Interest on capital in Partnership Firm

https://carajput.com/learn/different-meaning-of-turnover-in-income-tax-act-companies-act-and-gst.H T M L

Yes. If it is business income, it forms part of turnover

as per section 28 of IT Act 1961 any interest, salary, bonus, commission , or any amount due to or received by a partnner from a firm is taxable under as your business income. hence includable in tax audit limit u/s 44AB