TAX YEAR 2026 · FREE · RUNS IN YOUR BROWSER

Know your real tax bill months before April.

Q: Does anything I enter leave my device?

No. Every calculator runs entirely in your browser against engine parameters compiled into the page. No account, no upload, no server call with your numbers — the browser is the compute layer.

Q: How accurate is the engine?

TaxGhost implements the 2026 rules from primary sources, tested against worked examples. It estimates, it does not file — the methodology page lists every inclusion and exclusion.

TaxGhost watches what you actually owe this year and shows the document or statute behind every move.

$12,920

projected 2026 federal balance due

2026 salaryRSUs vested this yearwithheld on vests

RSUs vested $144,000 → withheld 22% $31,680 → true federal tax on the vests $44,600 → balance due $12,920

sample scenario — Alex
computed in your browser
nothing uploaded

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At a glance

Your tax year in three numbers.

What you owe

$12,920

Projected 2026 federal balance due if you filed today.

Where you stand

76%

Safe-harbor pace: withheld enough to owe no penalty?

What to set aside

$6,700

Cash to hold so April is a transfer, not a scramble.

Figures for the sample scenario above — single filer, $180,000 salary, four $36,000 RSU vests withheld at 22%. Recomputed at build time. How the year-end report works →

Sample scenarios

Try it with a real scenario.

Engineer with quarterly RSU vests

Single, $140k base, $60k vested RSUs, 22% supplemental withholding.

Projected total: $51,073
Balance due: $19,073
Safe-harbor pace: 94%

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Freelancer with lumpy income

Head of household, $95k net SE income, irregular quarterly estimates.

Projected total: $9,365
Balance due: $0
Safe-harbor pace: 100%

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Retiree rebalancing a portfolio

Married filing jointly, $48k pension, selling $50k long-term holdings.

Projected total: $4,922
Balance due: $0
Safe-harbor pace: 100%

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How it works

Three steps. No account, no upload.

Enter a few numbers

Wages, a vest, a sale, what you have paid so far. The inputs never leave this browser.

It recomputes live

Every keystroke re-runs the full federal picture: brackets, capital gains, NIIT, FICA, safe harbors.

Watch the number all year

A running estimate and safe-harbor pace — no vest or sale is an April surprise.

Free calculators

Answer one question, free.

RSU withholding gap

22% withheld vs your real bracket — what a vest actually costs.

Stock-sale tax

Capital gains + NIIT on a sale, before you sell.

Underpayment penalty

§6654 exposure: what a shortfall costs, per quarter.

Learn

Guides that show the math.

Equity compensation

The complete guide to RSU taxes

Why the 22% withholding almost never covers the bill, and what to do that quarter.

Estimated tax

Safe harbors, explained

The 90% and 100/110% targets that keep the penalty at zero — and how to hit them.

Investing

How the 0%, 15%, and 20% brackets work

Long-term gains stack on ordinary income. Where they land decides the rate.

All guides →

What’s next

The connected monitor.

Linked accounts keep the number current without re-entry: payroll, brokerage, the works — planned, not live yet.

Early access

The connected monitor opens to the waitlist first.

Document reading, automatic gross-up, event cards, the year-end report. One email when your spot opens. The calculators stay free and never ask for it.

Join the waitlist →

Today the list is an email to hello@taxghost.com. A one-click form is on its way. See the full monitor →

Questions

Common questions

Anything missing? Ask us →

Is TaxGhost really free?

The calculators and in-browser monitor are free — no account, no email gate. The connected monitor is in early access; pricing is on the pricing page, and nothing is charged today.

Does anything I enter leave my device?

How accurate is the engine?

Built by a team that files the same forms you do.

Questions about our methodology →

TaxGhost

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