# Financing

- [Mortgage Calculation API](/english/financing/mortgage-calculation-api.md): The Mortgage Calculation API performs real-time, data-driven mortgage calculations for the Dutch housing market.
- [Authentication, input and response](/english/financing/mortgage-calculation-api/authentication-input-and-response.md)
- [API Key Information](/english/financing/mortgage-calculation-api/api-key-information.md): Understanding and Obtaining Your API Key
- [Output interpretation](/english/financing/mortgage-calculation-api/output-interpretation.md): An explanation and interpretation of every feature outputted in the API response.
- [Rental Reference API](/english/financing/rental-reference-api.md): The interactive rental reference API gives the appraiser full flexibility on finding rental reference objects based on multiple variables.
- [Changelog](/english/financing/rental-reference-api/changelog.md)
- [Authentication, input and response](/english/financing/rental-reference-api/authentication-input-and-response.md)
- [API Key Information](/english/financing/rental-reference-api/api-key-information.md): Understanding and Obtaining Your API Key
- [Output interpretation](/english/financing/rental-reference-api/output-interpretation.md): An explanation and interpretation of every feature outputted in the API response.
- [WWS Points API](/english/financing/wws-points-api.md): For retrieving the wws points of a property, usefull for the rental price of it.
- [API Key Information](/english/financing/wws-points-api/api-key-information.md): Understanding and Obtaining Your API Key
- [Authentication, input and response](/english/financing/wws-points-api/authentication-input-and-response.md)
- [Specifications for independent home version 01-01-2026](/english/financing/wws-points-api/specifications-for-independent-home-version-01-01-2026.md): The following information describes the inputs required for each rule in the WWS calculation according to the 01-01-2026 rules. This ensures correct and consistent data entry into the API for accurate
- [Specifications for non independent home version 01-01-2026](/english/financing/wws-points-api/specifications-for-non-independent-home-version-01-01-2026.md): The following information describes the inputs required for each rule in the WWS calculation according to the 01-01-2026 rules. This ensures correct and consistent data entry into the API for accurate
- [Specifications for independent home version 01-01-2025](/english/financing/wws-points-api/specifications-for-independent-home-version-01-01-2025.md): The following information describes the inputs required for each rule in the WWS calculation according to the 01-01-2025 rules. This ensures correct and consistent data entry into the API for accurate
- [Specifications for non-independent home version 01-01-2025](/english/financing/wws-points-api/specifications-for-non-independent-home-version-01-01-2025.md)
- [Input explanation for version 01-01-2025](/english/financing/wws-points-api/input-explanation-for-version-01-01-2025.md): This page is about the input features for the endpoints that are for the version 01-07-2024. A full explanation of the features is covered, and also the structure of the input and the blocks in it.
- [Specifications for independent home version 01-07-2024](/english/financing/wws-points-api/specifications-for-independent-home-version-01-07-2024.md): The information need for the rules that are used to calculate the points based on the version 01-07-2024. This information is crucial for the correct definition of the inputs by the user.
- [Specifications for non-independent home version 01-07-2024](/english/financing/wws-points-api/specifications-for-non-independent-home-version-01-07-2024.md): The information need for the rules that are used to calculate the points based on the version 01-07-2024. This information is crucial for the correct definition of the inputs by the user.
- [Input explanation for version 01-07-2024](/english/financing/wws-points-api/input-explanation-for-version-01-07-2024.md): This page is about the input features for the endpoints that are for the version 01-07-2024. A full explanation of the features is covered, and also the structure of the input and the blocks in it.
- [Specifications for independent home version 01-01-2024](/english/financing/wws-points-api/specifications-for-independent-home-version-01-01-2024.md): The information need for each rule that is used to calculate the points based on the rules of the version 01-01-2024. This information is crucial for the correct definition of the inputs by the user.
- [Specifications for non-independent home version 01-01-2024](/english/financing/wws-points-api/specifications-for-non-independent-home-version-01-01-2024.md): The information need for each rule that is used to calculate the points based on the rules of the version 01-01-2024. This information is crucial for the correct definition of the inputs by the user.
- [Output interpretation](/english/financing/wws-points-api/output-interpretation.md): An explanation and interpretation of every feature outputted in the API response.