for old fashioned: pros- it is official and original and cons- the tax papers can be lost and theft easily
for tax preparation software- pros- it is convenient and time efficient to prepare tax papers in a software, cons- it may get deleted, or plagiarized. Also, one can easily steal the information thorugh hacking.
for professional tax preparers : pros- they can neatly and easily prepare the papers, cons- they might be corrupted staff and can alter the numbers
