# RetroTax Documentation > Documentation for RetroTax ## Guides - [Documentation](https://developer.retrotax-aci.com/docs.md): RetroTax documentation ## API Reference - [get](https://developer.retrotax-aci.com/reference/get_application-statuses.md) - [options](https://developer.retrotax-aci.com/reference/options_application-statuses.md) - [get](https://developer.retrotax-aci.com/reference/get_application-statuses-status-code.md) - [options](https://developer.retrotax-aci.com/reference/options_application-statuses-status-code.md) - [post](https://developer.retrotax-aci.com/reference/post_authentication.md) - [delete](https://developer.retrotax-aci.com/reference/delete_authentication.md) - [options](https://developer.retrotax-aci.com/reference/options_authentication.md) - [get](https://developer.retrotax-aci.com/reference/get_authentication-user-details.md) - [options](https://developer.retrotax-aci.com/reference/options_authentication-user-details.md) - [get](https://developer.retrotax-aci.com/reference/get_branches.md) - [options](https://developer.retrotax-aci.com/reference/options_branches.md) - [post](https://developer.retrotax-aci.com/reference/post_clients-upload.md) - [options](https://developer.retrotax-aci.com/reference/options_clients-upload.md) - [put](https://developer.retrotax-aci.com/reference/put_clients-client-id.md) - [options](https://developer.retrotax-aci.com/reference/options_clients-client-id.md) - [get](https://developer.retrotax-aci.com/reference/get_clients-client-id-companies.md) - [options](https://developer.retrotax-aci.com/reference/options_clients-client-id-companies.md) - [get](https://developer.retrotax-aci.com/reference/get_companies.md) - [post](https://developer.retrotax-aci.com/reference/post_companies.md) - [options](https://developer.retrotax-aci.com/reference/options_companies.md) - [get](https://developer.retrotax-aci.com/reference/get_companies-company-id.md) - [put](https://developer.retrotax-aci.com/reference/put_companies-company-id.md) - [options](https://developer.retrotax-aci.com/reference/options_companies-company-id.md) - [get](https://developer.retrotax-aci.com/reference/get_companies-company-id-locations.md) - [post](https://developer.retrotax-aci.com/reference/post_companies-company-id-locations.md) - [options](https://developer.retrotax-aci.com/reference/options_companies-company-id-locations.md) - [get](https://developer.retrotax-aci.com/reference/get_companies-company-id-locations-location-id.md) - [put](https://developer.retrotax-aci.com/reference/put_companies-company-id-locations-location-id.md) - [options](https://developer.retrotax-aci.com/reference/options_companies-company-id-locations-location-id.md) - [get](https://developer.retrotax-aci.com/reference/get_employees.md) - [post](https://developer.retrotax-aci.com/reference/post_employees.md) - [options](https://developer.retrotax-aci.com/reference/options_employees.md) - [get](https://developer.retrotax-aci.com/reference/get_employees-documents.md) - [options](https://developer.retrotax-aci.com/reference/options_employees-documents.md) - [get](https://developer.retrotax-aci.com/reference/get_employees-download.md) - [options](https://developer.retrotax-aci.com/reference/options_employees-download.md) - [get](https://developer.retrotax-aci.com/reference/get_employees-geo-qualify.md) - [options](https://developer.retrotax-aci.com/reference/options_employees-geo-qualify.md) - [get](https://developer.retrotax-aci.com/reference/get_employees-employee-id.md) - [put](https://developer.retrotax-aci.com/reference/put_employees-employee-id.md) - [options](https://developer.retrotax-aci.com/reference/options_employees-employee-id.md) - [get](https://developer.retrotax-aci.com/reference/get_employees-employee-id-documents.md) - [post](https://developer.retrotax-aci.com/reference/post_employees-employee-id-documents.md) - [options](https://developer.retrotax-aci.com/reference/options_employees-employee-id-documents.md) - [put](https://developer.retrotax-aci.com/reference/put_employees-employee-id-esign.md) - [options](https://developer.retrotax-aci.com/reference/options_employees-employee-id-esign.md) - [get](https://developer.retrotax-aci.com/reference/get_employees-employee-id-notes.md) - [post](https://developer.retrotax-aci.com/reference/post_employees-employee-id-notes.md) - [options](https://developer.retrotax-aci.com/reference/options_employees-employee-id-notes.md) - [get](https://developer.retrotax-aci.com/reference/get_employees-employee-id-pay-entries.md) - [post](https://developer.retrotax-aci.com/reference/post_employees-employee-id-pay-entries.md) - [options](https://developer.retrotax-aci.com/reference/options_employees-employee-id-pay-entries.md) - [put](https://developer.retrotax-aci.com/reference/put_employees-employee-id-pay-entries-pay-entry-id.md) - [delete](https://developer.retrotax-aci.com/reference/delete_employees-employee-id-pay-entries-pay-entry-id.md) - [options](https://developer.retrotax-aci.com/reference/options_employees-employee-id-pay-entries-pay-entry-id.md) - [get](https://developer.retrotax-aci.com/reference/get_occupations.md) - [options](https://developer.retrotax-aci.com/reference/options_occupations.md) - [get](https://developer.retrotax-aci.com/reference/get_questionnaire.md) - [get](https://developer.retrotax-aci.com/reference/get_reports.md) - [options](https://developer.retrotax-aci.com/reference/options_reports.md) - [options](https://developer.retrotax-aci.com/reference/options_reports-asr.md) - [get](https://developer.retrotax-aci.com/reference/get_states.md) - [options](https://developer.retrotax-aci.com/reference/options_states.md) - [get](https://developer.retrotax-aci.com/reference/get_states-state-code-counties.md) - [options](https://developer.retrotax-aci.com/reference/options_states-state-code-counties.md) - [get](https://developer.retrotax-aci.com/reference/get_supplementary-program-statuses.md) - [options](https://developer.retrotax-aci.com/reference/options_supplementary-program-statuses.md) - [get](https://developer.retrotax-aci.com/reference/get_supplementary-program-statuses-status-code.md) - [options](https://developer.retrotax-aci.com/reference/options_supplementary-program-statuses-status-code.md) - [get](https://developer.retrotax-aci.com/reference/get_supplementary-programs.md) - [options](https://developer.retrotax-aci.com/reference/options_supplementary-programs.md) - [get](https://developer.retrotax-aci.com/reference/get_supplementary-programs-supplementary-program-code.md) - [options](https://developer.retrotax-aci.com/reference/options_supplementary-programs-supplementary-program-code.md) - [get](https://developer.retrotax-aci.com/reference/get_target-groups.md) - [options](https://developer.retrotax-aci.com/reference/options_target-groups.md) - [get](https://developer.retrotax-aci.com/reference/get_target-groups-target-group-code.md) - [options](https://developer.retrotax-aci.com/reference/options_target-groups-target-group-code.md) - [get](https://developer.retrotax-aci.com/reference/get_users.md) - [post](https://developer.retrotax-aci.com/reference/post_users.md) - [put](https://developer.retrotax-aci.com/reference/put_users.md) - [options](https://developer.retrotax-aci.com/reference/options_users.md) - [get](https://developer.retrotax-aci.com/reference/get_zone-statuses.md) - [options](https://developer.retrotax-aci.com/reference/options_zone-statuses.md) - [get](https://developer.retrotax-aci.com/reference/get_zone-statuses-status-code.md) - [options](https://developer.retrotax-aci.com/reference/options_zone-statuses-status-code.md) - [get](https://developer.retrotax-aci.com/reference/get_zones.md) - [options](https://developer.retrotax-aci.com/reference/options_zones.md) - [get](https://developer.retrotax-aci.com/reference/get_zones-zone-code.md) - [options](https://developer.retrotax-aci.com/reference/options_zones-zone-code.md) ## Pages - [User Accounts](https://developer.retrotax-aci.com/user-accounts.md) ## Changelog - [Welcome to RetroTax](https://developer.retrotax-aci.com/changelog/welcome-to-retrotax.md)