# I Hate Invoicing

> I Hate Invoicing is an invoice tool for freelancers and independent professionals.
> Describe the work in plain language, review the draft, and send an invoice with a
> PDF and payment link. Free account; you pay 5.9% + $0.59 only when a client pays
> through Stripe. It also runs a public MCP server, so Claude, ChatGPT, and other
> assistants can create, send, and track invoices directly.

Canonical site: https://www.ihateinvoicing.io/

## Guides

- [What is MCP invoicing?](https://www.ihateinvoicing.io/guides/mcp-invoicing): How the Model Context Protocol lets an AI assistant send real invoices, and why it changes freelance billing.
- [How to invoice a client from Claude](https://www.ihateinvoicing.io/guides/invoice-from-claude): Connect the MCP server to Claude and send an invoice from chat.
- [How to invoice a client from ChatGPT](https://www.ihateinvoicing.io/guides/invoice-from-chatgpt): Connect the MCP server to ChatGPT and send an invoice from chat.
- [All guides](https://www.ihateinvoicing.io/guides)

## Free tools

- [1099 tax set-aside calculator](https://www.ihateinvoicing.io/tools/tax-set-aside): No-login estimator for the quarterly tax set-aside on 1099 income.

## Profession pages

- [Invoicing for interpreters](https://www.ihateinvoicing.io/interpreters)
- [Invoicing for designers](https://www.ihateinvoicing.io/invoicing-for-designers)
- [Invoicing for developers](https://www.ihateinvoicing.io/invoicing-for-developers)
- [Invoicing for photographers](https://www.ihateinvoicing.io/invoicing-for-photographers)

## MCP server

I Hate Invoicing runs a public MCP server at https://www.ihateinvoicing.io/api/mcp (streamable HTTP, OAuth, 16 tools). Assistants can create, send, and track invoices, manage clients and per-agency billing rules, and pull aging and 1099 summaries. Free accounts at https://www.ihateinvoicing.io.

## Company

- [Pricing](https://www.ihateinvoicing.io/pricing)
- [About](https://www.ihateinvoicing.io/about)
- [Referral program terms](https://www.ihateinvoicing.io/referral-program)
- [Terms of service](https://www.ihateinvoicing.io/terms-of-service)
- [Privacy](https://www.ihateinvoicing.io/privacy)