The correct answer is neither altered then existing tax slabs nor altered the rates of personal income tax. Explanation & Key Takeaways: • The Budget for 2013-14 followed the policy of revenue augmentation and expenditure rationalization to contain government spending within sustainable limits. • Tax to GDP ratio was estimated at 10.2 per cent in RE 2013-14 , at the same level as in 2012-13. • The envisaged growth for tax revenue was 11.8 per cent over 2012-13. • Total expenditure was estimated to increase by 12.8 per cent in RE 2013-14 over 2012-13. Consequently, FD was projected to reduce to 4.6 per cent of GDP. NOTE • The ratio of central taxes -to-GDP slid further in FY20 to a 10-year low of 9.88 per cent, driven by a decline in collections from customs duties and corporation tax, while excise duty posted marginal growth. • This was despite the fact that only a week was under lockdown in the year. • The ratio stood at 10.97 per cent in FY19, and at 11.22 per cent in FY18. Tax Revenue in India's budget for 2013-14 - • According to the Revenue Account – Receipts, released with Budget 2013-14, the Tax Revenues are as follows. • +---------------+----------------------------------+ | Tax | Crore rupees in Budget 2013-2014 | +---------------+----------------------------------+ | Corporate tax | 419520.00 | | Income tax | 247639.00 | | Service tax | 180141.00 | | Excise duties | 197553.95 | +---------------+----------------------------------+ • As per the given data the corporate tax has the largest source of Tax Revenue.