A dedicated tax calculator to check Old Tax Regime vis-à-vis New Tax Regime for Individual/HUF/AOP/BOI/Artificial Juridical Person(AJP) as per Section 115BAC can now be accessed on the IT Department website.
Please check the link below:
https://incometaxindia.gov.in/Pages/tools/115bac-tax-calculator-finance-bill-2023.aspx