# DigiTax API Hub Documentation > DigiTax API Hub: Get tax compliant by integrating with our e-invoicing APIs. From this global page you can navigate to specific country API Hubs and get started on e-invoicing integration. Append .md to any documentation page URL to get its markdown version. ## Guides - [Invoice fiscalization](https://docs.digitax.tech/docs/invoice-fiscalization.md) - [Tax Authorities](https://docs.digitax.tech/docs/tax-authorities.md): A country's tax authority is in charge of the country's revenue. Some countries call this entity 'authority' while others call it 'service'. - [KRA](https://docs.digitax.tech/docs/kra.md): Kenya Revenue Authority - [ZRA](https://docs.digitax.tech/docs/zra.md): Zambia Revenue Authority - [NRS](https://docs.digitax.tech/docs/nrs.md): NRS was formerly FIRS (Federal Inland Revenue Service) up until end of 2025. - [Namiri Technology](https://docs.digitax.tech/docs/namiri-technology.md) - [eTIMS](https://docs.digitax.tech/docs/etims.md): electronic TIMS - [TIMS](https://docs.digitax.tech/docs/tims.md): Tax Invoice Management System - [ETR](https://docs.digitax.tech/docs/etr.md): Electronic Tax Register - [Smart Invoice system](https://docs.digitax.tech/docs/smart-invoice-system.md) - [Invoice](https://docs.digitax.tech/docs/invoice.md): Also called a sale - [Credit Note](https://docs.digitax.tech/docs/credit-note.md) - [Debit note](https://docs.digitax.tech/docs/debit-note.md) - [FTA](https://docs.digitax.tech/docs/fta.md): Federal Tax Authority - [Upsert](https://docs.digitax.tech/docs/upsert.md): Update or Insert - [Peppol](https://docs.digitax.tech/docs/peppol.md): Pan-European Public Procurement On-Line - [Webhook](https://docs.digitax.tech/docs/webhook.md): Sometimes called a 'callback URL' or 'Reverse API' - [Changelog](https://docs.digitax.tech/docs/changelog.md): A list of changes published for reference often in reverse-chronological order. ## Pages - [DigiTax Privacy Policy](https://docs.digitax.tech/page/privacy.md) - [DigiTax Terms and Conditions](https://docs.digitax.tech/page/terms.md) ## Changelog - [DigiTax API Hub refresh and new country-specific API Hubs](https://docs.digitax.tech/changelog/digitax-api-hub-refresh-and-new-country-specific-api-hubs.md) - [DigiTax Kenya API Version 2 Release](https://docs.digitax.tech/changelog/digitax-kenya-api-version-2-release.md) - [Released Changelog, Navigation improvements](https://docs.digitax.tech/changelog/changelog-released-navigation-updates.md) - [DigiTax Kenya API | remove endpoint 'branches/insurance'](https://docs.digitax.tech/changelog/remove-endpoint-branches-insurance.md) - [General copy edits and updates](https://docs.digitax.tech/changelog/general-copy-edits-and-updates.md) - [Updated Privacy Policy and, Terms and Conditions](https://docs.digitax.tech/changelog/updated-privacy-policy-and-terms-and-conditions.md) - [Welcome to DigiTax API Hub](https://docs.digitax.tech/changelog/welcome-to-digitax-api-hub.md)