🎯 Tax Planning Calculators
Tax deduction, credit, refund and optimization calculators. 103 calculators updated for 2026.
United States
100Tax Refund Calculator 2026
Estimate your tax refund or amount owed before filing. Quick estimate in 60 seconds.
USStandard vs Itemized Deduction Calculator
Should you itemize or take the standard deduction? Compare both and save more.
USTax Deduction Calculator
Calculate tax savings from common deductions: mortgage interest, charitable, medical, SALT.
USChild Tax Credit Calculator
Calculate the Child Tax Credit ($2,000 per child) with income phase-out.
USEarned Income Tax Credit Calculator
Calculate EITC based on income, filing status and number of qualifying children.
USCharitable Donation Tax Calculator
Calculate your tax savings from charitable contributions with AGI limits.
USMedical Expense Deduction Calculator
Calculate deductible medical expenses exceeding 7.5% of AGI threshold.
USStudent Loan Interest Deduction Calculator
Calculate tax deduction on student loan interest up to $2,500/year.
USMarriage Tax Calculator
Calculate the marriage penalty or bonus: compare taxes as married vs two singles.
USAlternative Minimum Tax (AMT) Calculator
Check if you owe AMT and calculate the amount. ISO stock option holders at risk.
USTax Withholding Calculator
Are you having enough tax withheld? Avoid a surprise bill or overpaying throughout the year.
USMoving Expense Tax Calculator
Calculate deductible moving expenses for active-duty military members.
USTax Extension Penalty Calculator
Calculate late filing and late payment penalties if you miss the tax deadline.
USUnderpayment Penalty Calculator
Calculate IRS underpayment penalty (Form 2210) on insufficient estimated tax payments.
USEffective Tax Rate Calculator
Calculate your total effective tax rate including all federal, state, local and payroll taxes.
USLottery Tax Calculator 2026
Calculate taxes on lottery winnings — lump sum vs annuity, federal and state tax by state.
USEducation Tax Credit Calculator — AOTC & LLC
Calculate American Opportunity Credit ($2,500) and Lifetime Learning Credit ($2,000) for college expenses.
USACA Premium Tax Credit Calculator 2026
Estimate your Affordable Care Act health insurance subsidy based on income and household size.
USEV Tax Credit Calculator 2026
Check if your electric vehicle qualifies for the $7,500 new or $4,000 used EV tax credit.
USSolar Tax Credit Calculator 2026 (ITC)
Calculate the 30% federal solar Investment Tax Credit for residential and commercial installations.
USIRS Penalty & Interest Calculator
Calculate total IRS penalties and compound interest for late filing, late payment and underpayment.
USCar Loan Interest Deduction Calculator 2026 (OBBBA)
Calculate the new OBBBA auto loan interest deduction — up to $10,000/year for US-made vehicles.
USSALT Deduction Calculator 2026 — New $40,000 Cap
Calculate your state and local tax deduction under the new OBBBA $40,000 cap with income phaseout.
USDonor-Advised Fund (DAF) Tax Calculator
Calculate tax savings from bunching charitable donations via a DAF — appreciated stock and multi-year analysis.
USRelocation Tax Comparison Calculator
Compare total tax burden when moving between states — income, property and sales tax combined.
USDivorce Tax Calculator
Calculate tax implications of divorce — alimony treatment, filing status change, asset division and dependency.
USOBBBA Tax Savings Calculator 2026 — How Much Do You Save?
Calculate your total tax savings under the One Big Beautiful Bill Act — tips, overtime, SALT, CTC and more combined.
USSafe Harbor Estimated Tax Calculator
Calculate your safe harbor minimum to avoid IRS underpayment penalties — 100% or 110% of prior year tax.
USRent vs Buy Tax Benefits Calculator
Compare the tax savings of buying a home vs renting — mortgage interest, property tax and SALT deductions.
USNew Baby Tax Benefits Calculator
Calculate all tax benefits of having a baby — CTC, DCFSA, dependent care credit, filing status and more.
USIRS Payment Plan Calculator
Calculate monthly payments for IRS installment agreements with interest and reduced penalties.
USIRS Offer in Compromise Calculator
Estimate your minimum acceptable offer to settle IRS tax debt based on assets and disposable income.
