Consultant Invoice Template (UK)
Invoice template for UK-based consultants covering VAT registration, HMRC requirements, and standard payment terms.
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When to Use This Template
This template is designed for consultants operating in the United Kingdom, whether you are a sole trader, a partner in a firm, or running a limited company. UK consulting spans a wide range of fields from management and IT to HR and financial advisory, and all of them require proper invoicing that meets HMRC standards.
If you are VAT-registered, your invoices must be full VAT invoices that include specific fields mandated by HMRC. This means showing your VAT registration number, the VAT rate applied, and the VAT amount separately from the net total. Even if you are below the VAT threshold and not registered, you still need structured invoices for your Self Assessment tax return, and your invoices must not show any VAT amount.
The UK also has specific rules around the date of supply (tax point), which determines when VAT becomes due. For most consulting services, the tax point is the earlier of the date you issue the invoice or the date you receive payment. Getting this right matters for your VAT return filing, especially if you operate on the cash accounting scheme.
Key Fields to Include
- Your business name and address (registered office for limited companies)
- Company registration number (limited companies only)
- VAT registration number (if VAT-registered)
- Client’s name and address
- Unique sequential invoice number
- Invoice date and date of supply (tax point)
- Description of consulting services provided
- Number of days or hours worked, with rate
- Net amount, VAT amount, and gross total in GBP
- Payment terms (typically Net 30 in the UK)
- Bank details for BACS payment
Tips
- Under the Late Payment of Commercial Debts Act, you can charge statutory interest of 8% plus the Bank of England base rate on overdue B2B invoices, plus a fixed compensation fee.
- If you use the Flat Rate VAT scheme, do not show VAT separately on your invoices. Instead, show the VAT-inclusive total.
- Keep all invoices for at least six years to meet HMRC record-keeping requirements.
- For IR35-affected contracts, discuss with your accountant how to handle invoicing through your limited company, as PAYE may apply.
- Always reference a project name or purchase order number to speed up client-side approvals.
Frequently Asked Questions
Do I need to register for VAT as a UK consultant?
You must register for VAT if your taxable turnover exceeds GBP 90,000 in a 12-month period. Below that threshold, registration is voluntary but can be beneficial if your clients are VAT-registered businesses who can reclaim the VAT.
What is the difference between invoicing as a sole trader vs. a limited company?
A sole trader invoices under their personal name with their UTR number. A limited company invoices under the company name with its registered company number and registered office address. Limited companies also include their VAT number if registered.
Can I invoice in a foreign currency to UK clients?
Yes, but you must also show the GBP equivalent for VAT purposes. Use the HMRC exchange rate for the date of supply. Keep records of the rates used.