🏢 Business Tax Calculators
Corporate tax, LLC tax and business entity tax calculators. 65 calculators updated for 2026.
United States
61Corporate Tax Calculator
Calculate federal corporate income tax at the flat 21% rate plus state corporate tax.
USLLC Tax Calculator
Calculate taxes for single-member and multi-member LLCs with pass-through taxation.
USS-Corp Tax Calculator
Calculate S-Corp tax savings. Compare salary vs distributions for optimal tax outcome.
USLLC vs S-Corp Tax Comparison
Compare total tax burden: LLC self-employment tax vs S-Corp salary + distributions.
USQBI Deduction Calculator
Calculate the Section 199A Qualified Business Income deduction (up to 20%).
USPayroll Tax Calculator
Calculate employer payroll taxes: FICA, FUTA and state unemployment tax.
USBusiness Expense Deduction Calculator
Estimate tax savings from common business deductions. Track deductible expenses.
USDepreciation Tax Deduction Calculator
Calculate Section 179 and bonus depreciation deductions for business assets.
USNanny Tax Calculator 2026 (Schedule H)
Calculate employer taxes for household employees — nanny, housekeeper, caregiver. FICA, FUTA and Schedule H.
USTrue Cost of an Employee Calculator
Calculate total employer cost — salary plus FICA, FUTA, SUTA, workers comp and benefits overhead.
USLease vs Buy Vehicle Tax Calculator
Compare tax deductions for business vehicle — lease payment deduction vs Section 179 depreciation.
USPartnership & K-1 Tax Calculator
Calculate tax on K-1 partnership income — guaranteed payments, distributive share, SE tax and basis limitations.
USS-Corp Reasonable Salary Calculator
Calculate the optimal S-Corp officer salary to minimize payroll tax while satisfying IRS reasonable compensation rules.
USR&D Tax Credit Calculator (Form 6765)
Calculate your Research & Development tax credit — up to $500K/year against payroll taxes for qualifying small businesses.
USFranchise Tax Calculator — TX, DE, CA & More
Calculate state franchise taxes for Texas (margin tax), Delaware, California ($800 minimum) and other states.
USGross Receipts Tax Calculator — OH CAT, WA B&O, OR CAT
Calculate gross receipts taxes: Ohio CAT, Washington B&O, Oregon CAT, Nevada commerce tax and more.
USSelling a Business Tax Calculator — Asset vs Stock Sale
Calculate taxes on selling your business — asset sale allocation, stock sale capital gains, goodwill, depreciation recapture and installment options.
USCannabis Business Tax Calculator — Section 280E
Calculate cannabis business taxes under Section 280E — no deductions except COGS, plus state excise taxes by state.
USCost Segregation Tax Savings Calculator
Calculate accelerated depreciation savings from a cost segregation study on commercial real estate — 5, 7 and 15-year components.
USBonus Depreciation Calculator 2026 — Phase-Out Timeline
Calculate bonus depreciation at 40% (2026), 20% (2027), 0% (2028). Plan asset purchases to maximize first-year deductions.
USNonprofit Tax Calculator — UBIT & Form 990
Calculate Unrelated Business Income Tax (UBIT) for 501(c)(3) nonprofits — investment income, advertising, rental income thresholds.
USBusiness Vehicle Deduction Calculator — Section 179 vs Mileage
Compare Section 179 ($12,200/$31,300/unlimited by weight), bonus depreciation (40% in 2026), standard mileage (72.5¢) and actual expenses.
USC-Corp vs S-Corp Tax Comparison Calculator
Compare C-Corp (21% flat + dividend tax double taxation) vs S-Corp (pass-through) — find the breakeven income level.
USSole Proprietor vs LLC Tax Calculator
Compare sole proprietorship vs single-member LLC vs LLC with S-Corp election — find when incorporating saves money.
USESOP Tax Advantage Calculator — Employee Stock Ownership Plan
Calculate ESOP tax benefits for business owners — Section 1042 capital gains deferral and tax-free S-Corp ESOP income.
USMulti-State Tax Apportionment Calculator
Calculate state income tax allocation across multiple states — single sales factor, three-factor and state-specific apportionment formulas.
USExcess Business Loss Limitation Calculator (Section 461(l))
Calculate excess business loss limitation — $305K single / $610K joint cap (2026). Excess converts to NOL carryforward under OBBBA permanent rules.
USSection 163(j) Business Interest Limitation Calculator
Calculate deductible business interest under the 30% ATI limit — OBBBA restored EBITDA-based calculation for 2026+.
USForm 4797 Business Property Sale Calculator — §1245 vs §1231
Calculate gain on sale of business property — separate ordinary income (Section 1245 recapture) from Section 1231 capital gain.
USSection 199A SSTB Phase-Out Calculator — QBI for Service Businesses
Calculate QBI deduction phase-out for Specified Service Trades (law, medicine, consulting) — complete loss above $490K MFJ.
USNet Operating Loss (NOL) Carryforward Calculator
Calculate multi-year NOL application with the 80% taxable income limitation — optimal strategy for using business loss carryforwards.
USHobby Loss Rules Calculator (Section 183) — Business or Hobby?
Determine if the IRS considers your activity a hobby or business — calculate tax difference and audit risk with the 9-factor test.
