Your real tax bill, all year long.

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.

Enter each vest, sale, or bonus and TaxGhost keeps what you'll owe in front of you, plus what to set aside so April isn't a surprise.

$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

Try the monitor or run a free calculator →

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%

Load this profile →

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%

Load this profile →

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%

Load this profile →

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 →

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

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

Loading…

Your real tax bill, all year long.

Try it with a real scenario.

Your tax year in three numbers.

Answer one question, free.

Guides that show the math.

The complete guide to RSU taxes

Safe harbors, explained

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

Common questions

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

Your real tax bill, all year long.

Try it with a real scenario.

Your tax year in three numbers.

Answer one question, free.

Guides that show the math.

The complete guide to RSU taxes

Safe harbors, explained

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

Common questions

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