WiseCalc

Tax Withholding Calculator

Compare a basic single-filer 2026 tax estimate with withholding projected over the remaining calendar months.

2026 federal income-tax scenario

Elapsed calendar months, not months employed. Full-year income is an estimate; withholding is extrapolated at the average entered rate. This is a scenario, not today's date or a Form W-4 instruction.

Basic single-filer estimate; timing penalties and safe-harbor rules are not modeled. Use the IRS estimator for an actual withholding change.

Uses 2026 ordinary-income brackets and entered deductions and nonrefundable credits. It does not determine eligibility or include refundable credits, payroll/self-employment tax, AMT, state tax or special capital-gain rates.

IRS sources — 2026 · IRS withholding estimator
$
$20,000$500,000
$
$0$100,000
months
1 month12 months
$
$0$200,000
$
$0$100,000
$
$0$20,000
Projected Refund
$7,230.00
At unchanged average withholding
Estimated Tax
$8,770.00
Projected Withholding
$16,000.00
Future monthly withholding target
$128.33
Change from current monthly average
$1,205.00
Decrease from current average
Taxable Income
$63,900.00

Remaining calendar months: 6.

Withholding vs. Tax Liability

The chart allocates annual estimated tax evenly over 12 months and models withholding at the entered monthly average; it is not actual paystub history or monthly tax accrual.

Tax Withholding Calculator

Compare a basic single-filer 2026 tax estimate with withholding projected over the remaining calendar months.

Enter complete calendar months elapsed in the hypothetical 2026 scenario, not months employed. Full-year income and a constant average withholding rate are assumed. Future monthly target and change from the current average are separate; neither is available after month 12. This does not calculate a paycheck or Form W-4 entry, timing penalties or safe-harbor eligibility. Use the IRS Tax Withholding Estimator for an actual withholding change.