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Tax tools

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Income Tax Calculator

Estimate federal income tax using progressive tax brackets and the standard deduction.

Reverse Sales Tax / VAT Calculator

Given a tax-inclusive total price, find the pre-tax price and the tax amount.

Quarterly Estimated Tax Calculator (Self-Employed)

Estimate self-employment tax and federal income tax, split into quarterly payments.

Capital Gains Tax Calculator

Estimate federal and state capital gains tax from sale price, basis, selling costs, and income.

Sales Tax Calculator

Calculate sales tax, taxable amount, and final checkout price from subtotal, discounts, and local tax rate.

Payroll Tax Calculator

Estimate employer payroll tax and benefits load for hiring, budgeting, and compensation planning.

Tax Refund Calculator

Estimate tax refund or balance due from withholding, deductions, credits, and estimated tax.

Bonus Tax Calculator

Estimate bonus withholding, FICA, state tax, retirement contribution, and net bonus pay.

Roth IRA Conversion Tax Calculator

Estimate tax impact of converting pre-tax retirement funds to a Roth IRA.

Crypto Tax Calculator

Estimate crypto capital gains tax from proceeds, cost basis, fees, and tax rates.

Side Hustle Tax Calculator

Estimate self-employment and income tax owed on side hustle income including the self-employment tax deduction.

IRS Payment Plan Calculator

Estimate monthly payment and total cost of an IRS installment agreement including setup fee and interest.

Tax Refund Anticipation Loan Cost Calculator

Calculate the effective cost of a tax refund anticipation loan compared to waiting for direct deposit.

Self-Employment Quarterly Tax Calculator

Estimate quarterly estimated tax payment amount for self-employment income including SE tax and income tax.

1099 vs W-2 Take-Home Pay Calculator

Compare net take-home pay between a 1099 contractor rate and an equivalent W-2 salary after taxes and benefits.

Side Income Tax Withholding Adjustment Calculator

Estimate additional W-2 withholding needed to cover taxes on side income without making quarterly payments.

Quarterly Estimated Tax Underpayment Penalty Calculator

Estimate the IRS underpayment penalty for insufficient quarterly estimated tax payments.

Alternative Minimum Tax (AMT) Calculator

Estimate whether Alternative Minimum Tax applies by comparing regular tax to the AMT calculation.

Net Investment Income Tax (NIIT) Calculator

Estimate the 3.8% Net Investment Income Tax owed based on modified adjusted gross income thresholds.

QBI Deduction Calculator

Estimate the Section 199A qualified business income deduction for a pass-through business.

Backup Withholding Calculator

Calculate the backup withholding amount withheld from a payment when backup withholding rules apply.

Kiddie Tax Calculator

Estimate tax owed on a child’s unearned investment income at the parent’s marginal tax rate.

State Tax Residency Day-Count Calculator

Track days spent in a state against the statutory residency threshold that triggers state tax residency.

Marginal vs Effective Tax Rate Calculator

Calculate and compare your marginal tax bracket rate against your true effective (average) tax rate.

Itemized vs Standard Deduction Threshold Calculator

Calculate the itemized deduction total needed to exceed the standard deduction and be worth claiming.

HSA Triple Tax Advantage Savings Calculator

Estimate total tax savings from HSA contributions across the deduction, growth, and withdrawal tax benefits.

Dependent Care FSA Tax Savings Calculator

Estimate tax savings from a dependent care FSA compared to paying for childcare with after-tax dollars.

Adoption Tax Credit Calculator

Estimate the federal adoption tax credit available based on qualified adoption expenses and income phase-out.

Energy Efficient Home Improvement Tax Credit Calculator

Estimate the federal tax credit available for qualifying energy-efficient home improvements.

Capital Gains Calculator

Estimate taxable capital gain, cost basis, holding-period treatment, and planning amount before sale.

Marginal Tax Rate Calculator

Estimate marginal tax rate from taxable income, filing status, bracket thresholds, and additional-income scenario.

Effective Tax Rate Calculator

Calculate effective tax rate by comparing total tax to gross or taxable income across filing assumptions.

Standard Deduction Calculator

Estimate standard deduction eligibility and taxable-income impact from filing status, age, blindness, and year assumptions.

Itemized Deduction Calculator

Compare itemized deductions with the standard deduction using mortgage interest, taxes, donations, and medical expenses.

Child Tax Credit Calculator

Estimate potential child tax credit from qualifying children, income phaseout, filing status, and refundable-credit rules.

Earned Income Credit Calculator

Estimate earned income credit eligibility from earned income, filing status, children, and phaseout ranges.

Estimated Tax Payment Calculator

Estimate quarterly estimated tax payment from income, withholding, deductions, credits, and safe-harbor assumptions.

Tax Withholding Calculator

Estimate paycheck withholding target from income, dependents, deductions, credits, and pay frequency.

IRS Penalty Calculator

Estimate potential failure-to-pay and late-payment tax penalty exposure from unpaid tax and time.

Self-Employment Tax Calculator

Estimate Social Security, Medicare, and income-tax planning amount for self-employed income.

1099 Tax Calculator

Estimate taxes on 1099 contractor income after expenses, self-employment tax, and deductions.

W-4 Withholding Calculator

Estimate paycheck withholding adjustment to reduce refund surprises or year-end tax balance.

FICA Tax Calculator

Estimate Social Security and Medicare payroll tax for employees and self-employed workers.

State Income Tax Calculator

Estimate state income tax from taxable income, deductions, credits, and state tax rate assumptions.

Small Business Tax Calculator

Estimate business tax planning amount from profit, entity assumptions, payroll, and deductions.

LLC Tax Calculator

Estimate LLC tax planning amount from profit, owner pay, self-employment tax, and deductions.

S-Corp Tax Savings Calculator

Estimate potential S-corp payroll tax savings from profit, salary, payroll taxes, and costs.

Rental Income Tax Calculator

Estimate taxable rental income after expenses, mortgage interest, depreciation, and tax rate.

Depreciation Calculator

Estimate annual depreciation expense, book value, and tax shield from asset cost and useful life.

Charitable Donation Tax Savings Calculator

Estimate potential tax savings from charitable donations, deduction limits, and marginal rate.

Tax Bracket Calculator

Estimate marginal tax bracket, effective rate, taxable income, and next-dollar tax exposure.

Taxable Income Calculator

Estimate taxable income after deductions, adjustments, exclusions, and filing assumptions.

Standard vs Itemized Deduction Calculator

Compare standard deduction and itemized deduction benefit from mortgage interest, SALT, and donations.

Estate Planning Tax Calculator

Estimate estate exposure, exemption use, gift planning impact, and taxable estate amount.

Sales Tax Deduction Calculator

Estimate potential sales-tax deduction value from purchase amount, tax rate, and marginal rate.

Tax Equivalent Yield Calculator

Compare taxable and tax-exempt yields using marginal tax rates and investment income assumptions.

Student Supplies Sales Tax Calculator

Estimate tax-inclusive cost for textbooks, devices, lab supplies, and school materials.

Graduate Stipend Tax Planner

Estimate tax planning amount for graduate stipend, fellowship income, fees, withholding, and deductions.

Research Honorarium Tax Calculator

Estimate tax exposure for speaking honoraria, consulting income, reimbursements, and withholding.

Academic Royalty Tax Calculator

Estimate tax exposure from textbook royalties, course materials, licensing income, and expenses.