK?
UK IT consultant day rates vary widely: £300–£500 for general support, £500–£800 for mid-level consultancy (cloud, security, networking), and £800–£1,500+ for specialist or senior contractors (enterprise architecture, cybersecurity, SAP). London rates are typically 10–20% higher.
What is IR35 and how does it affect IT contractor invoices?
IR35 is UK tax legislation that determines whether a contractor is genuinely self-employed or effectively an employee. If you're inside IR35, tax and NI are deducted at source. Your invoice and working arrangements should clearly reflect your IR35 status.
Should IT consultants operate through a limited company?
Many IT contractors use a limited company (Ltd) for tax efficiency and to satisfy client requirements. Your invoice should be issued from the company, include the company registration number, and show VAT if registered. Some clients only work with Ltd companies.
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