Business Tax Planning & Estimators for 2026
Plan your 2026 business taxes. Estimate self-employment tax, corporate tax, and quarterly estimated payments accurately to avoid IRS penalties.
Don't get caught off guard at tax time. Forecast your federal and state tax liabilities instantly and keep more of what you earn.
Launch Business Tax EstimatorReal-World Use Cases
Estimating 15.3% self-employment tax on $80k net income to ensure they set aside exactly enough cash every quarter.
Estimate TaxesModeling the tax savings of switching from an LLC to an S-Corp election after hitting $150k in net profit.
Find an S-Corp CPAUnderstanding state tax residency and federal tax obligations while operating a US LLC from abroad.
Read Tax GuidesTracking pre-launch expenses to maximize the $5,000 first-year IRS startup cost deduction.
Calculate DeductionsManaging state sales tax nexus and ensuring proper remission to state authorities.
Check State ComplianceStep-by-Step Implementation
Preparing for Quarterly Taxes
- Calculate your estimated net profit for the quarter.
- Use our Tax Estimator to determine total federal and state liability.
- Divide your annual estimate by 4 to find your quarterly payment.
- Pay the IRS via the EFTPS online portal before the deadline.
Maximizing the Home Office Deduction
- Measure the exact square footage of your dedicated workspace.
- Divide by the total square footage of your home to get your deduction percentage.
- Apply this percentage to rent, mortgage interest, utilities, and internet bills.
- Alternatively, use the IRS simplified method ($5 per square foot up to 300 sq ft).
S-Corp Election Checklist
- Ensure you are currently an eligible domestic LLC.
- Determine a 'reasonable' W-2 salary for your role.
- Set up a formal payroll processor (like Gusto or Gusto).
- File Form 2553 with the IRS within 2 months and 15 days of the tax year start.