US Tax Intelligence System.Federal, payroll, and state—cleanly separated.
Start with a quick federal estimate, then layer in state context. Built for speed, clarity, and programmatic coverage.
Federal, payroll, property, and state-mapped like a system.
Same PakTaxIQ pattern: choose a category first, then open the exact calculator you need.
Federal
Federal income tax + FICA
Estimate federal income tax for tax year 2025 and employee-side FICA (Social Security + Medicare).
Federal income tax + FICA (2026)
Latest IRS/SSA-based federal estimate for tax year 2026 with current thresholds.
Capital gains tax
Estimate federal capital gains tax for short-term and long-term holdings.
Tax refund estimator
Estimate refund vs amount due using annual wages and federal withholding.
Tax bracket calculator (2025)
Find your federal bracket, marginal rate, and effective rate with a band-by-band breakdown.
AMT calculator
Estimate Alternative Minimum Tax using AMTI, exemption phaseout, and regular tax comparison.
EITC calculator
Estimate the 2025 Earned Income Tax Credit by income, filing status, and qualifying children.
Child Tax Credit calculator
Estimate CTC and Credit for Other Dependents with 2025 phase-outs and refundable limits.
Crypto tax calculator
Estimate federal tax on Bitcoin, Ethereum, and other crypto sales - short-term vs long-term.
Dividend tax calculator
Estimate tax on ordinary and qualified dividends with NIIT threshold checks.
Day trading tax calculator
Estimate short-term trading tax impact and wash-sale adjustment scenarios.
Standard deduction tax savings
Estimate implied tax savings from the standard deduction using a marginal rate (simplified).
SALT cap tax savings
Estimate deductible SALT under a cap and implied savings using a marginal rate (simplified).
Mortgage interest tax savings
Estimate mortgage interest deduction savings using a marginal rate (simplified).
Charitable donation tax savings
Estimate donation deduction savings using a marginal rate (simplified).
Medical expense deduction estimator
Estimate deductible medical expenses above an AGI floor and implied savings (simplified).
Quarterly estimated tax payment planner
Plan quarterly payments from annual tax estimate minus withholding and payments made (simplified).
EV tax credit estimator
Estimate usable EV credit limited by tax liability (simplified).
Education credit estimator
Estimate education tax credit from expenses, rate, and cap (simplified).
Child & dependent care credit estimator
Estimate dependent care credit from expenses and an input rate (simplified).
Capital loss deduction tax savings
Estimate deductible capital loss under a cap and implied savings (simplified).
NIIT estimator
Estimate Net Investment Income Tax (default 3.8%) on an input NII amount (simplified).
Student loan interest tax savings calculator
Estimate tax savings from student loan interest deduction using a max cap and marginal rate.
Payroll
Paycheck (net pay) estimator
Convert annual wages into net paycheck by pay frequency with federal + FICA estimates.
Take-home pay
Estimate annual net income after federal tax and FICA.
Self-employment tax (1099)
Estimate Schedule SE style tax with deductible half and optional federal tax layering.
W-4 withholding planner
Estimate recommended per-pay federal withholding and extra withholding target.
Quarterly estimated tax (1040-ES)
Estimate quarterly federal payments based on expected annual tax and withholding.
Bonus tax calculator
Estimate bonus take-home using supplemental withholding baseline and payroll taxes.
Payroll tax calculator
Estimate employee and employer FICA payroll taxes with combined burden output.
Social Security tax calculator
Estimate employee and employer OASDI tax with wage-base cap handling.
Medicare tax calculator
Estimate base Medicare and Additional Medicare tax by filing status.
Hourly to salary
Convert hourly wage to annual salary and paycheck value by pay frequency.
Additional Medicare tax estimator
Estimate Additional Medicare Tax on wages above a threshold (simplified).
Withholding gap estimator
Estimate refund vs amount due using annual tax estimate and withholding (simplified).
FSA tax savings calculator
Estimate income tax savings from an FSA contribution using a marginal rate (simplified).
Dependent care FSA tax savings
Estimate income tax savings from a dependent care FSA contribution (simplified).
Property
Mortgage calculator
Estimate monthly principal and interest using fixed-rate amortization.
Mortgage + property tax calculator
Model full monthly housing cost with PITI, PMI, and HOA assumptions.
Home affordability calculator
Estimate affordable home price using income, debt, and DTI-style constraints.
Rent vs buy calculator
Compare owner and renter scenario costs over a chosen time horizon.
Closing cost calculator
Estimate closing costs, lender credits, and cash-to-close assumptions.
Refinance calculator
Estimate payment change, break-even months, and lifetime interest impact.
