How this calculator works
The engine runs the actual 2026 sequence the IRS uses. Your wages start as gross income. Above-the-line deductions come off first — for most filers in 2026 that means the new OBBBA amounts for tax-exempt tips (up to $25,000) and qualified overtime (up to $12,500 single, $25,000 joint), which reduce taxable income even though they never appear on your W-2. What remains after subtracting either the $16,100 standard deduction (single), $32,200 (married filing jointly) or $24,150 (head of household) — or your itemized total, whichever is larger — is taxable income. That number drops through the seven 2026 brackets: 10%, 12%, 22%, 24%, 32%, 35% and 37%.
The 2026 brackets in plain terms
Brackets are layers, not switches. On $78,000 of taxable income as a single filer, only the first $12,400 is taxed at 10% and the slice from $12,400 to $50,400 at 12% — everything from $50,400 up to $78,000 lands in the 22% layer. That is why your "22% bracket" paycheck feels less painful than 22% of everything: the effective rate on that $78,000 works out near 13.4%. The calculator shows both numbers side by side, because quoting only the marginal rate is the single most common way people overestimate their own taxes.
Credits, not deductions
After the brackets, the Child Tax Credit subtracts dollars — up to $2,200 per qualifying child under 17 in 2026, phasing out above $200,000 of income for single filers ($400,000 joint). A credit is worth far more than a deduction of the same face amount: $2,200 of credit is $2,200 off the bill, while $2,200 of deduction only saves the share your top bracket would have taxed. The new senior bonus deduction ($6,000 per person 65 and older, phasing out from $75,000 single) behaves like a deduction, not a credit — it shrinks taxable income rather than the bill.
A worked example: $78,000 single, no kids
Take $78,000 of wages, standard deduction, no tips or overtime. Gross $78,000 − $16,100 standard = $61,900 taxable. Layer by layer: $12,400 at 10% is $1,240; the next $38,000 (to $50,400) at 12% is $4,560; the remaining $11,500 at 22% is $2,530. Total federal income tax ≈ $8,330 — an effective rate of about 10.7% on gross pay. Add one child and the $2,200 credit drops the bill to about $6,130. This is the arithmetic the calculator runs on every keystroke, and the breakdown rows show each layer so you can audit it yourself.
What it deliberately leaves out
This estimator assumes you take the larger of standard or itemized deductions automatically, skips rarely-claimed items (foreign tax credit, education credits, adoption), and does not run the Alternative Minimum Tax — at 2026 exemption levels of $90,100 single / $140,200 joint, AMT touches roughly the top few percent of filers. If you have large capital gains, use the dedicated capital gains calculator, which layers the preferential 0/15/20% rates on top of this engine. For everything else, the estimate lands within a few hundred dollars of real filing for typical W-2 households.
Estimates for planning only — not tax, legal or accounting advice. Your actual return depends on facts this tool does not ask about. Figures are based on IRS Revenue Procedure 2025-32 (tax year 2026), verified October 2026.