Consultant Invoice Template: Free Consulting Invoice Example & Format (PDF, Word, Excel)

Consulting invoice format: what to include

However you bill, every consulting invoice needs these:

Consulting invoice example (filled-in sample)

This is the example from the PDF above: a consultant in Boston billing a client for a monthly advisory retainer, a strategy workshop, extra hours and travel.

Payment terms used in the example: "Payment due within 30 days (Net 30). Bank transfer to Merrivale Consulting. Please include invoice number 2026-022 as the payment reference. Expenses are billed at cost with receipts available on request."

Consulting invoice templates by billing model

The format stays the same; what changes is how you write the lines.

Monthly retainer invoice

One line for the retainer with the month and what it covers (for example "Advisory retainer — June, up to 10 hours"), then extra hours beyond the retainer and expenses. Send it on the same day every month. The online editor lets you duplicate last month's invoice in one click and change the month.

Day-rate invoice

Common for on-site work and workshops. One line per day or per block of days, with the dates and what happened, for example "On-site process review, 3–5 June (3 days)".

Hourly consulting invoice

Group the hours by activity or by week, not one big total, for example "Market research and interviews — 8 hrs" and "Board presentation preparation — 4 hrs". Include preparation time and calls if your agreement says they are billable.

Project or fixed-fee invoice

Agree the phases in the proposal and invoice each one when it is delivered: "Phase 1 — discovery and audit", "Phase 2 — recommendations report", "Phase 3 — implementation support". A deposit before the first phase is common on larger projects.

Invoice templates for different kinds of consultants

• Marketing consultant: strategy or audit fee, campaign management by month, and ad spend passed through at cost on its own line.
• IT consultant: hours or days by system or project, licences passed through, and a support retainer after go-live.
• Engineering consultant: site visits, design or calculation work by phase, drawings and reports as deliverables, and travel.
• Financial consultant: fixed fees per service (a plan, a review, a model) or a monthly advisory retainer.
• Business or management consultant: retainer or project phases, workshops by day, and the final report as a deliverable.

Consulting line items worth charging for

Consultants often under-bill the work around the work. Add explicit lines for these:

• Preparation and research time — not just the meeting itself
• Reports and deliverables — written analysis, decks and documentation as their own lines
• Travel and expenses — at cost, or at an agreed rate
• Additional sessions or scope — beyond the agreed engagement
• Workshops and facilitation — priced per day, separately from advisory hours

How to show taxes on a consulting invoice

Add tax only if you are registered for it, and show it on its own line below the subtotal with the rate, for example "VAT 20%" or "GST 18%". If you are not registered, leave the tax line out completely.

• India: management consulting (SAC 998311) carries 18% GST, split into CGST 9% + SGST 9% for a client in your state, or IGST 18% for a client in another state. See the bill format below.
• UK and EU: charge VAT only if you are VAT-registered, and show your VAT number. Billing a business client in another country has its own rules, so check them before you invoice.
• US: whether consulting services are subject to sales tax depends on the state, so check your state's rules.

This is general information, not tax advice. Check with an accountant (or a CA in India) for your situation.

Consultancy bill format in India (with GST)

If you are registered for GST, your consultancy bill has to be a tax invoice with the details required by Rule 46 of the CGST Rules: your name, address and GSTIN; an invoice number of up to 16 characters that is unique within the financial year; the date; the client's name and address (and GSTIN if they are registered); the SAC code; the description and value of each service; the GST rate and amount; the place of supply; and your signature (not needed on an electronic invoice).

Here is an example for a consultant in Pune billing a client in Mumbai (the same state):

Above the table, the invoice shows the consultant's GSTIN, the invoice number and date, the client's details and "Place of supply: Maharashtra (27)". For a client in another state, replace the CGST and SGST lines with one line of IGST 18% (₹21,600 here).

• Not registered for GST? Registration is needed once your yearly turnover from services passes ₹20 lakh (₹10 lakh in some special category states). Below that, if you have not registered, issue a plain bill with no GST lines and no GSTIN.

In the online editor, set the currency to INR (₹), enter 18 as the tax rate, and write your GSTIN, the SAC code, the place of supply and the CGST/SGST split in the notes.

GST rates and rules are set by the GST Council and can change. Confirm the current rate and your SAC code with your CA before you invoice.

How to create a consulting invoice in 5 steps

Tracking consulting invoices

Once you have more than a few clients, the hard part is knowing which invoices are still unpaid. Give every invoice a status and look at the unpaid ones weekly. In Simple Invoice Generator each invoice is Draft, Unpaid, Paid or Overdue, invoices turn Overdue automatically when the due date passes, and the dashboard shows your unpaid total. With Pro, your client gets an automatic reminder 1, 7 and 14 days after the due date. If you prefer to write them yourself, here are payment reminder emails you can copy.

How to get paid faster as a consultant

• Invoice on a schedule — monthly or per phase, not only at the end
• Be specific — "Strategy workshop + written recommendations" beats "consulting services"
• Include the PO number — corporate accounts teams often can't pay without it
• Send promptly — invoice the same day you complete a phase or session

Free consulting invoice generator

Simple Invoice Generator is an online invoice generator that works well for consultants and advisory firms:

• Professional PDF with your logo
• Email invoices to clients straight from the app
• Track status — draft, unpaid, paid, overdue
• Saved clients with auto-fill, and one-click duplicate for monthly retainers
• 9 currencies including USD, EUR, GBP, INR, CHF, CAD and AUD
• Automatic payment reminders 1, 7 and 14 days after the due date (Pro)

The free plan includes 3 invoices with no credit card. Pro is $9 a month for unlimited invoices. If you're comparing tools, see what the cheapest invoicing software costs per year.

Frequently asked questions

Is there a free consulting invoice template in Word?
Yes. The Word template on this page (.docx) opens in Microsoft Word, Google Docs, Pages and LibreOffice. Replace the text in brackets with your own details. There is also a blank PDF, a filled-in PDF example, an Excel spreadsheet that calculates the totals, and an online editor that makes the PDF for you without sign-up.

How do I invoice for consulting work?
Put your name or firm and the client's details at the top, then a unique invoice number, the issue date, the due date and the engagement or billing period. List the work on separate lines (retainer, days, hours, workshops, deliverables), add reimbursable expenses at cost, show any tax separately, and finish with the total due and how to pay it.

What is the format of a consultancy bill in India?
A GST-registered consultant issues a tax invoice showing their GSTIN, a serial number of up to 16 characters, the date, the client's name and address (and GSTIN if registered), the SAC code (998311 for management consulting), a description of each service, the taxable value, CGST and SGST (or IGST for a client in another state) at 18% in total, the place of supply and a signature. A consultant who is not registered issues a plain bill without any GST.

Should consultants bill expenses on the invoice?
Yes, if the agreement says the client reimburses them. Put travel, accommodation and other costs on their own line marked "reimbursable, at cost", and keep the receipts so you can send them if the client asks.

How do I keep track of consulting invoices?
Give each invoice a status (Draft, Unpaid, Paid or Overdue) and check the unpaid ones every week. Simple Invoice Generator does this for you: invoices turn Overdue automatically after the due date, and Pro emails your client a reminder 1, 7 and 14 days late.