Tata Consultancy Services (TCS) will report its March-quarter earnings after market hours on Friday and analysts expect a steady quarter from the country's largest software services provider. \tThe street is working with a dollar revenue growth of 2.2 percent in constant currency terms. In constant currency terms, it could be a growth of around 1.6 percent, growth will be driven by strong deal wins announced by the company in the last few quarters. \tMargins could be a bit subdued at 25.4 percent, according to a CNBC-TV18 poll which is below the company’s guidance of 26-28 percent impacted by the rupee appreciation, higher subcontracting cost. \tProfits could be down by about 1.5 percent due to lower margins and potentially lower forex gains. \tFor the FY19, the company is likely to end with double-digit gains, so it could be a growth of about 11 percent.