Individual
Safe Harbor
Underpayment penalty shield
Estimated tax rule: pay 100% of last year's tax (110% if AGI >$150k) or 90% of current year's tax to avoid underpayment penalties regardless of actual liability.
Related terms
Underpayment penalty shield
Estimated tax rule: pay 100% of last year's tax (110% if AGI >$150k) or 90% of current year's tax to avoid underpayment penalties regardless of actual liability.