About CiteTax
Every calculation shows its work.
CiteTax started with a frustration Eric ran into doing his own taxes as a freelancer. He needed to know why his quarterly estimated payment was the number it was — not just the number itself. Every calculator he tried gave him an answer and nothing else: no bracket breakdown, no citation, no way to check the math against the actual IRS rule behind it. He either had to trust it blindly or go read the publication himself and redo the arithmetic by hand.
So he built something better. CiteTax is a collection of free, no-account- required tools that show the full bracket-by-bracket path to your number — the same math and the same published sources the IRS and state revenue departments use — so you can verify it yourself instead of taking a black box's word for it.
Eric is a software developer who spent years building tools for other people's businesses before turning that same instinct toward something he used himself. He isn't a CPA or tax attorney — CiteTax exists precisely because he wanted a tool that showed its reasoning clearly enough that he didn't need to be one to trust the answer. He builds and maintains every tool on this site personally.
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How it works
Every tool on CiteTax is grounded in a documented, citable method — a published formula, an authoritative standard, or a well-established model. We don't approximate or invent numbers. If we can't cite a primary source for the logic, we don't publish the tool.
For CiteTax specifically, that means IRS Revenue Procedures, IRS publications (Pub 15-T, Pub 505, Pub 550, Schedule SE instructions, Form 8960 instructions) and each state's official Department of Revenue bracket tables and rate schedules — never a third-party summary. Every rate is checked against the primary source before a tool ships, and every figure is re-verified each year when new tax-year numbers are released, rather than carried over on the assumption that nothing changed.
Our commitments
- Free, no sign-up required. Every tool on this site is free to use with no account, subscription, or paywall.
- We show our work. Every tool explains its methodology, cites its sources, and surfaces assumptions — so you can verify the logic, not just trust the output.
- Honest about limitations. Where precision is limited or assumptions are required, we say so. Tools compute; they don't replace professional judgment.
- Kept current. Tools that use figures that can change over time carry a “last reviewed” date and are treated as an ongoing maintenance responsibility, not a one-time build.
Get in touch
Questions, corrections, or suggestions: hello@citetax.com. Eric reads every message personally.