Tax Calculators & Estimators
Every tool reads from a dated, sourced dataset. Toggle the tax year, compare jurisdictions, and reverse-solve — the things generic calculators and chat assistants flatten.
Core calculators
The essentials — every figure tied to a published source.
Federal Income Tax
2026 IRS brackets, standard deduction, LTCG, NIIT, SE tax.
State Income Tax
All 50 states + DC with local taxes and reciprocity notes.
Self-Employment & QBI
15.3% SE tax and the 20% QBI deduction with phase-in.
Capital Gains
0/15/20% rates plus the 23.8% high-earner ceiling.
W-4 Withholding
2026 payroll withholding from IRS Pub. 15-T.
Refund vs Owed
Set withholding against tax to see whether you get money back or owe in April.
Estate Tax
The $15M per-person exclusion and portability.
Gift & GST
Annual exclusion, lifetime use, generation-skipping tax.
Differentiators
The multidimensional, reverse-solving tools generic calculators omit.
Reverse Tax (Target Net)
Solve for the gross income needed to hit a take-home target.
State vs State
Compare marginal and effective rates across two states.
Single vs Married
See how filing status moves your bracket.
Standard vs Itemized
When itemizing beats the 2026 standard deduction.
QSBS Exclusion
Model the OBBBA tiered qualified small-business-stock gain.
Crypto Tax
FIFO gain/loss by lot, short vs long-term, NIIT on digital-asset dispositions.
Multi-State Residency
Walk through dual-residency and convenience-rule traps.
Year-End Planning
End-of-year moves that change your 2026 bill.
Scenario simulators
Change one variable and watch the whole picture move.
401(k) / IRA Savings
What a retirement contribution saves in federal tax, and what it grows to.
Raise Impact
How much of a raise you actually keep after federal tax.
Target Effective Rate
Pick a target effective rate; find the income range that lands there.
Target Refund
Pick a refund; see the deductions needed to produce it.
Which calculator answers which question
Most people arrive wanting one of three things, and the right tool depends on which. If you want to know what you will owe, start with the federal income tax estimator and add the state estimator on top — federal and state are computed on different bases, and no single number covers both. If you want to know what to change before year-end, the simulators are the faster route: they hold everything constant and move one input, which is the only way to see the marginal effect of a contribution, a raise, or a deduction. If you want to know what income produces a given outcome, use the reverse tools — they solve backwards from a target take-home, a target effective rate, or a target refund.
How the numbers are sourced
Every figure comes from a dated dataset: IRS Rev. Proc. 2025-32 supplies the 2026 inflation adjustments (brackets, standard deduction, and the amounts that move every year), IRS Pub. 15-T supplies withholding methods, and the One Big Beautiful Bill Act (Pub. L. 119-21) supplies the provisions it changed — the SALT cap, the estate exclusion, QBI, and QSBS. State figures come from each state's Department of Revenue. Where a rule is genuinely unsettled or varies by locality, the tool says so rather than guessing.
The practical consequence of sourcing this way is that our numbers can be checked. Each tool links the source it used, so if a result looks wrong you can open the underlying publication and verify it yourself — which is the only sensible way to use any tax calculator.
What these tools deliberately do not do
They do not file anything, do not store what you type, and do not ask who you are. Your inputs are processed in your own browser and are never transmitted. They also do not model every provision: the alternative minimum tax, net investment income tax, and most credits appear only in the tools that say so explicitly. A calculator that reduced your whole return to one number would be hiding more than it revealed.
For that reason, treat every output as a planning estimate. Before you file, or before you act on a number that matters, confirm it with a licensed CPA, enrolled agent, or the source publication the tool cites.