HELOC calculator
Estimate draw-period and repayment-period payment jumps on HELOC balances.
Depreciation calculator
Estimate residential rental-property depreciation baseline using IRS recovery periods.
Business
1099 tax calculator
Estimate federal 1099 taxes, withholding gap, and quarterly set-aside targets.
Small business tax estimator
Estimate federal small-business taxes and quarterly safe-harbor payment targets.
Freelancer tax calculator
Estimate freelance taxes with monthly and quarterly set-aside targets.
W-2 + 1099 tax calculator
Plan combined employee and side-income taxes using IRS safe-harbor and withholding alternatives.
QBI deduction calculator
Estimate Section 199A deduction with SSTB phase-in and W-2/UBIA limitation mechanics.
LLC tax calculator
Model single-member LLC federal taxes with optional state annual fee.
S corp tax calculator
Estimate salary, payroll taxes, pass-through income, and all-in S-corp costs.
Home office deduction savings
Estimate tax savings from a home office deduction using a marginal rate (simplified).
Business mileage deduction
Estimate mileage deduction (miles × cents per mile) and implied savings (simplified).
Business expense tax savings
Estimate tax savings from a deductible business expense using a marginal rate (simplified).
Self-employed health insurance deduction
Estimate tax savings from deductible self-employed health insurance premiums (simplified).
Retirement
401(k) calculator
Check annual employee deferral room using IRS annual and catch-up limits.
Roth IRA calculator
Estimate allowed Roth contribution using MAGI phase-out and age catch-up limits.
RMD calculator
Compute required minimum distributions from IRS factors and prior year-end balance.
Retirement withdrawal calculator
Estimate federal tax and potential additional tax on retirement-plan withdrawals.
Social Security benefits tax estimator
Estimate taxable portion of Social Security benefits using an input taxable % (simplified).
Roth vs Traditional contribution estimator
Compare tax timing using current vs future marginal tax rates (simplified).
Saver’s Credit estimator
Estimate Saver’s Credit using an input rate and eligible contribution cap (simplified).
Pension tax calculator
Estimate federal tax impact from pension/annuity taxable amounts.
ROI calculator
Calculate investment ROI, net profit, and annualized return scenarios.
HSA tax savings calculator
Estimate income tax savings from an HSA contribution using a marginal rate.
Traditional IRA tax savings calculator
Estimate tax savings from a Traditional IRA contribution using a deductible share and marginal rate.
State
Sales tax calculator
Calculate sales tax and final amount using a state/local combined rate.
Property tax calculator
Estimate annual property tax using assessed value, local rate, and exemption assumptions.
State income tax by state
Browse state pages (including no state income tax states) and upcoming state calculators.
California tax calculator
Estimate California state-tax impact with official FTB schedule references.
California W-2 + 1099 planner
Plan combined federal and California tax for wage + freelancer income with safe-harbor targets.
Texas paycheck calculator
Estimate paycheck in a no-state-income-tax scenario (federal + FICA baseline).
Texas W-2 + 1099 planner
Plan mixed payroll/freelance taxes for Texas with federal safe-harbor and withholding targets.
New York income tax calculator
Estimate New York state-tax impact with optional NYC local layer.
New York W-2 + 1099 planner
Plan combined federal and New York tax with optional NYC resident layer and estimated-tax targets.
Florida property tax calculator
Estimate Florida property tax from taxable value and local millage rates.
Los Angeles property tax calculator
Estimate Los Angeles-area property tax from taxable value and an effective annual tax rate input.
Houston property tax calculator
Estimate Houston-area property tax from taxable value and an effective annual tax rate input.
Dallas property tax calculator
Estimate Dallas-area property tax from taxable value and an effective annual tax rate input.
Phoenix property tax calculator
Estimate Phoenix-area property tax from taxable value and an effective annual tax rate input.
Denver property tax calculator
Estimate Denver-area property tax from taxable value and an effective annual tax rate input.
Seattle property tax calculator
Estimate Seattle-area property tax from taxable value and an effective annual tax rate input.
San Diego property tax calculator
Estimate San Diego-area property tax from taxable value and an effective annual tax rate input.
San Jose property tax calculator
Estimate San Jose-area property tax from taxable value and an effective annual tax rate input.
Austin property tax calculator
Estimate Austin-area property tax from taxable value and an effective annual tax rate input.
San Antonio property tax calculator
Estimate San Antonio-area property tax from taxable value and an effective annual tax rate input.
Jacksonville property tax calculator
Estimate Jacksonville-area property tax from taxable value and local millage rates.
Charlotte property tax calculator
Estimate Charlotte-area property tax from taxable value and an effective annual tax rate input.
