Estimates only, not tax advice.
TaxQuarterly

Quarterly Estimated Tax Planner

For US freelancers & 1099 workers — tax year 2026. Free, no login, nothing leaves your browser.

What it does: enter your self-employment profit and other income, and the planner estimates your 2026 federal income tax plus self-employment tax, how much of each payment to set aside (%), the IRS safe-harbor amount based on last year's return, and the amount and due date of each quarterly Form 1040-ES payment. It is a calculator: it does not file or pay anything with the IRS and does not replace a tax professional.

Start estimating — free
Professional at a desk with a laptop and calculator planning quarterly taxes
Next payment (Q4 2026)Jan 15, 2027

Quarterly due dates

Each Form 1040-ES payment amount and IRS due date.

Set-aside %

How much of each payment to set aside for taxes.

Federal + SE tax

2026 federal income tax plus self-employment tax estimate.

Safe harbor & private

Safe-harbor amount from last year; nothing leaves your browser.

Your 2026 estimate

You
2026 self-employment net profit (after business expenses)
Other 2026 income
Last year (2025 return)

Pricing (USD)

Free — $0

  • Federal income + self-employment tax estimate
  • Set-aside percentage
  • Safe-harbor amount from last year's return
  • Quarterly payment amounts & IRS due dates
  • Runs entirely in your browser, no account

Pro — $6/month or $49/year coming soon

  • Everything in Free
  • Saved history of every payment & deposit
  • Email reminders before each IRS deadline
  • State estimated-tax calculations
  • PDF summary for you or your accountant

Pro is a subscription that renews automatically each month or year until cancelled. Prices in US dollars; sales tax/VAT may be added at checkout. 30-day money-back guarantee (Refund Policy).

Figures used

2026 brackets, standard deduction & QBI thresholds: IRS Rev. Proc. 2025-32. Social Security wage base $184,500: SSA. Safe harbor & due dates: IRS Form 1040-ES. Federal only; state taxes not included.