India's current account deficit reached an all-time high in 2013.[298] India has historically funded its current account deficit through borrowings by companies in the overseas markets or remittances by non-resident Indians and portfolio inflows. From April 2016 to January 2017, RBI data showed that, for the first time since 1991, India was funding its deficit through foreign direct investment inflows. The Economic Times noted that the development was "a sign of rising confidence among long-term investors in Prime Minister Narendra Modi's ability to strengthen the country's economic foundation for sustained growth".[299]
India liberalised its FDI policy in 2005, allowing up to a 100% FDI stake in ventures. Industrial policy reforms have substantially reduced industrial licensing requirements, removed restrictions on expansion and facilitated easy access to foreign technology and investment. The upward growth curve of the real-estate sector owes some credit to a booming economy and liberalised FDI regime. In March 2005, the government amended the rules to allow 100% FDI in the construction sector, including built-up infrastructure and construction development projects comprising housing, commercial premises, hospitals, educational institutions, recreational facilities, and city- and regional-level infrastructure.[304] Between 2012 and 2014, India extended these reforms to defence, telecom, oil, retail, aviation, and other sectors.[305][306]

For a person working for a wage, their source of income is their job, or their labor (aka their time that they sell to someone). But you can own a house, and rent it out, and when your renters pay you renter every month, the source of that income check is your rental property, or your house. It would just be called rental income. If you have money in the bank in an account that pays interest, those interest payments are another source of income. We can say the source is interest payments, or we can identify the asset that is generating rent, and say your money in the bank that is generating “rent” (aka interest) is your source of income.