Invoice template for professional services

Your hours, fixed fees and expenses on one clear invoice.

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Filled invoice workbook for Harbour Advisory with its own logo and teal brand colour, a balance-due panel, hourly work, a fixed fee, expenses and tax.

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  • Spreadsheet

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Before and after the invoice

Free worksheets to help with billable hours, retainer fees and payments.

How much detail belongs on a service invoice?

Clients need enough detail to recognise the work and understand the charge. The right level depends on your pricing agreement and their approval process.

Descriptions the client can recognise

October management reporting: preparation and review meeting is clearer than Professional services. Familiar service or project names help the person approving payment recognise the work, even if they weren't involved.

When to group or separate charges

Related work at the same hourly rate can share a line. Separate lines make different rates, projects or extra services easier to check. A fixed-fee package can usually appear as one deliverable and price, even when several people contributed.

Explore MinuteDock's billing features for ways to group tracked work by project, person or task.

When a separate time breakdown helps

When a client needs individual entries, an attached timesheet keeps the invoice concise. Fixed-fee invoices can usually focus on the agreed scope and price.

See our guide to what to include in a service invoice for the individual fields.

Hours, fixed fees and expenses together

A consultancy might bill for a forecast review, a monthly reporting package and a courier charge on the same invoice.

HourlyCash-flow forecast & scenario review
6.5 hours × $185.00$1,202.50
Fixed feeMonthly management reporting pack
1 × $950.00$950.00
ExpenseSecure document courier
1 × $48.00$48.00

Subtotal: NZD $2,200.50, before tax.

A monthly retainer line is clearest when it names the period, agreed service and fee. Any deposit already paid belongs in the payments applied, so the balance reflects what the client still owes.

If the work behind that monthly fee has changed, our retainer pricing guide and worksheet can help you compare the hours involved and consider a different fee or scope for the next period.

6.5 hours means six hours and thirty minutes. Try our minutes-to-decimal converter for help converting your hours and minutes.

Details that help clients approve and pay

An invoice may pass from your client contact to accounts payable. The right details help both recognise the work and arrange payment.

References for approval

A purchase order number links a charge to approved spending; a project or matter reference identifies the work. Your contact's name helps accounts payable find the approver.

Service dates

A period such as 1–31 October identifies a monthly fee; individual dates are more useful for visits or hourly work.

Supporting detail

Receipts support expenses, time breakdowns explain hourly charges, and milestone references connect fees to deliverables. These are useful when the client needs them for approval.

Explore MinuteDock's accounting integrations to turn tracked work into invoices in the software you already use.

The balance and how to pay

Separate discounts, deposits and payments received make the remaining balance clear. Payment details and a reference help the client settle it. Overseas clients may also need international bank details and an explicit currency.

Tax fields vary by location and registration status. The regional invoice guidance covers the requirements for New Zealand, Australia and the UK.

Frequently asked questions

When should I send an invoice for professional services?

On the agreed schedule: monthly for ongoing work, at a project milestone or on completion. Sending it promptly gives the client time to review it before payment is due.

What payment terms should I put on an invoice?

Use the agreed payment terms, such as payment within 14 days, and show the actual due date.

How should I show expenses on a client invoice?

Separate lines can show expenses charged at cost or with an agreed markup. Receipts can support charges that need approval. Costs already included in a fixed fee aren't additional charges.

Can one invoice cover several projects?

Yes, if the same client business pays for them. Project references help allocate costs; separate invoices can be easier when purchase orders, approvers or payment schedules differ.

Can I change the branding and payment details?

Yes. The workbook has space for your logo and editable business and payment details. Its balance-due panel can use your brand colour; the PDF uses a fixed colour.

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Practical guides to invoicing

What to Include on a Service Invoice, With an Example
How to invoice for hours worked with the right level of detail
How to Keep Track of Invoices and Payments