Your numbers
Filing status
Single
Married filing jointly (spouse has no income)
Married filing separately
Head of household
Cumulative net profit, Jan 1 to Mar 31 ($)
Cumulative net profit, Jan 1 to May 31 ($)
Cumulative net profit, Jan 1 to Aug 31 ($)
Cumulative net profit, Jan 1 to Dec 31 ($)
Each total must be at least the one before. Use your own records or projection.
Total tax on your 2025 return ($, optional)
Used for the prior-year safe-harbor cap. Leave 0 to use 90% of this year's tax only.
2025 adjusted gross income ($, optional)
Above $150,000 ($75,000 if married filing separately) the safe harbor is 110%.
Model the installments
Your result