Texas property tax calculator
Estimate Texas property tax from taxable value and a total effective tax rate.
New York property tax calculator
Estimate New York property tax from taxable value and a total effective tax rate.
Florida W-2 + 1099 planner
Plan mixed payroll/freelance taxes for Florida with federal safe-harbor and withholding targets.
Illinois sales tax calculator
Calculate Illinois sales/use tax using state and local rate inputs.
NYC sales tax calculator
Calculate NYC sales/use tax using New York base state rate plus a local add-on input.
Los Angeles sales tax calculator
Calculate Los Angeles sales/use tax using California base rate plus a local add-on input.
Houston sales tax calculator
Calculate Houston sales/use tax using Texas base rate plus a local add-on input.
Dallas sales tax calculator
Calculate Dallas sales/use tax using Texas base rate plus a local add-on input.
Seattle sales tax calculator
Calculate Seattle sales/use tax using Washington base rate plus a local add-on input.
Philadelphia sales tax calculator
Calculate Philadelphia sales/use tax using Pennsylvania base rate plus a local add-on input.
San Francisco sales tax calculator
Calculate San Francisco sales/use tax using California base rate plus a local add-on input.
Washington, DC sales tax calculator
Estimate DC sales/use tax using a rate input (category rules can vary).
Phoenix sales tax calculator
Calculate Phoenix sales/use tax using Arizona base rate plus a local add-on input.
Denver sales tax calculator
Calculate Denver sales/use tax using Colorado base rate plus a local add-on input.
Atlanta sales tax calculator
Calculate Atlanta sales/use tax using Georgia base rate plus a local add-on input.
Boston sales tax calculator
Estimate Massachusetts sales/use tax using a rate input (confirm exemptions and item rules).
San Diego sales tax calculator
Calculate San Diego sales/use tax using California base rate plus a local add-on input.
San Jose sales tax calculator
Calculate San Jose sales/use tax using California base rate plus a local add-on input.
Austin sales tax calculator
Calculate Austin sales/use tax using Texas base rate plus a local add-on input.
San Antonio sales tax calculator
Calculate San Antonio sales/use tax using Texas base rate plus a local add-on input.
Jacksonville sales tax calculator
Calculate Jacksonville sales/use tax using Florida base rate plus a local add-on input.
Charlotte sales tax calculator
Calculate Charlotte sales/use tax using North Carolina base rate plus a local add-on input.
Illinois W-2 + 1099 planner
Plan mixed payroll/freelance taxes with federal safe-harbor logic plus Illinois flat-rate state layer.
New Jersey W-2 + 1099 planner
Plan mixed payroll/freelance taxes using NJ graduated schedules plus federal safe-harbor logic.
Pennsylvania W-2 + 1099 planner
Plan mixed payroll/freelance taxes using PA flat PIT baseline plus federal safe-harbor logic.
Washington W-2 + 1099 planner
Plan mixed payroll/freelance taxes in Washington with federal safe-harbor logic and no state wage income tax.
Nevada W-2 + 1099 planner
Plan mixed payroll/freelance taxes in Nevada with federal safe-harbor logic and no state wage income tax.
Tennessee W-2 + 1099 planner
Plan mixed payroll/freelance taxes in Tennessee with federal safe-harbor logic and no state wage income tax.
Structured around systems, not generic calculators.
Department-first coverage
Federal, payroll, property, and state tools are separated so each calculator stays focused.
ExploreHigh-intent calculators
Mortgage, refinance, tax refund, and paycheck flows are built for practical scenarios.
ExploreState-by-state expansion
State pages are programmatic and ship as soon as brackets and deductions are validated.
ExploreStronger internal linking for calculators people usually use together.
Income path
Federal, paycheck, withholding
Start with federal tax, move into paycheck or take-home pay, then tune withholding instead of treating each tool in isolation.
Self-employed path
1099, self-employment, estimated tax
Keep freelancer and small-business calculators linked to the quarterly-payment workflow they usually require.
Home path
Mortgage, property tax, buy vs rent
Home-buying tools work best as a cluster because payment, tax, closing cost, and property burden all change the answer.
US tax - quick answers
Is this an official IRS calculator?+
No. PakTaxIQ provides educational estimates. Always confirm with official IRS guidance or a qualified professional.
Does the paycheck calculator match my W-4 withholding exactly?+
Not exactly. It annualizes federal income tax + FICA for an estimate. Exact payroll withholding depends on Form W-4 settings and IRS payroll tables.
Do you include state and local taxes?+
State pages are expanding. Local and city taxes vary; we add them where rules are stable and well-defined.