Free online calculators and generators for self-employed business owners. Updated for OBBBA 2026.
Calculator
SE Tax Calculator
Self-employment tax (Social Security + Medicare), income tax estimate, QBI, and quarterly safe-harbor amounts for 2026.
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Entity Comparison
LLC vs. S-Corp vs. C-Corp projection across 5 years at your profit level. Includes QBI, payroll cost, and compliance cost.
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S-Corp Election Generator
Form 2553 cover letter, board resolution, and state filing checklist — built from your entity inputs in under 2 minutes.
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QBI Deduction
Section 199A at the permanent OBBBA 23% rate. Handles SSTB vs non-SSTB logic, W-2 wage phase-out, and OBBBA $400 minimum.
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Estimated Tax Generator
Quarterly tax worksheet from YTD income with safe-harbor 100%/110% logic, four due dates, and penalty avoidance for 2026.
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Free 2026 Federal Estimated Tax Deadline Calculator
Get all four 2026 federal estimated-tax due dates for individual, self-employed, and S-Corp owner filing contexts, including Q4 due January 15, 2027.
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1099 Freelancer Tax
SE tax, federal income tax, QBI, quarterly schedule, and S-Corp upgrade CTA for freelancers — 2026 OBBBA-compliant.
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Home Office Generator
Simplified vs. actual method comparison, pre-filled Form 8829 worksheet, and audit documentation checklist.
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S-Corp Salary Distribution
Exact FICA savings from your salary/distribution split, with break-even verdict at $60K–$250K profit and audit-flag logic.
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Reasonable Salary Calculator
IRS-defensible S-Corp owner salary range by industry, with audit-risk flag based on percentages of profit and distribution.
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State Tax Stack
Compare 50 states + 100 metros on income, payroll, property, sales, and capital-gains tax. AI chat for natural-language queries.
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Tax Penalty Calculator
IRS Form 2210 underpayment penalty — safe harbor, per-quarter underpayment, and ~8%/yr penalty estimate for 2026.
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Tax Optimization Report
Premium entity comparison with 10-year projection, QBID, NIIT, and a Tax Optimization Playbook ($39 — see full analysis).
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Expense Policy Generator
IRS-compliant reimbursement policy for travel, meals (50%), vehicle/mileage (70¢), home office, and accountable-plan structure.
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