Tax year 2026 · updated August 24, 2026 · engine estimates
W-4 extra withholding calculator (2026)
Form W-4 step 4(c) lets you ask your employer to withhold an extra dollar amount each paycheck. Type that extra in the calculator. It reduces cash take-home now and is treated as additional federal withholding in the annual total — it is not an extra tax on top of the computed bracket tax for planning, it is more money sent to the IRS during the year.
Your pay
Numbers update as you type. Copy the URL to share this estimate.
That’s $2,080,000.00 a year.
Taxed as supplemental wages (22% federal flat, plus FICA and a simplified state line).
Estimated take-home
per paycheck
| Item | Paycheck | Annual |
|---|---|---|
| Gross | $80,000.00 | $2,080,000.00 |
| Federal income tax | $27,676.93 | $719,600.25 |
| Social Security | $439.96 | $11,439.00 |
| Medicare | $1,810.77 | $47,080.00 |
| State income tax | $9,484.11 | $246,586.79 |
| CA SDI | $1,040.00 | $27,040.00 |
| Total tax | $40,451.77 | $1,051,746.04 |
| Net / take-home | $39,548.23 | $1,028,253.96 |
Estimate only — not tax advice or full tax software. 2026 federal brackets and a simplified state model. Locals other than optional NYC, CA SDI, and WA Cares are omitted. Confirm with your pay stub or a tax professional.
The calculator sample starts as a single filer. Change filing status above to see married or head-of-household take-home on this same wage. Numbers update as you type.
People use extra withholding for a second job, a working spouse, or to avoid a bill in April. This page does not compute the “correct” extra. It shows what a chosen extra does to each check and to annual net.
The engine already computes a simplified annual federal tax, then adds your extra on top of that withholding sketch. If you set extra very high, take-home falls even when the annual liability would not justify it — that is the point of the control.
State withholding is unchanged by this federal extra field. Reviewed August 24, 2026.
Sample estimates
$80k CA biweekly, no extra: annual net $60,859.58 · per paycheck $2,340.75 · effective tax 23.9%. Estimate only.
Engine estimates for tax year 2026 — not tax advice or a pay stub. Omits local taxes, most credits, and SDI/PFML. See methodology.
Related: Bonus paycheck calculator · Married vs single paycheck · Methodology
FAQ
Is extra withholding a tax?
It is more federal cash withheld from the check. Your actual tax is computed on the return.
Per paycheck or per year?
The field is dollars per paycheck. Annual extra is that amount times the number of periods.
Does this replace W-4 steps 2–4?
No. It only models an extra dollar amount, not multiple jobs or dependents credits.