Terms

Checked October 17, 2026

By using this site you agree that it is general information about US federal estimated tax, not advice for your facts.

No professional relationship

Reading a page, running the planner, or sending a contact message does not make you a client. The site does not hold itself out as a certified public accountant, enrolled agent, or attorney.

Figures change

IRS forms, wage bases, and due dates change. 2027 dates are expected until Form 1040-ES for 2027 is published. January 18, 2028 is our calculation and is marked uncertain. You are responsible for confirming amounts on IRS.gov or with a qualified professional before you pay.

No warranty

Pages are offered as-is. We work to match the official sources listed on each page, and we can still be wrong or out of date. We are not liable for taxes, penalties, or interest that result from relying on this site.

Your inputs

You are responsible for the numbers you type. The planner applies the formulas described on the tool page. It does not know your whole return.

External pages

Links to IRS.gov, SSA.gov, and any later product page are other sites with their own terms. A product link, if one is added, is covered on the disclosure page.