Professional services

Invoices and Receipts for Consultants

Independent consultants and boutique advisory firms bill in a lot of shapes: day rates, fixed project fees, monthly retainers and passed-through expenses. Receipt Caker gives you a simple browser tool to itemize all of that on one professional invoice with a live preview. When a client pays, you generate a matching receipt the same way.

How do consultants create an invoice with Receipt Caker?: Receipt Caker is a free browser tool for building consulting invoices and receipts. You add line items such as advisory days, a fixed project fee or a monthly retainer, then list any billable expenses. Subtotal, tax and total calculate as you type in the live preview. Add your business details and payment instructions, then export a PNG free or a watermark-free PDF with your logo on Pro.

Documents consultants issue

Advisory day invoice

Bills a block of consulting days at your agreed rate, with the engagement and dates spelled out per line.

Retainer invoice

Charges a fixed monthly advisory retainer, often with a short summary of the period it covers.

Project fee invoice

Invoices a fixed-scope engagement in one line or split across agreed milestones.

Expense receipt

Confirms reimbursement of travel, subsistence or third-party costs passed through to the client.

Why consultants use Receipt Caker

Mix day rates, retainers and fixed fees on a single itemized invoice.
Tax and totals recalculate automatically as you edit line items.
Add your own logo and remove the watermark on the Pro plan.
No signup needed, and every document renders privately in your browser.
Export a shareable PNG for free or a print-ready PDF to email clients.

How the billing workflow works

1
List the engagement
Add lines for advisory days, project fees or the retainer period, plus any pass-through expenses.
2
Set rates and tax
Enter your rate per line and a tax rate; the subtotal and total update in the live preview.
3
Add your details
Fill in your business name, client, invoice number, dates and payment instructions.
4
Export and send
Download a PNG for free or a watermark-free PDF on Pro, then email it to the client yourself.

Billing that fits how consultants actually work

Consulting revenue rarely fits a single template. One month you invoice ten advisory days, the next a fixed diagnostic fee, and alongside both a standing retainer for an existing client. Receipt Caker lets you put whatever combination applies onto one document, with a separate line and description for each so the client sees exactly what they are paying for.

Because the preview updates as you type, you can see the finished invoice take shape before you export it. If a rate changes or you add an extra day, the subtotal and total adjust immediately, which removes the arithmetic errors that creep into hand-built documents.

Receipts that close the loop

A clear paper trail matters when you are a one-person firm or a small practice. Once a client settles an invoice, you can build a matching receipt that records the amount, the date and what it covered, giving both sides a clean record for their books.

You control the wording on every line, so a receipt for a retainer reads differently from one for reimbursed travel. That specificity helps when a client queries a payment months later.

Professional presentation without the overhead

First impressions count when you are selling expertise. A tidy, consistent invoice signals that you run an organised practice, which reinforces the advice you are being paid for.

On the Pro plan you add your own logo and export without the watermark, so the document carries your brand rather than ours. Everything is generated in the browser, so client figures never leave your machine during rendering.

Frequently asked questions

Can I put a retainer and project work on the same invoice?

Yes. Receipt Caker treats every charge as its own line item, so you can list a monthly retainer on one line and a fixed project fee or a block of advisory days on the next. Each line has its own description, quantity and rate, which keeps the client clear on what they are paying for. As you add or edit lines, the subtotal, tax and total recalculate automatically in the live preview. This is useful when an ongoing client also commissions a one-off piece of work in the same period, because it saves you sending two separate documents. When they pay, you can create a single receipt that mirrors the invoice. Remember the tool builds and exports the document only; you send it to the client yourself by email or however you prefer.

How do I handle reimbursable expenses on a consulting invoice?

Add the expenses as their own line items alongside your fees. For example, you might have one line for advisory days and separate lines for travel, accommodation or a third-party cost you paid on the client's behalf. You control the description and amount on each, so the client can see precisely what is being reimbursed rather than a lump sum. If your expenses are taxed differently from your fees, list them clearly so the breakdown is easy to follow. Receipt Caker totals everything for you as you type. When the invoice is paid, you can issue a receipt that records the reimbursement, which is handy for both your records and the client's. All of this happens in the browser, and you export the finished PNG or PDF to send yourself.

Do I need to create an account to use Receipt Caker?

No account is required to build an invoice or receipt. You open the tool, add your line items, business details and tax, and export the result. The free export produces a PNG image with a small watermark, which is fine for many everyday needs. If you want a watermark-free PDF with your own logo, you upgrade to the Pro plan. Because the rendering happens client-side in your browser, the figures you enter are not sent off to be processed elsewhere, which matters when consulting engagements are confidential. Receipt Caker is a document generator, so it does not chase payments, sync with accounting software or collect money online. It produces the professional invoice or receipt, and you handle sending and follow-up in your usual way.

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