Excise tax is due on small enterprises on the taxable goods and services they offer. Excise tax differs from income tax in several ways. Company owners must submit IRS Form 720 and make quarterly payments.   ●     Excise tax returns are due by April 30 for January to March. ●     July 31 for April to June. ●     October 31 for July to September. ●     January 31 for October to December.