Express1040.com is yet another website from TaxHawk with different priceing model. Express1040 offer Free Federal Tax Return preparation and filing for all, while FreeTaxUSA was Free restrict the Free filing to eligible TaxPayers based on the state residence status and income limit.

This tax software is same as TaxHawk and FreeTaxUSA and we can't expect much difference in the user experience or tax preparation in using one or another. The actual difference is the price paid for the tax filing and it differs in all these versions.  They are also offering the additional services like printed copy of tax return, return copy in CD ROM for fee.