Calculate Your US Business Taxes in Seconds
Stop guessing your tax bill. Get an instant, accurate estimate of your federal, state, and self-employment taxes.
- Accurate 2026 progressive tax brackets
- Automatic self-employment tax calculation
- Quarterly payment scheduling breakdown
- Instant S-Corp vs LLC savings comparison
$0.00
Tax Breakdown
S-Corp Savings
$0
Potential savings if structured as an S-Corp.
Deduction Power
$0
Savings per $5k in additional written-off expenses.
Step-by-Step Tax Guides
1How to Calculate US Business Tax
- • Total your gross revenue
- • Subtract deductible expenses
- • Calculate 15.3% SE tax on net
- • Apply progressive federal brackets
- • Add state income tax
2How Quarterly Payments Work
- • Estimate total year liability
- • Divide by four
- • Pay by Apr 15 (Q1)
- • Pay by Jun 15 (Q2)
- • Pay by Sep 15 (Q3)
- • Pay by Jan 15 (Q4)
3How to Legally Reduce Taxes
- • Form an LLC and elect S-Corp status
- • Maximize home office deductions
- • Fund a Solo 401(k) pre-tax
- • Track all business mileage
- • Pre-pay expenses in December
4How Freelancers File Taxes
- • Receive 1099-NEC forms
- • Fill out Schedule C for profit/loss
- • Fill out Schedule SE for SE tax
- • Transfer to Form 1040
- • File state returns
Tax Strategy Comparisons
LLC vs S-Corp Taxation
LLCs pay 15.3% SE tax on ALL profit. S-Corps split profit into W2 Salary (subject to SE tax) and Distributions (exempt from SE tax).
Sole Proprietorship vs LLC
Tax-wise, they are identical by default. Both file Schedule C. The LLC just provides legal asset protection.
Quarterly vs Yearly Payments
Waiting until April 15th to pay yearly taxes results in IRS underpayment penalties. Paying quarterly (4x/year) avoids this.
Federal vs State Income Tax
Federal tax is unavoidable and progressive (10-37%). State tax ranges from 0% (TX, FL, WY) up to 13%+ (CA).
Who is this Estimator For?
See how different professionals use our tool to avoid tax penalties.
Estimating quarterly payments after leaving a W2 job to avoid end-of-year shock.
Calculating net cash flow after COGS, FBA fees, and federal pass-through taxes.
Deciding if the administrative cost of an S-Corp is worth the SE tax savings.
Adding gig economy income to an existing W2 salary to find the true marginal tax hit.
Multi-member partnership predicting K-1 tax burdens for each founding partner.
Estimating tax liability before factoring in property depreciation and write-offs.
Frequently Asked Tax Questions
Further Financial Optimization
Explore other tools in the Business Lifecycle OS to streamline your operations and stay compliant.