Billy API vs Holded API
Billy API
billy.dkHolded API
holded.comSide by side
| Figure | Billy API | Holded API |
|---|---|---|
| Price from | 160 DKK/mo | $15/mo |
| Free plan | Yes | — |
| Free trial | Yes | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| iOS | — | Yes |
| Android | — | Yes |
| API | Yes | Yes |
| Plans published | 4 | 10 |
| Spec score · Accounting APIs | 9.0 (#2) | 8.3 (#8) |
| API format | Billy API v2 is a JSON-based REST API, and Billy's web app uses the same API. | The API is a REST/JSON API using Bearer authentication and cursor pagination, and the documentation lists 356 endpoints. |
| Authentication | The documentation describes company access tokens and HTTP Basic Auth; access tokens are permanent and do not expire. | API keys are sent as Bearer tokens, can have scoped permissions, and must be used over HTTPS. |
| Compliance | Billy says it is certified and approved by the Danish Business Authority for digital bookkeeping. | Holded's homepage lists Verifactu, SII, e-invoicing, AEAT, SAT, AFIP, and GDPR among its built-in compliance capabilities. |
| Headquarters | Copenhagen, Denmark | Barcelona, Spain |
| Integrations | Billy’s integration directory includes connections for services such as Shopify, WooCommerce, Salary, MobilePay, and Lunar. | Holded lists integrations including Shopify, WooCommerce, PrestaShop, Stripe, PayPal, Google Drive, Zapier, and Make. |
| Intended users | Billy describes its accounting software as helping self-employed people manage bookkeeping, invoices, and VAT. | Holded describes its cloud ERP as intended to help small businesses and reports that 900,000 SMBs use it. |
| Support | Billy advertises support every day from 07 to 22, with email, chat, and phone support listed on its pricing page. | All plans include the help center, webinars, and tutorials, while Advanced and Premium include priority phone and email support. |
Plans
Billy API
- FreeFree
- Basic160 DKK a month
- Plus295 DKK a month
- Complete595 DKK a month
Holded API
- Plus€15 a month
- Basic€29 a month
- Standard€59 a month
- Advanced€99 a month
- Premium€199 a month
- Plus$15 a month
- Basic$29 a month
- Standard$59 a month
- Advanced$99 a month
- Premium$199 a month
In their own words
Holded API
Holded API lets businesses manage invoices, contacts, products, and other business data programmatically. The REST/JSON API uses Bearer authentication and cursor pagination, and its documentation lists 356 endpoints across accounting, treasury, sales, inventory, contacts, CRM, projects, team and HR, calendar, inbox, and webhooks. API keys can have scoped permissions and must be sent over HTTPS. Webhooks deliver signed HTTP POST notices for events such as invoice creation and payment receipt, with retries after unsuccessful delivery. Monthly API quotas range from 500 calls on Plus to 100,000 or more on Premium; Premium overage is billed automatically. Holded lists integrations with Shopify, WooCommerce, PrestaShop, Stripe, PayPal, Google Drive, Zapier, and Make. The wider cloud business platform combines invoicing, accounting, CRM, projects, HR, inventory, and banking. Plus costs €15 a month, excluding VAT, and a 14-day trial is available. Holded is based in Barcelona, Spain, and was founded in 2016.