Consultant Invoice Template UK
Bill advisory work cleanly — day rate, retainer or milestone — with the engagement and purchase-order references corporate accounts teams need to approve your invoice. Live preview and a PDF download.
- Day rate, retainer or milestone
- Engagement and PO references
- Expenses shown separately
- One-click PDF download
1Your details
2Invoice details
3Client & payment
4Line items
| Service | Qty / days | Rate | Amount |
|---|
| Service | Qty / days | Rate | Amount |
|---|---|---|---|
| Add line items to see them here | |||
What a consultancy invoice needs
A consultancy invoice is judged by an accounts-payable team who never saw the work. Their job is to match your invoice to a purchase order, a statement of work or a budget line — and if they cannot, they cannot pay it. So the reference details matter as much as the figures.
Put the engagement letter, SOW, project code or PO number on the invoice. It is the single most effective way to stop a consultancy invoice sitting unmatched in a shared inbox.
Day rate, retainer or milestone
Match the invoice to how you agreed to bill:
- Day rate — show the number of days and the rate, so the days billed are easy to check against the engagement.
- Retainer — state the period covered (for example “September retainer”) so it is obvious which month you are billing for.
- Milestone or fixed fee — name the deliverable and the flat fee, and reference the milestone in the contract.
Separating time-based fees from fixed deliverables reads more professionally, and it means a query about one part of the engagement does not force you to reissue the whole invoice.
Expenses and disbursements
If you recharge travel or other costs, put them on their own lines rather than burying them in a fee. Be aware that travel you bought in order to deliver your own service is generally a recharge, not a true disbursement, and if you are VAT-registered it is usually taxable at the standard rate. True disbursements — costs you paid as the client's agent, such as a filing fee — are treated differently and should be shown separately. Check the treatment for your own engagement before you bill it.
VAT for consultants
For UK business clients, a VAT-registered consultant normally charges UK VAT, so tick the VAT box and add your number and rate. If you are not registered, do not charge VAT and leave the VAT number blank. Services to overseas business customers can fall outside the scope of UK VAT under the place-of-supply rules, with the customer accounting for the tax under the reverse charge — but keep evidence before you use that wording, and check the rules for your supply.
How this invoice tool works
Fill in your details
Your name, any trading name, your address, and the client company you are advising.
Itemise the engagement
List advisory days, workshops, reports and any agreed expenses on separate lines so the client can approve each part.
Download the PDF
Save a clean invoice in one click — no watermark — then email it to your client and keep a copy for your records.
Already sent it and still waiting?
Four ready-made follow-up emails, from a friendly nudge to a final notice.
More free invoice tools
Frequently asked questions
How should a consultant structure an invoice?
Separate time-based fees (day or hourly rates) from fixed deliverables, reference the engagement letter or proposal, and summarise the work covered by the billing period. Add a PO number if the client uses one.
Should I invoice expenses separately?
Put recharged expenses on their own lines rather than folding them into a fee. True disbursements paid as the client's agent are treated differently from recharges, so check which applies before you bill.
Do consultants charge VAT?
If you are VAT-registered and billing a UK business client, you normally charge UK VAT. If you are not registered, do not charge VAT. Cross-border services follow place-of-supply rules and may be outside the scope of UK VAT.
Why does a PO number matter on a consultancy invoice?
Corporate accounts teams match invoices to purchase orders. An invoice without the reference can sit unmatched and unpaid until someone chases it.
Do I need a limited company to invoice as a consultant?
No. You can invoice as a sole trader under your own name, or through a limited company if you have one.
General guidance only — this is not legal, tax or accounting advice. Last reviewed 22 September 2026.