USWorker Classification Calculator — Employee vs Contractor (Employer)
Calculate employer cost of worker misclassification — back payroll taxes, penalties, benefits liability and SS-8 factor analysis.
USGILTI Calculator (Section 951A) — Global Intangible Low-Taxed Income
Calculate GILTI inclusion for US shareholders of CFCs — Section 962 election and Section 250 deduction analysis.
USNYC Unincorporated Business Tax (UBT) Calculator
Calculate NYC UBT 4% on self-employed and partnership income with $95K threshold and tax credit reductions.
USOil & Gas Working Interest Tax Calculator
Calculate oil & gas tax — IDC (intangible drilling cost) deduction, 15% depletion allowance, passive vs active treatment.
USGeneral Business Credit Carryforward (Form 3800)
Track 30+ business credits aggregated on Form 3800 — 1-year carryback, 20-year carryforward with 75% tax limit.
USProfits Interest (LLC) Tax Calculator — Rev Proc 93-27
Calculate profits interest grant tax — zero current income, future distributions as capital gains. Common in PE, VC, real estate sponsor promotes.
USForm 2290 Heavy Vehicle Use Tax Calculator (HVUT)
Calculate federal HVUT on trucks ≥55,000 lbs — $100-$550 base + $22 per 1,000 lbs over, multi-vehicle fleet support.
USSan Francisco Gross Receipts Tax Calculator
Calculate SF GRT (14-tier industry rates) + Homelessness GRT + Overpaid Executive Tax with apportionment.
USForm 941 Quarterly Payroll Tax Calculator
Calculate Form 941 employer quarterly federal taxes — SS, Medicare, federal income tax withholding deposits.
USForm 940 FUTA Calculator + State Credit Reduction
Calculate Form 940 federal unemployment tax — 6% on first $7K wages, 5.4% state credit, credit reduction states.
USNew Markets Tax Credit Calculator (§45D NMTC)
Calculate 39% NMTC over 7 years for CDE investments — 5%/5%/5%/6%/6%/6%/6% schedule with recapture risk.
USCarbon Credit §45Q Tax Calculator — Carbon Capture
Calculate Section 45Q carbon capture credit — $85/ton CCUS, $180/ton DAC, 12-year credit, OBBBA transferability.
USForm 1099-MISC vs 1099-NEC Calculator — Which Form to File?
Decision tree calculator — payer enters payment type/amount/relationship; outputs which 1099 form, box, due dates and penalties.
USTexas Margin Tax Calculator — 4 Method Comparison
Compare all 4 TX franchise/margin tax methods — total revenue minus COGS, comp, 30%, or EZ method.
USGILTI High-Tax Exception (HTE) Election Calculator
Calculate GILTI HTE election under Reg §1.951A-2(c)(7) — exclude tested income taxed >18.9% in foreign country.
USForm 5472 Calculator (25%+ Foreign-Owned US Corp)
Calculate Form 5472 reporting for 25%+ foreign-owned US corps — reportable transactions, $25K base + $25K continuation penalty.
USForm 8804/8805 Foreign Partner Withholding Calculator (§1446)
Calculate §1446 withholding on partnership ECI allocable to foreign partners — 37% individuals/21% corps.
USForm 5500 Employee Benefit Plan Calculator
Determine Form 5500 filing requirement (5500/5500-SF/5500-EZ) — participant count, plan type, $250 daily DOL penalty.
US§45L Energy Efficient New Home Builder Credit Calculator
Calculate §45L credit for builders — $5,000/unit for ZERH certified, $2,500 for ENERGY STAR, manufactured home rates.
US§179D Commercial Energy Efficient Building Deduction
Calculate §179D deduction up to $5/sqft (2026) for energy-efficient commercial building improvements — HVAC, lighting, envelope.
USBranch Profits Tax Calculator (§884)
Calculate 30% Branch Profits Tax on foreign corp US branch earnings — dividend equivalent amount, treaty rate reductions.
USNOL Carryback Calculator (Farm/Casualty/Disaster)
Calculate NOL carryback for farms (2-year), federally declared disasters and casualty losses — Form 1045 vs 1040-X refund.
USBIG Tax Built-In Gains Calculator (§1374 S-Corp Conversion)
Calculate Built-In Gains Tax on S-Corp converted from C-Corp — 5-year recognition period, 21% rate on appreciated assets.
USPersonal Holding Company Tax Calculator (§542)
Calculate PHC excise tax — 20% on undistributed PHC income, 60% passive income test, 5-or-fewer ownership test.
USFDII §250 Deduction Calculator (Foreign-Derived Intangible Income)
Calculate Section 250 FDII deduction — 37.5% deduction on foreign-derived intangible income (effective rate ~13.125%).
USBEAT (§59A) Base Erosion Tax Calculator
Calculate Base Erosion and Anti-Abuse Tax — 10% (post-2025) on modified taxable income, applies to large multinationals >$500M.
US§4960 Nonprofit Executive Compensation Excise Tax
Calculate 21% excise tax on nonprofit excess compensation — covered employees over $1M, parachute payments.
US§162(m) $1M Compensation Deduction Limit Calculator
Calculate §162(m) deduction limitation on covered employees — public companies cannot deduct comp >$1M for top 5 execs.
US§280G Golden Parachute Excise Tax Calculator
Calculate 20% excise on excess parachute payments — change-in-control 3x base amount safe harbor, gross-up payments.
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