Taxes & Legal
Quarterly Estimated Tax Calculator
Roughly what to set aside for taxes from a profitable business — split into a quarterly payment and a per-week set-aside so it never becomes a surprise.
Inputs
- Expected annual net profit — Business profit you expect to be taxed on.
- Effective tax rate — Combined income + self-employment rate you set aside for.
How to use this calculator
- Enter your expected annual net profit and an effective tax rate to set aside.
- The tool splits the reserve into quarterly, monthly, and weekly amounts.
- Sweep the weekly figure to a separate account. This is a planning estimate, not tax advice, so confirm with a professional.
What each term means
- Estimated taxes
- Quarterly prepayments business owners make on expected profit.
- Effective tax rate
- The blended rate you set aside, covering income and self-employment tax.
- Self-employment tax
- Social Security and Medicare owed by the self-employed, and often the surprise.
Educational disclaimer: Outputs are simplified educational estimates built from the numbers you enter — they are not financial, legal, tax, or investment advice, and real decisions deserve verified figures and qualified professionals.