Billy API

Spec sheet

Intended users

Billy describes its accounting software as helping self-employed people manage bookkeeping, invoices, and VAT.Read 5 Oct 2026 · billy.dk

Integrations

Billy’s integration directory includes connections for services such as Shopify, WooCommerce, Salary, MobilePay, and Lunar.Read 5 Oct 2026 · billy.dk

Security

Billy says it uses SSL, encrypts information, and backs up data several times a day.Read 4 Oct 2026 · billy.dk

Compliance

Billy says it is certified and approved by the Danish Business Authority for digital bookkeeping.Read 4 Oct 2026 · billy.dk

Support

Billy advertises support every day from 07 to 22, with email, chat, and phone support listed on its pricing page.Read 5 Oct 2026 · billy.dk

Headquarters

Copenhagen, DenmarkRead 28 Sep 2026 · billy.dk

API access

The API endpoint is https://api.billysbilling.com/v2, and all requests must use SSL.Read 4 Oct 2026 · billy.dk

API capabilities

The API supports getting, listing, creating, updating, and deleting resources such as invoices.Read 5 Oct 2026 · billy.dk

API contact

The API page directs questions and feedback to [email protected].Read 4 Oct 2026 · billy.dk

API format

Billy API v2 is a JSON-based REST API, and Billy's web app uses the same API.Read 4 Oct 2026 · billy.dk

API key creation

Users can create as many API keys as they want to connect Billy with other software, such as a webshop or cash register.Read 5 Oct 2026 · billy.dk

API languages

The API documentation includes code examples for PHP, Node.js 8+, and Python 3.Read 4 Oct 2026 · billy.dk

API operations

The API supports getting, listing, creating, updating, and deleting resources, including invoices.Read 4 Oct 2026 · billy.dk

API paging

List results can be paged, and pageSize cannot exceed 1,000.Read 4 Oct 2026 · billy.dk

Authentication

The documentation describes company access tokens and HTTP Basic Auth; access tokens are permanent and do not expire.Read 5 Oct 2026 · billy.dk

Backup and storage

Billy says it stores accounting data online and backs it up every day.Read 5 Oct 2026 · billy.dk

Company status

Billy's API page says Billy is now part of Shine.Read 4 Oct 2026 · billy.dk

Endpoint and transport

The API endpoint is https://api.billysbilling.com/v2, and all requests must use SSL.Read 5 Oct 2026 · billy.dk

Free plan limit

The pricing page lists a limit of 3 invoices and 10 expense receipts for Free, while Basic and higher plans have no usage limits.Read 5 Oct 2026 · billy.dk

Other accounting features

Billy says users can upload receipts from mobile or computer or forward them by email, and that it automatically reads relevant data from uploaded receipts.Read 5 Oct 2026 · billy.dk

Product purpose

Billy describes its online accounting product as serving self-employed people and providing accounting, bookkeeping, and invoicing functions.Read 4 Oct 2026 · billy.dk

Shopify workflow

Billy’s Shopify integration can transfer webshop orders into Billy as invoice drafts, and the setup guide directs users to purchase the integration through IEX.Read 5 Oct 2026 · billy.dk

What it is

Billy API v2 is a JSON-based REST API, and Billy’s web app uses the same API.Read 5 Oct 2026 · billy.dk

Plans and prices

Every Billy API plan and price →

Where Specifiction places it

• Accounting APIs#2 of 279.0