Profit after tax (PAT), which excluded the fair value gain related to the health insurance business, grew 33 per cent year on year to Rs 2,057 crore during 2022-23 (FY23). The company had 38 million customers as of March 31, 2023, the company's statement released on Thursday evening said. Net interest margin (NIM) rose 6.88 per cent in the fourth quarter of fiscal 2022-23 (Q4 FY23) in non-banking finance company (NBFC) business. Aditya Birla Capital said in the statement, "The branch expansion is targeted at driving penetration into Tier III and Tier IV towns and new customer segments." This growth across businesses led to a 40 per cent year-on-year growth in the overall lending book (NBFC and HFC) to Rs 94,364 crore as on March 31, 2023, and a 28 per cent jump in the gross premium (Life and Health Insurance) to Rs 17,787 crore in FY23. The shares of the company were trading 1.13 per cent up at Rs 165.80 apiece on Friday morning.