---
title: "Concepts"
description: "The objects Two Minute Billing bills with: organizations, businesses, customers, subscriptions, invoices, payments, credits, tax, entitlements and analytics."
canonical_url: "https://twominutebilling.com/help/developers/concepts"
---
# Concepts

> The objects Two Minute Billing bills with: organizations, businesses, customers, subscriptions, invoices, payments, credits, tax, entitlements and analytics.

Read these in order the first time. Each one assumes the one before it.

- [Account hierarchy](https://twominutebilling.com/help/developers/concepts/account-hierarchy) — Organization → Business → Customer →
Subscription, and what each level owns.
- [Catalog](https://twominutebilling.com/help/developers/concepts/catalog) — products, prices and the eight pricing models.
- [Customers](https://twominutebilling.com/help/developers/concepts/customers) · [Subscriptions](https://twominutebilling.com/help/developers/concepts/subscriptions) — the payer, and
what they are billed for.
- [Invoices](https://twominutebilling.com/help/developers/concepts/invoices) · [Payments and gateways](https://twominutebilling.com/help/developers/concepts/payments) — how a bill is
assembled, and how it is collected.
- [Credits and the ledger](https://twominutebilling.com/help/developers/concepts/credits) · [Tax](https://twominutebilling.com/help/developers/concepts/tax) — where the money actually
lives, and what is owed on it.
- [Entitlements](https://twominutebilling.com/help/developers/concepts/entitlements) — turning what was bought into what the application
allows.
- [Analytics](https://twominutebilling.com/help/developers/concepts/analytics) — one endpoint for every number on a board, and what each
number means.


## Sitemap

See the full [sitemap](https://twominutebilling.com/sitemap.md) for all pages.