surcharge tax

No.

Here marginal relief is available.

 Surcharge: For Individual/HUF

  i)  The amount of income-tax shall be increased by a surcharge at the rate of 10% of such tax, where total income exceeds fifty lakh rupees but does not exceed one crore rupees. However, the surcharge shall be subject to marginal relief (where income exceeds fifty lakh rupees, the total amount payable as income-tax and surcharge shall not exceed total amount payable as income-tax on total income of fifty lakh rupees by more than the amount of income that exceeds fifty lakh rupees).

 ii)  The amount of income-tax shall be increased by a surcharge at the rate of 15% of such tax, where total income exceeds one crore rupees. However, the surcharge shall be subject to marginal relief (where income exceeds one crore rupees, the total amount payable as income-tax and surcharge shall not exceed total amount payable as income-tax on total income of one crore rupees by more than the amount of income that exceeds one crore rupees).

How can that be?

The increase in tax liability over 50 lakhs would be restricted to the increase in income.

Roughly speaking....... if tax liability over 50 lakhs is xxx. Then the tax liability over [50L10K] would be > xxx but < or= to [xxx+10K], due to marginal relief.

For details refer: marginal-relief-surcharge