USBack Taxes Calculator — Multi-Year Penalties & Interest
Calculate total owed on unfiled years with compounding failure-to-file and failure-to-pay penalties plus interest.
USAlimony Tax Calculator — Pre-2019 vs Post-2018
Calculate alimony tax impact based on divorce date — deductible/taxable for pre-2019, no tax impact for post-2018.
USDependent Care Credit Calculator (Form 2441)
Calculate the Child and Dependent Care Credit — 20-50% of up to $3,000/$6,000 in care expenses.
USAdoption Tax Credit Calculator 2026
Calculate the adoption tax credit up to $17,670 per child with income phase-out and 5-year carryforward.
USResidential Energy Credit Calculator (25C)
Calculate the Energy Efficient Home Improvement Credit — 30% of insulation, windows, heat pumps up to $1,200/$2,000.
USLawsuit Settlement Tax Calculator — Is Your Settlement Taxable?
Determine how much of your lawsuit settlement is taxable. Physical injury (tax-free), emotional distress, employment and punitive damages.
USYear-End Tax Planning Calculator 2026
Optimize your Q4 tax moves — accelerate deductions, defer income, harvest losses, max out retirement and plan charitable gifts.
USStock Option Exercise Planner — Multi-Year ISO/NSO Strategy
Plan optimal exercise timing across multiple years to minimize AMT exposure and maximize long-term capital gains treatment.
USFBAR Penalty Calculator — Foreign Bank Account Reporting
Calculate FBAR penalties — $16,536 per non-willful violation per account per year, or $165,353/50% of balance for willful violations.
USIRS Audit Risk Estimator Calculator
Estimate your IRS audit risk based on income level, deductions, filing type and red flags. See how you compare to national rates.
USTax Deadline & Payment Calendar 2026
Interactive 2026 tax calendar — federal filing deadlines, quarterly estimated payments, extension dates and state-specific due dates.
USSchedule 1-A Calculator 2025 — OBBBA Deductions Worksheet
Calculate all 4 OBBBA deductions on one IRS Schedule 1-A — tips, overtime, car loan interest and senior deduction with MAGI phaseouts.
USSchedule A Itemized Deduction Worksheet Calculator 2025
Line-by-line Schedule A calculator — medical (7.5% AGI floor), SALT ($40K cap), mortgage interest ($750K), charitable giving.
USCancellation of Debt Tax Calculator (1099-C / Form 982)
Calculate tax on forgiven debt — credit card settlements, foreclosure, student loans — with insolvency and bankruptcy exclusions.
USStudent Loan Forgiveness Tax Calculator 2026
Calculate tax on forgiven student loan debt — ARPA exclusion expired Dec 2025. IDR forgiveness now taxable, PSLF still tax-free.
USTax Refund Timeline Calculator 2026 — When Will I Get My Refund?
Estimate when your tax refund will arrive based on filing date, e-file vs paper, direct deposit, and EITC/CTC PATH Act delays.
USMarried Filing Jointly vs Separately Calculator — Which Saves More?
Detailed MFJ vs MFS comparison showing impact on brackets, EITC, student loans, IRA limits, ACA credits and total tax.
USEmployer Student Loan Repayment Tax Calculator (§127)
Calculate tax savings from employer student loan repayment — $5,250/year tax-free benefit made permanent by OBBBA, now inflation-indexed.
USTax Bracket History Calculator 2017-2026 — Pre-TCJA vs TCJA vs OBBBA
See how your taxes changed from 2017 (pre-TCJA) through 2025 (TCJA) to 2026 (OBBBA) — enter income and compare all years.
USGambling Loss Deduction Calculator — Offset Winnings on Schedule A
Optimize gambling loss deductions to offset taxable winnings — must itemize, losses capped at winnings, session tracking methodology.
USAmended Return Calculator (Form 1040-X) 2026
Compare original vs corrected return — calculate additional refund or balance due from amending your 2025 return.
USMid-Year Tax Check Calculator — Are You On Track?
Mid-year tax projection — enter YTD income and withholding, see if you owe, get refund, or need to adjust W-4.
USTax Refund Offset Calculator (TOP) — Will They Take My Refund?
Calculate how much of your refund will be offset for back taxes, student loans, child support or state debts.
