Compensation budgeting for an organization depends on various components of the salary of employees. SAP SuccessFactors budgeting is a very robust tool that provides various standard options to perform bottom-up budgeting for compensation planning (both for salary and Bonus). Apart from providing options to basing the budget on standard fields in the compensation form, SAP Successfactors provides significant agility that allows organizations to perform calculations (allocated and used) based on custom fields.
The blog post link below discusses in detail the budgeting options available in SAP SuccessFactors. The blog specifically highlights budgeting based on custom columns released in 1203 and is applicable across subsequent releases. In addition the blog covers standard budgeting options that are available and salary budgets based on the custom fields with appropriate illustrations.
https://blogs.sap.com/2013/09/12/successfactors-salary-budgeting-based-on-the-custom-fields/
Raj Jogam Lead Consultant SAP-HCM, YASH Technologies Inc.