Corporate Tax Calculator

Estimate your corporate tax liability based on revenue, deductible expenses, and corporate tax rates.

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Taxable Income
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Estimated Tax Owed
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Net Retained Earnings
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Formula / Calculation
Corporate Tax = (Revenue - Expenses) × Corporate Rate

Navigating Corporate Taxation

Corporate tax is levied by federal and state governments on a corporation's profits. Since the Tax Cuts and Jobs Act of 2017, the flat federal corporate tax rate in the US is 21%. However, corporations must also consider state taxes, depreciation rules, and specific corporate deductions that significantly alter the final taxable amount. C-Corporations pay entity-level tax, while S-Corporations are pass-through entities.

Key Elements of Corporate Tax

Taxable Income

Calculated as gross receipts minus cost of goods sold (COGS) and allowable operational expenses (salaries, rent, marketing, depreciation).

Double Taxation

C-Corporations face double taxation — the business pays taxes on profits, and shareholders pay taxes on dividends distributed from those profits.

NOL Carryforwards

Net Operating Losses (NOLs) can often be carried forward to offset future taxable income, providing significant tax relief for growing or recovering businesses.

Corporate Tax Minimization Strategies

Accelerate equipment depreciation where applicable under Section 179.
Maximize contributions to employee benefits and retirement plans as deductible expenses.
Structure the business optimally (e.g., S-Corp vs LLC vs C-Corp) based on revenue and investor needs.
Utilize R&D tax credits if your business develops new products, software, or processes.
Consult a corporate tax specialist for international transfer pricing and nexus rules.

Frequently Asked Questions

What is the current US federal corporate tax rate?
The flat federal corporate tax rate for C-Corporations in the US is currently 21%.
Do LLCs pay corporate tax?
Typically no. LLCs are generally pass-through entities, meaning profits pass through to the owners' personal tax returns. However, an LLC can elect to be taxed as a C-Corp.
What are deductible business expenses?
Deductible expenses must be "ordinary and necessary" for the business, including rent, payroll, marketing, business travel, supplies, and insurance.
How does Section 179 work?
Section 179 allows businesses to deduct the full purchase price of qualifying equipment and/or software purchased or financed during the tax year, rather than capitalizing and depreciating the asset over time.