Get in touch.

quarterlytaxplan.com is operated by Red Goggles LLC. We read every message — especially corrections. On a topic this consequential, accuracy matters to us.

Email

The fastest way to reach us is email: [email protected]. It reaches the team that maintains this site.

What we can help with

Corrections. If a figure looks wrong or out of date — a due date, a safe-harbor threshold, the Social Security wage base, a state's schedule, or the Section 6621 interest rate — tell us and cite a source if you have one. We'll verify against the primary source and update.
Questions about the tool. How an input is used, what an estimate assumes, or why your number came out the way it did.
Feedback. Anything confusing, broken, or missing.

What we can't do

We can't give personalized tax, legal, or financial advice, prepare your return, or confirm exactly what you owe — those depend on your full tax picture. For that, use IRS Direct Pay, consult IRS Publication 505, or work with a CPA or enrolled agent. See our disclaimer.

Privacy

We don't collect your calculator inputs, and we don't need your personal information to answer a question. For details, see our privacy page.