# Finance Calculator > Analyze your monthly cash flow, savings rate, and potential annual savings. Page: https://askcalculators.com/calculator/finance-calculator/ Definition: https://askcalculators.com/calculator/finance-calculator/definition.json JSON Schema: https://askcalculators.com/calculator/finance-calculator/schema.json Version: 7.0.0 Maintained by: AskCalculators (software project; not a credentialed reviewer) Qualified review: pending. Automated checks do not establish professional approval. Page status: Live Review status: Pending ## Use Open the calculator page and enter values. Query-string parameters can restore and bookmark a calculation. Example: https://askcalculators.com/calculator/finance-calculator/?cashFlow=5000&expenses=3000&taxRate=20 ## Inputs - cashFlow: Gross Monthly Income ($); type=number; optional; default=5000 - expenses: Monthly Expenses ($); type=number; optional; default=3000 - taxRate: Effective Tax Rate (%); type=number; optional; default=20 ## Outputs - result: Result; format=text; primary ## Formula Monthly tax = income × effective tax rate; net monthly cash flow = income − tax − expenses; annual savings = net monthly cash flow × 12. ## Rules - Empty optional inputs are undefined, not zero. - Hidden conditional inputs are ignored. - Do not invent missing required inputs.