Reduce your quarterly tax payments
Estimate your lowest quarterly tax payment, avoid penalties, and more.
What's your filing status?
Safe Harbor vs. Annualized Income — which method saves you more?
The two IRS-approved ways to figure quarterly estimates can produce very different payments. Safe harbor guarantees penalty protection; the annualized income method can lower what you pay when your income is uneven. Compare both side by side and pay the minimum required — no more, no less.
Compare the two methods →Free tax calculators
Each one answers a single question fast. Together, they're the pieces of your full quarterly estimate.
Self-Employment Tax Calculator
Estimate Social Security + Medicare tax on your 1099 / freelance income.
Open calculator →Income Tax Calculator
See your federal income tax and effective rate by bracket and filing status.
Open calculator →Capital Gains Tax Calculator
Estimate the tax on your long-term capital gains at the 0/15/20% rates.
Open calculator →IRS-approved methods
Built on Publication 505 — safe harbor and annualized income methods.
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Run every income type, state, and penalty check together in one accurate quarterly calculation.