Surcharge is the amount, which is charged over & above the 
actual charged amount.

Surcharges are often a charge in addition to a charge, or a 
tax added to the original tax.

surcharge is charged if the tax payable amount is more 
than  ten lakhs after deducting all deductions

Surcharge is charged when the taxable income crosses
Rs.10,00,000/- after taking into a/c all deductions. 
Surcharge will be charged on tax payable.

surcharge is charged, Income tax covred under income tax 
Act 1961,if taxable Inocme exceed above 10 lakh then 
surcharge should be pay by assessee @ 10% with ed.cess 3%