AI Invoicing App Builder for HR Consultancies
An invoicing tool shaped like your HR consultancy: your services, your tax rate, your terms. Describe it once, then issue invoices from a page instead of a template file.
Who it's for
HR consultancies invoicing from a word processor or a spreadsheet, and chasing payment from memory.
What you can build
- Clients with billing details and payment terms
- Invoices with line items for employment contracts and disciplinary support, tax and totals
- A PDF you can download or email to the client
- A paid / unpaid / overdue list with what is due this week
- Quotes that turn into an invoice once accepted
How HR consultancies work
An HR consultancy acts as the outsourced people team for small and mid-sized businesses. Most income comes from monthly retainers covering a set number of hours, with extra fees for projects like handbooks, restructures and investigations. Work arrives as urgent calls about a disciplinary, a grievance or a new hire's contract. Employment rules vary widely by country and state, so consultants check the rules that apply where each client operates. Software logs hours, tracks cases and holds documents; it does not decide employment matters.
What invoicing app for HR Consultancies has to handle
- Monthly retainer invoices should show hours included and used.
- Overage hours or project work are billed on separate lines.
- Fixed-fee projects such as handbooks need staged invoices.
- Training days may be billed per delegate or per day.
A tip for HR consultancies
Invoice overage hours monthly rather than letting them accumulate. A small extra charge each month is easy to accept, while a large bill at renewal feels like a surprise and puts the relationship at risk.
A prompt to start from
Build an invoicing app for an HR consultancy. Keep a list of clients with client company, headcount and retainer tier. Create invoices with a number, date, due date, line items for employment contracts, disciplinary support and HR retainers, quantity, rate, tax and total. Generate a printable PDF, mark invoices paid or overdue, and show a dashboard of outstanding money. Add quotes that can be converted into an invoice, and store everything in a database.
Questions
Can retainer invoices show hours used?
Yes. The monthly invoice can pull the hours logged against the client and show included, used and extra hours.
Can it produce a PDF?
Yes. Ask for a printable invoice and Mythex builds a clean PDF layout with your details, logo and numbering, which you can download or attach to an email.
Does it handle tax?
Say which tax applies and at what rate and it is calculated per line and shown in the total. If you bill in more than one currency, say that too.
Do I need to know how to code?
No. You describe what you want in plain language and Mythex writes the code, shows a live preview, and lets you change things by chatting. The code editor and terminal are there if you ever want them.
Do I have to explain my business every time?
No. Mythex remembers who you are and how you work across every project, and follows the standing notes you set for a project, so you are not re-briefing it in each new chat. You can read, edit or switch all of it off.
How much does it cost?
There is a Free plan with daily credits, enough to build and publish a first version. Pro is $25/month and adds full code editing, GitHub export, custom domains, and credit top-ups.
Templates to start from
- Mortgage Calculator Template — Live amortization with PMI
- Finance Dashboard Template — Board-ready finance reporting
- Fintech Payments Site Template — Tiered pricing, blog, animations
- Plumbing Business Site Template — Quote calculator with lead dashboard
- Invoice Generator Template — Canvas invoicing with PDF export
- Expense Claims App Template — Receipt uploads with policy checks
- Sales ROI Calculator Template — Three-scenario models and branded PDFs
- Commission Calculator Template — Tiered comp plans and quota attainment
Guide
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