Finance minister Pranab Mukherjee is likely to meet state finance ministers on July 21 to discuss constitutional amendments needed to roll out the proposed goods and services tax from the next fiscal.

State finance ministers are likely to bargain for some flexibility in the new indirect tax regime as they fear their fiscal autonomy will be impacted by the uniform tax structure.

The finance minister is also likely to discuss the compensation package for states for any loss of revenue because of the implementation of the goods and services tax.