USIRS Notice Response Calculator — CP2000, CP504, LT11
Calculate amount owed from IRS notices — substitute income matching, penalties, interest and response deadlines.
USInnocent Spouse Relief Calculator (Form 8857)
Determine eligibility for IRS innocent spouse relief — relief from tax liability your spouse improperly reported.
USInjured Spouse Allocation Calculator (Form 8379)
Calculate your share of joint tax refund protected from spouse's past-due debts — student loans, child support, taxes.
USIRS Statute of Limitations Tracker
Track IRS assessment, collection, refund claim and audit deadlines — 3/6/10-year rules from return filing date.
USFATCA Form 8938 Threshold Calculator
Check FATCA Form 8938 filing requirement — tiered thresholds $50K-$600K by filing status and residence abroad.
USSaver's Credit Calculator (Form 8880) 2026
Calculate the Retirement Savings Contributions Credit — 50/20/10% credit on up to $2K retirement contributions.
USForm 8962 Premium Tax Credit Reconciliation Calculator
Reconcile your APTC at year-end — calculate excess credit repayment caps or additional credit owed for ACA marketplace plans.
USPrize & Sweepstakes Winnings Tax Calculator
Calculate tax on contest, sweepstakes and HGTV-style prizes — FMV reporting, 1099-MISC Box 3, no withholding for non-cash.
USCrypto Charitable Donation Tax Calculator
Calculate tax savings from donating appreciated crypto to charity — full FMV deduction + skip capital gains, Form 8283.
USCalifornia AMT Calculator 2026 — Alternative Minimum Tax
Calculate California Alternative Minimum Tax (7% rate, separate exemption) — critical for ISO stock option exercises.
USConvenience of Employer Rule Calculator — Remote Worker Multi-State Tax
Calculate multi-state tax impact for remote workers — NY, NJ, PA, AR, CT, DE, NE convenience rule and credit for taxes paid.
USExit Tax Calculator (Section 877A) — Expatriation Tax
Calculate covered expatriate exit tax — mark-to-market deemed sale of worldwide assets, $890K exclusion (2026).
USInvestment Interest Expense Deduction Calculator (Form 4952)
Calculate investment interest deduction — limited to net investment income, ordinary-dividend election, Form 4952.
USCasualty & Theft Loss Calculator (Form 4684) — Federally Declared Disaster
Calculate casualty/theft loss deduction — $100/event + 10% AGI floor, FMV decline, federally declared disaster only.
USQDRO Calculator — Qualified Domestic Relations Order Tax
Calculate tax treatment of 401(k)/pension split in divorce — QDRO mechanics, 10% penalty exception for alternate payee.
USUsed Clean Vehicle Credit Calculator (Section 25E)
Calculate $4,000 used EV tax credit — 30% of price, $25K max sale price, MAGI caps $75K/$112.5K/$150K.
USAlternative Fuel Vehicle Refueling Property Credit (§30C)
Calculate Section 30C credit — 30% of EV charger installation cost, $1,000 personal / $100,000 business cap.
USCalifornia PTE Elective Tax Calculator (Form 3804)
Calculate California 9.3% pass-through entity elective tax to bypass federal $40K SALT cap — Form 3804.
USNew York PTET Calculator — IT-204-IP Partner Credit
Calculate NY pass-through entity tax election — IT-204-IP partner credit + NYC PTET layer for SALT cap workaround.
USCalEITC + Young Child Tax Credit Calculator
Calculate California state EITC up to $3,644 plus Young Child Tax Credit + foster youth tax credit.
USNY Empire State Child Credit Calculator 2026
Calculate NY Empire State Child Credit — $330 per qualifying child, refundable for low-MAGI families.
USClaim of Right (Section 1341) Calculator — Wage Repayment Tax
Calculate tax relief on repaid wages, bonuses or fraud disgorgement using Section 1341 — Method A deduction vs Method B credit.
USAMT Credit Carryforward Calculator (Form 8801)
Track Minimum Tax Credit from prior AMT (especially ISO exercises) — carryforward against future regular tax.
USForeign Tax Credit Carryforward Calculator
Track FTC carryforward by basket — 1-year carryback, 10-year forward, separate passive/general/GILTI categories.
USRoyalty Income Tax Calculator — Schedule E vs Schedule C
Calculate tax on book, music, patent and mineral royalties — Schedule E (passive) vs Schedule C (active) classification.
USWhistleblower Award Tax Calculator (IRS, SEC, DOJ)
Calculate tax on whistleblower awards — 15-30% IRS, attorney fees above-the-line, AMT impact, multi-year payment.
USMulti-State PTE Election Comparison Calculator (36 States)
Compare PTE election across all 36 PTET states — federal SALT cap savings, partner credit recovery rules.
USForm 1116 Detailed FTC Calculator — Line-by-Line Worksheet
Detailed Form 1116 Foreign Tax Credit — multiple countries, baskets (passive/general/GILTI), high-tax kickout.
USFirst-Time Penalty Abatement (FTA) Calculator
Determine IRS first-time penalty abatement eligibility — 3-year clean compliance check, FTF/FTP/FTD penalties.
USDisaster Relief Tax Deferral Calculator (§7508A + §139)
Calculate federally declared disaster tax relief — §7508A filing/payment deferral, §139 employer disaster payments exclusion.
USForm W-8BEN Treaty Rate Calculator — Reduced US Withholding
Calculate reduced US withholding rates under tax treaties — country selector for dividends, interest, royalties.
USForm 5471 Category Filer Calculator (1-5)
Determine Form 5471 filing category 1-5 for US persons owning foreign corporations — schedules required, $10K+ penalty risk.
USForm 1099-C Mortgage Forgiveness Calculator (§108)
Calculate cancellation-of-debt income with §108 exclusions — principal residence, insolvency worksheet, Form 982.
USHome Foreclosure & Short Sale Tax Calculator
Calculate dual-event tax — capital gain on deemed sale + cancellation of debt income with recourse vs non-recourse rules.
USBackup Withholding Calculator (24% IRC §3406)
Calculate 24% backup withholding on payments to payees with missing/invalid TIN — interest, dividends, broker proceeds.
USLottery State Withholding Calculator (50 States)
Calculate lottery winnings withholding by state — federal 24% + state rates from 0% (FL/TX) to 10.9% (NY).
USWorkers Comp Benefits Tax Calculator
Calculate tax treatment of workers comp benefits — generally tax-free under IRC §104(a)(1), SS offset trap if disabled.
USDisability Insurance Benefits Tax Calculator
Calculate tax on private disability benefits — depends on who paid premiums (employer pre-tax = taxable; employee post-tax = tax-free).
USWrongful Death Settlement Tax Calculator
Calculate tax on wrongful death settlements — compensatory tax-free §104(a)(2), punitive taxable, lost wages allocation.
USForm 1098-T Education Tuition Calculator
Decode Form 1098-T — Box 1 payments received, Box 5 scholarships, calculate AOTC/LLC eligibility.
USForm 8865 Foreign Partnership Calculator (US Partner)
Calculate Form 8865 reporting for US persons in foreign partnerships — 4 categories, schedules required, $10K-$50K penalties.
USForm 8858 Foreign Disregarded Entity Calculator
Calculate Form 8858 reporting for FDE/FB owners — Schedule M, $10K base + $50K monthly continuation penalty.
USForm 4868 Tax Extension Calculator — Estimate Payment Due
Calculate estimated tax due with Form 4868 extension — 6-month extension to file, but tax must be paid by Apr 15.
USPSLF Tax-Free Forgiveness Tracker
Track Public Service Loan Forgiveness progress — 120 qualifying payments, tax-free under IRC §108(f)(4), 10-year payoff.
USIDR Tax Bomb Calculator (20-25 Year Forgiveness)
Calculate income-driven repayment tax bomb — taxable forgiveness at year 20-25 (IBR/PAYE/SAVE), federal + state tax shock.
USUniversal
3Tax Freedom Day Calculator
Calculate your personal Tax Freedom Day — how many days you work just to pay taxes.
UniversalUK High Income Child Benefit Charge Calculator
Calculate the child benefit clawback — 1% per £200 above £60,000. Find out if claiming child benefit is still worth it.
UniversalNew Zealand Working for Families Tax Credit Calculator
Calculate NZ WFF entitlements — Family Tax Credit, In-Work Tax Credit and Best Start payments with income abatement from $42,700.
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