Advanced Tax Refund Estimator: The tool estimates refunds based on simplified progressive tax calculations for India’s new regime (FY 2024-25 slabs with 4% cess) or US federal brackets (2024 single filer rates). Note: This is for educational/estimation purposes only—consult a tax professional for accurate advice. Slabs are hardcoded to current rates; the Financial Year input is for reference and doesn’t dynamically adjust slabs.