The exclusion of up to $5,000 for death benefits no longer applies. It had applied only for employees who died before August 21, 1996. Only a death gratuity paid to a survivor of a member of the Armed Forces continues to be excludable from gross income.
Advance payment of current tax liability based either on wage withholdings or installment payments of your estimated tax liability. To avoid penalties, you generally must pay to the IRS either 90% of your final tax liability, or either 100% or 110% of the prior year’s tax liability, depending on your adjusted gross income.